From nobody Sat Oct 10 12:32:48 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 95F083A16A9; Sat, 10 Oct 2020 12:32:46 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.087 X-Spam-Level: X-Spam-Status: No, score=-2.087 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_REMOTE_IMAGE=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3J2Equ1DT48J; Sat, 10 Oct 2020 12:32:44 -0700 (PDT) Received: from mail-ua1-x930.google.com (mail-ua1-x930.google.com [IPv6:2607:f8b0:4864:20::930]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B04DB3A16A8; Sat, 10 Oct 2020 12:32:44 -0700 (PDT) Received: by mail-ua1-x930.google.com with SMTP id j15so4190590uaa.8; Sat, 10 Oct 2020 12:32:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=C4XmRFX1FdrrRzHy07a2GSoJiSgJ3YIKxx06VY1GuZo=; b=l/wT/6n79CIUOTv4pqm/K8lEE1kblzGre8C3S9aI7zSBJSmtJtUkXa/Oc2X7cZrOxx tPG2GJZoI2BMACc1gCsxIdz4YToMqMoSiCzoBOXZPBAtIM/mvFoZSlI6hqOFLS5jg1Z2 Tn1IB8Ni9ZZ9w4UcCTLTxD+js/PiGn9/vJIqaS3P8k0mW8zTeMHon59vKRFGdL99a7Mz z49KwWP4jw1O8WfZ744LzDfDiYMziEm5Z6jBczBBrcgqxSc0THiTQ9+j/JPgn4iJOa9b ZUXIpTTk9q9nULW4NCnLFgXSn9305pRe9vlJ2k5Lja7dEYCZvR5r9gYqUvFa83eGG7x4 ImPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=C4XmRFX1FdrrRzHy07a2GSoJiSgJ3YIKxx06VY1GuZo=; b=VQermoRALA2KkWdwNg3v0Wd8mG3BGjMcsKBz8tBv5rs6bHe3vgmdL/W3s0C/rLYBmH NLTaIbEVzS5S3fxhM9+oZ+6it9RBwSlp3ItoXDo/zgMKEXei9Bmmix/KmV74EAp84tjw ceCQYp3IkfPZjvLG/56tpdNaZDoYJaaqoeDCpxpZTvX9AgkZh2PHoIusavRIHB6sPX5T BDWzcq/GlQQm2W/gHoEggJI9xsRYtzPrATsTSE5H3j/oZCyMKSs3wDgB7qxBs1nZEpDM WabvICI5TRX8tnwaj8K1VnxnFRlFTnGCp9wvtnzDinwCg3sL9jCiATAFGsrCG/1EOYwM 6olQ== X-Gm-Message-State: AOAM530ZTFK9LllVcyFQIYSmvsFSzqlT1QKc/OsV+gDiO5RTaLggDjuN W1jk7PR6/EwQ1fUgdIum7KMQm1nSHVMl+ZV5R+xteQMvxX6Q/Q== X-Google-Smtp-Source: ABdhPJyZ1k487MCskVdLlZNFlktDkewQsyuThKUxkuffWPOYTUDMTHhIxwhcpLmJa3JAeOY/f4u9n3FFMi/gmCi+dCc= X-Received: by 2002:a9f:25c3:: with SMTP id 61mr10691059uaf.111.1602358363286; Sat, 10 Oct 2020 12:32:43 -0700 (PDT) MIME-Version: 1.0 From: Gyan Mishra Date: Sat, 10 Oct 2020 15:26:56 -0400 Message-ID: To: TEAS WG , pce@ietf.org, IDR List , lsr , BESS , BIER WG , SPRING WG Content-Type: multipart/alternative; boundary="0000000000000bf09f05b15621d5" Archived-At: Subject: [Bier] PCE Controller & SDN Controller & Netconf/Yang NMS Controller - lines blurred and can the names be used ubiquitously meaning the same X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Oct 2020 19:32:47 -0000 --0000000000000bf09f05b15621d5 Content-Type: text/plain; charset="UTF-8" Dear TEAS, PCE, IDR, LSR, BESS, BIER Spring Working Groups, I have noticed that after reviewing many drafts across many WGs it seems in the industry that the lines seem to be blurred between a PCE controller, ODL or Openflow SDN Controller and a Netconf/Yang NMS Controller ZTP & Day X provisioning. As this is a software sitting on a server you can have a swiss army knife server that does everything from PCE path computation to Netconf/Yang ZTP & Day N provisioning as well as any SDN Controller ODL or Openflow controller type functions as well. How this comes into play and realization of the lines being blurred is the use of BGP-LS in building the IGP topological graph of the network which was designed for PCEP and PCE & PCC active & passive off line path computation for both RSVP-TE or SR-TE path instantiation. However now BGP-LS can also be used for other functions now such as usage as I am a Shepherd reviewing a draft for BGP-LS usage for BIER to use BGP-LS to gather the elements internals within BIER using the same BGP-LS data structures to populate with BIER specific information to graph the BIER topology. So here we are not doing any path computations as we are using in this use case for NMS type function to gather data for ZTP & Day N provisioning. Similarly other use cases such as with TEAS TS-Transport slice and being able to provision TS and capturing the TS Enhanced VPN RT & resource information and leveraging BGP-LS to do the same data gathering & ZTP like controller style provisioning. It does seem as though BGP-LS as its a means of "data gathering" "dump truck" of anything with the kitchen sink included to build any type of topological graph of literally anything under the sun. I see that is a nice to leverage but it does in fact blur the lines of NMS Netconf/Yang Controller based functionality and PCE path computation functionality and SDN controller based ZTP functionality into a single ubiquitous server that can do all of the above and use BGP-LS to accomplish the "kitchen sink" tasks. It does however transform BGP to be an NMS tool but a "tool" and not just the original function which it was intended NLRI network reachability. Am I off base and please let me know as its BGP-LS is being way over leveraged. There are pros & cons to everything but I thought I would bring up to the WG as an important discussion point. Lots of food for thought. Welcome all comments as well as concerns related to this topic. Kind Regards, *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD --0000000000000bf09f05b15621d5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Dear TEAS, PCE, IDR, LSR, BESS, BIER=C2=A0 = Spring Working Groups,

I have noticed that after reviewi= ng many drafts across many WGs it seems in the industry that the lines seem= to be blurred between a PCE controller, ODL or Openflow SDN Controller and= a Netconf/Yang NMS Controller ZTP & Day X provisioning.

=
As this is a software sitting on a server you can have a swiss a= rmy knife server that does everything from PCE path computation to=C2=A0 Ne= tconf/Yang ZTP & Day N provisioning as well as any SDN Controller ODL o= r Openflow controller type functions as well.

How = this comes into play and realization of the lines being blurred is the use = of BGP-LS in building the IGP topological graph of the network which was de= signed for PCEP and PCE & PCC active & passive off line path comput= ation for both RSVP-TE or SR-TE path instantiation.=C2=A0=C2=A0
<= br>
However now BGP-LS can also be used for other functions now s= uch as usage as I am a Shepherd reviewing a draft for BGP-LS usage for BIER= to use BGP-LS to gather the elements internals within BIER using the same = BGP-LS data structures to populate with BIER specific information to graph = the BIER topology.=C2=A0 So here we are not doing any path computations as = we are using in this use case=C2=A0 for NMS type function to gather data fo= r ZTP & Day N provisioning.

Similarly other us= e cases such as with TEAS TS-Transport slice and being able to provision TS= and capturing the TS Enhanced VPN RT & resource information and levera= ging BGP-LS to do the same data gathering & ZTP like controller style p= rovisioning.=C2=A0

It does seem as though BGP-LS a= s its a means of "data gathering" "dump truck" of anyth= ing with the kitchen sink included to build any type of topological graph o= f literally anything under the sun.=C2=A0 I see that is a nice to leverage = but it does in fact blur the lines of NMS Netconf/Yang Controller based fun= ctionality and=C2=A0 PCE path computation functionality and SDN controller = based ZTP functionality into a single ubiquitous server that can do all of = the above and use BGP-LS to accomplish the "kitchen sink" tasks.= =C2=A0 It does however transform BGP to be an NMS tool but a "tool&quo= t; and not just the original function which it was intended NLRI network re= achability.

Am I off base and please let me k= now as its BGP-LS is being way over leveraged.=C2=A0 There are pros & c= ons to everything but I thought I would bring up to the WG as an important = discussion point.

Lots of food for thought.=C2=A0 = Welcome all comments as well as concerns related to this topic.
<= br>
Kind Regards,

Gyan Mishra

=

Network Solutions A<= /i>rchitect=C2=A0=

M 301 502-1347
13101 Columbia Pi= ke=C2=A0
Silver Spring, MD


--0000000000000bf09f05b15621d5-- From nobody Mon Oct 12 21:39:41 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BDD313A0DFE; Mon, 12 Oct 2020 21:39:39 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.087 X-Spam-Level: X-Spam-Status: No, score=-2.087 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_REMOTE_IMAGE=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id yroNN4thhABL; Mon, 12 Oct 2020 21:39:37 -0700 (PDT) Received: from mail-ua1-x930.google.com (mail-ua1-x930.google.com [IPv6:2607:f8b0:4864:20::930]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 315103A09F7; Mon, 12 Oct 2020 21:39:34 -0700 (PDT) Received: by mail-ua1-x930.google.com with SMTP id f15so6086215uaq.9; Mon, 12 Oct 2020 21:39:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=IDVmzwul4ofqd5waloRN0uQpcMgvLZ9ZAv4gENR6/vk=; b=F0Rbf0927PXPCY8P+LUqSssUIphXiGlgH7Mpj5zcMadlgjnOSFWzeixVoRkjqFV0rh ySP0nnJcEyrsXoBFPrHe9AgwSDnT44IkK/aiM+MTOgXYPqAxxgF+XEM8D9dXfew1IvGk mzhT9j6YGewOMKt9JzOEFs+H1+1iEDoAxVUt7H5zUQME3rsp8l3y/FoiSc9wOqJnclEK 7z3yy/oYtTu7hHPyvLMNpyaoo3T8XEQQToAw2V+KSL4jmiT8E73cgSHP3eiw0SkogC5N 9m+NG7J2xUM9fQj1ld3U4bjtZDh+xjpGO1XXlrrGR5uhJHk5OvctparlVzcS9ea7ulwm fOcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=IDVmzwul4ofqd5waloRN0uQpcMgvLZ9ZAv4gENR6/vk=; b=Ukcg6f+KxcXsQkge3Y6XW112RCeu7sdSrFWc3KeQPZ2GbdDAfERIBwGs9i2IgRU+hu mEQGkIHQZ50lLb02K+4vIfCJmHadQm4JvqrchE5OPDIerzeUNjVUFsNOWHYdOXnf1uWq 20Stl0cnVcHWI0OmlNTlyjuAq80y/O7wjOQcv5zHtcB/6Y2xdAeH9SVHfPSHs+bPiuXv ORgEF3yjYITttAjNA0Bb/MOJuAXtzsUOR7Ax1//W6WN/IMoj2tr2r1C+epBHeiEX6KBl +DkKJgDcN737P6KzaUtRaKG3Cu8WbNi0GCZqgUMA4tMAE9/KV+K7BCam9Gs4kN14Igdu iOWA== X-Gm-Message-State: AOAM532khP51HYqyDDXnl6TqMz2U5MLQtL/+DpDGNyLIyDzMfiXzEDwh Fiw19kbfMonAIXW21gwYxn34CM7awAUuS6CfmXibuTGzWVT6Mzwc X-Google-Smtp-Source: ABdhPJwivjK3H4T4XTF7JrFFfYTkZE+PXcHfazL1EzpNUJ1VDSmY2OT+6w6pEa/fwhHH19RCTN3IoRrMn4WnlpA3iZg= X-Received: by 2002:ab0:4d62:: with SMTP id k34mr2800567uag.141.1602563972692; Mon, 12 Oct 2020 21:39:32 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Gyan Mishra Date: Tue, 13 Oct 2020 00:33:50 -0400 Message-ID: To: TEAS WG , pce@ietf.org, IDR List , lsr , BESS , BIER WG , SPRING WG Content-Type: multipart/alternative; boundary="00000000000052820105b18600e0" Archived-At: Subject: Re: [Bier] PCE Controller & SDN Controller & Netconf/Yang NMS Controller - lines blurred and can the names be used ubiquitously meaning the same X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 13 Oct 2020 04:39:40 -0000 --00000000000052820105b18600e0 Content-Type: text/plain; charset="UTF-8" All Another way of looking at BGP-LS is that it is an extremely powerful tool for centralized controller based architectures or hybrid architectures, and it does not bog down or impact the agility and lightweight aspects of BGP, as BGP has its overall ability to stack & pile on SAFI's and codepoint's as necessary to meet the desired design objectives. So BGP can still remain as light weight or as heavy weight as desired based on the design objective. ! BGP LS IAIA codepoints https://www.iana.org/assignments/bgp-ls-parameters/bgp-ls-parameters.xhtml So its safe to say that the use cases are pretty limitless for BGP-LS from PCE path instantiation to ZTP & Day X provisioning & configuration. I think "dump drunk" depiction of BGP-LS is really a negative perception, as BGP-LS has the native data structures primitives to build customizable TLV's to meet almost any design objective. Comments welcome. Kind Regards Gyan On Sat, Oct 10, 2020 at 3:26 PM Gyan Mishra wrote: > > Dear TEAS, PCE, IDR, LSR, BESS, BIER Spring Working Groups, > > I have noticed that after reviewing many drafts across many WGs it seems > in the industry that the lines seem to be blurred between a PCE controller, > ODL or Openflow SDN Controller and a Netconf/Yang NMS Controller ZTP & Day > X provisioning. > > As this is a software sitting on a server you can have a swiss army knife > server that does everything from PCE path computation to Netconf/Yang ZTP > & Day N provisioning as well as any SDN Controller ODL or Openflow > controller type functions as well. > > How this comes into play and realization of the lines being blurred is the > use of BGP-LS in building the IGP topological graph of the network which > was designed for PCEP and PCE & PCC active & passive off line path > computation for both RSVP-TE or SR-TE path instantiation. > > However now BGP-LS can also be used for other functions now such as usage > as I am a Shepherd reviewing a draft for BGP-LS usage for BIER to use > BGP-LS to gather the elements internals within BIER using the same BGP-LS > data structures to populate with BIER specific information to graph the > BIER topology. So here we are not doing any path computations as we are > using in this use case for NMS type function to gather data for ZTP & Day > N provisioning. > > Similarly other use cases such as with TEAS TS-Transport slice and being > able to provision TS and capturing the TS Enhanced VPN RT & resource > information and leveraging BGP-LS to do the same data gathering & ZTP like > controller style provisioning. > > It does seem as though BGP-LS as its a means of "data gathering" "dump > truck" of anything with the kitchen sink included to build any type of > topological graph of literally anything under the sun. I see that is a > nice to leverage but it does in fact blur the lines of NMS Netconf/Yang > Controller based functionality and PCE path computation functionality and > SDN controller based ZTP functionality into a single ubiquitous server that > can do all of the above and use BGP-LS to accomplish the "kitchen sink" > tasks. It does however transform BGP to be an NMS tool but a "tool" and > not just the original function which it was intended NLRI network > reachability. > > Am I off base and please let me know as its BGP-LS is being way over > leveraged. There are pros & cons to everything but I thought I would bring > up to the WG as an important discussion point. > > Lots of food for thought. Welcome all comments as well as concerns > related to this topic. > > Kind Regards, > > > > *Gyan Mishra* > > *Network Solutions A**rchitect * > > > > *M 301 502-134713101 Columbia Pike *Silver Spring, MD > > -- *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD --00000000000052820105b18600e0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
All

Another way of loo= king at BGP-LS is that it is an extremely powerful tool for centralized con= troller based architectures or hybrid architectures, and it does not bog do= wn or impact the agility and lightweight aspects of BGP, as BGP has its ove= rall ability to stack & pile on SAFI's and codepoint's as neces= sary to meet the desired design objectives.=C2=A0 So BGP can still remain a= s light weight or as heavy=C2=A0weight as desired based on the design objec= tive.

! BGP LS IAIA codepoints

So its safe to say that the use= cases are pretty limitless for BGP-LS from PCE path instantiation to ZTP &= amp; Day X provisioning & configuration.=C2=A0 I think "dump drunk= " depiction of BGP-LS is really a negative perception, as BGP-LS has t= he native data structures primitives to build customizable TLV's to mee= t almost any design objective.=C2=A0

Comments welc= ome.

Kind Regards

Gyan



On Sat, Oct 10, 2020 at 3:26 PM Gyan Mishra <= hayabusagsm@gmail.com> wrot= e:

Dear TEAS, PCE, IDR, LSR, BESS, BIER=C2=A0 Spring Workin= g Groups,

I have noticed that after reviewing many draft= s across many WGs it seems in the industry that the lines seem to be blurre= d between a PCE controller, ODL or Openflow SDN Controller and a Netconf/Ya= ng NMS Controller ZTP & Day X provisioning.

As= this is a software sitting on a server you can have a swiss army knife ser= ver that does everything from PCE path computation to=C2=A0 Netconf/Yang ZT= P & Day N provisioning as well as any SDN Controller ODL or Openflow co= ntroller type functions as well.

How this comes in= to play and realization of the lines being blurred is the use of BGP-LS in = building the IGP topological graph of the network which was designed for PC= EP and PCE & PCC active & passive off line path computation for bot= h RSVP-TE or SR-TE path instantiation.=C2=A0=C2=A0

However now BGP-LS can also be used for other functions now such as usage = as I am a Shepherd reviewing a draft for BGP-LS usage for BIER to use BGP-L= S to gather the elements internals within BIER using the same BGP-LS data s= tructures to populate with BIER specific information to graph the BIER topo= logy.=C2=A0 So here we are not doing any path computations as we are using = in this use case=C2=A0 for NMS type function to gather data for ZTP & D= ay N provisioning.

Similarly other use cases such = as with TEAS TS-Transport slice and being able to provision TS and capturin= g the TS Enhanced VPN RT & resource information and leveraging BGP-LS t= o do the same data gathering & ZTP like controller style provisioning.= =C2=A0

It does seem as though BGP-LS as its a mean= s of "data gathering" "dump truck" of anything with the= kitchen sink included to build any type of topological graph of literally = anything under the sun.=C2=A0 I see that is a nice to leverage but it does = in fact blur the lines of NMS Netconf/Yang Controller based functionality a= nd=C2=A0 PCE path computation functionality and SDN controller based ZTP fu= nctionality into a single ubiquitous server that can do all of the above an= d use BGP-LS to accomplish the "kitchen sink" tasks.=C2=A0 It doe= s however transform BGP to be an NMS tool but a "tool" and not ju= st the original function which it was intended NLRI network reachability.

Am I off base and please let me know as its BG= P-LS is being way over leveraged.=C2=A0 There are pros & cons to everyt= hing but I thought I would bring up to the WG as an important discussion po= int.

Lots of food for thought.=C2=A0 Welcome all c= omments as well as concerns related to this topic.

Kind= Regards,


--
--00000000000052820105b18600e0-- From nobody Wed Oct 14 22:44:36 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 86DDB3A12BE; Wed, 14 Oct 2020 22:44:34 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.087 X-Spam-Level: X-Spam-Status: No, score=-2.087 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_REMOTE_IMAGE=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id i3iR8QkEgInO; Wed, 14 Oct 2020 22:44:32 -0700 (PDT) Received: from mail-vs1-xe35.google.com (mail-vs1-xe35.google.com [IPv6:2607:f8b0:4864:20::e35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B18DD3A12BA; Wed, 14 Oct 2020 22:44:32 -0700 (PDT) Received: by mail-vs1-xe35.google.com with SMTP id p25so794840vsq.4; Wed, 14 Oct 2020 22:44:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=zG0GHbCTGCJtm6twB+0dLyGMWq1ySs+smYgJ5vAGGi8=; b=aSR4OqWBSbZ7he9Dr5sc+S36hXEq/GbmyIR1oSMzKpjBQBEv38D08frrcfKz1nEqxA 8ggeByYyJqcSFPopxfCy/Jbr7TH3gPJTSzmf1cVM+s5xU8huCR9Woic4EytHZKyrGbDl sEIVmbF0ViSEveqHaKTPofnkPEDzT0bMOY2+aq4Bp7e/3t8nxBo3GgHTu+SzxaCLpuYd LNKgAeVXiI2sH5iPbaCP386hV6M7X0nM+VGzXmeKZH3LUUVNNWOWPmlMOPB2cFOtbrHB ONIPUa4Dlb3xjgVRSz9LrTNzRBf/XoPGUt4UPGbTvXlDK4WVO+XOBw6YvMvLhNq80BTd SPNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=zG0GHbCTGCJtm6twB+0dLyGMWq1ySs+smYgJ5vAGGi8=; b=j6pFGxB8QL5xM3xcPYa1mEo1OwidObKAuF8N9PY6OC5I4OaIRV/LwnaHs9KZJj04zY EmdPFy26pIWu0tK/fyL2YVnckDIsm5iTVCxutFdqU7oCj/4Z/nix/eoiS0CRa2xGhdBo n0Kz/yMwOqSVqa+9dPVHP6y7/BQTtvW/tKWozKO+0xcJalPq9g8cNAdm1VoTpmUH9PEX 3KjDeUn5QeL3vrwvaF0inbcNRbxXRi9rZ801t8qsgxNjk4oO8JxjlZUFD0LUUvSVbszu LWOmL1furwih0GfYT7vOa6Q0wuS2HXP5AqGcv4tNCVrdzKKWo9zPirk6vJoB5VdwTb19 M8mQ== X-Gm-Message-State: AOAM533bPSGRzRSVPmS9gRSwc5J/TYQLrhPvyZFvvpOyLThfJCA2U6Ik v/SMpTLZ9pFOE2TjQVIoiT2Oudpui0D86PuEgS/j3ZuOQq+fpsUu X-Google-Smtp-Source: ABdhPJwodTB0IF+Fp8se51xZo/iPVvgGVkDXHHLoH75MGazjsBqlKQvkpRg0fIaegYqO5jm7txowh0WEx7nT5LSXvPg= X-Received: by 2002:a67:fdc9:: with SMTP id l9mr1433203vsq.60.1602740671355; Wed, 14 Oct 2020 22:44:31 -0700 (PDT) MIME-Version: 1.0 References: <160135897929.11422.10264130821134725490@ietfa.amsl.com> In-Reply-To: <160135897929.11422.10264130821134725490@ietfa.amsl.com> From: Gyan Mishra Date: Thu, 15 Oct 2020 01:38:52 -0400 Message-ID: To: BIER WG , draft-ietf-bier-ipv6-requirements , BIER WG Chairs Content-Type: multipart/alternative; boundary="000000000000621d3605b1af2494" Archived-At: Subject: [Bier] Fwd: I-D Action: draft-ietf-bier-ipv6-requirements-09.txt X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Oct 2020 05:44:35 -0000 --000000000000621d3605b1af2494 Content-Type: text/plain; charset="UTF-8" Dear WG, Chairs & AD, I would like to thank the AD & Chairs for their recommendations to remove the solutions section 3 so the draft can remain razor focused solely on the "requirements" and not the solutions so we can move the ball forward. The draft has been thoroughly scrubbed to provide clarity and address all comments provided on the ML. Please review revision 9 and provide comments and feedback supporting the draft. Kind Regards Gyan ---------- Forwarded message --------- From: Date: Tue, Sep 29, 2020 at 1:57 AM Subject: [Bier] I-D Action: draft-ietf-bier-ipv6-requirements-09.txt To: Cc: A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Bit Indexed Explicit Replication WG of the IETF. Title : BIER IPv6 Requirements Authors : Mike McBride Jingrong Xie Xuesong Geng Senthil Dhanaraj Rajiv Asati Yongqing Zhu Gyan Mishra Zhaohui Zhang Filename : draft-ietf-bier-ipv6-requirements-09.txt Pages : 7 Date : 2020-09-28 Abstract: There have been several proposed solutions with BIER being used in IPv6. But there hasn't been a document which describes the problem and lists the requirements. The goal of this document is to describe the general BIER IPv6 encapsulation problem and detail solution requirements, thereby assisting the working group in the development of acceptable solutions. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bier-ipv6-requirements/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bier-ipv6-requirements-09 https://datatracker.ietf.org/doc/html/draft-ietf-bier-ipv6-requirements-09 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bier-ipv6-requirements-09 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ BIER mailing list BIER@ietf.org https://www.ietf.org/mailman/listinfo/bier -- *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD --000000000000621d3605b1af2494 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
=C2=A0 Dear WG, Chairs & AD,

I= would like to thank the AD & Chairs for their recommendations to remov= e the solutions section 3 so the draft can remain razor focused solely on t= he "requirements" and not the solutions so we can move the ball f= orward.

The draft has been thoroughly scrubbed to = provide clarity and address all comments provided on the ML.

=
Please=C2=A0review revision 9 and provide comments and feedback = supporting the draft.

Kind Regards

Gyan
--------= -- Forwarded message ---------
From: <internet-drafts@ietf.org>
= Date: Tue, Sep 29, 2020 at 1:57 AM
Subject: [Bier] I-D Action: draft-iet= f-bier-ipv6-requirements-09.txt
To: <i-d-announce@ietf.org>
Cc: <bier@ietf.org>



A New Internet-Draft is available from the on-line Internet-Drafts director= ies.
This draft is a work item of the Bit Indexed Explicit Replication WG of the= IETF.

=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= BIER IPv6 Requirements
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Mike= McBride
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Jingrong Xie
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Xuesong Geng
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Senthil Dhanaraj
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Rajiv Asati
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Yongqing Zhu
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Gyan Mishra
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Zhaohui Zhang
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet= f-bier-ipv6-requirements-09.txt
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= 7
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 := 2020-09-28

Abstract:
=C2=A0 =C2=A0There have been several proposed solutions with BIER being use= d in
=C2=A0 =C2=A0IPv6.=C2=A0 But there hasn't been a document which describ= es the problem
=C2=A0 =C2=A0and lists the requirements.=C2=A0 The goal of this document is= to describe
=C2=A0 =C2=A0the general BIER IPv6 encapsulation problem and detail solutio= n
=C2=A0 =C2=A0requirements, thereby assisting the working group in the devel= opment
=C2=A0 =C2=A0of acceptable solutions.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/= draft-ietf-bier-ipv6-requirements/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ie= tf-bier-ipv6-requirements-09
https://datatracker.ietf.o= rg/doc/html/draft-ietf-bier-ipv6-requirements-09

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff= ?url2=3Ddraft-ietf-bier-ipv6-requirements-09


Please note that it may take a couple of minutes from the time of submissio= n
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


_______________________________________________
BIER mailing list
BIER@ietf.org
https://www.ietf.org/mailman/listinfo/bier


--


Gyan Mishra

= Network Solutions Architect=C2=A0

M 301 502-1347<= br>13101 Columbia Pike=C2=A0
Silver Spring, MD

=
--000000000000621d3605b1af2494-- From nobody Sun Oct 18 00:07:53 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 274D03A0CCE; Sun, 18 Oct 2020 00:07:52 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.187 X-Spam-Level: X-Spam-Status: No, score=-0.187 tagged_above=-999 required=5 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_REMOTE_IMAGE=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jVF9xOUXSBag; Sun, 18 Oct 2020 00:07:50 -0700 (PDT) Received: from mail-vs1-xe36.google.com (mail-vs1-xe36.google.com [IPv6:2607:f8b0:4864:20::e36]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3C82F3A0CCB; Sun, 18 Oct 2020 00:07:47 -0700 (PDT) Received: by mail-vs1-xe36.google.com with SMTP id w25so3904452vsk.9; Sun, 18 Oct 2020 00:07:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=2iaQ11eT2wePUDQrU90jpCuz7xPrt7nZ4USUnicpcA0=; b=Lp9AzW+nqA8hUNcNmBjizaW6+twg6XkkxyCg9THg5U0VsZbbtdABJgroRspggoeS0m vtj8dcFoZ2SMdiiXwXJcjqoWrD4Zs7hQ0YgJAm9xFUnlKrTutR0JvE1A/pyOSf+6WdYq ToVJh0lxaYKvX3pSgD8QfdO4NIHQ2CzIo/lvajNVo/lFFI2Q8rPW4nh+cGlpea+QdDe+ TGLx+Mc4wWSPkMafXUOXljekRcw+9WoCi6jbCPUbGhixHyznLDnaUJ6LQetSEQ8QvzPb EVM3WIkspLBz1yVHEuFfw53ntz8qjp5MnIuzBqPZaW2T6qvtEL3K1AHbsM580QfcdTta jNiA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=2iaQ11eT2wePUDQrU90jpCuz7xPrt7nZ4USUnicpcA0=; b=GaijF/l5hlxin5/R9bj6vkRaOXIPXiLsJCXiYBzW93OB6P+hmKbMnRL+xLFiJsISsD SneEFWgJpLmLb8Mre/gNWGnUQR5/2AsAyJDELvQOsCtqgpSf+6dnZCsa3cnr+pJz4r3d sHNwfGxTyxsLdwyIVXz/7pakw05Mn1jzjFMfC0VWkLMogyQ3qE23dMAm6oHS16aMqy8U 9WWtjYJp6qsbi0ZrVjU7Vj+M1PEdeewQ/7eQXgje31IefH88sTA9soW77mdm7o+0IFa8 4ePsbh61O9OaVwR4Y5IlFy+RdkriTSGUdn1RfLZE+jRRQNvZkGeAUriSJu5uil+Z3ZKS SMdA== X-Gm-Message-State: AOAM530EZFhnsh1m9l17uRtgxGyaL30MfX1WrMr8nILkG/j669X8AHv0 4+f+PYr7uMAqRQDRqqMv/GGiGibcsVI2uPRErsRH9f2CZfl6Gw== X-Google-Smtp-Source: ABdhPJxFJdJwqXFywzErRr2riV+n0afijtbXfg7+4wWNhN3x7cPv4RwhRkLjrM0nN5cU6tqfwFxkUKLef4kcOsOCPEA= X-Received: by 2002:a67:7dc4:: with SMTP id y187mr5798091vsc.58.1603004865727; Sun, 18 Oct 2020 00:07:45 -0700 (PDT) MIME-Version: 1.0 From: Gyan Mishra Date: Sun, 18 Oct 2020 03:07:20 -0400 Message-ID: To: BIER WG , BIER WG Chairs , "draft-ietf-bier-bgp-ls-bier-ext@ietf.org" Content-Type: multipart/alternative; boundary="00000000000098514d05b1eca7db" Archived-At: Subject: [Bier] =?utf-8?q?Shepherd=E2=80=99s_review_of_draft-ietf-bier-bg?= =?utf-8?q?p-ls-bier-ext-07?= X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Oct 2020 07:07:52 -0000 --00000000000098514d05b1eca7db Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Dear Authors, Thank you for a well-written succinct document. I have a few comments and questions on the use of BGP-LS extension and why it is necessary for BIER and what gap that exists that is being addressed by this extension. What is broken today? The abstract and introduction describes how BIER works which anyone reading the draft can read normative references RFC 8279 and RFC 8296. The last sentence says the following: This document specifies extensions the BGP Link-state address-family in order to advertise BIER information. The last sentence in the introductionstates the following: In order to satisfy the need for applications that require topological visibility across one area or Autonomou System (AS). This document specifiesextensions to the BGP Link-state address-family in order to advertise BIER-specific. An external component (e.g., a controller) then can collect BIER information in the "northbound" direction within the BIER domain. Section 3 goes on to describe how this new BGP-LS extension for BIER will be able to gather the BIER specific topology information and send Northbound to an external controller which will then build rebuild a topological graph of the BIER domain or multiple domains for multicast =E2=80=9Capplications=E2=80=9D that won=E2=80=99t work for without this ext= ension. I think in the draft it is important to note the gap that exists today without this draft and clearly what is broken that is being fixed by the draft. That should be spelled out clearly in the Introduction as well as stated briefly in the abstract. Inter-AS BIER trees can be built without a controller and this BGP-LS extension, similar to today inter-as MVPN mLDP PE P2MP TE stateful segmented or end to end LSP trees. I think we need to expand more on the application visibility and what applications I am guessing ASM, SSM trees over BIER inter-as, but I still don=E2=80=99t understand the gap as what won=E2=80=99t work with multicast = applications today without this BGP-LS extension for BIER. Please help me understand. Also could BIER BGP-LS extension also be used for BIER inter-as provisioning of stateless tree? So possibly be used for instantiation of all inter-as stateless trees based on the topological graph. As the BIER trees are stateless in a way you could pre build all X-PMSI trees set the BFR bitmask for all egress PEs ahead of time provision inter-as from BFIR ingress domain to BFER egress domain. There maybe other use cases or reasons for BGP-LS usage by BIER but I think provisioning could be one of them. Once I have received feedback on the comments I will compile the Feedback and complete the Shepherds write-up. Kind Regards Gyan --=20 *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD --00000000000098514d05b1eca7db Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


<= span style=3D"font-family:UICTFontTextStyleBody;font-size:17px;background-c= olor:rgb(255,255,255)">Dear Authors,

Thank you for= a well-written succinct document.=C2=A0

I have a few = =C2=A0comments and questions on the use of BGP-LS extension and why it is n= ecessary for BIER and what gap that exists that is being addressed by this = extension.=C2=A0

What is broken today?

The abstract and introduction describes how BIER works which anyone rea= ding the draft can read normative references RFC 8279 and RFC 8296.
=
The last sentence says the following:
This document specifies extensions the BGP Link-state address-family in=
 order to advertise BIER information.

= 
The last sentence in the introductionstates the follo=
wing:

In order to satisfy the nee=
d for applications that require topological visibility across one area or A=
utonomou
Sys=
tem (AS).  This document specifiesextensions to the BGP Link-state address-=
family in order to advertise BIER-specific.  An external component
(e.g., a controller) then can collect BIER information in the "northbo=
und"=C2=A0
direction within the BIER domain.

Sectio= n 3 goes on to describe how this new BGP-LS extension for BIER will be able= to gather the BIER specific topology information and send Northbound to an= external controller which will then build rebuild a topological graph of t= he BIER domain or multiple domains for multicast =E2=80=9Capplications=E2= =80=9D that won=E2=80=99t work for without this extension.

I think in the draft it is important to note the gap that exists today = without this draft and clearly what is broken that is being fixed by the dr= aft.

That should be spelled out clearly in the Introduct= ion as well as stated briefly in the abstract. =C2=A0

In= ter-AS BIER trees can be built without a controller and this BGP-LS extensi= on, similar to today inter-as MVPN mLDP PE P2MP TE stateful segmented or en= d to end LSP trees.

I think we need to expand more on th= e application visibility and what applications I am guessing ASM, SSM trees= over BIER inter-as, but I still don=E2=80=99t understand the gap as what w= on=E2=80=99t work with multicast applications today without this BGP-LS ext= ension for BIER.

Please help me understand.

<= /div>
Also could BIER BGP-LS extension also be used for BIER inter-as prov= isioning of stateless tree?

=C2=A0=C2=A0So possibly be u= sed for instantiation of all inter-as stateless trees based on the topologi= cal graph.=C2=A0 As the BIER trees are stateless in a way you could pre bui= ld all X-PMSI trees set the BFR bitmask for all egress PEs ahead of time pr= ovision inter-as from BFIR ingress domain to BFER egress domain.=C2=A0

There maybe other use cases or reasons for BGP-LS usage by B= IER but I think provisioning could be one of them.

Once = I have received feedback on the comments I will compile the Feedback and co= mplete the Shepherds write-up.

Kind Regards=C2=A0
<= div style=3D"font-family:UICTFontTextStyleBody;font-size:17px" dir=3D"auto"= >

Gyan
--


<= b>Gyan Mishra

Network Solutions Architect=C2=A0

M 301 502-1347=
13101 Columbia Pike=C2=A0
Silver Spring, MD


--00000000000098514d05b1eca7db-- From nobody Mon Oct 19 11:54:21 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 47FD23A0FD5; Mon, 19 Oct 2020 11:54:10 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.197 X-Spam-Level: X-Spam-Status: No, score=-0.197 tagged_above=-999 required=5 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PH3s2yizvJqY; Mon, 19 Oct 2020 11:54:09 -0700 (PDT) Received: from mail-ed1-x52b.google.com (mail-ed1-x52b.google.com [IPv6:2a00:1450:4864:20::52b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D6F8E3A1007; Mon, 19 Oct 2020 11:54:08 -0700 (PDT) Received: by mail-ed1-x52b.google.com with SMTP id 33so356564edq.13; Mon, 19 Oct 2020 11:54:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=vyU36MMpbUOMK9kwgPZyerhYX7veo+NN7+iTWR8MKUw=; b=FNzBGE/Mu5F8fWe9QXBjMLuQwh05c/a9e6BMsHhJQwSRqh/ksLOhpt0GU3LSatLWoW BYIYvpV2ObRBOSirKfyhR/2Pmm6nbETOet/YrkIU1frrWR5HDTcxSI/XYY6E9swOgE78 jPu2GZtxzM6OtMg88TFOpQDJiHggnmrsG9a9O05Dyo/s8mTA3IL73qSONw1Abr1mnefp g62GfSlxKsGEDo2aOBuj3Z6CX7dKR7WdUKS9MHh97BOIiXDERnHtb0o1OwBRLEyOSiDJ M7xttIk4euLJyROJTHuZl6MDhABMSUeFIS7iRJHy/ROe6oe1FGVpGkPZHqEdQ8uqxK+0 KBXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:reply-to :from:date:message-id:subject:to:cc; bh=vyU36MMpbUOMK9kwgPZyerhYX7veo+NN7+iTWR8MKUw=; b=qCspPdrkk95sVjuRJVjlF1UbB1OR1hTT2Q2iXu4jVs8RLkROt6rhS6zRPcC5vXsn4V g0RA4OyD7sPMbG4U/c3xZBwxVFnPNc7583dEz3lsge1ptQ1VbVr8RbWozxmAvnh5ghsX DKqklowmbMgSDaseIsHc8dMcaW9ScNeqE5XG0/p/UIbhEhHcqolDlWE7fxyIDO/6Zm08 vXjf5SS2grIl5+dNVxZJwhXEtqk59+VfkxaiK1XIAM4s7toK0ElntMFPOoLa71G5RaXu 9U3bUMsSAQALlzku5Gv0EVbMzVqWu+5o00qx9pazPofXsAgtg2Pjd6x5V3Xn6e6QfuXR M8Sw== X-Gm-Message-State: AOAM533GCueJDHmDMaDn57DnNIBAqACShh7jQflWMEEXM3bJWpUqRDw7 doHXnr4WVwpaTrpNL/vtoeM2CGbBna5fMDYub40= X-Google-Smtp-Source: ABdhPJwWi/apHELCbmIY658A7pbLWpxWulkx9lw9F2w1mQWnG2WDXwlLytB/+R56qFkKaTyl8JlVUVjiFjLjmseI8KI= X-Received: by 2002:a05:6402:359:: with SMTP id r25mr1291113edw.308.1603133647385; Mon, 19 Oct 2020 11:54:07 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Reply-To: gjshep@gmail.com From: Greg Shepherd Date: Mon, 19 Oct 2020 11:53:56 -0700 Message-ID: To: Greg Mirsky , lsr@ietf.org Cc: BIER WG , BIER WG Chairs , Alvaro Retana , draft-ietf-bier-bar-ipa@ietf.org Content-Type: multipart/alternative; boundary="0000000000009478c705b20aa3b9" Archived-At: Subject: [Bier] IS: draft-ietf-bier-bar-ipa review / WAS: Re: The Document Shepherd Write-Uo X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Oct 2020 18:54:16 -0000 --0000000000009478c705b20aa3b9 Content-Type: text/plain; charset="UTF-8" LSR-WG The following draft has completed WGLC in BIER and the Shepherd doc is published. Can you please review before we move to the queue? https://datatracker.ietf.org/doc/draft-ietf-bier-bar-ipa/ Thanks, The BIER WG (Shep/Chairs) On Thu, Sep 24, 2020 at 2:24 PM Greg Mirsky wrote: > Dear All, > the first version of the Document Shepherd's Write-Up is ready for your > review. Please let me know if you have any questions or comments. > > Regards, > Greg > --0000000000009478c705b20aa3b9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
LSR-WG

The following d= raft has completed WGLC in BIER and the Shepherd doc is published. Can you = please review before we move to the queue?


<= div>Thanks,
The BIER WG
(Shep/Chairs)

On Thu, Sep = 24, 2020 at 2:24 PM Greg Mirsky <gregimirsky@gmail.com> wrote:
Dear All,
the first version of = the Document Shepherd's Write-Up is ready for your review. Please let m= e know if you have any questions or=C2=A0comments.

Regards,
Greg
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CABNhwV0iak7PxjdR8gF3Lzfbi_QpxynOZDdyX2jx15E_AUi+_A@mail.gmail.com Mime-Version: 1.0 From: To: Cc: , , Content-Type: multipart/mixed; boundary="=====_001_next=====" X-MAIL: mse-fl1.zte.com.cn 09K2sDZl013830 Archived-At: Subject: Re: [Bier] =?utf-8?q?Shepherd=E2=80=99s_review_of_draft-ietf-bier-bg?= =?utf-8?q?p-ls-bier-ext-07?= X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Oct 2020 02:54:25 -0000 --=====_001_next===== Content-Type: multipart/related; boundary="=====_002_next=====" --=====_002_next===== Content-Type: multipart/alternative; boundary="=====_003_next=====" --=====_003_next===== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 SGkgR3lhbiwNCg0KDQp0aGFuayB5b3UgdmVyeSBtdWNoIGZvciB5b3VyIGNvbW1lbnRzIQ0KDQoN 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(2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id G7Otlqok6bj4; Mon, 19 Oct 2020 21:08:01 -0700 (PDT) Received: from mail-vs1-xe2c.google.com (mail-vs1-xe2c.google.com [IPv6:2607:f8b0:4864:20::e2c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3FBD33A09EA; Mon, 19 Oct 2020 21:08:01 -0700 (PDT) Received: by mail-vs1-xe2c.google.com with SMTP id p25so353899vsq.4; Mon, 19 Oct 2020 21:08:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=j67djPEVbAIyj7PmqWk94iLvJsygmu3e4PCkG5Qv0cY=; b=aE6Z+nXlYq88W8MTdCBEiiReDN6uYk3Ol21AD0hermOm2kkF+p+YGf9r55UzbDRRN5 76b2AOxgnMyTHfHKianK+sfjrmnPSBPk0xq+h1Ol4oyt9h/uweOw4onlnIzDKAtKavAA 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ABdhPJwqTV2WS+TAp1u8ycG/9jzUFTnqdY+jz2kReofP+5FEdD36ng/c5YhA8AHqQS27+5hXVC9bL3Hhfuh5vXq9fDY= X-Received: by 2002:a67:fc59:: with SMTP id p25mr375211vsq.5.1603166880078; Mon, 19 Oct 2020 21:08:00 -0700 (PDT) MIME-Version: 1.0 References: <202010201054135015822@zte.com.cn> In-Reply-To: <202010201054135015822@zte.com.cn> From: Gyan Mishra Date: Tue, 20 Oct 2020 00:07:49 -0400 Message-ID: To: zhang.zheng@zte.com.cn Cc: bier@ietf.org, bier-chairs@ietf.org, draft-ietf-bier-bgp-ls-bier-ext@ietf.org Content-Type: multipart/alternative; boundary="0000000000006723cd05b2126017" Archived-At: Subject: Re: [Bier] =?utf-8?q?Shepherd=E2=80=99s_review_of_draft-ietf-bier-bg?= =?utf-8?q?p-ls-bier-ext-07?= X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Oct 2020 04:08:04 -0000 --0000000000006723cd05b2126017 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Sandy Do you think it would be worthwhile to mention the reasons for collection maybe in the introduction. I think it would be helpful such as inter-as provisioning or any other reason but I really think that should be stated. I understand that according to RFC 7752 is for collection of IGP topology information of active or passive path instantiation for RSVP TE or SR-TE. Here we are not doing any traffic engineering steering although BIER behavior is similar to SR source routing. So here you have new BIER specific TLV code points being provisioned by taking the RFC 7752 prefix attribute TLV to create three new BIER specific TLVs, BIER information, BIER MPLS Encapsulation, BIER Ethernet Encapsulation. Since the BIER specifics have nothing to do with TE attributes prefix TLV you really could have chosen of the three, node attribute TLV, link attribute TLV or prefix attribute TLV. Was their any reason why you chose prefix TLV over the other two to populate the bier specifics. I noticed that the BFR prefix provisioning to each BFR is not in the any of the three new prefix TLVs provisioned. All the BGP-LS TLV code points provisioned to date are IGP LSDB related topology information to rebuild the RSVP TEDs database or SR topology on a Northbound PCE for active or passive path instantiation or TE or SR-TE steered paths. https://www.iana.org/assignments/bgp-ls-parameters/bgp-ls-parameters.xhtml Can you give an example of an application that requires topology visibility that cannot be satisfied natively without having to export the topology to a controller. Is it maybe a ODL or Openflow or other 3rd party controller use for NMS functions. If it=E2=80=99s just data that is being gathered as this is BIER specific c= ouldn=E2=80=99t you gather via NMS netconf / Yang data model for proactive monitoring of the BIER domain. If the controller is not taking action or not doing any provisioning and just passive monitoring then I think NMS functionality can be accomplished by other means other than BGP-LS. Kind Regards Gyan On Mon, Oct 19, 2020 at 10:54 PM wrote: > Hi Gyan, > > thank you very much for your comments! > > As co-author of this draft, I'd like to answer your question. > > This BGP-LS extension is used for information collection in a BIER domain= . > > It may be used for inter-AS BGP peering, but it mainly is used in a domai= n. > > According to RFC7752, the base usage of BGP-LS, is the domain information > collection done by BGP-LS, so it with BIER as well. > > The controller can get the BFR-id and other BIER relative information > through this extension. > > Best regards, > > Sandy > =E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6 > *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A*GyanMishra > *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A*BIER WG;BIER WG Chairs;draft-ietf-b= ier-bgp-ls-bier-ext@ietf.org; > *=E6=97=A5 =E6=9C=9F =EF=BC=9A*2020=E5=B9=B410=E6=9C=8818=E6=97=A5 15:08 > *=E4=B8=BB =E9=A2=98 =EF=BC=9A**Shepherd=E2=80=99s review of draft-ietf-b= ier-bgp-ls-bier-ext-07* > > > Dear Authors, > > Thank you for a well-written succinct document. > > I have a few comments and questions on the use of BGP-LS extension and > why it is necessary for BIER and what gap that exists that is being > addressed by this extension. > > What is broken today? > > The abstract and introduction describes how BIER works which anyone > reading the draft can read normative references RFC 8279 and RFC 8296. > > The last sentence says the following: > > This document specifies extensions the BGP Link-state address-family in o= rder to advertise BIER information. > > > The last sentence in the introductionstates the following: > > > In order to satisfy the need for applications that require topological vi= sibility across one area or Autonomou > > System (AS). This document specifiesextensions to the BGP Link-state add= ress-family in order to advertise BIER-specific. An external component > (e.g., a controller) then can collect BIER information in the "northbound= " > > direction within the BIER domain. > > > Section 3 goes on to describe how this new BGP-LS extension for BIER will > be able to gather the BIER specific topology information and send > Northbound to an external controller which will then build rebuild a > topological graph of the BIER domain or multiple domains for multicast > =E2=80=9Capplications=E2=80=9D that won=E2=80=99t work for without this e= xtension. > > I think in the draft it is important to note the gap that exists today > without this draft and clearly what is broken that is being fixed by the > draft. > > That should be spelled out clearly in the Introduction as well as stated > briefly in the abstract. > > Inter-AS BIER trees can be built without a controller and this BGP-LS > extension, similar to today inter-as MVPN mLDP PE P2MP TE stateful > segmented or end to end LSP trees. > > I think we need to expand more on the application visibility and what > applications I am guessing ASM, SSM trees over BIER inter-as, but I still > don=E2=80=99t understand the gap as what won=E2=80=99t work with multicas= t applications > today without this BGP-LS extension for BIER. > > Please help me understand. > > Also could BIER BGP-LS extension also be used for BIER inter-as > provisioning of stateless tree? > > So possibly be used for instantiation of all inter-as stateless trees > based on the topological graph. As the BIER trees are stateless in a way > you could pre build all X-PMSI trees set the BFR bitmask for all egress P= Es > ahead of time provision inter-as from BFIR ingress domain to BFER egress > domain. > > There maybe other use cases or reasons for BGP-LS usage by BIER but I > think provisioning could be one of them. > > Once I have received feedback on the comments I will compile the Feedback > and complete the Shepherds write-up. > > Kind Regards > > > Gyan > -- > > > > *Gyan Mishra* > > *Network Solutions A**rchitect * > > > > *M 301 502-134713101 Columbia Pike > *Silver > Spring, MD > > > > -- *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD --0000000000006723cd05b2126017 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Sandy=C2=A0

Do you think it would be worthwhile to mention the reasons for co= llection maybe in the introduction.=C2=A0 I think it would be helpful such = as inter-as provisioning or any other reason but I really think that should= be stated.=C2=A0 I understand that according to RFC 7752 is for collection= of IGP topology information of active or passive path instantiation for RS= VP TE or SR-TE.=C2=A0 Here we are not doing any traffic engineering steerin= g although BIER behavior is similar to SR source routing.=C2=A0 So here you= have new BIER specific TLV code points being provisioned by taking the RFC= 7752 prefix attribute TLV to create three new BIER specific TLVs, BIER inf= ormation, BIER MPLS Encapsulation, BIER Ethernet Encapsulation.=C2=A0 Since= the BIER specifics have nothing to do with TE attributes prefix TLV you re= ally could have chosen of the three, node attribute TLV, link attribute TLV= or prefix attribute TLV.=C2=A0 Was their any reason why you chose prefix T= LV over the other two to populate the bier specifics.=C2=A0 I noticed that = the BFR prefix provisioning to each BFR is not in the any of the three new = prefix TLVs provisioned. =C2=A0

All the BGP-LS TLV code points provisioned to date are IGP LSDB r= elated topology information to rebuild the RSVP TEDs database or SR topolog= y on a Northbound PCE for active or passive path instantiation or TE or SR-= TE steered paths.

<= a href=3D"https://www.iana.org/assignments/bgp-ls-parameters/bgp-ls-paramet= ers.xhtml">https://www.iana.org/assignments/bgp-ls-parameters/bgp-ls-parame= ters.xhtml


Can you give an example of an application that requires topology visibilit= y that cannot be satisfied natively without having to export the topology t= o a controller. Is it maybe a ODL or Openflow or other 3rd party controller= use for NMS functions. =C2=A0

If it=E2=80=99s just data that is being gathered as this is BIER spe= cific couldn=E2=80=99t you gather via NMS netconf / Yang data model for pro= active monitoring of the BIER domain.=C2=A0 If the controller is not taking= action or not doing any provisioning and just passive monitoring then I th= ink NMS functionality can be accomplished by other means other than BGP-LS.=

Kind Regards=C2=A0

Gyan

On Mon, Oct 19, 202= 0 at 10:54 PM <zhang.zheng@zte= .com.cn> wrote:

Hi Gyan,

thank you very much for your comments!

As co-author of this draft, I'd like to answer you= r question.

This BGP-LS ex= tension is used for information collection in a BIER domain.=C2=A0

It may be used for inter-AS BGP pe= ering, but it mainly is used in a domain.

According to RFC7752, the base usage of BGP-LS, is the doma= in information collection done by BGP-LS, so it with BIER as well.

The controller can get the BFR-id = and other BIER relative information through this extension.

Best regards,

Sandy

=E5=8E=9F=E5=A7=8B=E9=82=AE=E4= =BB=B6
<= div style=3D"padding:8px;background-color:rgb(245,246,248)">
= =E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9AGyanMishra=
=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9ABIER WG;BIER WG Chairs;draft-ietf-bier-bgp-ls-bier-ext@ietf.org;
=E6=97=A5 =E6=9C=9F =EF=BC=9A2020=E5=B9=B41= 0=E6=9C=8818=E6=97=A5 15:08
=E4=B8=BB =E9=A2=98 = =EF=BC=9AShepherd=E2=80=99s review of draft-ietf-bie= r-bgp-ls-bier-ext-07


De= ar Authors,

Thank you for a well-written succinct = document.=C2=A0

I have a few =C2=A0comments and question= s on the use of BGP-LS extension and why it is necessary for BIER and what = gap that exists that is being addressed by this extension.=C2=A0
What is broken today?

The abstract and introdu= ction describes how BIER works which anyone reading the draft can read norm= ative references RFC 8279 and RFC 8296.

The last sentenc= e says the following:
This document specifies =
extensions the BGP Link-state address-family in order to advertise BIER inf=
ormation.

The la=
st sentence in the introductionstates the following:

In order to satisfy the need for applications that require topological vi=
sibility across one area or Autonomou
System (AS).  This document specifiesextensions to the BGP Link-s=
tate address-family in order to advertise BIER-specific.  An external compo=
nent
(e.g., a controller) then can collect BIER information in the "northbo=
und"=C2=A0
direction with=
in the BIER domain.

Section 3 goes on to des= cribe how this new BGP-LS extension for BIER will be able to gather the BIE= R specific topology information and send Northbound to an external controll= er which will then build rebuild a topological graph of the BIER domain or = multiple domains for multicast =E2=80=9Capplications=E2=80=9D that won=E2= =80=99t work for without this extension.

I think in the = draft it is important to note the gap that exists today without this draft = and clearly what is broken that is being fixed by the draft.

That should be spelled out clearly in the Introduction as well as stat= ed briefly in the abstract. =C2=A0

Inter-AS BIER trees c= an be built without a controller and this BGP-LS extension, similar to toda= y inter-as MVPN mLDP PE P2MP TE stateful segmented or end to end LSP trees.=

I think we need to expand more on the application vis= ibility and what applications I am guessing ASM, SSM trees over BIER inter-= as, but I still don=E2=80=99t understand the gap as what won=E2=80=99t work= with multicast applications today without this BGP-LS extension for BIER.<= /div>

Please help me understand.

Also cou= ld BIER BGP-LS extension also be used for BIER inter-as provisioning of sta= teless tree?

=C2=A0=C2=A0So possibly be used for instant= iation of all inter-as stateless trees based on the topological graph.=C2= =A0 As the BIER trees are stateless in a way you could pre build all X-PMSI= trees set the BFR bitmask for all egress PEs ahead of time provision inter= -as from BFIR ingress domain to BFER egress domain.=C2=A0

There maybe other use cases or reasons for BGP-LS usage by BIER but I t= hink provisioning could be one of them.

Once I have rece= ived feedback on the comments I will compile the Feedback and complete the = Shepherds write-up.

Kind Regards=C2=A0


Gyan
--

=

Gyan Mishra

Network Solutions Architect= =C2=A0

M 301 502-1347<= br>13101 Columbia Pike=C2=A0
Silver Spring, MD



<= /p>

--


Gyan = Mishra

= Networ= k Solutions A= rchitect=C2=A0

M 301 502-1347
131= 01 Columbia Pike=C2=A0
Silver Spring, MD


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<202010201513490673419@zte.com.cn> In-Reply-To: <202010201513490673419@zte.com.cn> From: Gyan Mishra Date: Tue, 20 Oct 2020 12:20:47 -0400 Message-ID: To: zhang.zheng@zte.com.cn Cc: bier@ietf.org, bier-chairs@ietf.org, draft-ietf-bier-bgp-ls-bier-ext@ietf.org Content-Type: multipart/alternative; boundary="000000000000b0688e05b21c9dbb" Archived-At: Subject: Re: [Bier] =?utf-8?q?Shepherd=E2=80=99s_review_of_draft-ietf-bier-bg?= =?utf-8?q?p-ls-bier-ext-07?= X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Oct 2020 16:21:02 -0000 --000000000000b0688e05b21c9dbb Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Sandy Please let me know if you are going to revise the draft and make any updates from my suggestions, and then I can wait for that update and then finalize my Shepherd write-up. Kind Regards Gyan On Tue, Oct 20, 2020 at 3:13 AM wrote: > Hi Gyan, > > thank you for your suggestion! > > Please find my answer inline with Sandy>. > > Thanks, > > Sandy > =E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6 > *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A*GyanMishra > *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A*=E5=BC=A0=E5=BE=8100007940; > *=E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9A*bier@ietf.org;bier-chairs@ietf.org; > draft-ietf-bier-bgp-ls-bier-ext@ietf.org; > *=E6=97=A5 =E6=9C=9F =EF=BC=9A*2020=E5=B9=B410=E6=9C=8820=E6=97=A5 12:08 > *=E4=B8=BB =E9=A2=98 =EF=BC=9A**Re: Shepherd=E2=80=99s review of draft-ie= tf-bier-bgp-ls-bier-ext-07* > Hi Sandy > > Do you think it would be worthwhile to mention the reasons for collection > maybe in the introduction. I think it would be helpful such as inter-as > provisioning or any other reason but I really think that should be stated= . > I understand that according to RFC 7752 is for collection of IGP topology > information of active or passive path instantiation for RSVP TE or SR-TE. > Here we are not doing any traffic engineering steering although BIER > behavior is similar to SR source routing. So here you have new BIER > specific TLV code points being provisioned by taking the RFC 7752 prefix > attribute TLV to create three new BIER specific TLVs, BIER information, > BIER MPLS Encapsulation, BIER Ethernet Encapsulation. Since the BIER > specifics have nothing to do with TE attributes prefix TLV you really cou= ld > have chosen of the three, node attribute TLV, link attribute TLV or prefi= x > attribute TLV. Was their any reason why you chose prefix TLV over the > other two to populate the bier specifics. I noticed that the BFR prefix > provisioning to each BFR is not in the any of the three new prefix TLVs > > provisioned. > > Sandy> As you found, the BFR prefix is sent as BGP prefix, because BIER > > info is used as sub-TLV or sub-sub-TLV of IGP protocols, the BGP-LS > > advertisement is the same with BIER. The reason can be added in > introduction, > > but may not be many sentences, how to use it is depended on the > > network administrator. > > All the BGP-LS TLV code points provisioned to date are IGP LSDB related > topology information to rebuild the RSVP TEDs database or SR topology on = a > Northbound PCE for active or passive path instantiation or TE or SR-TE > steered paths. > > https://www.iana.org/assignments/bgp-ls-parameters/bgp-ls-parameters.xhtm= l > > > Can you give an example of an application that requires topology visibili= ty > that cannot be satisfied natively without having to export the topology t= o > a controller. Is it maybe a ODL or Openflow or other 3rd party controller > > use for NMS functions. > > Sandy> BGP-LS is used for topology collection, and the existed collection > > does not include BIER information, one of the usecase is the controller > > decide the BFERs for a specific multicast flow. > > If it=E2=80=99s just data that is being gathered as this is BIER specific= couldn=E2=80=99t > you gather via NMS netconf / Yang data model for proactive monitoring of > the BIER domain. If the controller is not taking action or not doing any > provisioning and just passive monitoring then I think NMS functionality c= an > > be accomplished by other means other than BGP-LS. > > Sandy> Yes, you are right. The information can also be got by NMS netconf > > or YANG data model. They provide different methods for network > administrator. > > Kind Regards > > Gyan > > On Mon, Oct 19, 2020 at 10:54 PM wrote: > > > Hi Gyan, > > > > thank you very much for your comments! > > > > As co-author of this draft, I'd like to answer your question. > > > > This BGP-LS extension is used for information collection in a BIER doma= in > > > -- *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD --000000000000b0688e05b21c9dbb Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Sandy=C2=A0

=
Please let me know if you are going to revise the d= raft and make any updates from my suggestions, and then I can wait for that= update and then finalize my Shepherd write-up.

=
Kind Regards=C2=A0

Gyan
On Tue, Oct 20, 2020 at 3:13 AM <zhang.zheng@zte.com.cn> wrote:

Hi Gyan,

tha= nk you for your suggestion!

Please find my answer inline with Sandy>.

Thanks,

Sandy

=E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6
=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9AGyanMishra
=E6=94=B6=E4= =BB=B6=E4=BA=BA=EF=BC=9A=E5=BC=A0= =E5=BE=8100007940;
=E6=8A=84=E9=80=81=E4=BA=BA=EF= =BC=9Abier@ietf.org;= bier-chairs@ietf.org;draft-ietf-bier-bgp-ls-bier-ext@ietf.org;
=E6=97=A5 =E6=9C=9F =EF=BC=9A2020=E5=B9=B410= =E6=9C=8820=E6=97=A5 12:08
=E4=B8=BB =E9=A2=98 =EF= =BC=9ARe: Shepherd=E2=80=99s review of draft-ietf-bi= er-bgp-ls-bier-ext-07
Hi=C2=A0Sa= ndy

Do=C2=A0you=C2=A0think=C2=A0it=C2=A0would=C2=A0be=C2=A0worthwhil= e=C2=A0to=C2=A0mention=C2=A0the=C2=A0reasons=C2=A0for=C2=A0collection
ma= ybe=C2=A0in=C2=A0the=C2=A0introduction.=C2=A0=C2=A0I=C2=A0think=C2=A0it=C2= =A0would=C2=A0be=C2=A0helpful=C2=A0such=C2=A0as=C2=A0inter-as
provisioni= ng=C2=A0or=C2=A0any=C2=A0other=C2=A0reason=C2=A0but=C2=A0I=C2=A0really=C2= =A0think=C2=A0that=C2=A0should=C2=A0be=C2=A0stated.
I=C2=A0understand=C2= =A0that=C2=A0according=C2=A0to=C2=A0RFC=C2=A07752=C2=A0is=C2=A0for=C2=A0col= lection=C2=A0of=C2=A0IGP=C2=A0topology
information=C2=A0of=C2=A0active= =C2=A0or=C2=A0passive=C2=A0path=C2=A0instantiation=C2=A0for=C2=A0RSVP=C2=A0= TE=C2=A0or=C2=A0SR-TE.
Here=C2=A0we=C2=A0are=C2=A0not=C2=A0doing=C2=A0an= y=C2=A0traffic=C2=A0engineering=C2=A0steering=C2=A0although=C2=A0BIER
be= havior=C2=A0is=C2=A0similar=C2=A0to=C2=A0SR=C2=A0source=C2=A0routing.=C2=A0= =C2=A0So=C2=A0here=C2=A0you=C2=A0have=C2=A0new=C2=A0BIER
specific=C2=A0T= LV=C2=A0code=C2=A0points=C2=A0being=C2=A0provisioned=C2=A0by=C2=A0taking=C2= =A0the=C2=A0RFC=C2=A07752=C2=A0prefix
attribute=C2=A0TLV=C2=A0to=C2=A0cr= eate=C2=A0three=C2=A0new=C2=A0BIER=C2=A0specific=C2=A0TLVs,=C2=A0BIER=C2=A0= information,
BIER=C2=A0MPLS=C2=A0Encapsulation,=C2=A0BIER=C2=A0Ethernet= =C2=A0Encapsulation.=C2=A0=C2=A0Since=C2=A0the=C2=A0BIER
specifics=C2=A0= have=C2=A0nothing=C2=A0to=C2=A0do=C2=A0with=C2=A0TE=C2=A0attributes=C2=A0pr= efix=C2=A0TLV=C2=A0you=C2=A0really=C2=A0could
have=C2=A0chosen=C2=A0of= =C2=A0the=C2=A0three,=C2=A0node=C2=A0attribute=C2=A0TLV,=C2=A0link=C2=A0att= ribute=C2=A0TLV=C2=A0or=C2=A0prefix
attribute=C2=A0TLV.=C2=A0=C2=A0Was= =C2=A0their=C2=A0any=C2=A0reason=C2=A0why=C2=A0you=C2=A0chose=C2=A0prefix= =C2=A0TLV=C2=A0over=C2=A0the
other=C2=A0two=C2=A0to=C2=A0populate=C2=A0t= he=C2=A0bier=C2=A0specifics.=C2=A0=C2=A0I=C2=A0noticed=C2=A0that=C2=A0the= =C2=A0BFR=C2=A0prefix
provisioning=C2=A0to=C2=A0each=C2=A0BFR=C2=A0is=C2= =A0not=C2=A0in=C2=A0the=C2=A0any=C2=A0of=C2=A0the=C2=A0three=C2=A0new=C2=A0= prefix=C2=A0TLVs

provisioned.

Sandy> As you found, the BFR p= refix is sent as BGP prefix, because BIER=C2=A0

info is used as sub-T= LV or sub-sub-TLV of IGP protocols, the BGP-LS=C2=A0

advertisement is= the same with BIER. The reason can be added in introduction,=C2=A0

b= ut may not be many sentences, how to use it is depended on the=C2=A0

= network administrator.


All=C2=A0the=C2=A0BGP-LS=C2=A0TLV=C2=A0code= =C2=A0points=C2=A0provisioned=C2=A0to=C2=A0date=C2=A0are=C2=A0IGP=C2=A0LSDB= =C2=A0related
topology=C2=A0information=C2=A0to=C2=A0rebuild=C2=A0the=C2= =A0RSVP=C2=A0TEDs=C2=A0database=C2=A0or=C2=A0SR=C2=A0topology=C2=A0on=C2=A0= a
Northbound=C2=A0PCE=C2=A0for=C2=A0active=C2=A0or=C2=A0passive=C2=A0pat= h=C2=A0instantiation=C2=A0or=C2=A0TE=C2=A0or=C2=A0SR-TE
steered=C2=A0pat= hs.

https://www.iana.org/assignments/b= gp-ls-parameters/bgp-ls-parameters.xhtml


Can=C2=A0you=C2=A0g= ive=C2=A0an=C2=A0example=C2=A0of=C2=A0an=C2=A0application=C2=A0that=C2=A0re= quires=C2=A0topology=C2=A0visibility
that=C2=A0cannot=C2=A0be=C2=A0satis= fied=C2=A0natively=C2=A0without=C2=A0having=C2=A0to=C2=A0export=C2=A0the=C2= =A0topology=C2=A0to
a=C2=A0controller.=C2=A0Is=C2=A0it=C2=A0maybe=C2=A0a= =C2=A0ODL=C2=A0or=C2=A0Openflow=C2=A0or=C2=A0other=C2=A03rd=C2=A0party=C2= =A0controller

use=C2=A0for=C2=A0NMS=C2=A0functions.

Sandy> B= GP-LS is used for topology collection, and the existed collection=C2=A0

=

does not include BIER information, one of the usecase is the controller= =C2=A0

decide the BFERs for a specific multicast flow.=C2=A0


I= f=C2=A0it=E2=80=99s=C2=A0just=C2=A0data=C2=A0that=C2=A0is=C2=A0being=C2=A0g= athered=C2=A0as=C2=A0this=C2=A0is=C2=A0BIER=C2=A0specific=C2=A0couldn=E2=80= =99t
you=C2=A0gather=C2=A0via=C2=A0NMS=C2=A0netconf=C2=A0/=C2=A0Yang=C2= =A0data=C2=A0model=C2=A0for=C2=A0proactive=C2=A0monitoring=C2=A0of
the= =C2=A0BIER=C2=A0domain.=C2=A0=C2=A0If=C2=A0the=C2=A0controller=C2=A0is=C2= =A0not=C2=A0taking=C2=A0action=C2=A0or=C2=A0not=C2=A0doing=C2=A0any
prov= isioning=C2=A0and=C2=A0just=C2=A0passive=C2=A0monitoring=C2=A0then=C2=A0I= =C2=A0think=C2=A0NMS=C2=A0functionality=C2=A0can

be=C2=A0accomplished= =C2=A0by=C2=A0other=C2=A0means=C2=A0other=C2=A0than=C2=A0BGP-LS.

Sand= y> Yes, you are right. The information can also be got by NMS netconf=C2= =A0

or YANG data model. They provide different methods for network ad= ministrator.


Kind=C2=A0Regards

Gyan

On=C2=A0Mon,=C2=A0Oct=C2=A0= 19,=C2=A02020=C2=A0at=C2=A010:54=C2=A0PM=C2=A0<zhang.zheng@zte.com.cn>=C2=A0wrot= e:

>=C2=A0Hi=C2=A0Gyan,
>
>=C2=A0thank=C2=A0you=C2=A0= very=C2=A0much=C2=A0for=C2=A0your=C2=A0comments!
>
>=C2=A0As=C2= =A0co-author=C2=A0of=C2=A0this=C2=A0draft,=C2=A0I'd=C2=A0like=C2=A0to= =C2=A0answer=C2=A0your=C2=A0question.
>
>=C2=A0This=C2=A0BGP-LS= =C2=A0extension=C2=A0is=C2=A0used=C2=A0for=C2=A0information=C2=A0collection= =C2=A0in=C2=A0a=C2=A0BIER=C2=A0domain


<= /p>

--


Gyan = Mishra

= Networ= k Solutions A= rchitect=C2=A0

M 301 502-1347
131= 01 Columbia Pike=C2=A0
Silver Spring, MD


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SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_REMOTE_IMAGE=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4cm0-65yR_K7; Thu, 22 Oct 2020 16:30:19 -0700 (PDT) Received: from mail-vs1-xe35.google.com (mail-vs1-xe35.google.com [IPv6:2607:f8b0:4864:20::e35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C42253A0880; Thu, 22 Oct 2020 16:30:18 -0700 (PDT) Received: by mail-vs1-xe35.google.com with SMTP id n18so1878336vsl.2; Thu, 22 Oct 2020 16:30:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Pz/+BEqvaUpAaq6c1nEUASOlZXsE116H1yFEGN0TpCo=; b=d7EO50qGdEyDGUnkWOFMvXBD0nc6vjemlNB+lpGal3KaQuKY/WfKlV0kzDR0lARU4n zz2gySnSUXwdMKwE+Qlzkp4tKM99YlFC4GqKpW3Bmef7BcYg60jS1Xg1nO7VJioS/bHr +cAS9bowM5VYeWxTThrbaItkPAYalIPsE9iDgc/jJWdlEWkaxfk5dktUcvjZI7QdBZ9M 6WqVFms4D1sFH5nWWlwihfxxTOKU4+YbJvtNKH5ks5Vsl/DWn+/c6FTKDCDNw/3fHZq2 TXptJ3osI56qxhKYbl1BqEXJa9ZUY//ZtRwgmS1z85Ph/HT4tPf5nmwKtjhYhI9mcbrR u0uw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Pz/+BEqvaUpAaq6c1nEUASOlZXsE116H1yFEGN0TpCo=; b=X2y3r+ZFE9IqsQkPpEZpGzwSIHfuzDkRKIJHPNN/xF5COF9H4Nm7V8OTGmCAjC06pc 7ms/AorVX68M7WEqUgOmHoDWWUWzRY6AA8J0Ty8HBoIc2VUWCD4vFKCPupufNkJNYkBY +mTN1kLm4k87VIEuQWOP5zE1arwNoxJqW9grJbmnQfVlaWTejW/1pePiYfa3GRdOTQSa xNbNYAlEkMgt/2KutLS6zIIxGTp0/mJGQIB8CZ3lVw5dZqngbQMMexEiWy8HMWOehqtE F9S1M/mTpxnTgBmA2FSMCDhZi93NrJG3ipVyknXVlLo7pjey5jDMKXBGGLHxnOjTQpJA 1LHQ== X-Gm-Message-State: AOAM5330QCiaRZWHqdCcIQVykwO/fQFSQBBJZ1nlNdeHtIv4OAAxlLbs XoXXDxIjFsklAoBNRivTwUiISHUsDv7DobH1hLk= X-Google-Smtp-Source: ABdhPJzz5zlQeQlQWwHNBiLL5Jhw0FWANyv5PNZxkikuSvJgdQTxoDM3rG6vZgAuA6XoHeSt9zjF/WXM6PEeXRfla3E= X-Received: by 2002:a67:1986:: with SMTP id 128mr3994738vsz.20.1603409417573; Thu, 22 Oct 2020 16:30:17 -0700 (PDT) MIME-Version: 1.0 References: <202010211001570092448@zte.com.cn> <202010211652080465785@zte.com.cn> In-Reply-To: <202010211652080465785@zte.com.cn> From: Gyan Mishra Date: Thu, 22 Oct 2020 19:23:53 -0400 Message-ID: To: chen.ran@zte.com.cn Cc: BIER WG , draft-ietf-bier-bgp-ls-bier-ext@ietf.org, BIER WG Chairs Content-Type: multipart/alternative; boundary="000000000000c39ef305b24ad81e" Archived-At: Subject: Re: [Bier] =?utf-8?q?Shepherd=E2=80=99s_review_of_draft-ietf-bier-bg?= =?utf-8?q?p-ls-bier-ext-07?= X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Oct 2020 23:30:21 -0000 --000000000000c39ef305b24ad81e Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Ran Thank you Will look out for the update. Kind Regards Gyan On Wed, Oct 21, 2020 at 4:52 AM wrote: > Hi Gyan, > > Thank you very much for your valuable comments, we will update it as soon > as possible. > > > Best Regards, > > Ran > > > =E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6 > *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A*=E5=BC=A0=E5=BE=8100007940 > *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A*hayabusagsm@gmail.com;=E9=99=88=E7= =84=B600080434; > *=E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9A*bier@ietf.org;draft-ietf-bier-bgp-l= s-bier-ext@ietf.org; > bier-chairs@ietf.org; > *=E6=97=A5 =E6=9C=9F =EF=BC=9A*2020=E5=B9=B410=E6=9C=8821=E6=97=A5 10:02 > *=E4=B8=BB =E9=A2=98 =EF=BC=9A**Re: [Bier] Shepherd=E2=80=99s review of > draft-ietf-bier-bgp-ls-bier-ext-07* > _______________________________________________ > BIER mailing list > BIER@ietf.org > https://www.ietf.org/mailman/listinfo/bier > > Hi Gyan, > > Ran will consider your suggestion and make some changes. > > Thank you for your suggestion! > > Thanks, > > Sandy > > > *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A*GyanMishra > *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A*=E5=BC=A0=E5=BE=8100007940; > *=E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9A*bier@ietf.org;bier-chairs@ietf.org; > draft-ietf-bier-bgp-ls-bier-ext@ietf.org; > *=E6=97=A5 =E6=9C=9F =EF=BC=9A*2020=E5=B9=B410=E6=9C=8821=E6=97=A5 00:21 > *=E4=B8=BB =E9=A2=98 =EF=BC=9A**Re: Shepherd=E2=80=99s review of draft-ie= tf-bier-bgp-ls-bier-ext-07* > > Hi Sandy > > Please let me know if you are going to revise the draft and make any > updates from my suggestions, and then I can wait for that update and then > finalize my Shepherd write-up. > > Kind Regards > > Gyan > On Tue, Oct 20, 2020 at 3:13 AM wrote: > >> Hi Gyan, >> >> thank you for your suggestion! >> >> Please find my answer inline with Sandy>. >> >> Thanks, >> >> Sandy >> =E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6 >> *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A*GyanMishra >> *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A*=E5=BC=A0=E5=BE=8100007940; >> *=E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9A*bier@ietf.org;bier-chairs@ietf.org= ; >> draft-ietf-bier-bgp-ls-bier-ext@ietf.org; >> *=E6=97=A5 =E6=9C=9F =EF=BC=9A*2020=E5=B9=B410=E6=9C=8820=E6=97=A5 12:08 >> *=E4=B8=BB =E9=A2=98 =EF=BC=9A**Re: Shepherd=E2=80=99s review of draft-i= etf-bier-bgp-ls-bier-ext-07* >> Hi Sandy >> >> Do you think it would be worthwhile to mention the reasons for collectio= n >> maybe in the introduction. I think it would be helpful such as inter-as >> provisioning or any other reason but I really think that should be state= d. >> I understand that according to RFC 7752 is for collection of IGP topolog= y >> information of active or passive path instantiation for RSVP TE or SR-TE= . >> Here we are not doing any traffic engineering steering although BIER >> behavior is similar to SR source routing. So here you have new BIER >> specific TLV code points being provisioned by taking the RFC 7752 prefix >> attribute TLV to create three new BIER specific TLVs, BIER information, >> BIER MPLS Encapsulation, BIER Ethernet Encapsulation. Since the BIER >> >> specifics have nothing to do with TE attributes prefix TLV you really co= uld >> have chosen of the three, node attribute TLV, link attribute TLV or pref= ix >> attribute TLV. Was their any reason why you chose prefix TLV over the >> other two to populate the bier specifics. I noticed that the BFR prefix >> provisioning to each BFR is not in the any of the three new prefix TLVs >> >> provisioned. >> >> Sandy> As you found, the BFR prefix is sent as BGP prefix, because BIER >> >> info is used as sub-TLV or sub-sub-TLV of IGP protocols, the BGP-LS >> >> advertisement is the same with BIER. The reason can be added in >> introduction, >> >> but may not be many sentences, how to use it is depended on the >> >> network administrator. >> >> All the BGP-LS TLV code points provisioned to date are IGP LSDB related >> topology information to rebuild the RSVP TEDs database or SR topology on= a >> Northbound PCE for active or passive path instantiation or TE or SR-TE >> steered paths. >> >> https://www.iana.org/assignments/bgp-ls-parameters/bgp-ls-parameters.xht= ml >> >> >> >> Can you give an example of an application that requires topology visibil= ity >> that cannot be satisfied natively without having to export the topology = to >> a controller. Is it maybe a ODL or Openflow or other 3rd party controlle= r >> >> use for NMS functions. >> >> Sandy> BGP-LS is used for topology collection, and the existed collectio= n >> >> does not include BIER information, one of the usecase is the controller >> >> decide the BFERs for a specific multicast flow. >> >> If it=E2=80=99s just data that is being gathered as this is BIER specifi= c couldn=E2=80=99t >> you gather via NMS netconf / Yang data model for proactive monitoring of >> the BIER domain. If the controller is not taking action or not doing an= y >> >> provisioning and just passive monitoring then I think NMS functionality = can >> >> be accomplished by other means other than BGP-LS. >> >> Sandy> Yes, you are right. The information can also be got by NMS netcon= f >> >> or YANG data model. They provide different methods for network >> administrator. >> >> Kind Regards >> >> Gyan >> >> On Mon, Oct 19, 2020 at 10:54 PM wrote: >> >> > Hi Gyan, >> > >> > thank you very much for your comments! >> > >> > As co-author of this draft, I'd like to answer your question. >> > >> >> > This BGP-LS extension is used for information collection in a BIER dom= ain >> >> >> -- > > > > *Gyan Mishra* > > *Network Solutions A**rchitect * > > > > *M 301 502-134713101 Columbia Pike *Silver Spring, MD > > > --=20 *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD --000000000000c39ef305b24ad81e Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Ran

Thank you

Will look out for the update.

Kind Regards

Gyan

On Wed, Oct 21, 2020 at 4:52 AM <chen.ran@zte.com.cn> wrote:

Hi Gyan,

Thank you very much for your valuable comments, we will update it= as soon as possible.


=

Best Regards,

Ran


=E5=8E=9F=E5=A7= =8B=E9=82=AE=E4=BB=B6
=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A=E5=BC= =A0=E5=BE=8100007940
=E6=94=B6=E4=BB=B6=E4=BA=BA= =EF=BC=9Ahayabusagsm@gmail.com;=E9=99=88=E7=84=B600080434;
=E6=97=A5 =E6=9C= =9F =EF=BC=9A2020=E5=B9=B410=E6=9C=8821=E6=97=A5 10:02
=E4=B8=BB =E9=A2=98 =EF=BC=9ARe:= [Bier] Shepherd=E2=80=99s review of draft-ietf-bier-bgp-ls-bier-ext-07
______________________________= _________________
BIER=C2=A0mailing=C2=A0list
BIER@ietf.org
https://www.ietf.org/mailman= /listinfo/bier

Hi Gyan,

Ran will co= nsider your suggestion and make some changes.

Thank you for your suggestion!

Thanks,

Sandy


=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9AGyanMishra
=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A=E5=BC=A0=E5=BE=8100007940;
=E6=97=A5 =E6=9C=9F =EF= =BC=9A2020=E5=B9=B410=E6=9C=8821=E6=97=A5 00:21
=
=E4=B8=BB =E9=A2=98 =EF=BC=9ARe: Shephe= rd=E2=80=99s review of draft-ietf-bier-bgp-ls-bier-ext-07

Hi Sandy=C2= =A0

Please let me know i= f you are going to revise the draft and make any updates from my suggestion= s, and then I can wait for that update and then finalize my Shepherd write-= up.

Kind Regards=C2=A0

Gyan
On Tue, Oct 20= , 2020 at 3:13 AM <zhang.zheng@zte.com.cn> wrote:

Hi Gyan,

thank you fo= r your suggestion!

Please = find my answer inline with Sandy>.

Thanks,

Sandy<= /p>

=E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6
=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9AGyanMishra
=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A=E5=BC=A0=E5=BE=8100007940;
=E6=97= =A5 =E6=9C=9F =EF=BC=9A2020=E5=B9=B410=E6=9C=8820=E6=97=A5 12:08
=E4=B8=BB =E9=A2=98 =EF=BC=9ARe: Shepherd= =E2=80=99s review of draft-ietf-bier-bgp-ls-bier-ext-07
Hi=C2=A0Sandy

Do=C2=A0you=C2=A0think=C2=A0it=C2=A0w= ould=C2=A0be=C2=A0worthwhile=C2=A0to=C2=A0mention=C2=A0the=C2=A0reasons=C2= =A0for=C2=A0collection
maybe=C2=A0in=C2=A0the=C2=A0introduction.=C2=A0= =C2=A0I=C2=A0think=C2=A0it=C2=A0would=C2=A0be=C2=A0helpful=C2=A0such=C2=A0a= s=C2=A0inter-as
provisioning=C2=A0or=C2=A0any=C2=A0other=C2=A0reason=C2= =A0but=C2=A0I=C2=A0really=C2=A0think=C2=A0that=C2=A0should=C2=A0be=C2=A0sta= ted.
I=C2=A0understand=C2=A0that=C2=A0according=C2=A0to=C2=A0RFC=C2=A077= 52=C2=A0is=C2=A0for=C2=A0collection=C2=A0of=C2=A0IGP=C2=A0topology
infor= mation=C2=A0of=C2=A0active=C2=A0or=C2=A0passive=C2=A0path=C2=A0instantiatio= n=C2=A0for=C2=A0RSVP=C2=A0TE=C2=A0or=C2=A0SR-TE.
Here=C2=A0we=C2=A0are= =C2=A0not=C2=A0doing=C2=A0any=C2=A0traffic=C2=A0engineering=C2=A0steering= =C2=A0although=C2=A0BIER
behavior=C2=A0is=C2=A0similar=C2=A0to=C2=A0SR= =C2=A0source=C2=A0routing.=C2=A0=C2=A0So=C2=A0here=C2=A0you=C2=A0have=C2=A0= new=C2=A0BIER
specific=C2=A0TLV=C2=A0code=C2=A0points=C2=A0being=C2=A0pr= ovisioned=C2=A0by=C2=A0taking=C2=A0the=C2=A0RFC=C2=A07752=C2=A0prefix
at= tribute=C2=A0TLV=C2=A0to=C2=A0create=C2=A0three=C2=A0new=C2=A0BIER=C2=A0spe= cific=C2=A0TLVs,=C2=A0BIER=C2=A0information,
BIER=C2=A0MPLS=C2=A0Encapsu= lation,=C2=A0BIER=C2=A0Ethernet=C2=A0Encapsulation.=C2=A0=C2=A0Since=C2=A0t= he=C2=A0BIER
specifics=C2=A0have=C2=A0nothing=C2=A0to=C2=A0do=C2=A0with= =C2=A0TE=C2=A0attributes=C2=A0prefix=C2=A0TLV=C2=A0you=C2=A0really=C2=A0cou= ld
have=C2=A0chosen=C2=A0of=C2=A0the=C2=A0three,=C2=A0node=C2=A0attribut= e=C2=A0TLV,=C2=A0link=C2=A0attribute=C2=A0TLV=C2=A0or=C2=A0prefix
attrib= ute=C2=A0TLV.=C2=A0=C2=A0Was=C2=A0their=C2=A0any=C2=A0reason=C2=A0why=C2=A0= you=C2=A0chose=C2=A0prefix=C2=A0TLV=C2=A0over=C2=A0the
other=C2=A0two=C2= =A0to=C2=A0populate=C2=A0the=C2=A0bier=C2=A0specifics.=C2=A0=C2=A0I=C2=A0no= ticed=C2=A0that=C2=A0the=C2=A0BFR=C2=A0prefix
provisioning=C2=A0to=C2=A0= each=C2=A0BFR=C2=A0is=C2=A0not=C2=A0in=C2=A0the=C2=A0any=C2=A0of=C2=A0the= =C2=A0three=C2=A0new=C2=A0prefix=C2=A0TLVs

provisioned.

Sandy&g= t; As you found, the BFR prefix is sent as BGP prefix, because BIER=C2=A0

info is used as sub-TLV or sub-sub-TLV of IGP protocols, the BGP-LS=C2= =A0

advertisement is the same with BIER. The reason can be added in i= ntroduction,=C2=A0

but may not be many sentences, how to use it is de= pended on the=C2=A0

network administrator.


All=C2=A0the=C2=A0B= GP-LS=C2=A0TLV=C2=A0code=C2=A0points=C2=A0provisioned=C2=A0to=C2=A0date=C2= =A0are=C2=A0IGP=C2=A0LSDB=C2=A0related
topology=C2=A0information=C2=A0to= =C2=A0rebuild=C2=A0the=C2=A0RSVP=C2=A0TEDs=C2=A0database=C2=A0or=C2=A0SR=C2= =A0topology=C2=A0on=C2=A0a
Northbound=C2=A0PCE=C2=A0for=C2=A0active=C2= =A0or=C2=A0passive=C2=A0path=C2=A0instantiation=C2=A0or=C2=A0TE=C2=A0or=C2= =A0SR-TE
steered=C2=A0paths.

https:= //www.iana.org/assignments/bgp-ls-parameters/bgp-ls-parameters.xhtml

Can=C2=A0you=C2=A0give=C2=A0an=C2=A0example=C2=A0of=C2=A0an=C2=A0a= pplication=C2=A0that=C2=A0requires=C2=A0topology=C2=A0visibility
that=C2= =A0cannot=C2=A0be=C2=A0satisfied=C2=A0natively=C2=A0without=C2=A0having=C2= =A0to=C2=A0export=C2=A0the=C2=A0topology=C2=A0to
a=C2=A0controller.=C2= =A0Is=C2=A0it=C2=A0maybe=C2=A0a=C2=A0ODL=C2=A0or=C2=A0Openflow=C2=A0or=C2= =A0other=C2=A03rd=C2=A0party=C2=A0controller

use=C2=A0for=C2=A0NMS=C2= =A0functions.

Sandy> BGP-LS is used for topology collection, and t= he existed collection=C2=A0

does not include BIER information, one of= the usecase is the controller=C2=A0

decide the BFERs for a specific = multicast flow.=C2=A0


If=C2=A0it=E2=80=99s=C2=A0just=C2=A0data=C2=A0= that=C2=A0is=C2=A0being=C2=A0gathered=C2=A0as=C2=A0this=C2=A0is=C2=A0BIER= =C2=A0specific=C2=A0couldn=E2=80=99t
you=C2=A0gather=C2=A0via=C2=A0NMS= =C2=A0netconf=C2=A0/=C2=A0Yang=C2=A0data=C2=A0model=C2=A0for=C2=A0proactive= =C2=A0monitoring=C2=A0of
the=C2=A0BIER=C2=A0domain.=C2=A0=C2=A0If=C2=A0t= he=C2=A0controller=C2=A0is=C2=A0not=C2=A0taking=C2=A0action=C2=A0or=C2=A0no= t=C2=A0doing=C2=A0any
provisioning=C2=A0and=C2=A0just=C2=A0passive=C2=A0= monitoring=C2=A0then=C2=A0I=C2=A0think=C2=A0NMS=C2=A0functionality=C2=A0can=

be=C2=A0accomplished=C2=A0by=C2=A0other=C2=A0means=C2=A0other=C2=A0t= han=C2=A0BGP-LS.

Sandy> Yes, you are right. The information can al= so be got by NMS netconf=C2=A0

or YANG data model. They provide diffe= rent methods for network administrator.


Kind=C2=A0= Regards

Gyan

On=C2=A0Mon,=C2=A0Oct=C2=A019,=C2=A02020=C2=A0at= =C2=A010:54=C2=A0PM=C2=A0<zhang.zheng@zte.com.cn>=C2=A0wrote:

>=C2=A0H= i=C2=A0Gyan,
>
>=C2=A0thank=C2=A0you=C2=A0very=C2=A0much=C2=A0f= or=C2=A0your=C2=A0comments!
>
>=C2=A0As=C2=A0co-author=C2=A0of= =C2=A0this=C2=A0draft,=C2=A0I'd=C2=A0like=C2=A0to=C2=A0answer=C2=A0your= =C2=A0question.
>
>=C2=A0This=C2=A0BGP-LS=C2=A0extension=C2=A0i= s=C2=A0used=C2=A0for=C2=A0information=C2=A0collection=C2=A0in=C2=A0a=C2=A0B= IER=C2=A0domain


=
--


Gyan= Mishra

<= em>Network Solutions Architect=C2=A0

M 301 502-1347
13101 Columbia Pike=C2=A0
S= ilver Spring, MD





--


=

Gyan Mishra

Network Solutions Architect=C2=A0<= /font>

M 301 502-1347
13101 Columbia Pike=C2= =A0
Silver Spring, MD


--000000000000c39ef305b24ad81e-- From nobody Fri Oct 23 14:21:07 2020 Return-Path: X-Original-To: bier@ietf.org Delivered-To: bier@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 9F79B3A1546; Fri, 23 Oct 2020 14:16:36 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: "\"IETF Secretariat\"" To: , Cc: aretana.ietf@gmail.com, bier@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.20.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <160348779664.5087.6600737336990680270@ietfa.amsl.com> Date: Fri, 23 Oct 2020 14:16:36 -0700 Archived-At: Subject: [Bier] bier - Requested session has been scheduled for IETF 109 X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Oct 2020 21:16:39 -0000 Dear Greg Shepherd, The session(s) that you have requested have been scheduled. Below is the scheduled session information followed by the original request. bier Session 1 (2:00 requested) Wednesday, 18 November 2020, Session I 1200-1400 Room Name: Room 5 size: 505 --------------------------------------------- iCalendar: https://datatracker.ietf.org/meeting/109/sessions/bier.ics Request Information: --------------------------------------------------------- Working Group Name: Bit Indexed Explicit Replication Area Name: Routing Area Session Requester: Greg Shepherd Number of Sessions: 1 Length of Session(s): 2 Hours Number of Attendees: 50 Conflicts to Avoid: Chair Conflict: mboned pim roll lsr mpls People who must be present: Tony Przygienda Greg Shepherd Alvaro Retana Resources Requested: Special Requests: --------------------------------------------------------- From nobody Sun Oct 25 18:37:45 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3CB233A178F; 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Mon, 26 Oct 2020 23:55:26 -0700 (PDT) MIME-Version: 1.0 References: <202010260937312801178@zte.com.cn> In-Reply-To: <202010260937312801178@zte.com.cn> From: Gyan Mishra Date: Tue, 27 Oct 2020 02:55:15 -0400 Message-ID: To: zhang.zheng@zte.com.cn Cc: bier@ietf.org, bier-chairs@ietf.org Content-Type: multipart/alternative; boundary="00000000000019c36405b2a188c2" Archived-At: Subject: Re: [Bier] Call for BIER presentation items in IETF109# X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Oct 2020 06:55:29 -0000 --00000000000019c36405b2a188c2 Content-Type: text/plain; charset="UTF-8" Hi Sandy I will would like to request a 10-15 minute time slot for the BIER Requirements draft. Thank you Gyan On Sun, Oct 25, 2020 at 9:37 PM wrote: > Hi all, > > > BIER meeting is scheduled on Wednesday, Nov 18th, 12:00-14:00 ICT (UTC +7). > > If you would like to present at the meeting, please send a request to me > with "Presentation draft, the amount of time, presenter". > > > Thanks, > > Sandy (Secretary) > > > _______________________________________________ > BIER mailing list > BIER@ietf.org > https://www.ietf.org/mailman/listinfo/bier > -- *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD --00000000000019c36405b2a188c2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Sandy=C2=A0

I will would like to request a 10-15 minute time slot for the BIE= R Requirements draft.

Th= ank you=C2=A0

Gyan
=

O= n Sun, Oct 25, 2020 at 9:37 PM <zhang.zheng@zte.com.cn> wrote:

Hi all,


BIER mee= ting is scheduled on Wednesday, Nov 18th, 12:00-14:00 ICT (UTC +7).

If you would like to present at the meeti= ng, please send a request to me with "Presentation draft, the amount o= f time, presenter".=C2=A0


Than= ks,

Sandy (Secretary)

_______________________________________________
BIER mailing list
BIER@ietf.org
https://www.ietf.org/mailman/listinfo/bier
--
--00000000000019c36405b2a188c2-- From nobody Tue Oct 27 04:10:41 2020 Return-Path: X-Original-To: bier@ietf.org Delivered-To: bier@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id AAD3E3A16E7; Tue, 27 Oct 2020 04:10:39 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: bier@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.21.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: bier@ietf.org Message-ID: <160379703965.2328.11481304392237035217@ietfa.amsl.com> Date: Tue, 27 Oct 2020 04:10:39 -0700 Archived-At: Subject: [Bier] I-D Action: draft-ietf-bier-entropy-staged-dc-clos-04.txt X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Oct 2020 11:10:40 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Bit Indexed Explicit Replication WG of the IETF. Title : Use of BIER Entropy for Data Center Clos Networks Authors : Jingrong Xie Xiaohu Xu Gang Yan Mike McBride Filename : draft-ietf-bier-entropy-staged-dc-clos-04.txt Pages : 9 Date : 2020-10-27 Abstract: Bit Index Explicit Replication (BIER) introduces a new multicast- specific BIER Header. BIER can be applied to the Multi Protocol Label Switching (MPLS) data plane or Non-MPLS data plane. Entropy is a technique used in BIER to support load-balancing. This document examines and describes how BIER Entropy is to be applied to Data Center Clos networks for path selection. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bier-entropy-staged-dc-clos/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bier-entropy-staged-dc-clos-04 https://datatracker.ietf.org/doc/html/draft-ietf-bier-entropy-staged-dc-clos-04 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bier-entropy-staged-dc-clos-04 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Wed Oct 28 02:45:00 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 87EE93A098D; Wed, 28 Oct 2020 02:44:59 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id s28b71oczGrU; Wed, 28 Oct 2020 02:44:58 -0700 (PDT) Received: from huawei.com (lhrrgout.huawei.com [185.176.76.210]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F2FD33A0990; Wed, 28 Oct 2020 02:44:57 -0700 (PDT) Received: from lhreml717-chm.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id 1DA108EFA36710E29FAA; Wed, 28 Oct 2020 09:44:56 +0000 (GMT) Received: from dggeme752-chm.china.huawei.com (10.3.19.98) by lhreml717-chm.china.huawei.com (10.201.108.68) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.1913.5; Wed, 28 Oct 2020 09:44:55 +0000 Received: from dggeme752-chm.china.huawei.com (10.3.19.98) by dggeme752-chm.china.huawei.com (10.3.19.98) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1913.5; Wed, 28 Oct 2020 17:44:53 +0800 Received: from dggeme752-chm.china.huawei.com ([10.6.80.76]) by dggeme752-chm.china.huawei.com ([10.6.80.76]) with mapi id 15.01.1913.007; Wed, 28 Oct 2020 17:44:53 +0800 From: "Gengxuesong (Geng Xuesong)" To: "draft-ietf-bier-te-arch@ietf.org" CC: BIER WG , BIER WG Chairs Thread-Topic: IPR disclosure against draft-ietf-bier-te-arch Thread-Index: AdatDtOqpDooL8tDQaO5kpXB2F944A== Date: Wed, 28 Oct 2020 09:44:53 +0000 Message-ID: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.48.29.117] Content-Type: multipart/alternative; boundary="_000_c5c9947de2ec463199872610561a1f8ehuaweicom_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: [Bier] IPR disclosure against draft-ietf-bier-te-arch X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Oct 2020 09:45:00 -0000 --_000_c5c9947de2ec463199872610561a1f8ehuaweicom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear authors of BIER draft-ietf-bier-te-arch As the document shepherd, i am hereby asking each of you to confirm that an= y and all appropriate IPR disclosures required for full conformance with th= e provisions of BCP 78 and BCP 79 have already been filed. Currently, there is one disclosure: https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-ietf-bie= r-te-arch Hint: "I am not aware of any IPR against draft-ietf-bier-te-arch that has not alr= eady been disclosed to the IETF" is a perfect answer to the question raised= by this email (if it is true). Please make sure to be aware of any IPR wit= h your name on it. Thank you very much Xuesong --_000_c5c9947de2ec463199872610561a1f8ehuaweicom_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable --_000_c5c9947de2ec463199872610561a1f8ehuaweicom_-- From nobody Thu Oct 29 22:53:18 2020 Return-Path: X-Original-To: bier@ietf.org Delivered-To: bier@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id F40033A0A25; Thu, 29 Oct 2020 22:53:16 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: bier@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.21.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: bier@ietf.org Message-ID: <160403719693.5521.15466333281825301682@ietfa.amsl.com> Date: Thu, 29 Oct 2020 22:53:16 -0700 Archived-At: Subject: [Bier] I-D Action: draft-ietf-bier-bgp-ls-bier-ext-08.txt X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Oct 2020 05:53:17 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Bit Indexed Explicit Replication WG of the IETF. Title : BGP Link-State extensions for BIER Authors : Ran Chen Zheng Zhang Vengada Prasad Govindan IJsbrand Wijnands Filename : draft-ietf-bier-bgp-ls-bier-ext-08.txt Pages : 12 Date : 2020-10-29 Abstract: Bit Index Explicit Replication (BIER) is an architecture that provides optimal multicast forwarding through a "BIER domain" without requiring intermediate routers to maintain any multicast related per- flow state. BIER also does not require any explicit tree-building protocol for its operation. A multicast data packet enters a BIER domain at a "Bit-Forwarding Ingress Router" (BFIR), and leaves the BIER domain at one or more "Bit-Forwarding Egress Routers" (BFERs). The BFIR router adds a BIER header to the packet. The BIER header contains a bitstring in which each bit represents exactly one BFER to forward the packet to. The set of BFERs to which the multicast packet needs to be forwarded is expressed by setting the bits that correspond to those routers in the BIER header. BGP Link-State (BGP-LS) enables the collection of various topology information from the network, and the topology informations are used by the controller to calculate the fowarding table and then program them onto the ingress nodes(instead of having each node to calculate on its own) and that can be for both inter-as and intra-as situations. This document specifies extensions to the BGP Link-state address- family in order to advertise BIER informations. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bier-bgp-ls-bier-ext/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bier-bgp-ls-bier-ext-08 https://datatracker.ietf.org/doc/html/draft-ietf-bier-bgp-ls-bier-ext-08 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bier-bgp-ls-bier-ext-08 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Thu Oct 29 22:59:34 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8F48D3A0A2B; Thu, 29 Oct 2020 22:59:32 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.884 X-Spam-Level: X-Spam-Status: No, score=-1.884 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, HTML_NONELEMENT_30_40=0.001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_REMOTE_IMAGE=0.01, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1dFAvIwC_hMZ; Thu, 29 Oct 2020 22:59:28 -0700 (PDT) Received: from mxhk.zte.com.cn (mxhk.zte.com.cn 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<202010211652080465785@zte.com.cn> References: CABNhwV22B-_UhewviC0x_6nco3_otf09ahwUcLS=m_-MfAVd6w@mail.gmail.com, CABNhwV2Cvt30cGqt+rEp1rRum9CTgpmb6jHcSbqMu5vo2oEvsw@mail.gmail.com, 202010211652080465785@zte.com.cn Mime-Version: 1.0 From: To: , , Cc: Content-Type: multipart/mixed; boundary="=====_001_next=====" X-MAIL: mse-fl2.zte.com.cn 09U5xHLC062534 Archived-At: Subject: Re: [Bier] =?utf-8?q?Shepherd=E2=80=99s_review_of_draft-ietf-bier-bg?= =?utf-8?q?p-ls-bier-ext-07?= X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Oct 2020 05:59:33 -0000 --=====_001_next===== Content-Type: multipart/related; boundary="=====_002_next=====" --=====_002_next===== Content-Type: multipart/alternative; boundary="=====_003_next=====" --=====_003_next===== Content-Type: text/plain; charset="UTF-8" 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9taMJKcvdLFND5148sE9mKNJb/94gV46oqo0smeQgYvNWQbM75zU0YFyMLv3Bwp5pupv GM118Ci8s9hAALYXuJUliQiQjOYvjOA+smGkyn3cXTXx+U2CnQiZHoh3nJwoF2QCtzQX iuR83MDz37GkuxzXBClAxoKOhJS5Z+B2v+TPliWnywx2x9URwZx+GCyIzqupQXf2AoW6 tx6w== X-Gm-Message-State: AOAM531JYQ8XkgtIxIm/LgfsKWdsebSOBxwucELhpQFgM9bUMgPhicAl voiLPAR9bo0GzUpkg0vuT8n7m1FYJs9765Jqx5M= X-Google-Smtp-Source: ABdhPJxQidc5tEWuGdqtHa9Xl0r0RrAWhm3ujWVXqxl6faa4JnYjA0MesK9ty6dXttn/lLPdMvVolXPAiWw4wbp9zR0= X-Received: by 2002:a67:ef5d:: with SMTP id k29mr8192745vsr.33.1604076644257; Fri, 30 Oct 2020 09:50:44 -0700 (PDT) MIME-Version: 1.0 References: <202010211652080465785@zte.com.cn> <202010301359177088227@zte.com.cn> In-Reply-To: <202010301359177088227@zte.com.cn> From: Gyan Mishra Date: Fri, 30 Oct 2020 12:50:33 -0400 Message-ID: To: chen.ran@zte.com.cn Cc: bier@ietf.org, bier-chairs@ietf.org, draft-ietf-bier-bgp-ls-bier-ext@ietf.org Content-Type: multipart/alternative; boundary="00000000000092d14c05b2e6320d" Archived-At: Subject: Re: [Bier] =?utf-8?q?Shepherd=E2=80=99s_review_of_draft-ietf-bier-bg?= =?utf-8?q?p-ls-bier-ext-07?= X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Oct 2020 16:50:50 -0000 --00000000000092d14c05b2e6320d Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Ran I reviewed the update and it looks perfect. Thank you Gyan On Fri, Oct 30, 2020 at 1:59 AM wrote: > Hi Gyan=EF=BC=8C Chairs and WG, > > We have updated the draft based on the Gyran's comments.The link is > > https://datatracker.ietf.org/doc/draft-ietf-bier-bgp-ls-bier-ext/. Please > check it and see if it is OK. > > Any comments are welcome. > > > Best Regards. > > Ran > > > =E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6 > *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A*=E9=99=88=E7=84=B600080434 > *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A*hayabusagsm@gmail.com; > *=E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9A*bier@ietf.org;draft-ietf-bier-bgp-l= s-bier-ext@ietf.org; > bier-chairs@ietf.org; > *=E6=97=A5 =E6=9C=9F =EF=BC=9A*2020=E5=B9=B410=E6=9C=8821=E6=97=A5 16:52 > *=E4=B8=BB =E9=A2=98 =EF=BC=9A**Re: [Bier] Shepherd=E2=80=99s review of > draft-ietf-bier-bgp-ls-bier-ext-07* > _______________________________________________ > BIER mailing list > BIER@ietf.org > https://www.ietf.org/mailman/listinfo/bier > > Hi Gyan, > > Thank you very much for your valuable comments, we will update it as soon > as possible. > > > Best Regards, > > Ran > > > > *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A*=E5=BC=A0=E5=BE=8100007940 > *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A*hayabusagsm@gmail.com;=E9=99=88=E7= =84=B600080434; > *=E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9A*bier@ietf.org;draft-ietf-bier-bgp-l= s-bier-ext@ietf.org; > bier-chairs@ietf.org; > *=E6=97=A5 =E6=9C=9F =EF=BC=9A*2020=E5=B9=B410=E6=9C=8821=E6=97=A5 10:02 > *=E4=B8=BB =E9=A2=98 =EF=BC=9A**Re: [Bier] Shepherd=E2=80=99s review of > draft-ietf-bier-bgp-ls-bier-ext-07* > _______________________________________________ > BIER mailing list > BIER@ietf.org > https://www.ietf.org/mailman/listinfo/bier > > Hi Gyan, > > Ran will consider your suggestion and make some changes. > > Thank you for your suggestion! > > Thanks, > > Sandy > > > *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A*GyanMishra > *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A*=E5=BC=A0=E5=BE=8100007940; > *=E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9A*bier@ietf.org;bier-chairs@ietf.org; > draft-ietf-bier-bgp-ls-bier-ext@ietf.org; > *=E6=97=A5 =E6=9C=9F =EF=BC=9A*2020=E5=B9=B410=E6=9C=8821=E6=97=A5 00:21 > *=E4=B8=BB =E9=A2=98 =EF=BC=9A**Re: Shepherd=E2=80=99s review of draft-ie= tf-bier-bgp-ls-bier-ext-07* > > Hi Sandy > > Please let me know if you are going to revise the draft and make any > updates from my suggestions, and then I can wait for that update and then > finalize my Shepherd write-up. > > Kind Regards > > Gyan > On Tue, Oct 20, 2020 at 3:13 AM wrote: > >> Hi Gyan, >> >> thank you for your suggestion! >> >> Please find my answer inline with Sandy>. >> >> Thanks, >> >> Sandy >> =E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6 >> *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A*GyanMishra >> *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A*=E5=BC=A0=E5=BE=8100007940; >> *=E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9A*bier@ietf.org;bier-chairs@ietf.org= ; >> draft-ietf-bier-bgp-ls-bier-ext@ietf.org; >> *=E6=97=A5 =E6=9C=9F =EF=BC=9A*2020=E5=B9=B410=E6=9C=8820=E6=97=A5 12:08 >> *=E4=B8=BB =E9=A2=98 =EF=BC=9A**Re: Shepherd=E2=80=99s review of draft-i= etf-bier-bgp-ls-bier-ext-07* >> Hi Sandy >> >> Do you think it would be worthwhile to mention the reasons for collectio= n >> maybe in the introduction. I think it would be helpful such as inter-as >> provisioning or any other reason but I really think that should be state= d. >> I understand that according to RFC 7752 is for collection of IGP topolog= y >> information of active or passive path instantiation for RSVP TE or SR-TE= . >> Here we are not doing any traffic engineering steering although BIER >> behavior is similar to SR source routing. So here you have new BIER >> specific TLV code points being provisioned by taking the RFC 7752 prefix >> attribute TLV to create three new BIER specific TLVs, BIER information, >> BIER MPLS Encapsulation, BIER Ethernet Encapsulation. Since the BIER >> >> specifics have nothing to do with TE attributes prefix TLV you really co= uld >> have chosen of the three, node attribute TLV, link attribute TLV or pref= ix >> attribute TLV. Was their any reason why you chose prefix TLV over the >> other two to populate the bier specifics. I noticed that the BFR prefix >> provisioning to each BFR is not in the any of the three new prefix TLVs >> >> provisioned. >> >> Sandy> As you found, the BFR prefix is sent as BGP prefix, because BIER >> >> info is used as sub-TLV or sub-sub-TLV of IGP protocols, the BGP-LS >> >> advertisement is the same with BIER. The reason can be added in >> introduction, >> >> but may not be many sentences, how to use it is depended on the >> >> network administrator. >> >> All the BGP-LS TLV code points provisioned to date are IGP LSDB related >> topology information to rebuild the RSVP TEDs database or SR topology on= a >> Northbound PCE for active or passive path instantiation or TE or SR-TE >> steered paths. >> >> https://www.iana.org/assignments/bgp-ls-parameters/bgp-ls-parameters.xht= ml >> >> >> >> Can you give an example of an application that requires topology visibil= ity >> that cannot be satisfied natively without having to export the topology = to >> a controller. Is it maybe a ODL or Openflow or other 3rd party controlle= r >> >> use for NMS functions. >> >> Sandy> BGP-LS is used for topology collection, and the existed collectio= n >> >> does not include BIER information, one of the usecase is the controller >> >> decide the BFERs for a specific multicast flow. >> >> If it=E2=80=99s just data that is being gathered as this is BIER specifi= c couldn=E2=80=99t >> you gather via NMS netconf / Yang data model for proactive monitoring of >> the BIER domain. If the controller is not taking action or not doing an= y >> >> provisioning and just passive monitoring then I think NMS functionality = can >> >> be accomplished by other means other than BGP-LS. >> >> Sandy> Yes, you are right. The information can also be got by NMS netcon= f >> >> or YANG data model. They provide different methods for network >> administrator. >> >> Kind Regards >> >> Gyan >> >> On Mon, Oct 19, 2020 at 10:54 PM wrote: >> >> > Hi Gyan, >> > >> > thank you very much for your comments! >> > >> > As co-author of this draft, I'd like to answer your question. >> > >> >> > This BGP-LS extension is used for information collection in a BIER dom= ain >> >> >> -- > > > > *Gyan Mishra* > > *Network Solutions A**rchitect * > > > > *M 301 502-134713101 Columbia Pike > *Silver > Spring, MD > > > > -- *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD --00000000000092d14c05b2e6320d Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Ran=C2=A0

I reviewed the update and it looks perfect.

Thank you=C2=A0

Gyan

On Fri= , Oct 30, 2020 at 1:59 AM <chen.r= an@zte.com.cn> wrote:
<= p style=3D"font-size:14px;font-family:arial">Hi=C2=A0Gyan=EF=BC=8C Chairs and WG,

We have updated the draft based on the Gyran's comments.= The link is=C2=A0= https://datatracker.ietf.org/doc/draft-ietf-bier-bgp-l= s-bier-ext/.=C2=A0Please check it and see if= it is OK.

Any comments are welcome.


Best Regard= s.

Ran


=E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6
=E5=8F=91=E4=BB=B6= =E4=BA=BA=EF=BC=9A=E9=99=88=E7=84=B600080434
=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9Ahayab= usagsm@gmail.com;
=E6=97=A5 =E6=9C=9F =EF=BC=9A2020=E5=B9=B410=E6=9C=8821=E6=97=A5 16:52
=E4=B8= =BB =E9=A2=98 =EF=BC=9ARe: [Bier] Shepherd=E2=80=99s= review of draft-ietf-bier-bgp-ls-bier-ext-07
_______________________________________________
BIER=C2=A0mailin= g=C2=A0list
BIER@ietf= .org
https://www.ietf.org/mailman/listinfo/bier

Hi Gyan,

Thank you very much for your valuable comments, we= will update it as soon as possible.


Best Regar= ds,

Ran



<= /div>
=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A= =E5=BC=A0=E5=BE=8100007940
=E6=94= =B6=E4=BB=B6=E4=BA=BA=EF=BC=9Ahayabusagsm@gmail.com= ;=E9=99=88=E7=84=B6= 00080434;
<= strong>=E6=97=A5 =E6=9C=9F =EF=BC=9A2020=E5=B9=B410=E6=9C=88= 21=E6=97=A5 10:02
=E4=B8=BB =E9=A2=98 =EF=BC=9ARe: [Bier] Shepherd=E2=80=99s review of draft-ietf-bier= -bgp-ls-bier-ext-07
__________________= _____________________________
BIER=C2=A0mailing=C2=A0list
BIER@ietf.org
https://www.ietf= .org/mailman/listinfo/bier

Hi Gyan,

Ran will consider your suggestion and make some changes.

Thank you for your suggestion!

Thanks,

Sandy


=E5=8F=91=E4=BB= =B6=E4=BA=BA=EF=BC=9AGyanMishra
=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A=E5=BC=A0=E5=BE=8100007940;
=E6=97=A5 =E6=9C=9F =EF=BC=9A= 2020=E5=B9=B410=E6=9C=8821=E6=97=A5 00:21
= =E4=B8=BB =E9=A2=98 =EF=BC=9ARe: Shepherd=E2=80=99s = review of draft-ietf-bier-bgp-ls-bier-ext-07

Hi Sandy=C2=A0

Plea= se let me know if you are going to revise the draft and make any updates fr= om my suggestions, and then I can wait for that update and then finalize my= Shepherd write-up.

Kind Regards=C2=A0

=
Gyan
On Tue, Oct 20, 2020 at 3:13 AM <zhang.zheng@zte.com.cn= > wrote:

Hi Gyan,

thank you for your suggestion!

Please find my answer inline with Sandy>.

Thanks,

Sandy

=E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6
=E5=8F= =91=E4=BB=B6=E4=BA=BA=EF=BC=9AGyanMishra
=E6=94= =B6=E4=BB=B6=E4=BA=BA=EF=BC=9A=E5= =BC=A0=E5=BE=8100007940;
=E6=97=A5 =E6=9C=9F = =EF=BC=9A2020=E5=B9=B410=E6=9C=8820=E6=97=A5 12:08
=E4=B8=BB =E9=A2=98 =EF=BC=9ARe: Shepherd=E2=80=99s rev= iew of draft-ietf-bier-bgp-ls-bier-ext-07
Hi=C2=A0= Sandy

Do=C2=A0you=C2=A0think=C2=A0it=C2=A0would=C2=A0be=C2=A0worthwh= ile=C2=A0to=C2=A0mention=C2=A0the=C2=A0reasons=C2=A0for=C2=A0collection
= maybe=C2=A0in=C2=A0the=C2=A0introduction.=C2=A0=C2=A0I=C2=A0think=C2=A0it= =C2=A0would=C2=A0be=C2=A0helpful=C2=A0such=C2=A0as=C2=A0inter-as
provisi= oning=C2=A0or=C2=A0any=C2=A0other=C2=A0reason=C2=A0but=C2=A0I=C2=A0really= =C2=A0think=C2=A0that=C2=A0should=C2=A0be=C2=A0stated.
I=C2=A0understand= =C2=A0that=C2=A0according=C2=A0to=C2=A0RFC=C2=A07752=C2=A0is=C2=A0for=C2=A0= collection=C2=A0of=C2=A0IGP=C2=A0topology
information=C2=A0of=C2=A0activ= e=C2=A0or=C2=A0passive=C2=A0path=C2=A0instantiation=C2=A0for=C2=A0RSVP=C2= =A0TE=C2=A0or=C2=A0SR-TE.
Here=C2=A0we=C2=A0are=C2=A0not=C2=A0doing=C2= =A0any=C2=A0traffic=C2=A0engineering=C2=A0steering=C2=A0although=C2=A0BIER<= br>behavior=C2=A0is=C2=A0similar=C2=A0to=C2=A0SR=C2=A0source=C2=A0routing.= =C2=A0=C2=A0So=C2=A0here=C2=A0you=C2=A0have=C2=A0new=C2=A0BIER
specific= =C2=A0TLV=C2=A0code=C2=A0points=C2=A0being=C2=A0provisioned=C2=A0by=C2=A0ta= king=C2=A0the=C2=A0RFC=C2=A07752=C2=A0prefix
attribute=C2=A0TLV=C2=A0to= =C2=A0create=C2=A0three=C2=A0new=C2=A0BIER=C2=A0specific=C2=A0TLVs,=C2=A0BI= ER=C2=A0information,
BIER=C2=A0MPLS=C2=A0Encapsulation,=C2=A0BIER=C2=A0E= thernet=C2=A0Encapsulation.=C2=A0=C2=A0Since=C2=A0the=C2=A0BIER
specific= s=C2=A0have=C2=A0nothing=C2=A0to=C2=A0do=C2=A0with=C2=A0TE=C2=A0attributes= =C2=A0prefix=C2=A0TLV=C2=A0you=C2=A0really=C2=A0could
have=C2=A0chosen= =C2=A0of=C2=A0the=C2=A0three,=C2=A0node=C2=A0attribute=C2=A0TLV,=C2=A0link= =C2=A0attribute=C2=A0TLV=C2=A0or=C2=A0prefix
attribute=C2=A0TLV.=C2=A0= =C2=A0Was=C2=A0their=C2=A0any=C2=A0reason=C2=A0why=C2=A0you=C2=A0chose=C2= =A0prefix=C2=A0TLV=C2=A0over=C2=A0the
other=C2=A0two=C2=A0to=C2=A0popula= te=C2=A0the=C2=A0bier=C2=A0specifics.=C2=A0=C2=A0I=C2=A0noticed=C2=A0that= =C2=A0the=C2=A0BFR=C2=A0prefix
provisioning=C2=A0to=C2=A0each=C2=A0BFR= =C2=A0is=C2=A0not=C2=A0in=C2=A0the=C2=A0any=C2=A0of=C2=A0the=C2=A0three=C2= =A0new=C2=A0prefix=C2=A0TLVs

provisioned.

Sandy> As you foun= d, the BFR prefix is sent as BGP prefix, because BIER=C2=A0

info is u= sed as sub-TLV or sub-sub-TLV of IGP protocols, the BGP-LS=C2=A0

adve= rtisement is the same with BIER. The reason can be added in introduction,= =C2=A0

but may not be many sentences, how to use it is depended on th= e=C2=A0

network administrator.


All=C2=A0the=C2=A0BGP-LS=C2=A0T= LV=C2=A0code=C2=A0points=C2=A0provisioned=C2=A0to=C2=A0date=C2=A0are=C2=A0I= GP=C2=A0LSDB=C2=A0related
topology=C2=A0information=C2=A0to=C2=A0rebuild= =C2=A0the=C2=A0RSVP=C2=A0TEDs=C2=A0database=C2=A0or=C2=A0SR=C2=A0topology= =C2=A0on=C2=A0a
Northbound=C2=A0PCE=C2=A0for=C2=A0active=C2=A0or=C2=A0pa= ssive=C2=A0path=C2=A0instantiation=C2=A0or=C2=A0TE=C2=A0or=C2=A0SR-TE
st= eered=C2=A0paths.

https://www.iana.org= /assignments/bgp-ls-parameters/bgp-ls-parameters.xhtml


Can= =C2=A0you=C2=A0give=C2=A0an=C2=A0example=C2=A0of=C2=A0an=C2=A0application= =C2=A0that=C2=A0requires=C2=A0topology=C2=A0visibility
that=C2=A0cannot= =C2=A0be=C2=A0satisfied=C2=A0natively=C2=A0without=C2=A0having=C2=A0to=C2= =A0export=C2=A0the=C2=A0topology=C2=A0to
a=C2=A0controller.=C2=A0Is=C2= =A0it=C2=A0maybe=C2=A0a=C2=A0ODL=C2=A0or=C2=A0Openflow=C2=A0or=C2=A0other= =C2=A03rd=C2=A0party=C2=A0controller

use=C2=A0for=C2=A0NMS=C2=A0funct= ions.

Sandy> BGP-LS is used for topology collection, and the exist= ed collection=C2=A0

does not include BIER information, one of the use= case is the controller=C2=A0

decide the BFERs for a specific multicas= t flow.=C2=A0


If=C2=A0it=E2=80=99s=C2=A0just=C2=A0data=C2=A0that=C2= =A0is=C2=A0being=C2=A0gathered=C2=A0as=C2=A0this=C2=A0is=C2=A0BIER=C2=A0spe= cific=C2=A0couldn=E2=80=99t
you=C2=A0gather=C2=A0via=C2=A0NMS=C2=A0netco= nf=C2=A0/=C2=A0Yang=C2=A0data=C2=A0model=C2=A0for=C2=A0proactive=C2=A0monit= oring=C2=A0of
the=C2=A0BIER=C2=A0domain.=C2=A0=C2=A0If=C2=A0the=C2=A0con= troller=C2=A0is=C2=A0not=C2=A0taking=C2=A0action=C2=A0or=C2=A0not=C2=A0doin= g=C2=A0any
provisioning=C2=A0and=C2=A0just=C2=A0passive=C2=A0monitoring= =C2=A0then=C2=A0I=C2=A0think=C2=A0NMS=C2=A0functionality=C2=A0can

be= =C2=A0accomplished=C2=A0by=C2=A0other=C2=A0means=C2=A0other=C2=A0than=C2=A0= BGP-LS.

Sandy> Yes, you are right. The information can also be got= by NMS netconf=C2=A0

or YANG data model. They provide different meth= ods for network administrator.

=

Kind=C2=A0Regards
Gyan

On=C2=A0Mon,=C2=A0Oct=C2=A019,=C2=A02020=C2=A0at=C2=A010:54=C2= =A0PM=C2=A0<= zhang.zheng@zte.com.cn>=C2=A0wrote:

>=C2=A0Hi=C2=A0Gyan,>
>=C2=A0thank=C2=A0you=C2=A0very=C2=A0much=C2=A0for=C2=A0your= =C2=A0comments!
>
>=C2=A0As=C2=A0co-author=C2=A0of=C2=A0this=C2= =A0draft,=C2=A0I'd=C2=A0like=C2=A0to=C2=A0answer=C2=A0your=C2=A0questio= n.
>
>=C2=A0This=C2=A0BGP-LS=C2=A0extension=C2=A0is=C2=A0used= =C2=A0for=C2=A0information=C2=A0collection=C2=A0in=C2=A0a=C2=A0BIER=C2=A0do= main


Dear authors of BIER draft-i= etf-bier-te-arch

 

As the document shepherd, i = am hereby asking each of you to confirm that any and all appropriate IPR di= sclosures required for full conformance with the provisions of BCP 78 and B= CP 79 have already been filed.

 

Currently, there is one disc= losure:

ht= tps://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-ietf-b= ier-te-arch

 

Hint:

"I am not aware of any = IPR against draft-ietf-bier-te-arch that has not already been disclosed to = the IETF" is a perfect answer to the question raised by this email (if= it is true). Please make sure to be aware of any IPR with your name on it.

 

 

Thank you very much

Xuesong

 

--


Gyan Mishra

Network Solutions Architect=C2=A0

M 301 502-1347
13101 Columbia Pike=C2=A0
Silver Spring, MD


--


Gya= n Mishra

Netw= ork Solutions A<= i>rchitect=C2=A0

M 301 502-1347
1= 3101 Columbia Pike=C2=A0
Silver Spring, MD


=
--00000000000092d14c05b2e6320d-- From nobody Fri Oct 30 12:12:14 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C58373A1133; Fri, 30 Oct 2020 12:12:12 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.144 X-Spam-Level: X-Spam-Status: No, score=-2.144 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, NICE_REPLY_A=-0.247, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id N1B8uvSYJA0j; Fri, 30 Oct 2020 12:12:11 -0700 (PDT) Received: from mx03.uni-tuebingen.de (mx03.uni-tuebingen.de [134.2.5.213]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3F4753A1132; Fri, 30 Oct 2020 12:12:09 -0700 (PDT) Received: from [192.168.1.106] (unknown [134.3.242.56]) by mx03.uni-tuebingen.de (Postfix) with ESMTPSA id 406E6169971; Fri, 30 Oct 2020 20:12:06 +0100 (CET) To: "Gengxuesong (Geng Xuesong)" , "draft-ietf-bier-te-arch@ietf.org" Cc: BIER WG , BIER WG Chairs References: From: Michael Menth Autocrypt: addr=menth@uni-tuebingen.de; prefer-encrypt=mutual; keydata= mQENBFEwuvUBCAC0e0350KZ4gcyRT7ia8iJ/yaSopkvA14XFLnu9ooRFsw7FvYThSQa6mJ0a fZuAqxs4/ymD6pbLEjQWhuHcZyVOWHsuIYtHBGLOmmSCvoYURgJ1w1wJCwH2uA2I8xT/cV3e fwJym09f/Tl71gLopIIzaSZo6T9NG3jGF2D9cfzapp8IOq1iSiBq5Ry+Sq3IPHkUkpcg3Zk6 td6MtlvRQUnK9nIffxG0RKMF28PCAYFwzx4Nj7zsjfYgcTAIt/ld7Ptk1olb9B9l8xVTuojK /s8sk6yZn0LgE0wjABxUCVSB9wMSyZac4f3QHSl5//ZnstjaqDCM0lijrHHnBI8pmVyHABEB AAG0Jk1pY2hhZWwgTWVudGggPG1lbnRoQHVuaS10dWViaW5nZW4uZGU+iQE+BBMBAgAoBQJR MLr1AhsjBQkJZgGABgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRDxmVdyt1FYm9hyCACz D7Q8imyW9G++j2N97jF9ybcQJ8eCUeiJ20DFy3gAGR/Ic/RB+Y1fsD/1DY2Ahe82iKphp1Fp UK8qhfz+zDVJgz0CyzESyIztOkc1RyhO5295iRG30ClGYaxHHw7/1EbQ8CKEKIAD2WEHIk6I pZkYlBey1uMQLT4LE+nWwrMdo7BDt74rmUpRyWqDHI4J96i/VWKJGbpky5laRwd5hZeVEWGA Blz3/CL7vZzOHLwZduVTs4upZyc2zJHEqQKuHb0+ixs4xaP5yWpQPvacq5+G6IOSawHyDI5T hkRp48yJV519jOWYc/daT0MLHCHK6bt3AK+CfvmBf/ACSS84ravp Message-ID: <31a4ce2a-395f-74fb-1944-004258cecc85@uni-tuebingen.de> Date: Fri, 30 Oct 2020 20:12:05 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [Bier] IPR disclosure against draft-ietf-bier-te-arch X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Oct 2020 19:12:13 -0000 I am not aware of any IPR against draft-ietf-bier-te-arch that has not already been disclosed to the IETF Regards, Michael Am 28.10.2020 um 10:44 schrieb Gengxuesong (Geng Xuesong): > Dear authors of BIER draft-ietf-bier-te-arch > >   > > As the document shepherd, i am hereby asking each of you to confirm that > any and all appropriate IPR disclosures required for full conformance > with the provisions of BCP 78 and BCP 79 have already been filed. > >   > > Currently, there is one disclosure: > > https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-ietf-bier-te-arch > >   > > Hint: > > "I am not aware of any IPR against draft-ietf-bier-te-arch that has not > already been disclosed to the IETF" is a perfect answer to the question > raised by this email (if it is true). Please make sure to be aware of > any IPR with your name on it. > >   > >   > > Thank you very much > > Xuesong > >   > -- Prof. Dr. habil. Michael Menth University of Tuebingen Faculty of Science Department of Computer Science Chair of Communication Networks Sand 13, 72076 Tuebingen, Germany phone: (+49)-7071/29-70505 fax: (+49)-7071/29-5220 mailto:menth@uni-tuebingen.de http://kn.inf.uni-tuebingen.de From nobody Fri Oct 30 12:15:45 2020 Return-Path: X-Original-To: bier@ietf.org Delivered-To: bier@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id EDAB73A113D; Fri, 30 Oct 2020 12:15:39 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: bier@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.21.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: bier@ietf.org Message-ID: <160408533992.3232.13251457934895611637@ietfa.amsl.com> Date: Fri, 30 Oct 2020 12:15:39 -0700 Archived-At: Subject: [Bier] I-D Action: draft-ietf-bier-te-arch-09.txt X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Oct 2020 19:15:40 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Bit Indexed Explicit Replication WG of the IETF. Title : Tree Engineering for Bit Index Explicit Replication (BIER-TE) Authors : Toerless Eckert Gregory Cauchie Michael Menth Filename : draft-ietf-bier-te-arch-09.txt Pages : 48 Date : 2020-10-30 Abstract: This memo introduces per-packet stateless strict and loose path steered replication and forwarding for Bit Index Explicit Replication packets (RFC8279). This is called BIER Tree Engineering (BIER-TE). BIER-TE can be used as a path steering mechanism in future Traffic Engineering solutions for BIER (BIER-TE). BIER-TE leverages RFC8279 and extends it with a new semantic for bits in the bitstring. BIER-TE can leverage BIER forwarding engines with little or no changes. In BIER, the BitPositions (BP) of the packets bitstring indicate BIER Forwarding Egress Routers (BFER), and hop-by-hop forwarding uses a Routing Underlay such as an IGP. In BIER-TE, BitPositions indicate adjacencies. The BIFT of each BFR are only populated with BPs that are adjacent to the BFR in the BIER- TE topology. The BIER-TE topology can consist of layer 2 or remote (routed) adjacencies. The BFR then replicates and forwards BIER packets to those adjacencies. This results in the aforementioned strict and loose path steering and replications. BIER-TE can co-exist with BIER forwarding in the same domain, for example by using separate BIER sub-domains. In the absence of routed adjacencies, BIER-TE does not require a BIER routing underlay, and can then be operated without requiring an Interior Gateway Routing protocol (IGP). BIER-TE operates without explicit in-network tree-state and carries the multicast distribution tree in the packet header. It can therefore be a good fit to support multicast path steering in Segment Routing (SR) networks. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bier-te-arch/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bier-te-arch-09 https://datatracker.ietf.org/doc/html/draft-ietf-bier-te-arch-09 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bier-te-arch-09 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Fri Oct 30 12:41:18 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id AC3473A12F6 for ; Fri, 30 Oct 2020 12:41:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.649 X-Spam-Level: X-Spam-Status: No, score=-1.649 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=no autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HNG_mjiu7yf1 for ; Fri, 30 Oct 2020 12:41:09 -0700 (PDT) Received: from faui40.informatik.uni-erlangen.de (faui40.informatik.uni-erlangen.de [131.188.34.40]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AA4B13A1290 for ; Fri, 30 Oct 2020 12:41:00 -0700 (PDT) Received: from faui48f.informatik.uni-erlangen.de (faui48f.informatik.uni-erlangen.de [131.188.34.52]) by faui40.informatik.uni-erlangen.de (Postfix) with ESMTP id 9D84B548687 for ; Fri, 30 Oct 2020 20:40:56 +0100 (CET) Received: by faui48f.informatik.uni-erlangen.de (Postfix, from userid 10463) id 954FD440059; Fri, 30 Oct 2020 20:40:56 +0100 (CET) Date: Fri, 30 Oct 2020 20:40:56 +0100 From: Toerless Eckert To: bier@ietf.org Message-ID: <20201030194056.GB59039@faui48f.informatik.uni-erlangen.de> References: <160408533992.3232.13251457934895611637@ietfa.amsl.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <160408533992.3232.13251457934895611637@ietfa.amsl.com> User-Agent: Mutt/1.10.1 (2018-07-13) Archived-At: Subject: Re: [Bier] I-D Action: draft-ietf-bier-te-arch-09.txt X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Oct 2020 19:41:17 -0000 Xuesong found some good textual bugs and lacking explanation wrt. to the difference in dependencies against the routing underlay in BIER/BIER-TE. Fixed in -09 https://tools.ietf.org/tools/rfcdiff/rfcdiff.pyht?url1=https://tools.ietf.org/id/draft-ietf-bier-te-arch-08.txt&url2=https://tools.ietf.org/id/draft-ietf-bier-te-arch-09.txt Don't plan to report on those during 109, unless somebody wants me to, otherwise i hope we'll quickly get the IHR disclosure statements from the co-authors, so she can go forward with her shepherd writeup. Cheers Toerless On Fri, Oct 30, 2020 at 12:15:39PM -0700, internet-drafts@ietf.org wrote: > > A New Internet-Draft is available from the on-line Internet-Drafts directories. > This draft is a work item of the Bit Indexed Explicit Replication WG of the IETF. > > Title : Tree Engineering for Bit Index Explicit Replication (BIER-TE) > Authors : Toerless Eckert > Gregory Cauchie > Michael Menth > Filename : draft-ietf-bier-te-arch-09.txt > Pages : 48 > Date : 2020-10-30 > > Abstract: > This memo introduces per-packet stateless strict and loose path > steered replication and forwarding for Bit Index Explicit Replication > packets (RFC8279). This is called BIER Tree Engineering (BIER-TE). > BIER-TE can be used as a path steering mechanism in future Traffic > Engineering solutions for BIER (BIER-TE). > > BIER-TE leverages RFC8279 and extends it with a new semantic for bits > in the bitstring. BIER-TE can leverage BIER forwarding engines with > little or no changes. > > In BIER, the BitPositions (BP) of the packets bitstring indicate BIER > Forwarding Egress Routers (BFER), and hop-by-hop forwarding uses a > Routing Underlay such as an IGP. > > In BIER-TE, BitPositions indicate adjacencies. The BIFT of each BFR > are only populated with BPs that are adjacent to the BFR in the BIER- > TE topology. The BIER-TE topology can consist of layer 2 or remote > (routed) adjacencies. The BFR then replicates and forwards BIER > packets to those adjacencies. This results in the aforementioned > strict and loose path steering and replications. > > BIER-TE can co-exist with BIER forwarding in the same domain, for > example by using separate BIER sub-domains. In the absence of routed > adjacencies, BIER-TE does not require a BIER routing underlay, and > can then be operated without requiring an Interior Gateway Routing > protocol (IGP). > > BIER-TE operates without explicit in-network tree-state and carries > the multicast distribution tree in the packet header. It can > therefore be a good fit to support multicast path steering in Segment > Routing (SR) networks. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-bier-te-arch/ > > There are also htmlized versions available at: > https://tools.ietf.org/html/draft-ietf-bier-te-arch-09 > https://datatracker.ietf.org/doc/html/draft-ietf-bier-te-arch-09 > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=draft-ietf-bier-te-arch-09 > > > Please note that it may take a couple of minutes from the time of submission > until the htmlized version and diff are available at tools.ietf.org. > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > > _______________________________________________ > BIER mailing list > BIER@ietf.org > https://www.ietf.org/mailman/listinfo/bier -- --- tte@cs.fau.de From nobody Fri Oct 30 12:42:02 2020 Return-Path: X-Original-To: bier@ietfa.amsl.com Delivered-To: bier@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E5D7D3A11B0; Fri, 30 Oct 2020 12:42:00 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.649 X-Spam-Level: X-Spam-Status: No, score=-1.649 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=no autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HGGxqH5t4UY5; Fri, 30 Oct 2020 12:41:59 -0700 (PDT) Received: from faui40.informatik.uni-erlangen.de (faui40.informatik.uni-erlangen.de [131.188.34.40]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 01AD43A1235; Fri, 30 Oct 2020 12:41:33 -0700 (PDT) Received: from faui48f.informatik.uni-erlangen.de (faui48f.informatik.uni-erlangen.de [131.188.34.52]) by faui40.informatik.uni-erlangen.de (Postfix) with ESMTP id F1FB7548054; Fri, 30 Oct 2020 20:41:28 +0100 (CET) Received: by faui48f.informatik.uni-erlangen.de (Postfix, from userid 10463) id F0196440059; Fri, 30 Oct 2020 20:41:28 +0100 (CET) Date: Fri, 30 Oct 2020 20:41:28 +0100 From: Toerless Eckert To: Michael Menth Cc: "Gengxuesong (Geng Xuesong)" , "draft-ietf-bier-te-arch@ietf.org" , BIER WG , BIER WG Chairs Message-ID: <20201030194128.GC59039@faui48f.informatik.uni-erlangen.de> References: <31a4ce2a-395f-74fb-1944-004258cecc85@uni-tuebingen.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <31a4ce2a-395f-74fb-1944-004258cecc85@uni-tuebingen.de> User-Agent: Mutt/1.10.1 (2018-07-13) Archived-At: Subject: Re: [Bier] IPR disclosure against draft-ietf-bier-te-arch X-BeenThere: bier@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\"Bit Indexed Explicit Replication discussion list\"" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Oct 2020 19:42:01 -0000 Thank you! Oh, and myself as well, don't think i've responded officially: I am not aware of any IPR against draft-ietf-bier-te-arch that has not Cheers Toerless On Fri, Oct 30, 2020 at 08:12:05PM +0100, Michael Menth wrote: > I am not aware of any IPR against draft-ietf-bier-te-arch that has not > already been disclosed to the IETF > > Regards, Michael > > Am 28.10.2020 um 10:44 schrieb Gengxuesong (Geng Xuesong): > > Dear authors of BIER draft-ietf-bier-te-arch > > > >   > > > > As the document shepherd, i am hereby asking each of you to confirm that > > any and all appropriate IPR disclosures required for full conformance > > with the provisions of BCP 78 and BCP 79 have already been filed. > > > >   > > > > Currently, there is one disclosure: > > > > https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-ietf-bier-te-arch > > > >   > > > > Hint: > > > > "I am not aware of any IPR against draft-ietf-bier-te-arch that has not > > already been disclosed to the IETF" is a perfect answer to the question > > raised by this email (if it is true). Please make sure to be aware of > > any IPR with your name on it. > > > >   > > > >   > > > > Thank you very much > > > > Xuesong > > > >   > > > > -- > Prof. Dr. habil. Michael Menth > University of Tuebingen > Faculty of Science > Department of Computer Science > Chair of Communication Networks > Sand 13, 72076 Tuebingen, Germany > phone: (+49)-7071/29-70505 > fax: (+49)-7071/29-5220 > mailto:menth@uni-tuebingen.de > http://kn.inf.uni-tuebingen.de -- --- tte@cs.fau.de