From owner-idmr@cs.ucl.ac.uk Tue Oct 2 09:29:14 2001 Received: from pan2.cs.ucl.ac.uk (pan2.cs.ucl.ac.uk [128.16.8.208]) by ietf.org (8.9.1a/8.9.1a) with SMTP id JAA10078 for ; Tue, 2 Oct 2001 09:29:12 -0400 (EDT) Received: from pan2.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk via Local Delivery channel id ; Tue, 2 Oct 2001 13:38:17 +0100 Received: from bells.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk with local SMTP id ; Tue, 2 Oct 2001 10:03:18 +0100 Received: from leonis.nus.edu.sg by bells.cs.ucl.ac.uk with Internet SMTP id ; Tue, 2 Oct 2001 10:03:16 +0100 Received: from cfcir3 (cf-cir3.ddns.comp.nus.edu.sg [137.132.82.206]) by leonis.nus.edu.sg (8.10.0/8.10.0) with SMTP id f9291cE09137; Tue, 2 Oct 2001 17:01:39 +0800 (SST) Message-ID: <01d201c14b20$866f1cb0$21528489@cfcir3> Reply-To: Ding Aijun From: Ding Aijun To: mpls Cc: pim , magma , idmr References: <4.3.2.7.2.20010905091527.01ddd2c8@london.cisco.com> Subject: OXC vendors Date: Tue, 2 Oct 2001 16:59:18 +0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700 Sender: owner-idmr@cs.ucl.ac.uk Precedence: bulk Content-Transfer-Encoding: 7bit Hi, all, Recently, I am doing a survey on OXC & WADM. Now I am in the first step, that is, collect the websites of famous vendors. Besides Nortel, Lucent, and Cisco, can anybody provide the websites of other famous vendors that produce OXC and/or WADM? Thanks in advance! regards, aijun From owner-idmr@cs.ucl.ac.uk Mon Oct 8 15:47:20 2001 Received: from pan2.cs.ucl.ac.uk (pan2.cs.ucl.ac.uk [128.16.8.208]) by ietf.org (8.9.1a/8.9.1a) with SMTP id PAA29813 for ; Mon, 8 Oct 2001 15:47:18 -0400 (EDT) Received: from pan2.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk via Local Delivery channel id ; Mon, 8 Oct 2001 19:56:06 +0100 Received: from bells.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk with local SMTP id ; Mon, 8 Oct 2001 19:53:57 +0100 Received: from emerson.torrentnet.com by bells.cs.ucl.ac.uk with Internet SMTP id ; Mon, 8 Oct 2001 17:51:38 +0100 Received: from imperial.torrentnet.com (imperial.torrentnet.com [198.78.51.109]) by emerson.torrentnet.com (8.11.2/8.11.2) with ESMTP id f98Gpat84427 for ; Mon, 8 Oct 2001 12:51:36 -0400 (EDT) Received: from malibu.torrentnet.com (malibu.torrentnet.com [198.78.51.100]) by imperial.torrentnet.com (8.11.2/8.11.2) with ESMTP id f98Gpaq90534 for ; Mon, 8 Oct 2001 12:51:36 -0400 (EDT) Received: from malibu.torrentnet.com (malibu.torrentnet.com [198.78.51.100]) by malibu.torrentnet.com (8.11.2/8.11.2) with ESMTP id f98GpZY21930 for ; Mon, 8 Oct 2001 12:51:35 -0400 (EDT) Date: Mon, 8 Oct 2001 12:51:35 -0400 (EDT) From: Todd Hayton To: idmr Subject: IGMPv3 older version host present question Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-idmr@cs.ucl.ac.uk Precedence: bulk Hello, I was reading throught the IGMPv3 draft and had some questions regarding the older version host present processing. Specifically the draft states that: "When Group Compatibility Mode is IGMPv2, a router acts in IGMPv2 compatibility mode, using *only* the IGMPv2 protocol for that group. When Group Compatibility Mode is IGMPv1, a router acts in IGMPv1 compatibility mode, using *only* the IGMPv1 protocol for that group." The phrases "using *only* the IGMPv1/v2 protocol for that group" suggest that the router should be ignoring any IGMPv3 messages it hears for a group if that group is in v1/v2 mode. However, if that is the case, then the only time the group timer is going to be set is when a v1 or v2 report is received. This is also when the v1/v2 host present timer is set. Since these values are both set to GMI then the older version host present timer and the group timer are always going to expire at the same time. The remedy for this it seems would be to still receive and process IGMPv3 messages for the group so that the group timer could still be updated without also updating the v1/v2 host present timers. This would allow a router to transition up to v3 mode after all v1/v2 hosts stopped reporting. One side effect of this would be that if all of the v3 hosts stopped reporting and the group filter timer and source timers went down to 0, you wouldn't necessarily delete the group record because there might be v2/v1 hosts still interested in receiving traffic from that group. Todd H From owner-idmr@cs.ucl.ac.uk Mon Oct 15 02:46:25 2001 Received: from pan2.cs.ucl.ac.uk (pan2.cs.ucl.ac.uk [128.16.8.208]) by ietf.org (8.9.1a/8.9.1a) with SMTP id CAA20178 for ; Mon, 15 Oct 2001 02:46:25 -0400 (EDT) Received: from pan2.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk via Local Delivery channel id ; Mon, 15 Oct 2001 06:52:30 +0100 Received: from haig.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk with local SMTP id ; Mon, 15 Oct 2001 06:52:23 +0100 Received: from wiproecmx1.wipro.com by haig.cs.ucl.ac.uk with Internet SMTP id ; Mon, 15 Oct 2001 06:52:11 +0100 Received: from ecvwall11.wipro.com (ecvwall1.wipro.com [164.164.23.6]) by wiproecmx1.wipro.com (8.11.3/8.11.3) with SMTP id f9F5opT07597 for ; Mon, 15 Oct 2001 11:20:51 +0530 (IST) Received: from Vinod ([10.145.2.225]) by arabhi.mail.wipro.com (Netscape Messaging Server 4.15) with ESMTP id GL8G8500.5RJ for ; Mon, 15 Oct 2001 11:20:29 +0530 Message-ID: <003f01c1553e$10cba780$e102910a@wipro.com> From: Vinodkumar Parasmal To: IDMR Subject: Query Regarding Querier Election in IGMPv2 Date: Mon, 15 Oct 2001 11:25:59 +0530 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="------------InterScan_NT_MIME_Boundary" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 Sender: owner-idmr@cs.ucl.ac.uk Precedence: bulk This is a multi-part message in MIME format. --------------InterScan_NT_MIME_Boundary Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi All, I have a basic doubt regarding IGMPv2 Querier Election. Does the Querier Election takes place for both General Queries Received & Group Specific Queries received or is it only when General Queries are received ? Thanks in advance Vinod --------------InterScan_NT_MIME_Boundary Content-Type: text/plain; name="Wipro_Disclaimer.txt" Content-Disposition: attachment; filename="Wipro_Disclaimer.txt" Content-Transfer-Encoding: 7bit ----------------------------------------------------------------------------------------------------------------------- Information transmitted by this E-MAIL is proprietary to Wipro and/or its Customers and is intended for use only by the individual or entity to which it is addressed, and may contain information that is privileged, confidential or exempt from disclosure under applicable law. If you are not the intended recipient or it appears that this mail has been forwarded to you without proper authority, you are notified that any use or dissemination of this information in any manner is strictly prohibited. In such cases, please notify us immediately at mailto:mailadmin@wipro.com and delete this mail from your records. ------------------------------------------------------------------------------------------------------------------------ --------------InterScan_NT_MIME_Boundary-- From owner-idmr@cs.ucl.ac.uk Mon Oct 15 11:27:47 2001 Received: from pan2.cs.ucl.ac.uk (pan2.cs.ucl.ac.uk [128.16.8.208]) by ietf.org (8.9.1a/8.9.1a) with SMTP id LAA02620 for ; Mon, 15 Oct 2001 11:27:46 -0400 (EDT) Received: from pan2.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk via Local Delivery channel id ; Mon, 15 Oct 2001 15:22:06 +0100 Received: from bells.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk with local SMTP id ; Mon, 15 Oct 2001 15:22:00 +0100 Received: from h66s122a103n47.user.nortelnetworks.com by bells.cs.ucl.ac.uk with Internet SMTP id ; Mon, 15 Oct 2001 15:21:46 +0100 Received: from smtprch2.nortel.com (erchg0k.us.nortel.com [47.113.64.104]) by zrc2s03g.us.nortel.com (8.9.3+Sun/8.9.1) with ESMTP id JAA26550 for ; Mon, 15 Oct 2001 09:21:41 -0500 (CDT) Received: from zsc4c000.us.nortel.com by smtprch2.nortel.com; Mon, 15 Oct 2001 09:14:51 -0500 Received: from zbl6c016.corpeast.baynetworks.com ([132.245.205.66]) by zsc4c000.us.nortel.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id TZVH96P8; Mon, 15 Oct 2001 07:21:01 -0700 Received: from nortelnetworks.com (indians.engeast.baynetworks.com [192.32.138.49]) by zbl6c016.corpeast.baynetworks.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id RS9LS628; Mon, 15 Oct 2001 10:21:00 -0400 Message-ID: <3BCAF0E3.2A8344ED@nortelnetworks.com> Date: Mon, 15 Oct 2001 10:21:23 -0400 From: Janet Doong X-Mailer: Mozilla 4.75 [en] (X11; U; SunOS 5.7 sun4u) X-Accept-Language: en MIME-Version: 1.0 To: vinodkumar.paras@wipro.com CC: IDMR Subject: Re: Query Regarding Querier Election in IGMPv2 References: <003f01c1553e$10cba780$e102910a@wipro.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Orig: Sender: owner-idmr@cs.ucl.ac.uk Precedence: bulk Content-Transfer-Encoding: 7bit Both General Queries and Group Specific Queries all use the same IGMP membership query message type. This message type is used by router along with its IP address to identify itself as IGMP Querier on its local net. -Janet vinodkumar.paras@wipro.com wrote: > Hi All, > I have a basic doubt regarding IGMPv2 Querier Election. > Does the Querier Election takes place for both General Queries > Received & Group Specific Queries received or is it only when > General Queries are received ? > > Thanks in advance > Vinod > > ------------------------------------------------------------------------ > Name: Wipro_Disclaimer.txt > Wipro_Disclaimer.txt Type: Plain Text (text/plain) > Encoding: 7bit From owner-idmr@cs.ucl.ac.uk Mon Oct 15 20:29:27 2001 Received: from pan2.cs.ucl.ac.uk (pan2.cs.ucl.ac.uk [128.16.8.208]) by ietf.org (8.9.1a/8.9.1a) with SMTP id UAA16152 for ; Mon, 15 Oct 2001 20:29:27 -0400 (EDT) Received: from pan2.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk via Local Delivery channel id ; Tue, 16 Oct 2001 00:38:16 +0100 Received: from bells.cs.ucl.ac.uk by pan2.cs.ucl.ac.uk with local SMTP id ; Tue, 16 Oct 2001 00:38:11 +0100 Received: from mail-blue.research.att.com by bells.cs.ucl.ac.uk with Internet SMTP id ; Tue, 16 Oct 2001 00:37:58 +0100 Received: from alliance.research.att.com (alliance.research.att.com [135.207.26.26]) by mail-blue.research.att.com (Postfix) with ESMTP id 940904CE12; Mon, 15 Oct 2001 19:37:53 -0400 (EDT) Received: from windsor.research.att.com (windsor.research.att.com [135.207.26.46]) by alliance.research.att.com (8.8.7/8.8.7) with ESMTP id TAA23759; Mon, 15 Oct 2001 19:37:51 -0400 (EDT) From: Bill Fenner Received: (from fenner@localhost) by windsor.research.att.com (8.8.8+Sun/8.8.5) id QAA25493; Mon, 15 Oct 2001 16:37:51 -0700 (PDT) Message-Id: <200110152337.QAA25493@windsor.research.att.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII To: thayton@torrentnet.com Subject: Re: IGMPv3 older version host present question Cc: idmr@cs.ucl.ac.uk Date: Mon, 15 Oct 2001 16:37:51 -0700 Versions: dmail (solaris) 2.2j/makemail 2.9b Sender: owner-idmr@cs.ucl.ac.uk Precedence: bulk Todd, You're right, the old wording didn't effectively convey what was meant. How does this sound instead: When Group Compatibility Mode is IGMPv3, a router acts using the IGMPv3 protocol for that group. When Group Compatibility Mode is IGMPv2, a router acts in IGMPv2 compatibility mode, treating all IGMPv3 messages mentioning a group as membership in that group, except IS_INC( {} ) and TO_INC( {} ), which are treated as IGMPv2 Leave messages. ALLOW() and BLOCK() messages are ignored. When Group Compatibility Mode is IGMPv1, a router acts in IGMPv1 compatibility mode, treating IGMPv3 messages as above but adittionally ignoring IGMPv2 Leave messages. Note that IGMPv3 messages that are treated differently due to the Group Compatibility Mode do not affect the older verison host present timers. Thanks, Bill