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Subject: Re: GR/NSF Terminology
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Date: Tue, 04 Feb 2003 09:57:46 -0500
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Danny, et al,

FWIW, draft-ietf-ospf-hitless-restart-06.txt now uses the term
"graceful restart" rather than "hitless restart". I didn't change
the draft name but once it is published as an RFC all remnants
of "hitless" will be gone.

Danny McPherson wrote:
>>The OSPF document you cite defines various terms, but in an 
>>OSPF-specific fashion.  Furthermore, the definitions are not 
>>collected anywhere in the document but are peppered throughout it... 
>>which is fine in context but doesn't lend itself to generic use of 
>>the terms.
> 
> 
> Agreed.
> 
> 
>>Seems like there are two things we could do:
>>
>>First, leave the documents as they are.  This is my preferred 
>>alternative.  The docs are relatively well advanced in terms of 
>>specification and even deployment, and doing what would be a 
>>non-trivial update solely for the purpose of aligning terminology 
>>strikes me a being work for work's sake.  This is doubly true because 
>>a major terminology change creates the risk of introducing subtle 
>>errors to the spec if one isn't careful.  Apart from aesthetics, what 
>>need do you think is fulfilled by aligning the specs?
>>
>>Alternately, if we do want to go ahead and change the specs, then a 
>>(generic) definitions document such as you have volunteered to write 
>>seems a necessity.  I'm not a fan of "framework" documents and I hope 
>>we could keep the scope of the proposed definitions document focused.
> 
> 
> OK, so folks don't seem to be to keen on the idea at this point.
> Given that I'm not attached to the idea of more work "for the
> sake of work" then I'll drop it.  I believe there is room for 
> commonality but look where that's got me in PWE3 *8^/
> 
>  
> 
>>By the way, I think "graceful restart" has historic precedence over 
>>"hitless restart" if you want to align terms :-). 
> 
> 
> Agreed. 
> 
> -danny
> 
> _______________________________________________
> routing-discussion mailing list
> routing-discussion@ietf.org
> https://www1.ietf.org/mailman/listinfo/routing-discussion
> 


-- 
Acee

_______________________________________________
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https://www1.ietf.org/mailman/listinfo/routing-discussion


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Date: Tue, 04 Feb 2003 09:57:46 -0500
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Danny, et al,

FWIW, draft-ietf-ospf-hitless-restart-06.txt now uses the term
"graceful restart" rather than "hitless restart". I didn't change
the draft name but once it is published as an RFC all remnants
of "hitless" will be gone.

Danny McPherson wrote:
>>The OSPF document you cite defines various terms, but in an 
>>OSPF-specific fashion.  Furthermore, the definitions are not 
>>collected anywhere in the document but are peppered throughout it... 
>>which is fine in context but doesn't lend itself to generic use of 
>>the terms.
> 
> 
> Agreed.
> 
> 
>>Seems like there are two things we could do:
>>
>>First, leave the documents as they are.  This is my preferred 
>>alternative.  The docs are relatively well advanced in terms of 
>>specification and even deployment, and doing what would be a 
>>non-trivial update solely for the purpose of aligning terminology 
>>strikes me a being work for work's sake.  This is doubly true because 
>>a major terminology change creates the risk of introducing subtle 
>>errors to the spec if one isn't careful.  Apart from aesthetics, what 
>>need do you think is fulfilled by aligning the specs?
>>
>>Alternately, if we do want to go ahead and change the specs, then a 
>>(generic) definitions document such as you have volunteered to write 
>>seems a necessity.  I'm not a fan of "framework" documents and I hope 
>>we could keep the scope of the proposed definitions document focused.
> 
> 
> OK, so folks don't seem to be to keen on the idea at this point.
> Given that I'm not attached to the idea of more work "for the
> sake of work" then I'll drop it.  I believe there is room for 
> commonality but look where that's got me in PWE3 *8^/
> 
>  
> 
>>By the way, I think "graceful restart" has historic precedence over 
>>"hitless restart" if you want to align terms :-). 
> 
> 
> Agreed. 
> 
> -danny
> 
> _______________________________________________
> routing-discussion mailing list
> routing-discussion@ietf.org
> https://www1.ietf.org/mailman/listinfo/routing-discussion
> 


-- 
Acee

_______________________________________________
routing-discussion mailing list
routing-discussion@ietf.org
https://www1.ietf.org/mailman/listinfo/routing-discussion



From routing-discussion-admin@ietf.org  Tue Feb 25 01:54:46 2003
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Folks-

 We're going to have an open area meeting in SF.
 If you would like a time slot, please let me
 know, I'll be putting the agenda together.
 
-- 
Alex

_______________________________________________
routing-discussion mailing list
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https://www1.ietf.org/mailman/listinfo/routing-discussion


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Folks-

 We're going to have an open area meeting in SF.
 If you would like a time slot, please let me
 know, I'll be putting the agenda together.
 
-- 
Alex

_______________________________________________
routing-discussion mailing list
routing-discussion@ietf.org
https://www1.ietf.org/mailman/listinfo/routing-discussion



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Alex:

Any time before Thursday noon.

Sue

-----Original Message-----
From: Alex Zinin [mailto:zinin@psg.com]
Sent: Tuesday, February 25, 2003 1:46 AM
To: routing-discussion@ietf.org
Subject: RTG area meeting in SF


Folks-

 We're going to have an open area meeting in SF.
 If you would like a time slot, please let me
 know, I'll be putting the agenda together.
 
-- 
Alex

_______________________________________________
routing-discussion mailing list
routing-discussion@ietf.org
https://www1.ietf.org/mailman/listinfo/routing-discussion
_______________________________________________
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Alex:

Any time before Thursday noon.

Sue

-----Original Message-----
From: Alex Zinin [mailto:zinin@psg.com]
Sent: Tuesday, February 25, 2003 1:46 AM
To: routing-discussion@ietf.org
Subject: RTG area meeting in SF


Folks-

 We're going to have an open area meeting in SF.
 If you would like a time slot, please let me
 know, I'll be putting the agenda together.
 
-- 
Alex

_______________________________________________
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Sue-

 Sorry, I meant if someone wanted a slot for
 a discussion at the meeting. The meeting itself
 has been scheduled for Monday 19:30--22:00.

-- 
Alex

Tuesday, February 25, 2003, 5:47:02 AM, Susan Hares wrote:
> Alex:

> Any time before Thursday noon.

> Sue

> -----Original Message-----
> From: Alex Zinin [mailto:zinin@psg.com]
> Sent: Tuesday, February 25, 2003 1:46 AM
> To: routing-discussion@ietf.org
> Subject: RTG area meeting in SF


> Folks-

>  We're going to have an open area meeting in SF.
>  If you would like a time slot, please let me
>  know, I'll be putting the agenda together.

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Sue-

 Sorry, I meant if someone wanted a slot for
 a discussion at the meeting. The meeting itself
 has been scheduled for Monday 19:30--22:00.

-- 
Alex

Tuesday, February 25, 2003, 5:47:02 AM, Susan Hares wrote:
> Alex:

> Any time before Thursday noon.

> Sue

> -----Original Message-----
> From: Alex Zinin [mailto:zinin@psg.com]
> Sent: Tuesday, February 25, 2003 1:46 AM
> To: routing-discussion@ietf.org
> Subject: RTG area meeting in SF


> Folks-

>  We're going to have an open area meeting in SF.
>  If you would like a time slot, please let me
>  know, I'll be putting the agenda together.

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From: Karthikeyan <karthiks@samsung.com>
Subject: Doubt in OSPF v3 -SPF calculation
To: routing-discussion@ietf.org
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Date: Fri, 28 Feb 2003 11:02:23 +0000 (GMT)
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 =

=3Chtml=3E=3Cnobr=3E=3Cimg src=3Dhttp=3A//maildb=2Esamsung=2Ecom=3A8001/o=
penconfirm=3Fparm=3Dundefined=5F=5Fundefined20030228163610732 width=3D=22=
1=22 height=3D=221=22=3E=3C/nobr=3E
=3Cfont size=3D3 face=3D=22=B1=BC=B8=B2=C3=BC=22=3E =3Cpre=3EHello to all=
=2C

   I have some doubt in OSPF v3 SPF calculation=2E

In section 3=2E8=2E1 while processing multiple router LSA associated with=
 the router
The RFC says that
 =22The Options field and the router type bits (bits W=2C V=2C E and B) s=
hould always =

be taken from =22fragment=22 with the smallest Link State ID=22 =

   This process is done in step 2 of =22calculating shortest path tree fo=
r that area=22
Can anybody explain me why the options field and the router type bits sho=
uld
always be taken from fragment with smallest Link state ID=3F

Thanks in advance=2E
S=2EKarthikeyan=3C/font=3E=3C/pre=3E=3C/html=3E

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From: Karthikeyan <karthiks@samsung.com>
Subject: Doubt in OSPF v3 -SPF calculation
To: routing-discussion@ietf.org
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 =

=3Chtml=3E=3Cnobr=3E=3Cimg src=3Dhttp=3A//maildb=2Esamsung=2Ecom=3A8001/o=
penconfirm=3Fparm=3Dundefined=5F=5Fundefined20030228163610732 width=3D=22=
1=22 height=3D=221=22=3E=3C/nobr=3E
=3Cfont size=3D3 face=3D=22=B1=BC=B8=B2=C3=BC=22=3E =3Cpre=3EHello to all=
=2C

   I have some doubt in OSPF v3 SPF calculation=2E

In section 3=2E8=2E1 while processing multiple router LSA associated with=
 the router
The RFC says that
 =22The Options field and the router type bits (bits W=2C V=2C E and B) s=
hould always =

be taken from =22fragment=22 with the smallest Link State ID=22 =

   This process is done in step 2 of =22calculating shortest path tree fo=
r that area=22
Can anybody explain me why the options field and the router type bits sho=
uld
always be taken from fragment with smallest Link state ID=3F

Thanks in advance=2E
S=2EKarthikeyan=3C/font=3E=3C/pre=3E=3C/html=3E

_______________________________________________
routing-discussion mailing list
routing-discussion@ietf.org
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From routing-discussion-admin@ietf.org  Fri Feb 28 10:24:16 2003
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Karthikeyan wrote:
> 
> 
> Hello to all,
> 
>    I have some doubt in OSPF v3 SPF calculation.
> 
> In section 3.8.1 while processing multiple router LSA associated with the router
> The RFC says that
>  "The Options field and the router type bits (bits W, V, E and B) should always 
> be taken from "fragment" with the smallest Link State ID" 
>    This process is done in step 2 of "calculating shortest path tree for that area"
> Can anybody explain me why the options field and the router type bits should
> always be taken from fragment with smallest Link state ID?

Hello Karthikeyan,

This allows the originating router to only re-originate a single
LSA "fragment" when one of these bits change. Without this rule,
the originating router would have to re-originate all the router
LSA "fragments" for that area.

Thanks,
Acee

> 
> Thanks in advance.
> S.Karthikeyan
> 
> _______________________________________________ routing-discussion 
> mailing list routing-discussion@ietf.org 
> https://www1.ietf.org/mailman/listinfo/routing-discussion


-- 
Acee

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From: Acee Lindem <acee@redback.com>
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To: Karthikeyan <karthiks@samsung.com>
Cc: routing-discussion@ietf.org
Subject: Re: Doubt in OSPF v3 -SPF calculation
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Date: Fri, 28 Feb 2003 10:09:39 -0500
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Karthikeyan wrote:
> 
> 
> Hello to all,
> 
>    I have some doubt in OSPF v3 SPF calculation.
> 
> In section 3.8.1 while processing multiple router LSA associated with the router
> The RFC says that
>  "The Options field and the router type bits (bits W, V, E and B) should always 
> be taken from "fragment" with the smallest Link State ID" 
>    This process is done in step 2 of "calculating shortest path tree for that area"
> Can anybody explain me why the options field and the router type bits should
> always be taken from fragment with smallest Link state ID?

Hello Karthikeyan,

This allows the originating router to only re-originate a single
LSA "fragment" when one of these bits change. Without this rule,
the originating router would have to re-originate all the router
LSA "fragments" for that area.

Thanks,
Acee

> 
> Thanks in advance.
> S.Karthikeyan
> 
> _______________________________________________ routing-discussion 
> mailing list routing-discussion@ietf.org 
> https://www1.ietf.org/mailman/listinfo/routing-discussion


-- 
Acee

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