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RE: Updates to draft-ietf-ccamp-mpls-graceful-shutdown

"Zafar Ali (zali)" <zali@cisco.com> Wed, 29 October 2008 16:39 UTC

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Subject: RE: Updates to draft-ietf-ccamp-mpls-graceful-shutdown
Date: Wed, 29 Oct 2008 12:34:47 -0400
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Thread-Topic: Updates to draft-ietf-ccamp-mpls-graceful-shutdown
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From: "Zafar Ali (zali)" <zali@cisco.com>
To: Lou Berger <lberger@labn.net>
Cc: Adrian Farrel <adrian@olddog.co.uk>, ccamp@ops.ietf.org, mpls@ietf.org, jpv@cisco.com, "Anca Zamfir (ancaz)" <ancaz@cisco.com>, "Newton, Jonathan" <Jonathan.Newton@cw.com>
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Hi Lou-  

> -----Original Message-----
> From: owner-ccamp@ops.ietf.org 
> [mailto:owner-ccamp@ops.ietf.org] On Behalf Of Lou Berger
> Sent: Wednesday, October 29, 2008 11:56 AM
> To: Zafar Ali (zali)
> Cc: Lou Berger; Adrian Farrel; ccamp@ops.ietf.org; 
> mpls@ietf.org; jpv@cisco.com; Anca Zamfir (ancaz); Newton, Jonathan
> Subject: Re: Updates to draft-ietf-ccamp-mpls-graceful-shutdown
> 
> Zafar,
> 
> Why does the document define new error codes (and why 4)?  Is 
> it that the reroute document isn't sufficient clear on how to 
> indicated each of the 4? Is it some other reason?
> 

This is because headend may be able to compute alternate route
("reroute" action) for mb4b differently, depending on the resource under
graceful shutdown, as detailed in the document. Hence one code is define
for TE node, TE link, component link of a bundled TE link, and label
resource, each. 

Thanks

Regards... Zafar 

<snip>

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