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Re: [PWE3] [mpls] WG Last Call for draft-ietf-pwe3-endpoint-fast-protection-01 - RFC4447

"Stewart Bryant (stbryant)" <stbryant@cisco.com> Thu, 07 August 2014 07:27 UTC

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From: "Stewart Bryant (stbryant)" <stbryant@cisco.com>
To: Mingui Zhang <zhangmingui@huawei.com>
Thread-Topic: [PWE3] [mpls] WG Last Call for draft-ietf-pwe3-endpoint-fast-protection-01 - RFC4447
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Date: Thu, 07 Aug 2014 07:26:56 +0000
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References: Your message of Tue, 05 Aug 2014 13:59:49 -0000. <9696d0db139d46ffaad7be11340215e8@AM3PR03MB612.eurprd03.prod.outlook.com> <16167.1407340459@erosen-lnx>, <4552F0907735844E9204A62BBDD325E76AAAA7F4@nkgeml512-mbx.china.huawei.com>
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Cc: "mpls@ietf.org" <mpls@ietf.org>, "Eric Rosen (erosen)" <erosen@cisco.com>, pwe3 <pwe3@ietf.org>, "pwe3-chairs@tools.ietf.org" <pwe3-chairs@tools.ietf.org>
Subject: Re: [PWE3] [mpls] WG Last Call for draft-ietf-pwe3-endpoint-fast-protection-01 - RFC4447
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Sent from my iPad

> On 7 Aug 2014, at 04:57, "Mingui Zhang" <zhangmingui@huawei.com> wrote:
> 
> Hi Eric, 
> 
> The explanation of the story is very clear. Let me complement a bit.
> 
>> - A "primary egress PE" partitions its set of PWs into n sets, where each
>> set is associated with a given "protector".  The "protector" is the backup
>> egress PE for those PWs.
> 
> When the backup PE acts as the protector, it is the 'co-located' model. 

This case does not however need context labels. It is a form of S-PE and can stitch the PWs just like every existing S-PE already does.

Stewart

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