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

Stewart Bryant <stbryant@cisco.com> Fri, 08 August 2014 09:54 UTC

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Date: Fri, 08 Aug 2014 10:54:21 +0100
From: Stewart Bryant <stbryant@cisco.com>
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To: Mingui Zhang <zhangmingui@huawei.com>
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> <22D4AECA-2D36-4F79-98CB-96E4B9BDC126@cisco.com> <4552F0907735844E9204A62BBDD325E76AAAB6F9@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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On 08/08/2014 03:46, Mingui Zhang wrote:
> Hi Stewart,
>
> I think authors would say the S-PE stitching method involves the control plane processing during the repair procedure.
Then they would be incorrect.

The update of the PW entry in the FIB of an SPE is identical to the 
operation needed to update the FIB for any other FIB entry when FRR is 
triggered. Now there are more entries to update, but the degree of 
difficult presented will be implementation specific, but then so is the 
availability of context labels.
>   They emphasized their method uses data plane & local repair, which can be faster.
So would an FRR repair in the PW plane.

Stewart

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