Re: [spring] draft-hu-spring-segment-routing-proxy-forwarding-10

Huaimo Chen <huaimo.chen@futurewei.com> Sun, 02 August 2020 04:11 UTC

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From: Huaimo Chen <huaimo.chen@futurewei.com>
To: Peter Psenak <ppsenak@cisco.com>
CC: "spring@ietf.org" <spring@ietf.org>, Bruno Decraene <bruno.decraene@orange.com>
Thread-Topic: draft-hu-spring-segment-routing-proxy-forwarding-10
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Date: Sun, 2 Aug 2020 04:11:25 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/qpqvXK1wiiK2gfayVLzHjYt5314>
Subject: Re: [spring] draft-hu-spring-segment-routing-proxy-forwarding-10
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Hi Peter,

    Thank you very much for your valuable comment in IETF 104.

[peter psenak] no problem with node protection -- but I don’t consider that pretending a SID that has gone is a good idea. There can be second failures. If you need this kind of protection then we should precompute disjoint path.

    You are right. A backup disjoint path should be pre-computed.   For protecting a node, the proxy forwarding pre-computes a backup disjoint path assuming that the node is down. This seems similar to other local protections such as TILFA and LFA.

Best Regards,
Huaimo on behalf of co-authors
________________________________
From: spring <spring-bounces@ietf.org> on behalf of Huaimo Chen <huaimo.chen@futurewei.com>
Sent: Saturday, August 1, 2020 11:45 PM
To: Bruno Decraene <bruno.decraene@orange.com>
Cc: spring@ietf.org <spring@ietf.org>
Subject: [spring] draft-hu-spring-segment-routing-proxy-forwarding-10

Hi Bruno,

    Thank you very much for your valuable comments in IETF 104.


[Bruno] Clarify in the draft -- nhop will not disappear. IP prefix may be used by BGP.

[H] …

[Bruno] Follow up on the list.

    We have clarified it in the draft uploaded.

Best Regards,
Huaimo