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Re: [Idr] draft-jiang-idr-ts-flowspec-srv6-policy-07.txt - (8/17/2022 to 8/31/2022

"Dongjie (Jimmy)" <jie.dong@huawei.com> Sun, 28 August 2022 00:54 UTC

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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: draft-jiang-idr-ts-flowspec-srv6-policy-07.txt - (8/17/2022 to 8/31/2022
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Date: Sun, 28 Aug 2022 00:54:20 +0000
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Subject: Re: [Idr] draft-jiang-idr-ts-flowspec-srv6-policy-07.txt - (8/17/2022 to 8/31/2022
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Hi Sue,

I support the adoption of this document. It provides a useful and flexible mechanism for steering traffic to SRv6 Policy.

Please see my replies to the questions below.

Best regards,
Jie

From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Susan Hares
Sent: Wednesday, August 17, 2022 10:59 PM
To: idr@ietf.org
Subject: [Idr] draft-jiang-idr-ts-flowspec-srv6-policy-07.txt - (8/17/2022 to 8/31/2022

This begins a 2 week WG adoption call for draft-jiang-idr-ts-flowspec-srv6-policy-07.txt
https://datatracker.ietf.org/doc/draft-jiang-idr-ts-flowspec-srv6-policy/

During your discussion of this draft, please consider:

1) Do you agree with extending 8955 and 8956 to carry the
action bit [C] found for IPv4 and IPv6 found
draft-ietf-idr-flowspec-redirect-ip-02.txt

[Jie] Yes, I agree with the C bit extension introduced in draft-ietf-idr-flowspec-redirect-ip.


Figure 1 : Local Administrator

0                   1
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|          Reserved           |C|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

C = 0 - redirect original flow
C = 1 - redirect copy of original flow

This bit augments the Redirect to IP action in RFC8955
And RFC8956.

2) Do you agree with this document use of this feature
in addition to  draft-ietf-idr-flowspec-path-redirect
https://datatracker.ietf.org/doc/draft-ietf-idr-flowspec-path-redirect/

[Jie] Yes, I agree. The mechanism proposed in this document fits with the SR Policy architecture and can be considered complementary to the mechanism in draft-ietf-idr-flowspec-path-redirect.


See the following thread for a discussion of this in March:
 https://mailarchive.ietf.org/arch/msg/idr/HENTMEoiMJGmcMuVz7LTYclCSdw/

3) Will this work help deployment of SRv6 networks?

[Jie] Yes, it will be useful to SRv6 networks.


We'll discuss this draft at the IDR interim on 8/29/2022.

Cheerily, Susan Hares

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