Hi WG,

We think this is useful to extend SRv6 for inter layer network optimization. 
And it can be applied to packet and optical integration. We would like to see 
this work moving forward.

Best regards,
Naihan

 ====================================================

张乃晗/Naihan Zhang
单位:中国联通研究院/ China Unicom Research Instute
地址:北京市海淀区首体南路9号主语商务中心3号楼
邮编:100048
手机:18811575255
Email:zhangn...@chinaunicom.cn

From: 韩柳燕<mailto:hanliu...@chinamobile.com>
Date: 2024-08-22 16:39
To: Alexander Vainshtein<mailto:alexander.vainsht...@rbbn.com>
CC: spring@ietf.org<mailto:spring@ietf.org>; 
draft-dong-spring-sr<mailto:draft-dong-spring-srv6-inter-layer-programm...@ietf.org>;
 Dongjie (Jimmy)<mailto:jie.d...@huawei.com>
Subject: Re:RE: [EXTERNAL] [spring] Re: My question at the 
mikeaboutdraft-dong-spring-srv6-inter-layer-programming
Hi Sasha,



Thank you for the reply.

In the underlay link scenario that our draft focuses on, protocols such as IGP 
or BGP are not running between the two end nodes of the underlay link, and the 
connection between them is an underlying link. We consider that it is different 
from the standard end.X behavior between L3 adjacencies as specified in RFC 
8986. The forwarding behavior has its own particularities, so we think defining 
a new behavior should be better.



Best regards,

Liuyan





----邮件原文----发件人:Alexander Vainshtein  <alexander.vainsht...@rbbn.com>收件人:"韩柳燕" 
<hanliu...@chinamobile.com>抄 送: "spring@ietf.org" 
<spring@ietf.org>,draft-dong-spring-sr 
<draft-dong-spring-srv6-inter-layer-programm...@ietf.org>,"Dongjie (Jimmy)" 
<jie.d...@huawei.com>发送时间:2024-08-21 01:17:43主题:RE: [EXTERNAL] [spring] Re: My 
question at the mikeaboutdraft-dong-spring-srv6-inter-layer-programming

Hi Liyuan,

My apologies for a delayed response.

I have looked up Section 4.2 of RFC 8986 (that defines End.X behavior) and it 
contains the following statement:


When the End.X behavior is associated with a BGP Next-Hop, it is the SRv6 
instantiation of the BGP peering segments [RFC8402].

I.e., End.X behavior can be decoupled from IGP adjacencies.

Hope this helps.


Regards,


Sasha






From: 韩柳燕 <hanliu...@chinamobile.com> Sent: Thursday, August 15, 2024 1:32 PM 
To: draft-dong-spring-sr 
<draft-dong-spring-srv6-inter-layer-programm...@ietf.org> Alexander Vainshtein 
<alexander.vainsht...@rbbn.com> Dongjie (Jimmy) <jie.d...@huawei.com> Cc: 
spring@ietf.org Subject: [EXTERNAL] [spring] Re: My question at the mike 
aboutdraft-dong-spring-srv6-inter-layer-programming






Hi Sasha,





Thanks a lot for your question at the meeting and via the email discussions
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