Hi Mengmeng see inline:
1. This draft describes several protection mechanisms. How to use them in an SR network? [Reply:] In section 4, the deployment schemes of BE and TE scenarios are given respectively. The BE scenario uses TI-LFA local protection, and BFD detects link and neighbor status;The TE scenario uses Policy-hot-standby, BFD detects the policy state, and takes the BE path as the backup of TE. Use VPN-FRR when there are multiple exit PEs 2. I noticed that local protection is also included in Section 3.1 "Path Protection". Why do you classify the protection mechanisms into path protection and egress protection? What is your considerations for this classification? [Reply:] Because SR forwarding paths are divided into TE and BE, local protection can be used in the case of TE loose paths and BE paths. The third section is classified according to the protected objects. Path protection includes local protection and end-to-end path protection. Local protection, which protects the direct link or node failure. End-to-end path protection refers to TE path protection. Egress node protection refers to the failure of the egress node. Therefore, according to different fault locations, it can be divided into path protection and egress protection. Best Regards， changwang From: Mengmeng Li [mailto:[email protected]] Sent: Friday, March 10, 2023 3:32 PM To: Yisong Liu Cc: rtgwg; draft-liu-rtgwg-sr-protection-considerations; liu.yao71; Weiqiang Cheng Subject: Re: FW: New Version Notification for draft-liu-rtgwg-sr-protection-considerations-00.txt Hi Yisong, I went through new version of your draft. From an SP's point of view, the draft provides very valuable considerations on the deployment of SR network. I have two further questions: 1. This draft describes several protection mechanisms. How to use them in an SR network? 2. I noticed that local protection is also included in Section 3.1 "Path Protection". Why do you classify the protection mechanisms into path protection and egress protection? What is your considerations for this classification? Best Regards， Mengmeng Li China Mobile Mobile：+86 15210632045 E-mail: [email protected] 发件人: Yisong Liu<mailto:[email protected]> 时间: 2023/01/13(星期五)09:26 收件人: rtgwg<mailto:[email protected]>; 抄送人: liu.yao71<mailto:[email protected]>;Weiqiang Cheng<mailto:[email protected]>; 主题: FW: New Version Notification for draft-liu-rtgwg-sr-protection-considerations-00.txt Hi All We have posted a new version of the SR protection considerations draft. In this draft both the protection mechanisms of MPLS-SR and SRv6 are included. So, we have replaced the original draft-liu-rtgwg-srv6-protection-considerations with this draft. Main changes are as follows: 1. In section 2, BE/TE paths on MPLS-SR data plane are added. 2. In section 3, descriptions of protection on MPLS-SR data plane are added. 3. Example in section 4.1 is changed to MPLS-SR. If you have any questions and comments with this draft, please don't hesitate to let us know. Best Regards Yisong -----邮件原件----- 发件人: [email protected] <[email protected]> 发送时间: 2023年1月12日 17:34 收件人: Changwang Lin <[email protected]>; Liu Yao <[email protected]>; Weiqiang Cheng <[email protected]>; Xuesong Geng <[email protected]>; Yao Liu <[email protected]>; Yisong Liu <[email protected]> 主题: New Version Notification for draft-liu-rtgwg-sr-protection-considerations-00.txt A new version of I-D, draft-liu-rtgwg-sr-protection-considerations-00.txt has been successfully submitted by Yisong Liu and posted to the IETF repository. Name: draft-liu-rtgwg-sr-protection-considerations Revision: 00 Title: Considerations for Protection of SR Networks Document date: 2023-01-12 Group: Individual Submission Pages: 20 URL: https://www.ietf.org/archive/id/draft-liu-rtgwg-sr-protection-considerations-00.txt Status: https://datatracker.ietf.org/doc/draft-liu-rtgwg-sr-protection-considerations/ Htmlized: https://datatracker.ietf.org/doc/html/draft-liu-rtgwg-sr-protection-considerations Abstract: This document describes the considerations for protection of Segment Routing (SR) networks. The IETF Secretariat _______________________________________________ rtgwg mailing list [email protected] https://www.ietf.org/mailman/listinfo/rtgwg ------------------------------------------------------------------------------------------------------------------------------------- 本邮件及其附件含有新华三集团的保密信息，仅限于发送给上面地址中列出 的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、 或散发）本邮件中的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本 邮件！ This e-mail and its attachments contain confidential information from New H3C, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
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