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Re: [spring] IPv6 Addresses and SIDs

li zhenqiang <li_zhenqiang@hotmail.com> Tue, 15 October 2019 07:47 UTC

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From: li zhenqiang <li_zhenqiang@hotmail.com>
To: Robert Raszuk <robert@raszuk.net>, Gyan Mishra <hayabusagsm@gmail.com>
CC: "Wang, Weibin (NSB - CN/Shanghai)" <weibin.wang@nokia-sbell.com>, Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: Re: [spring] IPv6 Addresses and SIDs
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Date: Tue, 15 Oct 2019 07:47:24 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/XlMZub8daKHlkMQRYgS3DTan5vQ>
Subject: Re: [spring] IPv6 Addresses and SIDs
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Yes, the end destination can handle the IPv6 packet with SRH correctly.
Why do we need PSP or USP? May I know the benefits? Do the behaviors specified for PSP and USP comply with IETF specifications by leaving the outer IPv6 header there and removing the SRH?

Best Regards,
Zhenqiang Li
________________________________
li_zhenqiang@hotmail.com

From: Robert Raszuk<mailto:robert@raszuk.net>
Date: 2019-10-14 22:34
To: Gyan Mishra<mailto:hayabusagsm@gmail.com>
CC: Wang, Weibin \(NSB - CN/Shanghai\)<mailto:weibin.wang@nokia-sbell.com>; Ron Bonica<mailto:rbonica=40juniper.net@dmarc.ietf.org>; SPRING WG List<mailto:spring@ietf.org>
Subject: Re: [spring] IPv6 Addresses and SIDs
Gyan,

 [Gyan]  Spring WG  -??  Because SRv6 uses the same IPv6 data plan as "Business as Usual" NORMAL IPv6 traffic use case of the "internet"  so the an "SRv6 enabled router" that has the code that supports SRv6 has the software feature to perform the PSP & USP but lets say the packet hits a node that does not support SRv6 then the PSP & USP won't occur and all the EH headers inserted for SRv6 routing header type 4 will remain in the packet to the end destination.   How do we deal with this issue.


It's not an issue so we do not need to "deal with it".

SRv6 architecture operates just fine over non upgraded (read non SR aware) IPv6 nodes.

r.

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