Hi Loa, Thanks for your question.
O-bit "move" from SRH draft to this SRv6 OAM draft is part of a comment received an agreement made during the LC of the SRH draft. Please review the mail chain https://www.ietf.org/mail-archive/web/ipv6/current/msg30131.html. There was never a suggestion or agreement to "remove" O-bit or SRH.Flags field. Load balancing and ECMP in an SRv6 network are explained in https://tools.ietf.org/html/draft-ietf-6man-segment-routing-header-13#section-4.4. An implementation is expected to use the minimum of (source, dest) address and flow label in the outer IPv6 header to compute the hash. RFC6437 describes the use of flow labels to compute a hash for IPv6 packets. Thanks Regards … Zafar From: Loa Andersson <[email protected]> Date: Tuesday, May 29, 2018 at 9:48 AM To: Huzhibo <[email protected]>, "Zafar Ali (zali)" <[email protected]>, "[email protected]" <[email protected]>, "[email protected]" <[email protected]> Cc: Lizhenbin <[email protected]>, Yangang <[email protected]> Subject: Re: [spring] About draft-ali-spring-srv6-oam-00 Folks, I thought we had an agreement to remove the O-bit. As ZhiBo Hu points out other drafts drops it. The obvious reason to not use an O-bit is that if it ever is part of what an multipath functions hash on it will csue OAM traffic and "normal" traffic to use different paths. This defeats the idea with OAM traffic. /Loa On 2018-05-16 06:56, Huzhibo wrote: Hi, draft-ali-spring-srv6-oam-00 says The OAM packets are identified by setting the O-bit in SRH，But I Notice the latest I-D.6man-segment-routing-headerhas removed O-bit in the SRH extension header. I want to confirm that draft-ali-spring-srv6-oam-00 will also remove o-bit or keep the o-bit in the later version? Ths ZhiBo Hu _______________________________________________ spring mailing list [email protected]<mailto:[email protected]> https://www.ietf.org/mailman/listinfo/spring -- Loa Andersson email: [email protected]<mailto:[email protected]> Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64
_______________________________________________ spring mailing list [email protected] https://www.ietf.org/mailman/listinfo/spring
