Hi, I have a question about usage of End.DX2 SID (as defined in Section 4.9 of RFC 8986<https://datatracker.ietf.org/doc/html/rfc8986#section-4.9>in EVPN-VPWS.
* The definition of this endpoint behavior says that "The End.DX2 SID MUST be the last segment in an SR Policy, and it is associated with one outgoing interface I" * If the upper-layer header type is Ethernet, the IPv6 header and all extension headers are stripped, and the resulting Ethernet frame is forwarded to the outgoing interface I. EVPN-VPWS as defined in RFC 8214 is explicitly mentioned as one of possible applications in this section, and Section 6.1.2 of RFC 9252<https://datatracker.ietf.org/doc/html/rfc9252#section-6.1.2> explicitly mentions End.DX2 as one of possible behaviors of the SID signaled in per-EVI Ethernet A-D routes (along with End.X2V and End.DT2U). I think that End.X2 behavior as defined above is not compatible with one of the advantageous features of EVPN-VPWS as described in the last para of Section 5 of RFC 8214<https://datatracker.ietf.org/doc/html/rfc8214#section-5>: <quote> Finally, EVPN may employ data-plane egress link protection mechanisms not available in VPWS. This can be done by the primary PE (on local AC down) using the label advertised in the per-EVI Ethernet A-D route by the backup PE to encapsulate the traffic and direct it to the backup PE. <end quote> (For the reference, implementing fast egress protection against AC failure in "classic" VPWS has been defined in RFC 8104). What, if anything, did I miss? Do you think that a new Endpoint behavior should be defined? Regards, and lots of thanks in advance, Sasha Disclaimer This e-mail together with any attachments may contain information of Ribbon Communications Inc. and its Affiliates that is confidential and/or proprietary for the sole use of the intended recipient. Any review, disclosure, reliance or distribution by others or forwarding without express permission is strictly prohibited. If you are not the intended recipient, please notify the sender immediately and then delete all copies, including any attachments.
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