Jorge, Lots of thanks for your email and apologies for my mistake! I have re-checked, and found that withdrawal of the Type 7 and Type 8 routes mentioned in your email have been defined in RFC 9251.
Regards, Sasha From: Jorge Rabadan (Nokia) <[email protected]> Sent: Thursday, July 3, 2025 5:45 PM To: Alexander Vainshtein <[email protected]>; Ali Sajassi (sajassi) <[email protected]>; [email protected]; [email protected]; [email protected]; Wen Lin <[email protected]> Cc: BESS <[email protected]> Subject: [EXTERNAL] Re: A question about withdrawal of EVPN Type 7 and Type 8 routes in RFC 9251 Hi Sasha, As you can imagine, they need to be withdrawn when the local state they advertise is no longer present: https://datatracker.ietf.org/doc/html/draft-sajassi-bess-rfc9251-00#name-local-igmp-mld-membership-r<https://datatracker.ietf.org/doc/html/draft-sajassi-bess-rfc9251-00#name-local-igmp-mld-membership-r> “When a PE, either DF or non-DF, deletes its local IGMP Membership Request (x,G) state for that (ES,BD), it MUST withdraw its BGP IGMP Membership Report Synch route for that (ES,BD).” https://datatracker.ietf.org/doc/html/draft-sajassi-bess-rfc9251-00#section-6.2.2<https://datatracker.ietf.org/doc/html/draft-sajassi-bess-rfc9251-00#section-6.2.2> “When the Maximum Response Time timer expires, a PE that has advertised an IGMP Leave Synch route withdraws it.” Hope it helps. Thanks. Jorge From: Alexander Vainshtein <[email protected]<mailto:[email protected]>> Date: Tuesday, July 1, 2025 at 1:42 AM To: Ali Sajassi (sajassi) <[email protected]<mailto:[email protected]>>, [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>>, [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>>, [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>>, Wen Lin <[email protected]<mailto:[email protected]>> Cc: BESS <[email protected]<mailto:[email protected]>> Subject: [bess] A question about withdrawal of EVPN Type 7 and Type 8 routes in RFC 9251 CAUTION: This is an external email. Please be very careful when clicking links or opening attachments. See the URL nok.it/ext for additional information. Hi all, RFC 9251 defines the rules for advertisement of Type 7 and Type 8 routes, and their processing. However, I have not found any mention in the RFC of the conditions when these routes are withdrawn by the originating PE. Does this ever happen? If not, are these routes supposed to stay forever in the BGP In-RIB and Local RIB of the receiving PEs? 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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