The following errata report has been submitted for RFC9721, "Extended Mobility Procedures for Ethernet VPN Integrated Routing and Bridging (EVPN-IRB)"
-------------------------------------- You may review the report below and at: https://errata.rfc-editor.org/eid9002/ -------------------------------------- Type: Technical Reported by: Anand Narayanan <[email protected]> Section Abstract says: Original Text ------------- The extensions are backward compatible with existing EVPN-IRB implementations and aim to optimize network performance in scenarios involving frequent IP address mobility. Corrected Text -------------- The extensions while backwards incompatible, allow EVPN-IRB implementations to deterministically handle scenarios involving frequent IP address mobility Notes ----- The mobility procedures defined in RFC9721 does not seem backwards compatible with the procedures defined in RFC7432. Example: Premise: 1. An RFC7432 speaker has MAC Mx with sequence number = 1 2. An RFC9721 speaker has MAC My with sequence number = 2 Sequence of Events: 1. The RFC9721 speaker learns a local ARP for IPx-My, and advertised MAC-IP route with sequence number 2 2. IPx moves to be behind RFC7432 speaker 3. RFC7432 speaker would simply advertise IPx-Mx with sequence number 1 4. When RFC9721 speaker receives the MAC-IP route advertised by RFC7432 for IPx-Mx, it will be unable to remove it's local ARP binding because the remote route has an inferior sequence number. This makes the schemes not compatible with each other. Instructions: ------------- This erratum is currently posted as "Reported". Please use "Reply All" to discuss whether it should be verified or rejected. When a decision is reached, the verifying party will log in to change the status and edit the report, if necessary. -------------------------------------- RFC9721 (draft-ietf-bess-evpn-irb-extended-mobility) -------------------------------------- Title : Extended Mobility Procedures for Ethernet VPN Integrated Routing and Bridging (EVPN-IRB) Publication Date : April 2025 Author(s) : N. Malhotra, Ed., A. Sajassi, A. Pattekar, J. Rabadan, A. Lingala, J. Drake Category : Proposed Standard Source : bess (rtg) Stream : IETF Verifying Party : IESG _______________________________________________ BESS mailing list -- [email protected] To unsubscribe send an email to [email protected]
