The IESG has received a request from the BGP Enabled ServiceS WG (bess) to consider the following document: - 'Propagation of ARP/ND Flags in EVPN' <draft-ietf-bess-evpn-na-flags-05.txt> as Proposed Standard
The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the last-c...@ietf.org mailing lists by 2020-08-28. Exceptionally, comments may be sent to i...@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract An EVPN MAC/IP Advertisement route can optionally carry an IPv4 or IPv6 addresses associated with a MAC address. Remote PEs can use this information to populate their ARP/ND tables on IRB interfaces or their proxy-ARP/ND tables in Broadcast Domains (BD). PEs can then reply locally (act as an ARP/ND proxy) to IPv4 ARP requests and IPv6 Neighbor Solicitation messages and reduce/suppress the flooding produced by the Address Resolution procedure. However, the information conveyed in the MAC/IP route may not be enough for the remote PE to reply to local ARP or ND requests. For example, if a PE learns an IPv6->MAC ND entry via EVPN, the PE would not know if that particular IPv6->MAC pair belongs to a host, a router or a host with an anycast address, as this information is not carried in the EVPN MAC/IP Advertisement routes. Similarly, other information relevant to the IP->MAC ARP/ND entries may be needed. This document defines an Extended Community that is advertised along with an EVPN MAC/IP Advertisement route and carries information relevant to the ARP/ND resolution, so that an EVPN PE implementing a proxy-ARP/ND function can reply to ARP Requests or Neighbor Solicitations with the correct information. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-bess-evpn-na-flags/ No IPR declarations have been submitted directly on this I-D. _______________________________________________ BESS mailing list BESS@ietf.org https://www.ietf.org/mailman/listinfo/bess
