A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the BGP Enabled ServiceS WG of the IETF.
Title : Propagation of ARP/ND Flags in EVPN
Authors : Jorge Rabadan
Senthil Sathappan
Kiran Nagaraj
Wen Lin
Filename : draft-ietf-bess-evpn-na-flags-05.txt
Pages : 10
Date : 2020-07-27
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 IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-bess-evpn-na-flags/
There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-bess-evpn-na-flags-05
https://datatracker.ietf.org/doc/html/draft-ietf-bess-evpn-na-flags-05
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-bess-evpn-na-flags-05
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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