Two different sessions using two different transport protocols. The v4 BGP session should have address family v6 disabled and vice versa. Exchange v4 routes over a v4 TCP connection, exchange v6 routes over a v6 TCP connection. Just treat them as independent protocols.
-Laszlo On May 2, 2014, at 7:44 PM, Deepak Jain <dee...@ai.net> wrote: > > Between peering routers on a dual-stacked network, is it considered best > practices to have two BGP sessions (one for v4 and one for v6) between them? > Or is it better to put v4 in the v6 session or v6 in the v4 session? > > According to docs, obviously all of these are supported and if both sides are > dual stacked, even the next-hops don't need to be overwritten. > > Is there any community-approach to best practices here? Any FIB weirdness > (e.g. IPv4 routes suddenly start sucking up IPv6 TCAM space, etc) that > results with one solution over the other? > > Thanks in advance, > > DJ
