[171502] in North American Network Operators' Group
Re: Best practices IPv4/IPv6 BGP (dual stack)
daemon@ATHENA.MIT.EDU (Eugeniu Patrascu)
Sat May 3 02:02:00 2014
X-Original-To: nanog@nanog.org
In-Reply-To: <7208d8ca20a14690acf8f34a934a68ec@AINET-EX13-S02.ainet.local>
Date: Sat, 3 May 2014 09:01:52 +0300
From: Eugeniu Patrascu <eugen@imacandi.net>
To: Deepak Jain <deepak@ai.net>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Fri, May 2, 2014 at 10:44 PM, Deepak Jain <deepak@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.
>
>
I've done it separately. IPv4 with IPv4, IPv6 with IPv6. From my point of
view it's a cleaner configuration to have things decoupled completely:
management, debugging.
> 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?
>
>
None that I've noticed.
