[193361] in North American Network Operators' Group
Re: BGP Route Reflector - Route Server, Router, etc
daemon@ATHENA.MIT.EDU (=?utf-8?Q?=C5=81ukasz_Bromirski?=)
Thu Jan 12 17:41:27 2017
X-Original-To: nanog@nanog.org
From: =?utf-8?Q?=C5=81ukasz_Bromirski?= <lukasz@bromirski.net>
In-Reply-To: <3E9C67DA261AC349B60FF3609F5E211D7D80357D@USI-2K10EX02-MT.usicorp.usinternet.com>
Date: Thu, 12 Jan 2017 23:41:20 +0100
To: Justin Krejci <JKrejci@usinternet.com>
Cc: =?utf-8?B?Ik5BTk9HIOKAjltuYW5vZ0BuYW5vZy5vcmdd4oCOIg==?= <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
> On 12 Jan 2017, at 21:32, Justin Krejci <JKrejci@usinternet.com> =
wrote:
>=20
> Nanog,
> [=E2=80=A6]
You did some homework. In essence, there=E2=80=99s no immediate problem =
with running Quagga or OpenBGPd as
RR apart from lack of different knobs and not-so-stellar =
performance/scalability. BIRD is grounds up built
to act as high-performance BGP daemon, and it=E2=80=99s actually used as =
RR in live deployments, not only at IXes.
> I am wondering if people can point me in the direction to some good =
resource material on how to select a good BGP route reflector design. =
Should I just dust off some 7206VXR routers to act as route reflectors? =
Use a few existing live routers and just add the responsibility of being =
route reflectors, is there a performance hit? Install and run BIRD on =
new server hardware? Buy some newer purpose built routers (Cisco, =
Juniper, Brocade, etc) to act as route reflectors and add them to the =
iBGP topology? GNS3 running IOS on server hardware? Something else? How =
many reflectors should be implemented? Two? Four?
Disclaimer: I work at Cisco.
If You have some 7200VXRs that have 1 or 2GBs of RAM, that may be the =
best option (IF you have them).
Loaded with 12.2S/15S software they may actually be the most =
cost-effective solution and at the same
time support things like AddPath, BGP error handling, etc - when time =
comes to use such features.
If that=E2=80=99s a NPE400 based chassis or something even older - leave =
it for lab/etc as You need rather
performant CPU.
So, if that=E2=80=99s not the option, try to work with the BIRD, CSR =
1000v (IOS-XE on VM) or ASR 1001X/HX
(currently, the most scaleable and fastest BGP route reflector out =
there, but one that will cost $$$).
Two RRs provide ample redundancy to run even very large deployments =
(1000+ clients), so unless you=E2=80=99re
trying to hit higher numbers or plan to play fancy games with one pair =
of RRs for IPv4/IPv6 unicast
and other pair for different AFs, four may be an overkill to maintain, =
synchronize and monitor.
Don=E2=80=99t go with GNS3, running compiled at runtime emulation is =
wrong idea for any production deployment,
not to mention rights/licenses to do it.
=E2=80=94=20
=C5=81ukasz Bromirski=
