[194383] in North American Network Operators' Group
Re: Anyone using Arista 7280R as edge router?
daemon@ATHENA.MIT.EDU (Phil Bedard)
Fri Apr 14 15:44:26 2017
X-Original-To: nanog@nanog.org
Date: Fri, 14 Apr 2017 15:44:19 -0400
From: Phil Bedard <bedard.phil@gmail.com>
To: Tyler Conrad <tyler@tgconrad.com>,
David Hubbard <dhubbard@dino.hostasaurus.com>
In-Reply-To: <CA+2=Zx_9b6uUu6Uo8LPV4KfoEJZz7sfELSFWsaDVewgJ523dAw@mail.gmail.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
There isn=E2=80=99t really anything super special about it if you know about the =
memory space on the Jericho chipset and the LPM/EPM tables. Cisco is doing =
relatively the same things with their 5502 platform, it supports 1M FIB entr=
ies in the base memory model. Most of it banks on the fact the bulk of the=
table is made up of /24 prefixes, and where it doesn=E2=80=99t optimization techn=
iques can be done to make them /24s. =20
Thanks,=20
Phil=20
-----Original Message-----
From: NANOG <nanog-bounces+bedard.phil=3Dgmail.com@nanog.org> on behalf of Ty=
ler Conrad <tyler@tgconrad.com>
Date: Friday, April 14, 2017 at 13:25
To: David Hubbard <dhubbard@dino.hostasaurus.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Subject: Re: Anyone using Arista 7280R as edge router?
I've deployed a 7280SR in that role. Needs the FLX model/license, and a
special TCAM optimization command to install all the routes in hardware=
.
Right now, just pulling a single v4 feed, expanding to a second soon; n=
o v6
yet. Overall, no major issues with it, but Arista seems to be pretty
close-lipped about the secret sauce in Flexroute that lets it scale ove=
r 1M.
=20
On Fri, Apr 14, 2017 at 6:51 AM, David Hubbard <
dhubbard@dino.hostasaurus.com> wrote:
=20
> Hey all, have some Brocade MLXe=E2=80=99s that can no longer handle a full =
v4 and
> v6 route table while also having VRF support (dumb CAM profile limita=
tions
> in the software). Mine don=E2=80=99t do anything fancy; just BGP to a few =
upstream
> peers and OSPF/OSPFv3 to the inside, management VRF, some ACL=E2=80=99s. I=
=E2=80=99m
> looking at the ASR9001 with add-on ports since I need (10) 10gig. Ho=
wever,
> I=E2=80=99ve also been running some Arista 7280SE=E2=80=99s for the past 18 month=
s with no
> issues, and they want me to consider their 7280R since it would give =
me
> more ports, in addition to some higher speed ports, which would be ni=
ce if
> I ever want to upgrade some of our peering to 40 or 100gig.
>
> Arista=E2=80=99s specs say the 7500R / 7280R can handle 1M ipv4+ipv6 routes=
in
> hardware (FIB):
>
> https://www.arista.com/assets/data/pdf/Whitepapers/FlexRoute-WP.pdf
>
> In theory, it would last at least a few years if the v4 table doesn=E2=80=
=99t get
> too crazy between now and then.
>
> Curious if anyone has deployed a 7500R or 7280R in this role and what=
the
> feedback has been?
>
> The 9001=E2=80=99s 4M =E2=80=98credits=E2=80=99 for the combo of v4 +(2)v6 routes obvio=
usly goes
> much further, but I think either one would make it to their expected =
end of
> life, or if not on the Arista side, I=E2=80=99d probably have spent half as=
much.
>
> Thanks,
>
> David
>
=20
