[188855] in North American Network Operators' Group
Re: New Switches with Broadcom StrataDNX
daemon@ATHENA.MIT.EDU (Jeff Tantsura)
Mon Apr 18 15:49:29 2016
X-Original-To: nanog@nanog.org
Date: Mon, 18 Apr 2016 12:00:13 -0700
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: Colton Conor <colton.conor@gmail.com>, lincoln dale <ltd@interlink.com.au>
In-Reply-To: <CAMDdSzPvTL=SG_8B_7hVAc9Mb236Ymf1sN_LgRyyxp=49ybhkA@mail.gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
It depends=E2=80=A6
there=E2=80=99s a phenomenon called =E2=80=9Cnext-hop flattening=E2=80=9D which has to do wit=
h lookup recursiveness within the silicon.
Unless this is done (and this is big piece of work) not everything supporte=
d on Trio or Ezchip can be supported.
In general =E2=80=93 Jericho (and its followers) is a great piece of silicon made=
by clueful folks=E2=80=A6 watch this space closely
Jeff
From: Colton Conor <colton.conor@gmail.com>
Date: Monday, April 18, 2016 at 11:44 AM
To: lincoln dale <ltd@interlink.com.au>
Cc: Jeff Tantsura <jeff.tantsura@ericsson.com>, "nanog@nanog.org" <nanog@n=
anog.org>
Subject: Re: New Switches with Broadcom StrataDNX
So can this compete routing wise against something like a Juniper MX104 or =
Cisco ASR 9001?=20
On Mon, Apr 18, 2016 at 1:42 PM, lincoln dale <ltd@interlink.com.au> wrote:
Yes. We also have 1M+ FIB support day one too - hence the letter 'R' denoti=
ng the evolution with 3rd generation of its evolution to internet edge/route=
r use cases.
Not sure what other vendors are doing but I doubt others are yet shipping l=
arge table support.
(there's more to it than just the underlying native silicon)
cheers,
lincoln. (ltd@arista.com)
On Mon, Apr 18, 2016 at 11:01 AM, Colton Conor <colton.conor@gmail.com> wro=
te:
As a follow up to this post, it look like the Arista 7500R series has this
new chip inside of it.
On Wed, Jan 20, 2016 at 9:34 AM, Jeff Tantsura <jeff.tantsura@ericsson.com>
wrote:
> That's right, logic is in programming chips, not their property. You just
> need to know what to program ;-)
>
> Regards,
> Jeff
>
> > On Jan 19, 2016, at 10:10 PM, Mark Tinka <mark.tinka@seacom.mu> wrote:
> >
> >
> >
> >> On 20/Jan/16 00:17, Phil Bedard wrote:
> >>
> >> Good point, there are many people looking at what I call FIB
> optimization right now. The key is having the programmability on the
> device to make it happen. Juniper/Cisco support it using policies to
> filter RIB->FIB and I believe both also do per-NPU/PFE localized FIBs now=
.
> I am not sure if that=E2=80=99s something supported on this new Broadcom chipse=
t.
> Depends on your network of course and where you are looking to position t=
he
> router.
> >
> > I don't think the FIB needs to have specific support for selective
> > programming.
> >
> > I think that comes in the code to instruct the control plane what it
> > should download to the FIB.
> >
> > Cisco's and Juniper's support of this is on FIB that has been in
> > production long before the feature became available. It was just added
> > to code.
> >
> > Mark.
>
