New Switches with Broadcom StrataDNX

Jeff Tantsura jeff.tantsura at
Mon Apr 18 18:54:24 UTC 2016


Why wouldn’t they?
What is it Arista did others didn’t?


From: lincoln dale <ltd at<mailto:ltd at>>
Date: Monday, April 18, 2016 at 11:42 AM
To: Colton Conor <colton.conor at<mailto:colton.conor at>>
Cc: Jeff Tantsura <jeff.tantsura at<mailto:jeff.tantsura at>>, "nanog at<mailto:nanog at>" <nanog at<mailto:nanog at>>
Subject: Re: New Switches with Broadcom StrataDNX

Yes. We also have 1M+ FIB support day one too - hence the letter 'R' denoting the evolution with 3rd generation of its evolution to internet edge/router use cases.

Not sure what other vendors are doing but I doubt others are yet shipping large table support.
(there's more to it than just the underlying native silicon)


lincoln. (ltd at<mailto:ltd at>)

On Mon, Apr 18, 2016 at 11:01 AM, Colton Conor <colton.conor at<mailto:colton.conor at>> wrote:
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 at<mailto:jeff.tantsura at>>

> 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 at<mailto:mark.tinka at>> 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’s something supported on this new Broadcom chipset.
> Depends on your network of course and where you are looking to position the
> 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.

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