New Switches with Broadcom StrataDNX

Phil Bedard bedard.phil at gmail.com
Tue Jan 19 15:09:04 UTC 2016


It does support a path to use an external TCAM if vendors do that, and will support 1M+ entries.  It will be more expensive and the datapath will be slower which will impact the performance a bit.  

I think you’ll see this make its way into something like a 48x10G/4x100G (or 40G) type platform but we’ll see.  

Phil 

From:  Colton Conor <colton.conor at gmail.com>
Date:  Tuesday, January 19, 2016 at 09:29
To:  Phil B <bedard.phil at gmail.com>
Cc:  NANOG <nanog at nanog.org>
Subject:  Re: New Switches with Broadcom StrataDNX

I was hoping this new Broadcom chip would be able to support enough routes to hold a full BGP table, and be used for something like cumulus linux. I have no need for 100G, but 10G and 40G on a platform with deeper buffers sounds nice.

On Tue, Jan 19, 2016 at 1:01 AM, Phil Bedard <bedard.phil at gmail.com> wrote:
The BCM88670 (Jericho) is what powers the new Cisco NCS55XX devices. The processor is linerate above around 100 bytes per packet without external TCAM, supports 256K IPv4/64K IPv6 FIB entries (or mixed amounts).  These chips are being used for high scale 100G, the initial NCS5508 linecard is a 36x100G QSFP28 one.

Juniper has chosen to use their own silicon for most of their dense 100G platforms, but you’ll see these chips used by pretty much everyone else I imagine at some point in the next year.



Phil

-----Original Message-----
From: NANOG <nanog-bounces at nanog.org> on behalf of Colton Conor <colton.conor at gmail.com>
Date: Sunday, January 17, 2016 at 18:15
To: NANOG <nanog at nanog.org>
Subject: New Switches with Broadcom StrataDNX

>Does anyone know when the switching and router vendors will release their
>new models with the Broadcom BCM88370 and BCM88670 chips? It looks like
>these chips could be used as a carrier grade router and/or metro E device.
>
>More information here: http://www.broadcom.com/press/release.php?id=s902223
>
>and here:
>http://www.nextplatform.com/2015/03/19/new-dune-chips-enable-heftier-switches/






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