New Switches with Broadcom StrataDNX

Tue Jan 19 16:46:39 UTC 2016

Hi,

Some points:
1.DNX SDK is significantly different from SGX, adopted by Cumulus and such, yet to be done, and this is not negligible amount of work
2.if you are not interested in capacity but in scale, there’re other BCM chips, perhaps more suitable
3.you don’t have to have all the forwarding entries populated in silicon, as an example - take a look at http://sdn-internet-router-sir.readthedocs.org, code at https://github.com/dbarrosop/sir, one could also leverage approach we have taken in EVPN - decoupling RIB from FIB completely
4.NG silicon will do 1M+ LPM's

Cheers,
Jeff

On 1/19/16, 06:29, "NANOG on behalf of Colton Conor" <nanog-bounces at nanog.org on behalf of colton.conor at gmail.com> wrote:

>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/
>>