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.
Phil -----Original Message----- From: Jeff Tantsura <jeff.tants...@ericsson.com> Date: Tuesday, January 19, 2016 at 11:46 To: Colton Conor <colton.co...@gmail.com>, Phil B <bedard.p...@gmail.com> Cc: NANOG <nanog@nanog.org> Subject: Re: New Switches with Broadcom StrataDNX >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-boun...@nanog.org >on behalf of colton.co...@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.p...@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-boun...@nanog.org> on behalf of Colton Conor < >>> colton.co...@gmail.com> >>> Date: Sunday, January 17, 2016 at 18:15 >>> To: NANOG <nanog@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/ >>>
