External BGP Controller for L3 Switch BGP routing

Faisal Imtiaz faisal at snappytelecom.net
Fri Jan 20 01:27:59 UTC 2017

Thank you for all the on-list and off-list replies.. 

The project I was looking for was/is called SIR.. (SDN Internet Router) and the original presentation was done by David Barroso..

Thanks to everyone who responded !


Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232

Help-desk: (305)663-5518 Option 2 or Email: Support at Snappytelecom.net

----- Original Message -----
> From: "Tore Anderson" <tore at fud.no>
> To: "Saku Ytti" <saku at ytti.fi>
> Cc: "nanog list" <nanog at nanog.org>
> Sent: Monday, January 16, 2017 1:40:47 AM
> Subject: Re: External BGP Controller for L3 Switch BGP routing

> Hi Saku,
>> > https://www.redpill-linpro.com/sysadvent/2016/12/09/slimming-routing-table.html
>> ---
>> As described in a prevous post, we’re testing a HPE Altoline 6920 in
>> our lab. The Altoline 6920 is, like other switches based on the
>> Broadcom Trident II chipset, able to handle up to 720 Gbps of
>> throughput, packing 48x10GbE + 6x40GbE ports in a compact 1RU chassis.
>> Its price is in all likelihood a single-digit percentage of the price
>> of a traditional Internet router with a comparable throughput rating.
>> ---
>> This makes it sound like small-FIB router is single-digit percentage
>> cost of full-FIB.
> Do you know of any traditional «Internet scale» router that can do ~720
> Gbps of throughput for less than 10x the price of a Trident II box? Or
> even <100kUSD? (Disregarding any volume discounts.)
>> Also having Trident in Internet facing interface may be suspect,
>> especially if you need to go from fast interface to slow or busy
>> interface, due to very minor packet buffers. This obviously won't be
>> much of a problem in inside-DC traffic.
> Quite the opposite, changing between different interface speeds happens
> very commonly inside the data centre (and most of the time it's done by
> shallow-buffered switches using Trident II or similar chips).
> One ubiquitous configuration has the servers and any external uplinks
> attached with 10GE to leaf switches which in turn connects to a 40GE
> spine layer with. In this config server<->server and server<->Internet
> packets will need to change speed twice:
> [server]-10GE-(leafX)-40GE-(spine)-40GE-(leafY)-10GE-[server/internet]
> I suppose you could for example use a couple of MX240s or something as
> a special-purpose leaf layer for external connectivity.
> MPC5E-40G10G-IRB or something towards the 40GE spines and any regular
> 10GE MPC towards the exits. That way you'd only have one
> shallow-buffered speed conversion remaining. But I'm very sceptical if
> something like this makes sense after taking the cost/benefit ratio
> into account.
> Tore

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