Brocade SLX Internet Edge

Adam Rothschild asr at
Sat Nov 3 02:39:42 UTC 2018

I have no horse in this race, however one need only look at the NYIIX
outages list to see how well the Brocade/Extreme SLX platform works on
at-scale service provider networks...

On Thu, Nov 1, 2018 at 2:55 PM Blake Hudson <blake at> wrote:
> Chris Welti wrote on 11/1/2018 10:03 AM:
> > Nicolas Fevrier has a very detailed blog post on how Cisco handles the prefixes on their Broadcom Jericho based NCS 5500 gear.
> >
> >
> > I'm pretty sure the principle is more or less the same for the Jericho based platforms on Arista and Extreme.
> >
> > Best regards,
> > Chris
> I love the nitty gritty detail in this author's post and I'm glad he
> concludes by stating clearly that while the base card (spec sheet says:
> "On-chip tables for 256K IPv4 or 64K IPv6 routes" and "On-chip tables
> for 786K IPv4 host routes, MAC, and labels") can actually hold a full
> BGP table today when configured appropriately, Cisco still recommends
> the scale cards for that application (spec sheet says: "FIB scale up 2M
> IPv4 or 512K IPv6 routes" and "On-chip tables for 786K IPv4 host routes,
> MAC, and labels").
> I do have to wonder about the internal expansion of each /23 route into
> two /24 routes in their FIB algorithm, as I would have thought Cisco
> would have attempted to go the opposite way, but I'm sure Cisco has
> their reasons.

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