[c-nsp] How many maximum routes does Cisco 2900 router support?

Patrick M. Hausen hausen at punkt.de
Thu Jan 7 03:00:19 EST 2016

Hi, all,

> The 2900 series is a generic CPU-based platform, which means it's not TCAM-based and therefore has no distinct route count limit.
> IOS software, features and their associated data structures, as well as routes all compete for the RAM available. The choice of routing protocol (and associated per-route and/or per-path overhead) will influence the upper limit of the device.
> However, I suspect CPU resources and route convergence time would be more of the limiting factor than absolute route count.

We've been running IPv4 full tables with two 3825 for a couple of years. 1 GB of RAM,
which is AFAIK the maximum this platform supports. Switched them for 6500 just a
little over a year ago.

Just to give you an order of magnitude.

punkt.de GmbH * Kaiserallee 13a * 76133 Karlsruhe
Tel. 0721 9109 0 * Fax 0721 9109 100
info at punkt.de       http://www.punkt.de
Gf: Jürgen Egeling      AG Mannheim 108285

More information about the cisco-nsp mailing list