It will also depend on how many routes are in each VRF.
David Rothera On Wed, Jul 13, 2011 at 9:33 AM, Peter Rathlev <[email protected]> wrote: > On Wed, 2011-07-13 at 10:01 +0200, Matteo Castelli ML wrote: > > I am starting a project to implement VRF-lite for some customers, > > does anybody know (or have a link to some Cisco documentation) the > > maximum number of VRF-lite instances in the different ISR G2 routers > > models of Cisco? > > I tried creating a bunch of VRFs on a plain 2801 with 128M RAM running > 12.4(24)T3 Enterprise Base. It's not a G2, but the results should not be > worse. > > It seems that the number of VRFs is only limited by memory. Statistics > for processor memory: > > #VRFs Total(b) Used(b) Free(b) Lowest(b) Largest(b) > 300 55234624 33762740 21471884 21387108 21400832 > 400 55234624 38923612 16311012 16234112 16255268 > 500 55234624 44236524 10998100 10934664 10919836 > 600 55234624 49404172 5830452 5754544 5763496 > 700 55234624 54614228 620396 557736 555396 > > After the 700th VRF the box logged this: > > 005493: Jul 13 10:26:52.299 CEST: %AAA-3-ACCT_LOW_MEM_TRASH: AAA unable > to handle accounting requests due to insufficient processor memory and > could be trashing the queued accounting records > > Keep in mind that this is a lab test, no traffic et cetera. > > My guess is that the raw number of VRFs supported on a G2 would be > something in the ballpark of 1000 or more. I would also guess that the > limiting factor would be forwarding performance before number of VRFs. I > don't have a G2 readily available to test though. > > The VRFs were created as: > > ip vrf test<number> > rd 1:<number> > ! > > -- > Peter > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
