Re: [nsp] MSFC2 128,000 route limitation

From: sthaug@nethelp.no
Date: Wed May 15 2002 - 08:07:38 EDT


> This documentation is incorrect and we will get it fixed / clarified.
>
> The TCAM that holds the FIB table is capable of holding 256,000 entries.
> Without unicast RPF checking turned on the maximum number of unicast
> entries that can be held in the hardware FIB table is 244,000. The
> remaining 12,000 entries are reserved for multicast routes. If unicast RPF
> checking is enabled then the number of routes that are held in the TCAM is
> halved.

Related question: Does the 10720 have a hardware TCAM, and if so, what
is the capacity? (Ie. are we likely to hit a hard limit running BGP with
full routing tables on the 10720 anytime soon?)

Steinar Haug, Nethelp consulting, sthaug@nethelp.no



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