Re: Cisco Router best for full BGP on a sub 5K bidget 7500 7200 or other vendor ?

[jlewis () lewis org]

On Mon, 26 Apr 2004, Rodney Dunn wrote:

> That's the most common deployment mistake I
> see made with the 75xx nowadays.  People want
> to move to dCEF to get added feature capability
> or either run a new feature that requires dCEF and they
> don't consider the extra load on the VIP CPU's that
> is required.

Does dCEF use much more CPU on the VIPs or just memory (to store the
fowarwarding table on the VIP)?  My experience has been that a 7500 with
RSP4's and VIP2-50's (with dCEF) will handle much more packet forwarding
than a 7206VXR NPE300...but with full BGP routes, you need at least 64mb
(preferably 128mb) on the VIPs or you can't use dCEF.  Not using dCEF
largely defeats the purpose of using a 7500, doesn't it?

----------------------------------------------------------------------
 Jon Lewis *jlewis () lewis org*|  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
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