Cisco Router best for full BGP on a sub 5K bidget 7500 7200 or other vendor ?
jlewis at lewis.org
jlewis at lewis.org
Mon Apr 26 19:50:45 UTC 2004
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 at lewis.org*| I route
Senior Network Engineer | therefore you are
Atlantic Net |
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