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

Mon Apr 26 20:57:03 UTC 2004

In an effort to keep from getting too vendor specific
on nanog I'll respond to you offline.

My initial response to Alex was aimed at giving him
something else to consider from a "gotcha" perspective along
with his other requirements.

Rodney

On Mon, Apr 26, 2004 at 03:50:45PM -0400, jlewis at lewis.org wrote:
> 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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