On Thu, 19 Aug 1999, Harry McGregor wrote:
> >
> > No, the 7xxx series is a "software" based router (ie, there aren't ASICs
> > doing the routing and switching), but it does (at least on the 75xx's)
> > use distributed processing. Meaning the RSP card (which is the main CPU
> > card) does the processing of routing protcol information, building a
> > routing table, building a forwarding table and all that (processing CLI
> > logins, etc.), but that large parts, or possibly (depending on the
> > configuration) all of the actual route selection and switching of the
> > packets can be offloaded to the Interface Processor cards (VIP cards).
>
> Thanks for the correction. What routers do you know of (under 250K) that
> use custom ASICs?
Juniper M40. Compare the worst-case numbers on Juniper's web site
(http://www.juniper.net/) to the worst-case numbers on a Cisco 12xxx, and
you may be suprised. Of course, you'd have to convince Cisco to give you
the worst-case numbers. Good luck with that :-). The M40 is supposed to
be able to handle 40M packets/second while changing 100k routes per
second. I've heard on good authority that the Cisco 12008 (which is still
using software in most cases, I think) won't come within a factor of 10 of
this under non-ideal circumstances.
Scott
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