[11119] in North American Network Operators' Group
RE: is there a market for this?
daemon@ATHENA.MIT.EDU (Dorian R. Kim)
Mon Jul 21 21:05:29 1997
Date: Mon, 21 Jul 1997 21:00:09 -0400 (EDT)
From: "Dorian R. Kim" <dorian@blackrose.org>
To: Jacques Vidrine <nectar@staff.communique.net>
cc: nanog@merit.edu
In-Reply-To: <A03CD00C69B1D01195AB00A024ECEB16234414@kaori.communique.net>
On Mon, 21 Jul 1997, Jacques Vidrine wrote:
> FWIW, I can't confirm this at this second, but I believe that at least
> the cisco 7200 series routers have a three PCI bus backplane. And it is
> claimed to support an OC-3c VIP2 port adapter, although I haven't put
> mine in action to try yet (and when I do I won't be running anywhere
> near 155 Mbps anyway). A single VIP2 port adapter can only connect to
> one of the three buses, so presumably cisco believes that PCI is up to
> the task. I don't know what the clockrate is, and I don't know if it
> is 32-bit or 64-bit.
I'm pretty sure the 7200's bridged 3 PCI buses are the fast PCI bus, clocking
at 533 MBps, but just because they come out with an interface for a box
doesn't meant that that box can realistically support it. It's not unheard of
for vendors to come out with a box that you can over subscribe. 7200's max
throughput is about 3-4 DS3s..
Also, 7200s don't have VIP2s. 7200 is basically a VIP2 in a chassis.
-dorian
