RE: (PM) US West using PM4's (fwd)

Brian Horvitz (horvitz@shore.net)
Tue, 20 Apr 1999 09:38:02 -0400 (EDT)

> The AS5800 can handle 2 T3s, and Cisco reps told me it won't scale past
> that. It is also much larger than the PM-4 so the rack density isn't really
> better. The PM-4 can do 1 T3 today, the next phase is supposed to be
> 3T3s. And the only limitation is the modems, you could do 2, maybe 3, T3s
> *per slot* based on backplane capacity.

I would be a bit worried about putting 3 T3s through the PM4. The
backplane is there but, they had better beef up the processing power of
the modem blades and the management unit. I've heard tell of the unit
falling off like 20-30% on packet forwarding speed when it gets loaded.
I've got 16 T1s in mine and haven't noticed any serious loss but, I could
see another 12 T1s pushing it too far. That poor little 486 ain't gonna
cut it. Of course this is second hand info. I don't have the facilities
to truely do that kind of test myself.

Brian

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