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

MegaZone (megazone@megazone.org)
Tue, 20 Apr 1999 14:25:36 -0700 (PDT)

Once upon a time Brian Horvitz shaped the electrons to say...
>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

It would make no difference - the blade doesn't care where the data is
coming from. A 12 T1 (Actually I think 14 T1s would be better - 2 cards per
T3, if they can pull it off) card would be 3 times the power of a 4 T1 card.

>falling off like 20-30% on packet forwarding speed when it gets loaded.

I haven't seen that with PM-4 users I've talked to.

>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

Routing is handled on each blade. The ethernet is handled by twin MIPS
chips - input and output - more than capable of pushing 100Mb/s. One of
the benefits of distributed processing is NOT needing bigger, faster chips
because you distribute the load to more processors.

-MZ

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