[c-nsp] 7513 T3 Card Question

[Pete Templin]

David Coulson wrote:

> Is there any compelling reason to use a VIP4 based card with DS-3? 99% 
> of the time you're not pushing full tables (or even tables at all) with 
> T1 customers.

ECC memory.  That should be enough said right there.  We sunk 2xCT3 on 
Saturday when a VIP2-50 wedged itself.

64MB packet memory, instead of 8MB.  When you've got a 64:1 speed 
differential (we use FastE uplinks), TCP can get a little wild before it 
adjusts to link capacity.  Accommodating that for 112 T1s can be risky 
on 8MB of packet memory.

Someone will inevitably ask for full tables.  Murphy knows us too well.

pt