[c-nsp] 7513 T3 Card Question

[David Coulson]

David Barak wrote:
> The frustrating thing is that the 7206 is
> substantially less dense than the 7513: the 7206 can
> support a maximum of 6 PA-MC-2T3+ cards in 3RU, while
> the 7513 can support 18 PA-MC-2T3+ cards in 6RU
> (assuming that 2xGE uplinks are acceptable in either
> case).

Actually, I was chewing this over on my way home. A 7206 is 3U, where as 
a 7513 is 19U. So, we can fit approx 6 7206s in the same space as a 
7513. A single 7513 can support 36 DS-3s (13 Slots - 2 RSP slots - 2 Gig 
line cards = 9 VIPs x 2 PA-MC-2T3 = 36), where as a single 7206 can 
support 12. So, in the same space as a 7513 you could have 7206s 
handling 72 DS-3s, rather than 36.

So, a 7206 is considerable more dense than a 7513. That said, 6 7206s 
with NPE-G1s are far more expensive than a 7513 with something that will 
do Gigabit. That said, then you have to eat far more gigabit switch 
ports, plus you have increased management - Power utilization is pretty 
much the same (280Wx6 vs 1400W).

On the other hand, one of the big reasons we started using 7513 rather 
than 7206 was the availability of redundant processors.