[c-nsp] OC12 in a 7500

[Alex Rubenstein]

You won't see anywhere near 622 mb/s on the 7507, unless it has only two 
routes in the FIB, no features, and all 1500 or 4470 MTU packets.

Real world, expect about 300 mb/s, at best, across a OC12. And, yes, the 
SRP card will talk to a telco OC12, but there needs to be a box (or boxes) 
speaking SRP on the other end.

I can't recall if there is a straight OC12 POS card for the 7500, but I 
am guessing not.

You can get a cheap-ass GSR on ebay or network-resell with a GE and OC12 
that should do the trick for only a few thousand. 12008's are cheap these 
days.

I've personally had very good luck with OC12 OSM cards on the 6500/7600, 
which are capable of line rate without question.





On Tue, 8 Feb 2005, Kevin wrote:

> We currently have a couple of 7500s.
> We are looking at adding more bandwith to a new backbone provider via an
> OC12.
> My question is can the 7500s handle an OC12, It looks like there is an
> oc12 PA for the 7500, a (PA-SRP-OC12)
> What kind of line-rate performace can I expect from this interface in a
> VIP4-50 or 80?
> Can I even use this to interface to a telco OC12 circuit?
>
> If a 7500 can't handle an oc12, it looks like a 7300 can, has anyone
> seen any performance numbers for these little units with an OC12?
>
>
> Kevin
> Honeycomb Internet Services
>
>
>
>
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-- Alex Rubenstein, AR97, K2AHR, alex at nac.net, latency, Al Reuben --
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