[c-nsp] OC12 in a 7500

[Kevin]

I'm too up to speed on the 12000 GSR stuff, I'm used to the 7500 with
the RSP controling the router, and vip's being mini routers for dCEF.
What exatcly does the CSC, FSC, and GRP do? I'm thinking the GRP runs
the IOS for routing protocols and interface configuration. I'm not quite
sure what the CSC, and FSCs do.

Kevin
Honeycomb Internet Services

-----Original Message-----
From: Alex Rubenstein [mailto:alex at nac.net] 
Sent: Tuesday, February 08, 2005 6:17 PM
To: Kevin
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] OC12 in a 7500


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 --
--    Net Access Corporation, 800-NET-ME-36, http://www.nac.net   --