[c-nsp] DS-3 -> OC-3 upgrade

[Andrey A. Ryazanov]

NPE-300 won't do over 110-120Mbps (e.g. 200Mbps. "aggregate")
NPE-400 won't do this too.

You need NPE-G1 at least, or ... a Juniper router :)

Andrey Ryazanov
Digital Network JSC
+7 095 723 8332 ext. 203

---------- Original Message -----------
From: Rick Ernst <ernst at easystreet.com>
To: cisco-nsp at puck.nether.net
Sent: Mon, 16 May 2005 12:32:59 -0700 (PDT)
Subject: [c-nsp] DS-3 -> OC-3 upgrade

> I'm currently looking at upgrading our border routers from DS-3 to
> 100Mbs/Ethernet or OC-3.  The routers are 7206VXRs with NPE-300/256MB. They
> are each accepting full tables and are RR-clients for the core.
> 
> I've noticed with the DS-3s that CPU utilization is roughly 40% at 40Mbs of
> in/out traffic (80Mbs aggregate).  I've also seen that over 40% that
> latency increases through the router.  There is a small ACL (about 30
> entries), plus RPF checks on inbound traffic.
> 
> Based upon this empirical evidence, I'm hesitant to go OC-3, or even 100Mbs
> through them.  Do my numbers seem way off, or am I missing something?
> Would upgrading to NPE-400 "surely be enough", or should I look at other
> ways of bringing in higher-speed links?
> 
> Thanks,
> Rick
> 
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------- End of Original Message -------