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

[Gert Doering]

Hi,

On Mon, May 16, 2005 at 08:51:54PM -0400, Justin M. Streiner wrote:
> On Mon, 16 May 2005, Gert Doering wrote:
> 
> > What's "relatively low pps" for you?  A NPE-G1 should be able to shove
> > through a OC-3 worth of 64byte packets with a load below 50% - unless
> > you have "evil" features enabled, IP accounting being the worst of them.
> 
> I saw this router buckle under a ~50kpps ICMP flood on top of the normal 
> traffic.  It dropped out of the IBGP mesh and lost all OSPF adjacencies.
> The interfaces were still up, do the router still had enough juice to 
> handle keepalives, but it was pretty much unresponsive to all admin 
> connections - console was barely usable.  This was traffic directed at a 
> customer behind the router, not to the router itself.

Hmmm.  This is not so good news.  A NPE-300 with netflow export can handle
that load (but it will bring it up to 100%), so the NPE-G1 should quite
easily handle it.  Even with 80kpps (maxing out the sender) I couldn't
get the NPE-300 to lose its BGP sessions.

My tests have been run with 12.2(18)S7, so YMMV.

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de