[c-nsp] Smallest router that supports GigE over MM fibre

[Andris Zarins]

We have a production box 2811 doing apporox 40mbit of normal internet
traffic + OSPF + BGP (not full of course) at about 15-18% CPU load, and
I have no reasons to think that 2821 will have problems to route
200mbit. 

What makes you thing that there will be 100% CPU load? Have you ever
tested it? 


AZ

-----Original Message-----
From: Gert Doering [mailto:gert at greenie.muc.de] 
Sent: Friday, September 30, 2005 1:30 PM
To: Kristofer Sigurdsson
Cc: Andris Zarins; Vincent De Keyzer; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Smallest router that supports GigE over MM fibre

Hi,

On Fri, Sep 30, 2005 at 09:46:38AM +0000, Kristofer Sigurdsson wrote:
> A 2821 *will not* route 200 Mbit/s.  You might be able to squeeze that

> out of a 2851, but it would be at 100% CPU load.  

The router performance PDF claims 87 Mbit/s. for the 2821 and 112
Mbit/s.
for the 2851 - but that's for 64 byte packets.  So if your packets are
larger ("internet standard mix") both routers will do 200 Mbit/s.

OTOH if you have to calculate DoS attacks, virus outbreaks, etc. into
the mix, and want a router that can do 200 Mbit/s. under worst-case
conditions, you'll need at least a 3845 (which the performance PDF
claims
to be faster than a NPE-400).

gert 

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