RE: Cisco 7200 VXR with NPE-400 (was RE: The market must be coming back)

["Daniska Tomas" <tomas () tronet com>]

did you do netflow switching or cef + netflow accounting that time?

--
 
Tomas Daniska
systems engineer
Tronet Computer Networks
Plynarenska 5, 829 75 Bratislava, Slovakia
tel: +421 2 58224111, fax: +421 2 58224199
 
A transistor protected by a fast-acting fuse will protect the fuse by blowing first.



> -----Original Message-----
> From: Ralph Doncaster [mailto:ralph () istop com] 
> Sent: 22. mája 2002 16:15
> To: Heath_Dieckert () Dell com
> Cc: nanog () merit edu
> Subject: RE: Cisco 7200 VXR with NPE-400 (was RE: The market 
> must be coming back)
>
>
>
> > Based on our testing it looks like it all has to do with 
> packet size.  With
> > small packets the throughput is very low.  With what Cisco calls an
> > "internet mix" of packet sizes throughput is much better.  
> When doing max
> > MTU packets, the throughput is of course the best.  
>
> The other thing I've found about traffic type is how sensitive
> netflow is.  I was running it for a while, then I got a co-lo customer
> that had a lot of UDP traffic with small packet sizes and 
> rarely more than
> a few packets between the same src/dest ip/port (much like DNS
> queries).  It was enough to flatline the box and cause it to crash.
>
> -Ralph