North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: Cisco 7200 VXR with NPE-400 (was RE: The market must be coming back)
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:[email protected]] > Sent: 22. m�ja 2002 16:15 > To: [email protected] > Cc: [email protected] > 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 > >
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