North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: slowing down every 60 seconds due to BGP scaner
Thank you for all your replys ! Sorry for the lack of more info . There are 12000s, with 12.0+ IOS , has one or more EBGP peers and 10+ IBGP . Customer gave us continuous ping and pinpoint this 60s thing . I think Chris Konger is right . We will put more memory and enable CEF on the line cards to see if its better . Ben --- Chris Konger <[email protected]> wrote: > tang bing wrote: > > > I found all of my backbone routers slow down every > 60 seconds, > > it will last 5 seconds . While this happens , the > CPU may get > > more than 70% utilization and BGP scaner is the > process that > > chewing the CPU (50%). Customer with video stream > noticed that. > > Cisco said it's normal. Any idea ? > > The 60 second lags will be observed with any packets > that are > *process* switched. Fast/CEF switching aren't > impacted by the > minute processes. So the more traffic you can get > off the CPU, > the better. > > BTW, if you are doing pings/traces from the routers > to check > this you will always observe the 60 second lags. > This is because > these commands are *always* process switched when > executed on > the router. > > Chris Konger > > PNAP Network Engineer > 415-364-2105 direct > InterNAP Network Services > 415-296-8611 fax > 555 Montgomery, Suite 816 > 415-596-4891 cell > San Francisco CA 94111 > 888-841-2810 pgr __________________________________________________ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/
|