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Do you have a lot of ARP traffic on the network? I ran into an issue recently when the internal hosts pointed to their own interface as their default gateway as opposed to the router’s IP address. This was causing excessive CPU utilization related to the ARP processing.
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security) bdennis@internetworkexpert.com Internetwork Expert, Inc. http://www.InternetworkExpert.com Toll Free: 877-224-8987 Direct: 775-745-6404 (Outside the US and Canada) —–Original Message—– From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Subhash P Sent: Tuesday, September 05, 2006 5:23 PM To: Vishal Patel Cc: Cisco certification Subject: Re: 7500 CPU Processes
Hi Vishal,
Can you try disabling the ” ip accounting” feature for a while and see if its enabled?
Regards, Subhash.
On 9/6/06, Vishal Patel wrote: > > Hey guys, > > I have a 7500 , with dual RSP 4 / 256 MB RAM. > > The router has 1 VIP 4-80 , and that VIP has two PAs > > 1) Fast Eth > > 2) ATM > > Customers connect to Fast Eth , on it’s subinterfaces and almost all the > Fast Eth subinterfaces have CAR being implemented ( may be around 250 > subinterfaces ) > > And ATM is used to connect to the SP’s network , it also have around 80 > VCs. > > Router runs around 12 VRFs but no MPLS ( VRFs are connected back to > back > ) > > Now the issue is the cpu run at around 80 % on average ,and the IP Input > Process is eating 25/30 % of the processes. > > I have trying to implement all the fast , CEF and DCEF switching , still > it > seems lot of traffic is process switched. > > VIP’s cpu runs at only 20 % > > Any ideas which will help me to releive the CPU ? > > Cheers > > Vishal > >