Hi all
One of my Catalyst 6509 VSS duo has for the last 24 hours been running with 100 % CPU usage:
I am not able to Telnet og SSH to the router, but console cable still works.
Runing IOS is sup-bootdisk:s72033-adventerprisek9-vz.122-33.SXI4.bin
As seen in the "show proc cpu" output inetd.proc, tcp.proc and ios.base takes up almost all of the CPU.
r-log-osls-s24-5-1#sho proc cpu | exclude 0.0%
CPU utilization for five seconds: 100%/31%; one minute: 100%; five minutes: 100%
PID 5Sec 1Min 5Min Process
1 0.1% 0.2% 0.3% kernel
16406 58.3% 61.4% 61.9% ios-base
16427 1.3% 1.2% 1.1% raw_ip.proc
16428 14.9% 15.3% 15.2% inetd.proc
16429 12.7% 12.8% 12.6% tcp.proc
16430 7.7% 7.2% 7.2% udp.proc
16431 2.9% 2.0% 1.9% iprouting.iosproc
16432 1.0% 1.0% 1.0% cdp2.iosproc
r-log-osls-s24-5-1#
The ios-base usage I can understand since the IOS is modular base. But inetd.proc and tcp.proc I cannot understand.
I have cleared all hanging TCP sessions and issued the "undebug all" command but still no progress.
The system have been stable for over 3 years now, and no changes was made to the configuration at the time th CPU usage stared rising.
Thanks in advance
Geir
-------------------------------------------------
23.10.2013
An udate to this issue.
"clear tcp tcb *" got the cpu usage to an acceptable level. But as soon as I try to SSH or Telnet to the router the CPU usage spikes again. And the inetd.proc and the tcp.proc are the processes with increased usage.
Geir
