12-27-2012 04:53 AM - edited 03-04-2019 06:30 PM
i have a 2901 running C2900-UNIVERSALK9-M), Version 15.1(4)M1 which is showing some odd behaviour on the WAN link. When there is traffic on the WAN Link the responce times are normal ( 2ms - 8ms) but when there is no traffic (evenings/weekends) the response times jump up to between 100ms - 400ms.
The router works fine and there are no obvious symptons showing to the end users. This behaviour stopped for a few days after a reboot but then started again.
Is there anything i can run on the router to see what might be causing this? or has anyone come accross this before.
Thanks you anyhelp
12-27-2012 05:54 AM
HI
Can you check the memory and processor utilization during the time of the issue and check which process is using the max.
Thanks
12-27-2012 07:45 AM
Below is the memory and CPU utilization while the responce times were between 100 and 200ms and the utilization on the circuit was 0.3%. The response times to the A End of the circuit is static at around 2ms -3ms as expected.
xxxxxx#sho processes memory
Processor Pool Total: 320488576 Used: 46632680 Free: 273855896
I/O Pool Total: 41943040 Used: 19017520 Free: 22925520
PID TTY Allocated Freed Holding Getbufs Retbufs Process
0 0 182889668 119260576 60102516 672 343570 *Init*
0 0 12328 1300612 12328 0 0 *Sched*
0 0 81072000 79620192 762600 46 46 *Dead*
0 0 0 0 394868 0 0 *MallocLite*
1 0 41441212 36205248 5507448 0 0 Chunk Manager
2 0 240 240 4232 0 0 Load Meter
3 0 21016 712 46112 0 0 LICENSE AGENT
4 0 65588 0 90820 0 0 EDDRI_MAIN
5 0 0 0 7232 0 0 RO Notify Timers
6 0 3340 240 10332 0 0 Check heaps
7 0 10795176 13207480 127028 49 0 Pool Manager
8 0 0 0 7232 0 0 DiscardQ Backgro
9 0 240 240 7232 0 0 Timers
10 0 0 0 4232 0 0 WATCH_AFS
11 0 0 0 7232 0 0 License Client N
12 0 0 0 7232 0 0 Image License br
13 0 2391728888 2391730096 7264 0 0 Licensing Auto U
14 0 240 240 7232 0 0 Environmental mo
15 0 0 0 7232 0 0 IPC Event Notifi
xxxxxx#sho processes cpu
CPU utilization for five seconds: 5%/4%; one minute: 2%; five minutes: 1%
12-27-2012 12:04 PM
where is the WAN link connected? to provider?
12-28-2012 12:29 AM
The WAN link connects to a 6524 within our own MPLS network.
12-27-2012 06:06 AM
Have you checked for errors on the interface?
Sent from Cisco Technical Support iPad App
12-27-2012 07:27 AM
There are no errors on either end of the WAN interface.
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