Cisco CME, High CPU Utilization

[Vladyslav Zakhozhai]

Hello.

There is Cisco router 2851 with CME 7.1 on it with PVDM2-48 (the result of show version and show inventory is attached).

There is SIP trunk connected to this router. Also this router serves for 50 SIP phones Linksys SPA922/Cisco SPA504G. The transcoder is configured on the router for detecting dtmf signals from rtp flow (only for inbound calls; provider sends inbound dtmf signals in inband g711). Outbount calls are not processed by transcoder.

Some times (a few times a day) I see the following warning:

*Aug 13 14:56:53.479: %IVR-3-LOW_CPU_RESOURCE: IVR: System experiencing high cpu utilization (97/100).
Aug 13 17:59:22 192.168.90.2 4830:      Call (callID=26073) is rejected.

Also debugs and partial config are attached.

I don't understand what is a cause of my problem.

Thank you.

P. S. Sorry for my english

[paolo bevilacqua · Accepted solution]

Try 15.0(1)M3 that is very stable.

[Vladyslav Zakhozhai]

Thank you for answer.

But I have no enough hardware resources to store this IOS on my router:

FLASH: 64 MB

RAM: 256 MB

[paolo bevilacqua]

No, that is fine.

[Vladyslav Zakhozhai]

Thank you for answer.

Sorry, but can you give it to me (if you able to go to cisco support), I have no access to cisco software resources.

Sorry once more if my question was not correct.

[paolo bevilacqua]

Sorry, Cisco software is only legally obtained from them.

Thank you for the nice rating and good luck!

[Vladyslav Zakhozhai]

Thank you for the answer. This discussion is not colsed yet. I'll try this IOS and report about results.

P. S. I just notised the following additional warning:

*Sep  6 18:57:09.555: %IP-3-LOOPPAK: Looping packet detected and dropped -

src=192.168.100.1, dst=192.168.100.1, hl=20, tl=100, prot=17, sport=17159, dport=19371

in=local, nexthop=192.168.100.1, out=GigabitEthernet0/1.100

options=none -Process= "VOIP_RTCP", ipl= 0, pid= 256,  -Traceback= 0x41F5CDC8z 0x41F5D04Cz 0x41F5E260z 0x41F5F1B8z 0x41F5F5E4z 0x41F602E0z 0x41F608C4z 0x41F60930z 0x4220E16Cz 0x43256BA4z 0x4325D2A8z 0x430C9668z 0x430C964Cz

Is it belongs to my problem discussion?