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Beginner

High CPU usage on a voice gateway

Hi everybody,

I'm working on a CISCO 2821 voice gateway, the IOS version is 15.1(4)M5, RELEASE SOFTWARE (fc1).

The problem is that the command "show processes cpu" shows huge percentage (93%)

 sintcvo01#sh proc cpu sorted | ex 0.0
CPU utilization for five seconds: 92%/9%; one minute: 93%; five minutes: 93%
 PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
 329    15490864     2496660       6204 32.58% 32.30% 32.31%   0 SNMP Traps
 304     6171264     4830675       1277 12.64% 12.60% 12.62%   0 VTSP
 292     5303860     1610546       3293 10.40% 10.36% 10.38%   0 ISDN
  12     2640560     2713232        973  9.52%  9.44%  9.45%   0 AFW_application_
 324    48127856    71585907        672  5.20%  5.17%  5.21%   0 IP SNMP
 331     1187324     8532529        139  2.56%  2.62%  2.63%   0 ISDN L2 Process
 326    23503104    35221937        667  2.32%  2.38%  2.33%   0 SNMP ENGINE
 301      495492      564098        878  1.12%  1.11%  1.11%   0 CC-API_VCM
 124    11899152    44269538        268  1.12%  1.17%  1.19%   0 IP Input
 308      803896     1911925        420  0.71%  0.68%  0.69%   0 TSP
 325     5118424    35204600        145  0.47%  0.46%  0.47%   0 PDU DISPATCHER
 197         456         210       2171  0.47%  0.42%  0.11% 514 SSH Process
 322      300732      234874       1280  0.39%  0.34%  0.34%   0 voice file acct
 100      234284   295556637          0  0.39%  0.46%  0.47%   0 Ethernet Msec Ti
  53      143916     1364510        105  0.23%  0.22%  0.23%   0 IF-MGR control p

Can you, guys, give me some tips to treat this issue?

thanks guys in advance.

5 REPLIES 5
Rising star

Hi Amin,

Hi Amin,

Try disbaling SNMP logging/trap  ,as you can see SNMP is taking a toll on CPU.

You can probably try a reboot after that,should fix it.thanks

Highlighted
Beginner

Hi Deepak,

Hi Deepak,

thank you for your feedback.

how do you disable SNMP process on the router?

Rising star

You can try below.

You can try below.

no snmp-server enable traps or no snmp-server host.



Beginner

Indeed, I the thing now is

Indeed, I the thing now is that a big portion of the CPU resources is taken by hidden processes.

how to gain back this big portion of CPU?

Thanks in advance, Deepak.

Rising star

You can  raise a TAC case for

You can  raise a TAC case for CPU profiling of your router which can give you exact details around the CPU processes cuasing this.

Refer to below doc.

 https://supportforums.cisco.com/document/61366/troubleshooting-high-cpu-snmp-engine-process-ios

http://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/15095-highcpu.html

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