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Beginner

processes cpu usage Cisco 3750 switch

 

I have 3750 switch . can someone please tell me what is the VMATM Callback and how i can reduce the CPU usage its taking. and i noticed this happened after i created a RSPAN of my upper link to the WAN ( All my internet traffic 50 Mpbs - 90 Mpbs ) is this any how related to VMATM Callback ?     

CPU utilization for five seconds: 98%/3%; one minute: 99%; five minutes: 99%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 169   286915034   8020524      35772 65.80% 65.46% 65.43%   0 VMATM Callback
 128   525577552 783235522        671  9.05%  9.54%  9.56%   0 Hulc LED Process
  75  2320659733 248596482       9335  4.13%  4.60%  5.03%   0 HLFM address lea

 

7 REPLIES 7
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Hall of Fame Community Legend

What exact IOS version are you running?

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(C3750-HBOOT-M) Version 12.2(25r)SEE4, its my version 

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Hall of Fame Community Legend

(C3750-HBOOT-M) Version 12.2(25r)SEE4, its my version 

This is the bootstrap version.  Post the complete output to the command "sh version".

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Cisco Employee

This 'VMATM' process mainly takes care of the removing the
addresses learnt on an interface when the interface goes down. 

The HRPC process apparently handles remote procedure calls on a 3750 stack

What is that you are seeing in the logs?

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096754: Jan 14 06:18:02: %HLFM-6-ADDR_SYNC: The system is retrying to sync the MAC addresses: reason 2

I see this in the log 

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Maybe you're hitting this bug:

https://tools.cisco.com/quickview/bug/CSCto85486

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Beginner

Did you ever find a fix for this? I've just hit exactly the same symptoms. High CPU with VMATM Callback at the top and "HLFM-6-ADDR_SYNC" messages in the log.

 

I'm running this c3750-ipbasek9-mz.122-25.SEE2 and probably long over due an upgrade.

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