01-13-2015 12:34 PM - edited 03-07-2019 10:12 PM
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
01-13-2015 06:03 PM
What exact IOS version are you running?
01-14-2015 06:22 AM
(C3750-HBOOT-M) Version 12.2(25r)SEE4, its my version
01-14-2015 01:18 PM
(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".
01-13-2015 06:03 PM
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?
01-14-2015 06:22 AM
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
01-15-2015 02:03 AM
Maybe you're hitting this bug:
https://tools.cisco.com/quickview/bug/CSCto85486
03-31-2015 03:53 AM
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.
06-17-2021 06:51 PM
Same issue on a C2960X Version 15.2(3r)E1 99% CPU and HLFM-6-ADDR_SYNC messages
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide