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process "HRPC hl2mcm igmp" on 3750G

Hello everyone!

 

In the recent time i'm encountering >20% CPU load on one of our 3750G stacked switch, which is not normal. Here's output of sh proc cpu sort:

 

CPU utilization for five seconds: 21%/4%; one minute: 22%; five minutes: 22%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 182    12058266  47528478        253  9.58%  9.46%  9.49%   0 HRPC hl2mcm igmp
 192    66779355 311291056        214  1.11%  0.96%  1.11%   0 Spanning Tree
  60      643737  18717428         34  0.63%  0.60%  0.61%   0 hrpc -> response
  94     5529837  29921429        184  0.47%  0.28%  0.31%   0 hpm counter proc
   1      149037   1953544         76  0.15%  0.15%  0.13%   0 Chunk Manager

 

what is the HRPC hl2mcm igmp process?

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