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How to resolve IPC channel abnormal problem.

Publication Date:  2012-07-27 Views:  81 Downloads:  0
Issue Description
display communication-channel from NE40, you can find some IPC channel  status is abnormal
  Slot#     Curr-Chan/Status    Slave-Chan/Status   Switch number
  1         IPC_B/Normal        IPC_A/Abnormal          4
      
Alarm Information
%Jun 15 12:12:22 2006 rdg2-rpr4-pe1 SRM/1/DEMFail:Slot 2 DEM channel 2 failed!
Handling Process
1. "display communication-channel" to check current status.
2. "switch communication-channel ipc" to change current abnormal channel to Slave status.
3. enter diag mode.
4. "set sru memory 6 fe00a000 1 ef" "set sru memory 6 fe00a000 1 ff" to reset DEM channel. "6" equal to Main MPU slot number, "1" equal to LPU slot number.
5. then "display communication-channel", you can find that IPC channel status is normal.
Root Cause
Communication between MPU and LPU is basd on normal DEM channel. It is important to maintain both current and slave DEM channel working well.
      
Suggestions
Just give a solution to resolve to DEM channel abmornal problem.
      

END