NE40 router SRU board sometimes switch over, when we try to console to NE40 router we saw some system log warning.
The mentin alarm that we saw on terminal console as bellow:
Jul 1 01:20:43 2007 HT2-02-01-NE40 SRM/6/general log:
Slot9 Ipc State[1,1]----NORMAL
%Jul 1 01:26:22 2007 HT2-02-01-NE40 RSA/5/Read_keys:Fail to open file when reading keys.
Slave mpu/sru is reseted
%Jul 1 01:26:29 2007 HT2-02-01-NE40 SRM/1/NoReply:OID=220.127.116.11.4.1.2011.2.17.0.90,SlotNum=9,Slave SRU has no reply!
%Jul 1 01:26:29 2007 HT2-02-01-NE40 SRM/1/DEMFail:Slot 9 DEM channel 1 failed!
%Jul 1 01:26:29 2007 HT2-02-01-NE40 SRM/7/DEMSwitch:Module slot 9 net port ID 1 DEM channel switch.
%Jul 1 01:26:29 2007 HT2-02-01-NE40 SRM/1/DEMFail:Slot 9 DEM channel 2 failed!
1- SRU hardware board was correct. Because the problem sometimes happen.
2- VRP software need not upgrade because no any precaution about this version
3-System does not receive DEM channel handshake packet, if the service is busy, the packet with high priority will be handled first, by looking for system busy reason we found that some debug channel was ON then by Put command line "Undo debug all" problem were solved.
1- SRU board was damaged
2- SRU software need patch or upgrade
3- System busy because DEM channel handshake packet failed according to alarm information.