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When the NMS (Network Management System, such as H3C IMC) cannot read or control the H3C Comware V7 platform switch:
If the fault has always existed, you can turn on the relevant debugging on the switch to observe the switch receiving/sending SNMP messages in real time; However, if the fault has been automatically recovered or automatically disappeared, at this time, how can managers troubleshoot the historical cause of the fault?
【View】
probe view
【Command】
display system internal snmp-agent packet receive
display system internal snmp-agent packet send
For example:
[H3C]probe
[H3C-probe]display system internal snmp-agent packet receive
[H3C-probe]display system internal snmp-agent packet send
With the above commands, you can check the switch receive/send related SNMP MIB node history for the corresponding time nodes of RX and TX inside the switch.
[H3C] probe
[H3C-probe] display system internal snmp-agent packet receive
MIB name Type Param NMS IP ID User RX time
sysUpTime.0 Get 0:0 100.3.x.xxx 80837 public 01-14 12:47:46:919
ifHCInUcastPkts.23 Get 0:0 100.3.x.xxx 80837 public 01-14 12:47:46:919
ifHCInMulticastPkts.23 Get 0:0 100.3.x.xxx 80837 public 01-14 12:47:46:919
ifHCInBroadcastPkts.23 Get 0:0 100.3.x.xxx 80837 public 01-14 12:47:46:919
......
[H3C-probe]display system internal snmp-agent packet send
MIB name NMS IP ID TX time
sysUpTime.0 100.3.x.xxx 80837 01-14 12:47:46:936
ifHCInUcastPkts.23 100.3.x.xxx 80837 01-14 12:47:46:936
ifHCInMulticastPkts.23 100.3.x.xxx 80837 01-14 12:47:46:936
......
Attention: If you find that the switch has received SNMP request messages at the relevant historical point in time through the above commands, but there is no SNMP response, you can feedback them to Pub H3CTS for technical support after collecting the following commands individually under the probe view.
[H3C-probe]display udp verbose
[H3C-probe]display system internal snmp-agent packet timed-out
[H3C-probe]display system internal snmp-age operation timed-out