Debugging IGMP
When an IGMP operation fault occurs, you can run the debugging commands describes in this section in the user view to debug IGMP, display the debugging information, and locate the fault.
Before the debugging, you must run the terminal monitor and terminal debugging commands in the user view to enable the information display and debugging display functions of the terminal, so that debugging information is displayed on the terminal.
Enabling the debugging affects system performance. Therefore, after the debugging, you should run the undo debugging all command to disable the debugging immediately.
Table 1 shows the related operations for debugging IGMP.
| Operation | Command |
|---|---|
Enable all the debuggings of IGMP. |
debugging igmp [ vpn-instance vpn-instance-name | all-instance ] all |
Enable the debugging of IGMP events. |
debugging igmp [ vpn-instance vpn-instance-name | all-instance ] event [ advanced-acl-number ] |
Enable the debugging of an IGMP Leave message. |
debugging igmp [ vpn-instance vpn-instance-name | all-instance ] leave [ basic-acl-number ] |
Enable the debugging of the MPing interface. |
debugging igmp [ vpn-instance vpn-instance-name | all-instance ] mping [ basic-acl-number ] |
Enable the debugging of the MTrace interface. |
debugging igmp [ vpn-instance vpn-instance-name | all-instance ] mtrace [ advanced-acl-number ] |
Enable the debugging of IGMP Query messages. |
debugging igmp [ vpn-instance vpn-instance-name | all-instance ] query [ basic-acl-number ] [ receive | send ] |
Enable the debugging of IGMP Report messages. |
debugging igmp [ vpn-instance vpn-instance-name | all-instance ] report [ advanced-acl-number ] |
Enable the debugging of IGMP SSM mapping. |
debugging igmp [ vpn-instance vpn-instance-name | all-instance ] ssm-mapping [ advanced-acl-number ] |
Enable the debugging of IGMP timers. |
debugging igmp [ vpn-instance vpn-instance-name | all-instance ] timer |