Igmp Snooping Troubleshooting; Igmp Snooping Monitor And Debug Command List - Digitalchina Networks DCS-3950 series Manual

Multicast Configuration
The same as scenario 1.
IGMP Snooping listening result:
Similar to scenario 1.

11.4 IGMP Snooping Troubleshooting

11.4.1 IGMP Snooping Monitor and Debug Command
List
11.4.1.1 debug igmp snooping all/packet/event/timer/mfc
Command：debug igmp snooping all/packet/event/timer/mfc
no debug igmp snooping all/packet/event/timer/mfc
Function：Enable the IGMP Snooping debug switch of the switch; the 'no debug igmp
snooping all/packet/event/timer/mfc' command is to disable the debug switch.
Command mode：Admin Mode
Default Setting：By default the IGMP Snooping debug switch of the switch is disabled.
Usage Guide: The command is used for enable the IGMP Snooping debugging switch of
the switch, switch IGMP data packet message can be shown with 'packet' parameter,
event message with 'event', timer message with 'time', down sending hardware entries
message with 'mfc', and all debugging messages with 'all'.
11.4.1.2 show ip igmp snooping
Command：show ip igmp snooping [vlan <vlan-id>]
Parameter: <vlan-id> is vlan number of specify display IGMP Snooping information
Command mode: Admin Mode
Usage Guide: If no vlan number is specified, it will show whether global igmp snooping
switch is on, which vlan is configured with l2-general-querier function, and if a vlan
number is specified, detailed IGMP messages for this vlan will be shown
Example:
1. Display the summary infromation of IGMP Snooping of the switch
Switch(config)#show ip igmp snooping
Global igmp snooping status: Enabled
Igmp snooping is turned on for vlan 1(querier)
Igmp snooping is turned on for vlan 2
Displayed Informaton
Global igmp snooping status
DCS-3950 series Ethernet switch manual
Explanation
Whether the global igmp snooping switch of the switch
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