VLAN name or number. If you do not specify a VLAN, MSS displays querier information for all VLANs.

show igmp querier

Displays information about the active multicast querier, on one VLAN or all VLANs. Queriers are listed separately for each VLAN. Each VLAN can have only one querier.

Syntax: show igmp querier [vlan vlan-id] vlan vlan-id

Defaults: None.

Access: Enabled.

Examples: The following command displays querier information for VLAN orange:

DWS-1008#show igmp querier vlan orange

 

Querier for vlan orange

 

 

Port Querier-IP

Querier-MAC

TTL

---------------------------------------------------------------------

1

193.122.135.178 00:0b:cc:d2:e9:b4 23

The following command shows the information MSS displays when the querier is the switch itself:

DWS-1008#show igmp querier vlan default

Querier for vlan default:

I am the querier for vlan default, time to next query is 20

The output indicates how many seconds remain before the pseudo-querier on the switch broadcasts the next general query report to IP address 224.0.0.1, the multicast all-systems group.

If IGMP snooping does not detect a querier, the output indicates this finding, as shown in the following example:

DWS-1008#show igmp querier vlan red

Querier for vlan red:

There is no querier present on vlan red

This condition does not necessarily indicate a problem. For example, election of the querier might be in progress.

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D-Link dws-1008 manual Show igmp querier, DWS-1008# show igmp querier vlan orange, DWS-1008#show igmp querier vlan default