Displays information about the Internet Group Management Protocol (IGMP) multicast discovery routes. If you do not specify a VRF name or range of VRF IDs, the results show information for the Global Router. If you do specify a VRF name or range of VRF IDs, the results show information only for the VRFs you specify.
show ip igmp mrdisc
show ip igmp mrdisc vrf WORD<1-16>
show ip igmp mrdisc vrfids WORD<0-512>
None
Privileged EXEC
This command is not supported on a node configured as the DvR Leaf within a DvR domain.
The show ip igmp mrdisc command displays the following information:
| Output field | Description | 
|---|---|
| VLAN ID | Indicates the VLAN ID. | 
| MRDISC | Indicates the status of multicast router discovery. | 
| MAX ADV INTERVAL | Indicates the maximum number (in seconds) between successive advertisements. | 
| MIN ADV INTERVAL | Indicates the minimum number (in seconds) between successive advertisements. | 
| MAX INIT ADV INTERVAL | Indicates the maximum number (in seconds) between successive initial advertisements. | 
| MAX INIT ADV | Indicates the maximum number of initial multicast advertisements after initialization. | 
| NBR DEAD INTERVAL | Indicates the multicast router discovery dead interval — the number of seconds the multicast route neighbors for the switch must wait before assuming that the multicast router is down. | 
| DISCOVERED RTR PORTS | Indicates the ports discovered. |