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.  |