View IGMP Information for Layer 2 VSN Multicast

Use the following commands to display IGMP information.

Procedure

  1. Enter Privileged EXEC mode:

    enable

  2. Display information about the interfaces where IGMP is enabled:

    show ip igmp interface [gigabitethernet {slot/port[/sub-port][-slot/port[/sub-port]][,...]}][vlan <1-4059>[vrf WORD<1–16>][vrfids WORD<0–512>]

    Ensure that the output displays snoop-spb under MODE.

  3. Display information about the IGMP cache:

    show ip igmp cache [vrf WORD<1–16>][vrfids WORD<0–512>]

  4. Display information about the IGMP group:

    show ip igmp group [count][group {A.B.C.D}][member-subnet {A.B.C.D/X}] [vrf WORD<1–16>][vrfids WORD<0–512>]

  5. Display information about the IGMP sender:

    show ip igmp sender [count][group {A.B.C.D}][member-subnet {A.B.C.D/X}][vrf WORD<1–16>][vrfids WORD<0–512>]

  6. Display information about IGMP snoop-trace information:

    show ip igmp snoop-trace [group {A.B.C.D}][source {A.B.C.D}][vrf WORD<1–16>][vrfids WORD<0–512>]

Example

Switch:1#show ip igmp interface

=========================================================================================
                         Igmp Interface - GlobalRouter
=========================================================================================
       QUERY              OPER            QUERY   WRONG              LASTMEM
IF     INTVL STATUS VERS. VERS QUERIER    MAXRSPT QUERY JOINS ROBUST QUERY   MODE   L2ISID
-----------------------------------------------------------------------------------------
V100   125    activ  2     2   0.0.0.0    100     0     0     2      10      snoop-spb 1100 

1 out of 1 entries displayed
Switch:1#show ip igmp interface vlan 2
========================================================================================
                                  Vlan Ip Igmp
========================================================================================
VLAN QUERY QUERY ROBUST VERSION LAST  PROXY  SNOOP  SNOOP    SSM    UPnP   FAST   FAST
ID   INTVL MAX                  MEMB  SNOOP  ENABLE ORIGIN   SNOOP  FILTER LEAVE  LEAVE
           RESP                 QUERY ENABLE                 ENABLE ENABLE ENABLE PORTS
----------------------------------------------------------------------------------------
2   125   100   2      2       10    false   false   RADIUS   false   false   false        

VLAN SNOOP   SNOOP           DYNAMIC   COMPATIBILITY EXPLICIT UPnP  
ID   QUERIER QUERIER         DOWNGRADE MODE          HOSTS    FILTER
     ENABLE  ADDRESS         VERSION                 TRACKING ADDRESS
----------------------------------------------------------------------------------------
2   false   0.0.0.0         enable    disable       disable  239.255.255.250/32

Switch:1#show ip igmp group

================================================================================
                           Igmp Group - GlobalRouter
================================================================================
GRPADDR         INPORT          MEMBER          EXPIRATION TYPE       L2ISID
--------------------------------------------------------------------------------
224.5.2.1       V701-1/4        62.0.1.1        214        Dynamic    40400
224.5.2.2       V702-1/4        62.0.2.1        221        Dynamic    40400
224.5.2.3       V703-1/4        62.0.3.1        217        Dynamic    40400
224.5.2.4       V704-1/4        62.0.4.1        223        Dynamic    40400

4 out of 4 group Receivers displayed

Total number of unique groups 2


Switch:1#show ip igmp sender
=============================================================================
                           Igmp Sender - GlobalRouter
=============================================================================
                                           PORT/
GRPADDR         IFINDEX    MEMBER          MLT        STATE           L2ISID
-----------------------------------------------------------------------------
233.252.0.1    Vlan 501   192.2.0.1      spb        NOTFILTERED    
233.252.0.2    Vlan 501   192.2.0.1      spb        NOTFILTERED    
233.252.0.3    Vlan 501   192.2.0.1      spb        NOTFILTERED    
233.252.0.4    Vlan 501   192.2.0.1      spb        NOTFILTERED    
233.252.0.5    Vlan 501   192.2.0.1      spb        NOTFILTERED    
233.252.0.6    Vlan 501   192.2.0.1      spb        NOTFILTERED    
233.252.0.7    Vlan 501   192.2.0.1      spb        NOTFILTERED    
233.252.0.8    Vlan 501   192.2.0.1      spb        NOTFILTERED    
233.252.0.9    Vlan 501   192.2.0.1      spb        NOTFILTERED    
233.252.0.10   Vlan 501   192.2.0.1      spb        NOTFILTERED    

10 out of 10 entries displayed
Switch:1# show ip igmp snoop-trace

================================================================================
                           Snoop Trace - GlobalRouter
================================================================================
GROUP              SOURCE             IN     IN         OUT    OUT        TYPE      
ADDRESS            ADDRESS            VLAN   PORT       VLAN   PORT                 
--------------------------------------------------------------------------------
233.252.0.1        192.0.2.6         500    1/1        500    1/5        ACCESS   
233.252.0.10       192.0.2.7         500    1/1        500    1/10       ACCESS
9037147-00 Rev AB