Configuring explicit host tracking

Configure explicit host tracking to track all the source and group members.

Procedure

  1. Enter Interface Configuration mode:

    enable

    configure terminal

    interface GigabitEthernet {slot/port[/sub-port][-slot/port[/sub-port]][,...]} or interface vlan <1–4059>

    Note

    Note

    If the platform supports channelization and the port is channelized, you must also specify the sub-port in the format slot/port/sub-port.

  2. Configure explicit host tracking:

    ip igmp igmpv3–explicit-host-tracking

  3. Display all the tracked members for a specific group:

    show ip igmp group group <A.B.C.D> tracked-members [member-subnet <A.B.C.D/X>] [source-subnet <A.B.C.D/X>] [port {slot/port[/sub-port][-slot/port[/sub-port]][,...]}] [vlan <1-4059>]

  4. Display the IGMPv3 specific data:

    show ip igmp group group <A.B.C.D> detail port {{slot/port[/sub-port][-slot/port[/sub-port]][,...]}} vlan <1-4059>

Example

Configure explicit host tracking:

Switch:1(config-if)#ip igmp igmpv3–explicit-host-tracking

Display all the tracked members:

Switch:1(config-if)#show ip igmp group
================================================================================
                                   Igmp Group - GlobalRouter
================================================================================
GRPADDR         INPORT          MEMBER          EXPIRATION TYPE  
--------------------------------------------------------------------------------
   225.1.1.1       V22-1/1         22.22.22.200    178        Dynamic
   225.1.1.2       V22-1/1         22.22.22.200    178        Dynamic
   225.1.1.3       V22-1/1         22.22.22.200    178        Dynamic
   225.1.1.4       V22-1/1         22.22.22.200    178        Dynamic
   225.1.1.5       V22-1/1         22.22.22.200    178        Dynamic
   225.1.1.6       V22-1/1         22.22.22.200    178        Dynamic
   225.1.1.7       V22-1/1         22.22.22.200    178        Dynamic
   225.1.1.8       V22-1/1         22.22.22.200    178        Dynamic
   225.1.1.9       V22-1/1         22.22.22.200    178        Dynamic
   225.1.1.10      V22-1/1         22.22.22.200    178        Dynamic
   225.12.12.1     V2222-2/16      22.2.2.200      172        Dynamic
   225.12.12.2     V2222-2/16      22.2.2.200      172        Dynamic
   225.12.12.3     V2222-2/16      22.2.2.200      172        Dynamic
   225.12.12.4     V2222-2/16      22.2.2.200      172        Dynamic
   225.12.12.5     V2222-2/16      22.2.2.200      172        Dynamic
   225.12.12.6     V2222-2/16      22.2.2.200      172        Dynamic
   225.12.12.7     V2222-2/16      22.2.2.200      172        Dynamic
   225.12.12.8     V2222-2/16      22.2.2.200      172        Dynamic
   225.12.12.9     V2222-2/16      22.2.2.200      172        Dynamic
   225.12.12.10    V2222-2/16      22.2.2.200      172        Dynamic
   226.1.1.1       V33-1/23        33.33.33.200    173        Dynamic
   226.1.1.2       V33-1/23        33.33.33.200    173        Dynamic
   226.1.1.3       V33-1/23        33.33.33.200    173        Dynamic
   226.1.1.4       V33-1/23        33.33.33.200    173        Dynamic
   226.1.1.5       V33-1/23        33.33.33.200    173        Dynamic
   226.1.1.6       V33-1/23        33.33.33.200    173        Dynamic
   226.1.1.7       V33-1/23        33.33.33.200    173        Dynamic
   226.1.1.8       V33-1/23        33.33.33.200    173        Dynamic
   226.1.1.9       V33-1/23        33.33.33.200    173        Dynamic
   226.1.1.10      V33-1/23        33.33.33.200    173        Dynamic
   226.22.22.1     V3333-2/22      33.3.3.200      173        Dynamic
   226.22.22.2     V3333-2/22      33.3.3.200      173        Dynamic
   226.22.22.3     V3333-2/22      33.3.3.200      173        Dynamic
   226.22.22.4     V3333-2/22      33.3.3.200      173        Dynamic
   226.22.22.5     V3333-2/22      33.3.3.200      173        Dynamic
   226.22.22.6     V3333-2/22      33.3.3.200      173        Dynamic
   226.22.22.7     V3333-2/22      33.3.3.200      173        Dynamic
   226.22.22.8     V3333-2/22      33.3.3.200      173        Dynamic
   226.22.22.9     V3333-2/22      33.3.3.200      173        Dynamic
   226.22.22.10    V3333-2/22      33.3.3.200      173        Dynamic
   228.45.45.45    V222-1/1        122.122.122.200 173        Dynamic
   228.56.56.56    V222-1/1        122.122.122.200 166        Dynamic
   229.1.1.1       V333-1/17       133.133.133.200 172        Dynamic
   229.32.32.32    V222-1/1        122.122.122.200 169        Dynamic
   232.1.1.1       V333-1/17       133.133.133.200 170        Dynamic
   232.1.1.2       V333-1/17       133.133.133.200 170        Dynamic
   232.1.1.3       V333-1/17       133.133.133.200 170        Dynamic
   232.1.1.4       V333-1/17       133.133.133.200 170        Dynamic
   232.1.1.5       V333-1/17       133.133.133.200 170        Dynamic
   232.1.1.6       V333-1/17       133.133.133.200 170        Dynamic
   232.1.1.7       V333-1/17       133.133.133.200 170        Dynamic
   232.1.1.8       V333-1/17       133.133.133.200 170        Dynamic
   232.1.1.9       V333-1/17       133.133.133.200 170        Dynamic
   232.1.1.10      V333-1/17       133.133.133.200 170        Dynamic
   232.32.32.1     V222-1/1        122.122.122.200 165        Dynamic
   232.32.32.2     V222-1/1        122.122.122.200 165        Dynamic
   232.32.32.3     V222-1/1        122.122.122.200 165        Dynamic
   232.32.32.4     V222-1/1        122.122.122.200 165        Dynamic
   232.32.32.5     V222-1/1        122.122.122.200 165        Dynamic
   232.32.32.6     V222-1/1        122.122.122.200 165        Dynamic
   232.32.32.7     V222-1/1        122.122.122.200 165        Dynamic
   232.32.32.8     V222-1/1        122.122.122.200 165        Dynamic
   232.32.32.9     V222-1/1        122.122.122.200 165        Dynamic
   232.32.32.10    V222-1/1        122.122.122.200 162        Dynamic
   232.42.42.1     V222-1/1        122.122.122.200 167        Dynamic
    
65 out of 65 group Receivers displayed 

Total number of unique groups 65  

Display all the tracked members for a specific group:

Switch:1(config-if)#show ip igmp group group 232.1.1.1 tracked-members
================================================================================
                          Members of Channels/Groups - GlobalRouter 
================================================================================
INTERFACE       CHANNEL/GROUP         MEMBER           MEMBER_MODE EXP
--------------------------------------------------------------------------------
Vlan333-2/30    */232.1.1.1          133.133.133.200   IS_EXCLUDE  205

Note:
The "*" attached to the interface (if any) indicates that the interface has explicit host tracking disabled.

Display IGMPv3 specific data:

Switch:1(config-if)#show ip igmp group group 232.32.32.10 detail
================================================================================
                        Igmp Group Detail - GlobalRouter
================================================================================
Interface:                     Vlan222-1/10
IGMPv3 Group:                  232.32.32.10
Interface Group Mode:          INCLUDE
Interface Compatibility Mode:  IGMP_V3
V2 Host Timer:                 Not Running
V1 Host Timer:                 Not Running
Interface Group Include Source List:
        Source Address  Expires   
        133.133.133.200 114      

Variable definitions

Use the data in the following table to use the ip igmp igmpv3–explicit-host-tracking command.

Variable

Value

explicit-host-tracking

Enables explicit host tracking on IGMPv3. The default state is disable.

<A.B.C.D>

Specifies the IP address of the group of the tracked member.