The IGMP Static Group Range Support feature is an enhancement that simplifies the administration of devices that require many interfaces to be configured with many different ip igmp static-group command configurations by introducing the capability to configure group ranges in class maps and attach class maps to the ip igmp static-group command.

Perform this task to configure IGMP static group class maps and attach class maps to the ip igmp static-group command.

Note

Although the IGMP Static Group Range Support feature uses the MQC to define class maps, the procedure for configuring IGMP static group class maps is different from the normal procedure used to create class maps for configuring QoS traffic policies. For more information about IGMP static group class maps, including configuration guidelines, see the Class Maps for IGMP Static Group Range Support section.

Perform this optional task to verify the contents of IGMP static group class maps configurations, and to confirm that all group entries defined in class maps were added to the IGMP cache and the mroute table after you attach class maps to interfaces.

The following example shows how to configure a class map and attach the class map to an interface. In this example, a class map named static is configured and attached to FastEthernet interface 3/1.

class-map type multicast-flows static
 group 227.7.7.7
 group 232.7.7.7 to 232.7.7.9 source 10.1.1.10
 group 232.7.7.7 source 10.1.1.10
 group 227.7.7.7 to 227.7.7.9
.
.
.
!
interface FastEthernet3/1
 ip address 192.168.1. 2 255.255.255.0
 ip pim sparse-dense-mode
 ip igmp static-group class-map static
!

The following is sample output from the show ip igmp static-group class-map command. In this example, the output displays the contents of the IGMP static group class map named static (the class map configured in the Configuring IGMP Static Group Support Example section).

Router# show ip igmp static-group class-map
 
Class-map static
  Group address range 227.7.7.7 to 227.7.7.9
  Group address 232.7.7.7, source address 10.1.1.10
  Group address range 232.7.7.7 to 232.7.7.9, source address 10.1.1.10
  Group address 227.7.7.7
  Interfaces using the classmap:
    FastEthernet3/1

The following is sample output from the show ip igmp groups command. In this example, the command is issued to confirm that the group entries defined in the class map named static (the class map configured in the Configuring IGMP Static Group Support Example section) were added to the IGMP cache.

Router# show ip igmp groups
IGMP Connected Group Membership
Group Address    Interface                Uptime    Expires   Last Reporter
232.7.7.7        FastEthernet3/1          00:00:09  stopped   0.0.0.0
232.7.7.9        FastEthernet3/1          00:00:09  stopped   0.0.0.0
232.7.7.8        FastEthernet3/1          00:00:09  stopped   0.0.0.0
227.7.7.7        FastEthernet3/1          00:00:09  stopped   0.0.0.0
227.7.7.9        FastEthernet3/1          00:00:09  stopped   0.0.0.0
227.7.7.8        FastEthernet3/1          00:00:09  stopped   0.0.0.0
224.0.1.40       FastEthernet3/2          01:44:50  00:02:09  10.2.2.5
224.0.1.40       Loopback0                01:45:22  00:02:32  10.3.3.4

The following is sample output from the show ip mroutecommand. In this example, the command is issued to confirm that the group entries defined in the class map named static (the class map configured in the Configuring IGMP Static Group Support Example section) were added to the mroute table.

Router# show ip mroute
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
       L - Local, P - Pruned, R - RP-bit set, F - Register flag,
       T - SPT-bit set, J - Join SPT, M - MSDP created entry,
       X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
       U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel
       Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
 Timers: Uptime/Expires
 Interface state: Interface, Next-Hop or VCD, State/Mode
(10.1.1.10, 232.7.7.7), 00:00:17/00:02:42, flags: sTI
  Incoming interface: FastEthernet3/2, RPF nbr 10.2.2.5
  Outgoing interface list:
    FastEthernet3/1, Forward/Sparse-Dense, 00:00:17/00:02:42
(10.1.1.10, 232.7.7.9), 00:00:17/00:02:42, flags: sTI
  Incoming interface: FastEthernet3/2, RPF nbr 10.2.2.5
  Outgoing interface list:
    FastEthernet3/1, Forward/Sparse-Dense, 00:00:17/00:02:42
(10.1.1.10, 232.7.7.8), 00:00:18/00:02:41, flags: sTI
  Incoming interface: FastEthernet3/2, RPF nbr 10.2.2.5
  Outgoing interface list:
    FastEthernet3/1, Forward/Sparse-Dense, 00:00:18/00:02:41
(*, 227.7.7.7), 00:00:18/00:02:41, RP 10.2.2.6, flags: SJC
  Incoming interface: FastEthernet3/2, RPF nbr 10.2.2.6
  Outgoing interface list:
    FastEthernet3/1, Forward/Sparse-Dense, 00:00:18/00:02:41
(*, 227.7.7.9), 00:00:18/00:02:41, RP 10.2.2.6, flags: SJC
  Incoming interface: FastEthernet3/2, RPF nbr 10.2.2.6
  Outgoing interface list:
    FastEthernet3/1, Forward/Sparse-Dense, 00:00:18/00:02:41
(*, 227.7.7.8), 00:00:18/00:02:41, RP 10.2.2.6, flags: SJC
  Incoming interface: FastEthernet3/2, RPF nbr 10.2.2.6
  Outgoing interface list:
    FastEthernet3/1, Forward/Sparse-Dense, 00:00:18/00:02:41
(*, 224.0.1.40), 00:01:40/00:02:23, RP 10.2.2.6, flags: SJCL
  Incoming interface: FastEthernet3/2, RPF nbr 10.2.2.6
  Outgoing interface list:
    Loopback0, Forward/Sparse-Dense, 00:01:40/00:02:23