Cisco Cisco IOS Software Release 12.2(18)SXF
IGMP Static Group Range Support
Information About IGMP Static Group Range Support
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Cisco IOS Release 12.2(18)SXF5
General Procedure for Configuring IGMP Group Range Support
To configure the IGMP Static Group Range Support feature, you would complete the following
procedure:
procedure:
1.
Create an IGMP static group class map (using the class-map type multicast-flows command).
2.
Define the group entries associated with the class map (using the group command).
3.
Attach the class map to an interface (using the ip igmp static-group command).
The class-map type multicast-flows command is used to enter multicast-flows class-map configuration
mode to create or modify an IGMP static group class map.
mode to create or modify an IGMP static group class map.
Unlike QoS class maps, which are defined by specifying numerous match criteria, IGMP static group
class maps are defined by specifying multicast groups entries (group addresses, group ranges, Source
Specific Multicast (SSM) channels, and SSM channel ranges). The following forms of the group
command are entered from multicast-flows class-map configuration mode to define group entries to
associate with the class map:
class maps are defined by specifying multicast groups entries (group addresses, group ranges, Source
Specific Multicast (SSM) channels, and SSM channel ranges). The following forms of the group
command are entered from multicast-flows class-map configuration mode to define group entries to
associate with the class map:
•
group group-address
Defines a group address to be associated with an IGMP static group class map.
•
group group-address to group-address
Defines a range of group addresses to be associated with an IGMP static group class map.
•
group group-address source source-address
Defines an SSM channel to be associated with an IGMP static group class map.
•
group group-address to group-address source source-address
Defines a range of SSM channels to be associated with an IGMP static group class map.
Unlike QoS class maps, IGMP static group range class maps are not configured in traffic policies.
Rather, the ip igmp static-group command has been extended to support IGMP static group ranges.
After creating an IGMP static group class map, you can attach the class map to interfaces using the ip
igmp static-group command with the class-map keyword and class-map-name argument. Once a class
map is attached to an interface, all group entries defined in the class map become statically connected
members on the interface and are added to the IGMP cache and IP multicast route (mroute) table.
Rather, the ip igmp static-group command has been extended to support IGMP static group ranges.
After creating an IGMP static group class map, you can attach the class map to interfaces using the ip
igmp static-group command with the class-map keyword and class-map-name argument. Once a class
map is attached to an interface, all group entries defined in the class map become statically connected
members on the interface and are added to the IGMP cache and IP multicast route (mroute) table.
Additional Guidelines for Configuring IGMP Static Group Range Support
•
Only one IGMP static group class map can be attached to an interface.
•
If an IGMP static group class map is modified (that is, if group entries are added to or removed from
the class map using the group command), the group entries that are added to or removed from the
IGMP static group class map are added to or deleted from the IGMP cache and the mroute table,
respectively.
the class map using the group command), the group entries that are added to or removed from the
IGMP static group class map are added to or deleted from the IGMP cache and the mroute table,
respectively.
•
If an IGMP static group class map is replaced on an interface by another class map using the ip igmp
static-group command, the group entries associated with old class map are removed, and the group
entries defined in the new class map are added to the IGMP cache and mroute table.
static-group command, the group entries associated with old class map are removed, and the group
entries defined in the new class map are added to the IGMP cache and mroute table.