Enabling Igmp Fast-Leave Processing; Configuring Source Specific Multicast (Ssm) Mapping - Cisco 7604 Configuration Manual
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Configuring IGMP Snooping
To configure the interval for the IGMP snooping queries sent by the router, perform this task:
Command
Step 1
Router(config)# interface vlan vlan_ID
Step 2
Router(config-if)# ip igmp snooping
last-member-query-interval interval
Router(config-if)# no ip igmp snooping last
This example shows how to configure the IGMP snooping query interval:
Router(config-if)# ip igmp snooping last-member-query-interval 200
Router(config-if)# exit
Router# show ip igmp interface vlan 200 | include last
IGMP snooping last member query interval on this interface is 200 ms
Enabling IGMP Fast-Leave Processing
To enable IGMP fast-leave processing in a VLAN, perform this task:
Command
Step 1
Router(config)# interface vlan vlan_ID
Step 2
Router(config-if)# ip igmp snooping fast-leave
Router(config-if)# no ip igmp snooping fast-leave
This example shows how to enable IGMP fast-leave processing on the VLAN 200 interface and verify
the configuration:
Router# interface vlan 200
Router(config-if)# ip igmp snooping fast-leave
Configuring fast leave on vlan 200
Router(config-if)# end
Router# show ip igmp interface vlan 200 | include fast-leave
IGMP snooping fast-leave is enabled on this interface
Router(config-if)#
Configuring Source Specific Multicast (SSM) Mapping
Note
•
•
To configure SSM mapping, refer to this publication:
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gtssmma.html
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
30-12
Release 12.2(18)SXD3 and later releases support SSM mapping.
Do not configure SSM mapping in a VLAN that supports IGMPv3 multicast receivers.
Chapter 30
Configuring IGMP Snooping for IPv4 Multicast Traffic
Purpose
Selects a VLAN interface.
Configures the interval for the IGMP snooping queries
sent by the router. Default is 1 second. Valid range is 100
to 999 milliseconds.
Reverts to the default value.
Purpose
Selects a VLAN interface.
Enables IGMP fast-leave processing in the VLAN.
Disables IGMP fast-leave processing in the VLAN.
OL-4266-08
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