System information

BSR 64000 Configuration and Management Guide
8-18
slot is the module slot number.
interface is the interface number.
2. Use the ip igmp access-group command in Interface Configuration mode to filter
multicast groups that are permitted on the interface:
MOT(config-if)#ip igmp access-group <n>
where:
n is the access list-number from 1 to 99.
Changing the IGMP Version
The BSR uses IGMP Version 2 by default, which allows the IGMP query time-out and
the maximum query response time features. All hosts connected to an interface must
support the same version of IGMP. If hosts connected to a particular interface only
support IGMP Version 1, IGMP Version 1 must be selected for the interface.
Use the ip igmp version 1 command in Interface Configuration mode to change the
version of IGMP the BSR to IGMP Version 1, as shown below:
MOT(config-if)#ip igmp version 1
If you need to return to IGMP Version 2, use the ip igmp version 2 command in
Interface Configuration mode to return the version of IGMP on the BSR to IGMP
Version 2, as shown below:
MOT(config-if)#ip igmp version 2
Modifying the IGMP Host-Query Message Interval
When the BSR is configured for multicast routing, it can periodically send IGMP
host-query messages to connected networks in order to refresh multicast group
member information or discover new multicast group members. These messages are
sent to the all-systems group address of 224.0.0.1 with a time-to-live (TTL) of 1.
The BSR uses the highest IP address for its multicast network and is responsible for
sending IGMP host-query messages to all hosts on the subnetwork. The BSR sends
IGMP host-query messages every 60 seconds to keep the IGMP overhead low on
hosts and networks connected to the BSR by default.