Dell PowerConnect B-RX Configuration Manual page 654

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IGMP v3
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For example, two clients (Client A and Client B) belong to group1 but each is receiving traffic
streams from different sources. Client A receives a stream from (source_1, group1) and Client B
receives it from (source_2, group1). Now, if Client B leaves, the traffic stream ( source_2, group1)
will be stopped immediately. The show ip igmp group tracking command displays that clients in a
group that are being tracked.
If a client sends a leave message, the client is immediately removed from the group. If a client does
not send a report during the specified group membership time (the default is 140 seconds), that
client is removed from the tracking list.
To enable the tracking and fast leave feature, enter commands such as the following.
BigIron RX(config)# interface ve 13
BigIron RX(config-vif-13)# ip igmp tracking
Syntax: ip igmp tracking
NOTE
IGMPv2 tracking will not operate correctly if the system is reloaded.
NOTE
IGMP tracking is not supported when an IGMPv3-configured port is in the EXCLUDE mode.
Creating a static IGMP group
To configure a physical port to be a permanent (static) member of an IGMP group, enter the
following commands
BigIron RX(config)# interface ethernet 1/5
BigIron RX(config-if-e1000-1/5)# ip igmp static-group 224.10.1.1
Syntax: [no] ip igmp static-group <ip-address>
Enter the IP address of the static IGMP group for <ip-address>.
To configure a virtual port to be a permanent (static) member of an IGMP group, enter the following
commands
BigIron RX(config)# interface ve 10
BigIron RX(config-vif-10)# ip igmp static-group 224.10.1.1 ethernet 1/5
Syntax: [no] ip igmp static-group <ip-address> ethernet <slot-number>/<port-number>
Enter the IP address of the static IGMP group for <ip-address>.
Enter the ID of the physical port of the VLAN that will be a member of the group for ethernet
<slot-number>/<port-number>.
NOTE
IGMPv3 does not support static IGMP group members.
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If the interface, to which the client belongs, has IGMP V3 clients only. Therefore, all physical
ports on a virtual routing interface must have IGMP V3 enabled and no IGMP V1 or V2 clients
can be on the interface. (Although IGMP V3 can handle V1 and V2 clients, these two clients
cannot be on the interface in order for fast leave to take effect.)
No other client on the interface is receiving traffic from the group to which the client belongs.
Every group on the physical interface of a virtual routing interface keeps its own tracking
record. It can track by (source, group).
BigIron RX Series Configuration Guide
53-1001986-01