Last Member Query Interval; Explicit Tracking; Configure A Static Group - Dell Force10 C150 Configuration Manual

Last Member Query Interval

The Querier sends a Multicast-Address-Specific Query upon receiving a Done message to ascertain
whether there are any remain receivers for a group. The Last Listener Query Interval is the Maximum
Response Delay for a Multicast-Address-Specific Query, and also the amount of time between
Multicast-Address-Specific Query retransmissions. Lowering the Last Listener Query Interval reduces the
time to detect that there are no remaining receivers for a group, and so can reduce the amount of
unnecessarily forwarded traffic.
Task
Adjust the last-member query interval.

Explicit Tracking

If the Querier does not receive a response to a Multicast-Address-Specific Query, it sends another. Then,
after no response, it removes the group entry from the group membership table. You can configure the
system to remove specified groups immediately after receiving a Leave message to reduce leave latency.
Task
Configure the system to remove a group
after receiving immediately after receiving
a Leave message.
Note: If snooping is enabled on the
VLAN, this command has no effect. In
this case, enable
.
explicit tracking

Configure a Static Group

A group is entered into the group membership table if it has at least one member. Host memberships
expire. When all memberships for a group expire, the group is removed from the group membership table.
Hosts keep their memberships active by responding to queries. You can configure a group entry to never be
removed regardless of membership by creating a static entry in the table.
Task
Create a static entry in the group
membership table.
610 | Multicast Listener Discovery
ipv6 mld snooping
Command Syntax
ipv6 mld static-group
Command Syntax
ipv6 mld last-member-query-interval
Default: 1000 milliseconds
Command Syntax
ipv6 mld explicit-tracking
Command Mode
INTERFACE
Command Mode
INTERFACE
Command Mode
INTERFACE