Brocade FastIron Ethernet Switch IP Multicast Configuration Guide - Manual (Page 201)

Setting the query interval
You can define the frequency at which MLD query messages are sent. For example, if you want queries
to be sent every 50 seconds, enter a command such as the following.
device(config)# ipv6 mld query-interval 50
Syntax: [no] ipv6 mld query-interval seconds
The seconds variable specifies the MLD query interval in seconds. You can specify from 2 through 3600
seconds. The default value is 125 seconds.
To define the frequency at which MLD query messages are sent for a specified VRF, enter the following
commands.
device(config)# ipv6 router pim vrf blue
device(config-ipv6-pim-router-vrf-blue)# ipv6 mld query-interval 50
Syntax: [no] ipv6 router pim [ vrf vrf-name ]
The vrf parameter specifies the virtual routing instance (VRF) specified by the variable vrf-name .
Setting the last listener query interval
The Last Listener Query Interval is the Maximum Response Delay inserted into Multicast-Address-
Specific Queries sent in response to Done messages, and is also the amount of time between
Multicast- Address-Specific Query messages. When the device receives an MLDv1 leave message or
an MLDv2 state change report, it sends out a query and expects a response within the time specified by
this value. Using a lower value allows members to leave groups more quickly. You can set the last
listener query interval by entering a command such as the following.
device(config)# ipv6 mld llqi 5
Syntax: [no] ipv6 mld llqi seconds
The seconds variable sets the last listener query interval in seconds. You can specify from 1 through 25
seconds. The default is 1.
To set the last listener query interval for a specified VRF, enter the following commands.
device(config)# ipv6 router pim vrf blue
device(config-ipv6-pim-router-vrf-blue)# ipv6 mld llqi 5
Syntax: [no] ipv6 router pim [ vrf vrf-name ]
The vrf parameter specifies the virtual routing instance (VRF) specified by the variable vrf-name .
Setting the robustness
You can specify the number of times that the switch sends each MLD message from this interface. Use
a higher value to ensure high reliability from MLD. You can set the robustness by entering a command
such as the following.
device(config)# ipv6 mld robustness 3
Syntax: ipv6 mld robustness seconds
The seconds variable sets the MLD robustness in seconds. You can specify from 2 through 7 seconds.
The default is 2 seconds.
Setting the query interval
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