Brocade Communications Systems IPMC5000PEF manual Modifying the age interval

Modifying the age interval

Omitting both the active and passive keywords is the same as entering ipv6 multicast passive .

NOTE

The ipv6 mld-snooping command is replaced by the ipv6 multicast command; the mld-snooping command is replaced by the multicast6 command.

Modifying the age interval

When the device receives a group membership report, it makes an entry in the MLD group table for the group in the report. The age interval specifies how long the entry can remain in the table without the device receiving another group membership report. When multiple devices connect together, all devices should be configured with the same age interval. The age interval should be at least twice that of the query interval, so that missing one report will not stop traffic. For a non-querier, the query interval should equal that of the querier.

To modify the age interval, enter a command such as the following.

device(config)#ipv6 multicast age-interval 280

Syntax:[no] ipv6 multicast age-interval interval

The interval parameter specifies the aging time. You can specify a value from 20 to 7200 seconds. The default is 260 seconds.

Modifying the query interval (active MLD snooping mode only)

If the MLD mode is set to active, you can modify the query interval, which specifies how often the Brocade device sends group membership queries. By default, queries are sent every 60 seconds. When multiple queriers connect together, all queriers should be configured with the same interval.

To modify the query interval, enter the ipv6 multicast query-intervalinterval command.

Device(config)#ipv6 multicast query-interval 120

Syntax: [no] ipv6 multicast query-interval interval

The interval parameter specifies the interval between queries. You can specify a value from 10 to 3600 seconds. The default is 125 seconds.

Configuring the global MLD version

The default version is MLDv1. You can specify the global MLD version on the device as either MLDv1 or MLDv2. For example, the following command configures the device to use MLDv2.

device(config)#ipv6 multicast version 2

Syntax: [no] ipv6 multicast version {1 2}

You can also specify the MLD version for individual VLANs, or individual ports within VLANs. If no MLD version is specified for a VLAN, then the globally configured MLD version is used. If an MLD version is specified for individual ports in a VLAN, those ports use that version instead of the version specified for the VLAN or the globally specified version. The default is MLDv1.

50	FastIron Ethernet Switch IP Multicast Configuration Guide
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