Configuration Guide User guide

FastIron Configuration Guide 1637
53-1002494-02
MLD snooping configuration
Omitting both the active and passive keywords is the same as entering ipv6 mld-snooping passive.
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 the ipv6 mld-snooping age-interval <num> command.
Brocade(config)#ipv6 mld-snooping age-interval 280
Syntax: [no] ipv6 mld-snooping age-interval <interval>
The <interval> parameter specifies the aging time. You can specify a value from 20 – 7200
seconds. The default is 140 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
device sends group membership queries. When multiple queriers connect together, all queriers
should be configured with the same interval.
To modify the query interval, enter the ipv6 mld-snooping query-interval <num> command.
Brocade(config)#ipv6 mld-snooping query-interval 120
Syntax: [no] ipv6 mld-snooping query-interval <interval>
The <interval> parameter specifies the interval between queries. You can specify a value from 10 –
3600 seconds. The default is 60 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 ipv6 mld-snooping version <num> command configures the
device to use MLDv2.
Brocade(config)#ipv6 mld-snooping version 2
Syntax: [no] ipv6 mld-snooping 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.
Configuring report control
When a device is in passive mode, it forwards reports and leave messages from clients to the
upstream router ports that are receiving queries.