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PowerConnect B-Series FCX Configuration Guide 895
53-1002266-01
Configuring MLD snooping
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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 a command such as the following.
PowerConnect(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 following command configures the device to use MLDv2.
PowerConnect(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.
You can configure report control to rate-limit report forwarding for the same group to no more than
once per 10 seconds. This rate limiting does not apply to the first report answering a group-specific
query.
NOTE
This feature applies to MLDv1 only. The leave messages are not rate limited.
MLDv1 membership reports for the same group from different clients are considered to be the
same, and are rate-limited. This alleviates the report storm caused by multiple clients answering
the upstream router query. To enable report-control, use a command similar to the following.
PowerConnect(config)#ipv6 mld-snooping report-control
Syntax: [no] ipv6 mld-snooping report-control