Brocade FastIron Ethernet Switch IP Multicast Configuration Guide - Manual (Page 54)

Disabling error and warning messages
Error or warning messages are printed when the device runs out of software resources or when it
receives packets with the wrong checksum or groups. These messages are rate limited. You can turn
off these messages by entering the ipv6 multicast verbose-off command.
device(config)#ipv6 multicast verbose-off
Syntax: [no] ipv6 multicast verbose-off
Configuring the MLD mode for a VLAN
You can configure a VLAN for either the active or passive (default) MLD mode. The VLAN setting
overrides the global setting:
• Active - In active MLD mode, the device actively sends out MLD queries to identify IPv6 multicast
groups on the network, and makes entries in the MLD table based on the group membership
reports it receives from the network.
• Passive - In passive MLD mode, the device forwards reports to router ports that receive queries.
MLD snooping in the passive mode does not send queries. However, it does forward queries to
the entire VLAN.
To set the MLD mode for VLAN 20 to active, enter the following commands.
device(config)#vlan 20
device(config-vlan-20)#multicst6 active
Syntax: [no] multicast6 [active | passive]
The default mode is passive.
Disabling MLD snooping for the VLAN
When MLD snooping is enabled globally, you can disable it for a specific VLAN. For example, the
following commands disable MLD snooping for VLAN 20. This setting overrides the global setting for
VLAN 20.
device(config)#vlan 20
device(config-vlan-20)#multicast6 disable-mld-snoop
Syntax: [no] multicast6 disable-mld-snoop
Configuring the MLD version for the VLAN
You can specify the MLD version for a VLAN. For example, the following commands configure VLAN
20 to use MLDv2.
device(config)#vlan 20
device(config-vlan-20)#multicast6 version 2
Syntax: [no] multicast6 version [1 | 2]
When no MLD version is specified, the globally-configured MLD version is used. If an MLD version is
specified for individual ports, these ports use that version, instead of the version specified for the
VLAN.
Disabling error and warning messages
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