Configuration Guide User guide

1470 FastIron Configuration Guide
53-1002494-02
IGMP snooping configuration
Configuring the global IGMP mode
To globally set the IGMP mode to active, enter the following command.
Brocade(config)# ip multicast active
Syntax: [no] ip multicast [active | passive]
If you do not enter either active or passive, the passive mode is assumed.
Configuring the IGMP mode for a VLAN
If you specify an IGMP mode for a VLAN, it overrides the global setting.
To set the IGMP mode for VLAN 20 to active, enter the following commands.
Brocade(config)# vlan 20
Brocade(config-vlan-20)# multicast active
Syntax: [no] multicast active | passive
Configuring the IGMP version
Use the procedures in this section to specify the IGMP version.
Configuring the global IGMP version
To globally specify IGMP V2 or IGMP V3, refer to “Enabling IGMP snooping globally on the device”
on page 1469.
Configuring the IGMP version for a VLAN
You can specify the IGMP version for a VLAN. For example, the following commands configure VLAN
20 to use IGMP V3.
Brocade(config)# vlan 20
Brocade(config-vlan-20)# multicast version 3
Syntax: [no] multicast version 2 | 3
If no IGMP version is specified, then the globally-configured IGMP version is used. If an IGMP
version is specified for individual ports, those ports use that version, instead of the VLAN version.
Configuring the IGMP version for individual ports in a VLAN
You can specify the IGMP version for individual ports in a VLAN. For example, the following
commands configure ports 4, 5, and 6 to use IGMP V3. The other ports either use the IGMP version
specified with the multicast version command, or the globally-configured IGMP version.
Brocade(config)# vlan 20
Brocade(config-vlan-20)# multicast port-version 3 ethernet 2/4 to 2/6
Syntax: [no] multicast port-version 2 | 3 ethernet <port> [ethernet <port> | to <port>]
Specify the <port> variable in one of the following formats:
• FSX 800 and FSX 1600 chassis devices – <slotnum/portnum>
• FESX compact switches – <portnum>