HP 6125XLG - Configuring IGMP Snooping Policies; Configuring a Multicast Group Filter

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it immediately removes that port from the forwarding entry for the multicast group. Then, when the switch
receives IGMP group specific queries for that multicast group, it does not forward them to that port.
When you enable the IGMP snooping fast-leave processing feature, follow these guidelines:
• In a VLAN, you can enable IGMP snooping fast-leave processing on ports that have only one
receiver host attached. If a port has multiple hosts attached, do not enable IGMP snooping
fast-leave processing on this port. Otherwise, other receiver hosts attached to this port in the same
multicast group cannot receive the multicast data destined to this group.
• You can enable IGMP snooping fast-leave processing either for the current port in interface view or
globally for all ports in IGMP-snooping view. If the configurations are made both in interface view
and IGMP-snooping view, the configuration made in interface view takes priority.
Enabling IGMP snooping fast-leave processing globally
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter IGMP-snooping view.
igmp-snooping N/A
3. Enable IGMP snooping
fast-leave processing globally.
fast-leave [ vlan vlan-list ]
By default, fast-leave processing is
disabled.
Enabling IGMP snooping fast-leave processing on a port
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
interface interface-type
interface-number
N/A
3. Enable IGMP snooping
fast-leave processing on the
port.
igmp-snooping fast-leave [ vlan
vlan-list ]
By default, fast-leave processing is
disabled.
Configuring IGMP snooping policies
Before you configure IGMP snooping policies, complete the following tasks:
• Enable IGMP snooping for the VLAN.
• Determine the ACL used as the multicast group filter.
• Determine the maximum number of multicast groups that a port can join.
Configuring a multicast group filter
When you configure a multicast group filter, follow these guidelines:
• This configuration is effective on the multicast groups that a port dynamically joins. If you configure
the port as a static member port for a multicast group, this configuration is not effective on the
multicast group.