R3303-HP HSR6800 Routers IP Multicast Configuration Guide
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• When you disable the simulated joining function on the port, the router sends an IGMP leave
message through the port.
To configure a port as a simulated member host:
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, or
enter port group view.
• Enter Layer 2 Ethernet interface view or
Layer 2 aggregate interface view:
interface interface-type
interface-number
• Enter port group view:
port-group manual port-group-name
Use either command.
3. Configure the port as a
simulated member host.
igmp-snooping host-join group-address
[ source-ip source-address ] vlan vlan-id
Not configured by default.
NOTE:
Unlike a static member port, a port configured as a simulated member host ages out like a dynamic
member port.
Enabling IGMP snooping fast-leave processing
The fast-leave processing feature enables the router to process IGMP leave messages quickly. With this
feature enabled, when the router receives an IGMP leave message on a port, it immediately removes that
port from the forwarding entry for the multicast group specified in the message. Then, when the router
receives IGMP group-specific queries for that multicast group, it does not forward them to that port.
On a port that has only one host attached, you can enable fast-leave processing to save bandwidth and
resources. However, on a port that has multiple hosts attached, you should not enable fast-leave
processing if you have enabled dropping unknown multicast data globally or for the port. Otherwise, if
a host on the port leaves a multicast group, the other hosts attached to the port in the same multicast
group cannot receive the multicast data for the group.
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.
fast-leave [ vlan vlan-list ] Disabled by default.
Enabling IGMP snooping fast-leave processing on a port
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A