Configuring A Multicast Group Filter; Adjusting Igmp Performance; Enabling Igmp Fast-Leave Processing - HP 5920 series Configuration Manual

Configuring a multicast group filter

To restrict the hosts on the network attached to an interface from joining certain multicast groups, you can
specify an ACL on the interface as a packet filter so that the interface maintains only the multicast groups
that match the criteria.
To configure a multicast group filter:
Step
1. Enter system view.
2. Enter interface view.
3. Configure a multicast group
filter.
NOTE:
If you configure the interface as a static member interface for a multicast group or a multicast source and
group, this configuration is not effective for the multicast group or the multicast source and group.

Adjusting IGMP performance

Before adjusting IGMP performance, complete the following tasks:
Configure any unicast routing protocol so that all devices are interoperable at the network layer.
•
• Configure basic IGMP functions.

Enabling IGMP fast-leave processing

In some applications, such as ADSL dial-up networking, only one multicast receiver host is attached to an
interface of the IGMP querier. To allow fast response to the leave messages of the host when it switches
frequently from one multicast group to another, you can enable fast-leave processing on the IGMP
querier.
With IGMP fast-leave processing enabled, after receiving an IGMP leave message from a host, the IGMP
querier directly sends a leave notification to the upstream without sending IGMP group-specific queries
or IGMP group-and-source-specific queries. This reduces leave latency and preserves the network
bandwidth.
The IGMP fast-leave processing configuration is effective only if the device is running IGMPv2 or
IGMPv3.
To enable IGMP fast-leave processing:
Step
1. Enter system view.
2. Enter interface view.
Command
system-view
interface interface-type
interface-number
igmp group-policy acl-number
[ version-number ]
Command
system-view
interface interface-type
interface-number
55
Remarks
N/A
N/A
By default, no multicast group filter
is configured on any interface.
Hosts attached to an interface can
join any multicast group.
Remarks
N/A
N/A