4000 Router Series IP Multicast Configuration Guide

ManualsBrandsHP ManualsNetwork HardwareHP MSR3024 TAA-compliant AC Router

To specify the IGMP snooping version for a VLAN in VLAN view:

Ste

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter VLAN view.

vlan vlan-id N/A

3. Specify the version of IGMP

snooping.

igmp-snooping version

version-number

The default setting is IGMPv2

snooping.

Setting the maximum number of IGMP snooping forwarding

entries

You can modify the maximum number of IGMP snooping forwarding entries. When the number of

forwarding entries on the device reaches the upper limit, the device does not automatically remove any

existing entries or create new entries until some entries time out or are removed. In this case, HP

recommends that you manually remove the excessive entries.

To set the maximum number of IGMP snooping forwarding entries:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter IGMP-snooping view.

igmp-snooping N/A

3. Set the maximum number of IGMP

snooping forwarding entries.

entry-limit limit

The default setting is

4294967295.

Configuring parameters for IGMP queries and responses

When a multicast listening host receives an IGMP query (general query or group-specific query), it starts

a delay timer for each multicast group that it has joined. This timer is initialized to a random value in the

range of 0 to the maximum response time advertised in the IGMP query message. When the timer value

decreases to 0, the host sends an IGMP report to the multicast group.

To speed up the response of hosts to IGMP queries and avoid simultaneous timer expirations causing

IGMP report traffic bursts, you must correctly set the maximum response time.

• The maximum response time for IGMP general queries is set by the max-response-time command.

• The maximum response time for IGMP group-specific queries is the same as the IGMP last-member

query interval, which is set by the last-member-query-interval command.

You can configure parameters for IGMP queries and responses either for the current VLAN in VLAN view

or globally for all VLANs in IGMP-snooping view. If the two configurations are made in both VLAN view

and IGMP-snooping view, the configuration made in VLAN view takes priority.

Configuring parameters for IGMP queries and responses globally

Ste

Command

Remarks

1. Enter system view.

system-view N/A