R3102-R3103-HP 6600/HSR6600 Routers IP Multicast Configuration Guide

Table Of Contents
24
Ste
p
Command
Remarks
2. Enter 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. Disable the port from
becoming a dynamic router
port.
igmp-snooping router-port-deny
[ vlan vlan-list ]
By default, a port can become a
dynamic router port.
This configuration does not affect
the static router port configuration.
Configuring IGMP snooping querier
This section describes how to configure IGMP snooping querier.
Configuration prerequisites
Before you configure IGMP snooping querier, complete the following tasks:
Enable IGMP snooping in the VLAN.
Determine the interval for sending IGMP general queries.
Determine the IGMP last-member query interval.
Determine the maximum response delay for IGMP general queries.
Determine the source address of IGMP general queries.
Determine the source address of IGMP group-specific queries.
Enabling IGMP snooping querier
In an IP multicast network that runs IGMP, a Layer 3 multicast device sends IGMP queries. This allows all
Layer 3 multicast devices to establish and maintain multicast forwarding entries for forwarding multicast
traffic correctly at the network layer. This Layer 3 multicast device is called the "IGMP querier".
A Layer 2 multicast device does not support IGMP, and therefore cannot send general queries by default.
When you configure an IGMP snooping querier on a Layer 2 multicast device in a VLAN where multicast
traffic is switched only at Layer 2 and no multicast routers are present, the Layer 2 multicast device sends
IGMP queries, so that multicast forwarding entries can be established and maintained at the data link
layer.
It is meaningless to configure an IGMP snooping querier in a multicast network that runs IGMP. Although
an IGMP snooping querier does not take part in IGMP querier elections, it might affect IGMP querier
elections because it sends IGMP general queries with a low source IP address. For more information
about IGMP querier, see "Configuring IGMP."
To enable IGMP snooping querier in a VLAN:
Ste
p
Command
Remarks
1. Enter system view. system-view N/A