Configuring Igmp Snooping Querier; Configuration Prerequisites; Enabling Igmp Snooping Querier - HP MSR ASM Configuration Manual

To disable a port from becoming a dynamic router port:
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view, or
enter port group view.
3. Disable the port from
becoming a dynamic router
port.

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 multicast router or Layer 3 multicast switch 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 router or Layer 3 switch is called the
"IGMP querier".
However, a Layer 2 multicast switch does not support IGMP, and therefore cannot send general queries
by default. When you configure an IGMP snooping querier on a Layer 2 switch in a VLAN where
multicast traffic is switched only at Layer 2 and no multicast routers are present, the Layer 2 switch sends
IGMP queries, so that multicast forwarding entries can be established and maintained at the data link
layer.
Do not 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."
Command
system-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
igmp-snooping router-port-deny
[ vlan vlan-list ]
146
Remarks
N/A
Use either command.
By default, a port can become a
dynamic router port.
This configuration does not affect
the static router port configuration.