Configuring Igmp Snooping Querier; Prerequisites; Enabling Igmp Snooping Querier - HP A6600 Configuration Manual

To solve these problems, you can disable that router port from changing into a dynamic router port after
receiving an IGMP general query or a PIM Hello message; thus, network security and control over
multicast users are enhanced.
This configuration does not affect the static router port configuration.
To do...
1. Enter system view.
2. Enter Ethernet interface/Layer
2 aggregate interface view or
port group view.
3. Disable the port or group of
ports from changing into
dynamic router ports.

Configuring IGMP snooping querier

Prerequisites

Before configuring IGMP snooping querier, complete the following tasks:
Enable IGMP snooping in the VLAN
•
Determine the IGMP general query interval
•
Determine the IGMP last-member query interval
•
Determine the maximum response time to 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 running IGMP, a multicast router or Layer 3 multicast switch is responsible for
sending IGMP general queries, so that all Layer 3 multicast devices can establish and maintain multicast
forwarding entries, thus to forward multicast traffic correctly at the network layer. This router or Layer 3
switch is called an IGMP querier.
However, a Layer 2 multicast switch does not support IGMP, and therefore cannot send general queries
by default. By enabling IGMP snooping on a Layer 2 switch in a VLAN where multicast traffic needs to be
Layer-2 switched only and no multicast routers are present, the Layer 2 switch will act as the IGMP
snooping querier to send IGMP queries, thus allowing multicast forwarding entries to be established and
maintained at the data link layer.
To do...
1. Enter system view.
2. Enter VLAN view.
Use the command...
system-view
interface interface-type
interface-number
port-group manual
port-group-name
igmp-snooping router-port-deny
[ vlan vlan-list ]
Use the command...
system-view
vlan vlan-id
23
Remarks
—
Required.
Use either approach.
Required.
By default, the port or group of
ports can change into dynamic
router ports.
Remarks
—
—