Configuring IGMP Snooping Querier 563
Configuring fast leave processing on a port or a group of ports
Follow these steps to configure fast leave processing on a port or a group of ports:
c
CAUTION: If fast leave processing is enabled on a port to which more than one
host is attached, when one host leaves a multicast group, the other hosts attached
to the port and interested in the same multicast group will fail to receive multicast
data for that group.
Configuring IGMP
Snooping Querier
Configuration
Prerequisites
Before configuring IGMP Snooping querier, complete the following task:
■ Enable IGMP Snooping in the VLAN.
Before configuring IGMP Snooping querier, prepare the following data:
■ IGMP general query interval,
■ IGMP last-member query interval,
■ Maximum response time to IGMP general queries,
■ Source address of IGMP general queries, and
■ 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 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
To do… Use the command… Remarks
Enter system view system-view -
Enter IGMP Snooping view igmp-snooping -
Enable fast leave processing fast-leave [ vlan vlan-list ] Required
Disabled by default
To do… Use the command… Remarks
Enter system view system-view -
Enter the
corresponding view
Enter Ethernet port
view
interface interface-type
interface-number
Use either command
Enter port group
view
port-group { manual
port-group-name |
aggregation agg-id }
Enable fast leave processing igmp-snooping
fast-leave [ vlan
vlan-list ]
Required
Disabled by default
To Next Page
Loading...
