3Com Switch 8800 Advanced Software V5 Configuration Guide

546 CHAPTER 41: IGMP SNOOPING CONFIGURATION
n
A Switch 8800 still forwards unknown multicast data to other router ports in the
VLAN even if enabled to drop unknown multicast data.
Configuring IGMP
Snooping Port
Functions
Configuration
Prerequisites
Before configuring IGMP Snooping port functions, complete the following task:
■ Enable IGMP Snooping in the VLAN or enable IGMP on the desired VLAN
interface
Before configuring IGMP Snooping port functions, consider the following points:
■ Multicast group and multicast source addresses
■ Whether to configure simulated joining
■ Whether to enable the fast leave feature
■ Router port aging time
■ Member port aging time
Configuring Static Ports If the host attached to a port is interested in the multicast data addressed to a
particular multicast group or the multicast data that a particular multicast source
sends to a particular group, you can configure this port to be a group-specific or
source-and-group-specific static member port (static (*, G) or (S, G) joining).
In a network where the topology structure is unlikely to change, you can configure
ports of a switch to be static router ports. The switch forwards multicast traffic to
static router ports as well as to member ports.
Follow these steps to configure static ports:
To do... Use the command... Remarks
Enter system view system-view -
Enter IGMP Snooping view igmp-snooping -
Enable the function of
dropping unknown multicast
data
drop-unknown Required
Disabled by default
To do... Use the command... Remarks
Enter system view system-view -
Enter the
corresponding view
Enter Ethernet
interface view
interface
interface-type
interface-number
Use either command
Enter interface group
view
port-group { manual
port-group-name |
aggregation agg-id }