3Com Switch 4200G Configuration Guide

30
ROUTING PORT JOIN TO MULTICAST
GROUP CONFIGURATION
Routing Port Join to
Multicast Group
Configuration
Introduction Normally, an IGMP host responds to IGMP query messages of the multicast router. In
case of response failure, the multicast router may consider that there is no multicast
member on this network segment and cancel the corresponding path.
To avoid such a problem, you can configure an interface of the switch as a multicast
group member. When the interface receives IGMP query packets, it will respond, thus
ensuring that the network segment of the interface can normally receive multicast
packets.
Configuring Routing
Port to Join to Multicast
Group
By default, a routing port does not join any multicast group. Note that the Ethernet
port must belong to the VLAN; otherwise, your configuration cannot take effect.
Table 231 Configure routing port to join to multicast group
Operation Command Description
Enter system view system-view —
Enter Ethernet port
view
interface interface-type interface-number —
Configure a routing
port to join to the
specified multicast
group
igmp host-join group-address vlan vlan-id Optional
group-address is the IP
address of a multicast
group.