H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – Multicast
H3C S7500 Series Ethernet Switches Chapter 6
IGMP Configuration
6-11
6.2.4 Configuring Router Ports to Join the Specified Multicast Group
Generally, the host running IGMP will respond to the IGMP query messages of the
multicast switch. If the host cannot respond for some reasons, the multicast switch may
think that there is no members of the multicast group in this network segment and then
remove the corresponding paths.
In order to avoid such cases, you must configure a port of the VLAN interface of the
switch as a router port to add it to the multicast group. When the port receives IGMP
query messages, the multicast switch will respond to it. As a result, the network
segment that the Layer 3 interfaces reside can continue to receive multicast packets.
Follow these steps to configure router ports to join the specified multicast group:
To do... Use the command... Remarks
Enter system view system-view —
Enable the multicast
routing protocol
multicast
routing-enable
Required
Enter VLAN interface view
interface Vlan-interface
interface-number
—
Enable IGMP on the
current interface
igmp enable
Required
IGMP is disabled on the
interface by default.
Configure router ports to
join a multicast group
igmp host-join
group-address port
interface-list
Optional
By default, the router port
does not join in any
multicast group.
Quit VLAN interface view.
quit
—
Enter Ethernet port view
interface interface-type
interface-number
—
Configure router ports to
join a multicast group
igmp host-join
group-address vlan
vlan-id
Optional
By default, the router port
does not join in any
multicast group.
6.2.5 Configuring IGMP Proxy
I. Configure IGMP Proxy
You can configure IGMP proxy to reduce the workload of configuration and
management of leaf networks without affecting the multicast connections of the leaf
network.