Configuring A Port As A Simulated Group Member - 3Com WX3000 Series Operation Manual

In VLAN view
Follow these steps to configure a static router port in VLAN view:
To do...
Enter system view
Enter VLAN view
Configure a specified port as a
static router port

Configuring a Port as a Simulated Group Member

Generally, hosts running IGMP respond to the IGMP query messages of the multicast device. If hosts
fail to respond for some reason, the multicast device may consider that there is no member of the
multicast group on the local subnet and remove the corresponding path.
To avoid this from happening, you can configure a port of the VLAN of the device as a multicast group
member. When the port receives IGMP query messages, the multicast device will respond. As a result,
the port of the VLAN can continue to receive multicast traffic.
Through this configuration, the following functions can be implemented:
When an Ethernet port is configured as a simulated member host, the device sends an IGMP
report through this port. Meanwhile, the device sends the same IGMP report to itself and
establishes a corresponding IGMP entry based on this report.
When receiving an IGMP general query, the simulated host responds with an IGMP report.
Meanwhile, the device sends the same IGMP report to itself to ensure that the IGMP entry does not
age out.
When the simulated joining function is disabled on an Ethernet port, the simulated host sends an
IGMP leave message.
Therefore, to ensure that IGMP entries will not age out, the port must receive IGMP general queries
periodically.
Follow these steps to configure a port as a simulated group member:
To do...
Enter system view
Enter Ethernet port view
Configure the current port as a
simulated multicast group
member
Use the command...
system-view
vlan vlan-id
multicast static-router-port
interface-type interface-number
Use the command...
system-view
interface interface-type
interface-number
igmp host-join group-address
[source-ip source-address ]
vlan vlan-id
2-12
Remarks
—
—
Required
By default, no static router port
is configured.
Remarks
—
—
Optional
Simulated joining is disabled by
default.