Enabling The Function Of Simulating Member Hosts - H3C S5500-SI Series Manual

Operation Manual – Multicast Protocol
H3C S5500-SI Series Ethernet Switches
Note:
When you configure or remove a port as a static member port of an IPv6 multicast
group, the port will not initiate an MLD report or an MLD done message.
Static member ports and static router ports never age out. To delete such a port, you
need to use the corresponding command.

2.4.3 Enabling the Function of Simulating Member Hosts

Generally, a host running MLD responds to MLD queries from a multicast router. If a
host fails to respond due to some reasons, the multicast router will deem that no
member of this IPv6 multicast group exists on the network segment, and therefore will
remove the corresponding forwarding path.
To avoid this situation from happening, you can configure a port of the switch as a
member of the IPv6 multicast group (namely, enable the function of simulating a
member host on the port). When an MLD query arrives, that member port will give a
response. As a result, the switch can continue receive IPv6 multicast data.
Through this configuration, the following functions can be implemented:
When the function of simulating member hosts is enabled on an Ethernet port, the
simulated host sends an MLD report.
When receiving an MLD general query, the simulated host responds with an MLD
report just like a real host.
When the function of simulating member hosts is disabled on an Ethernet port, the
simulated host sends an MLD done message.
Follow these steps to enable the function of simulating member hosts:
Enter system view
Enter
correspondin
g view
Enable the function of simulating
a member host of an IPv6
multicast group
To do...
Enter Ethernet
por t view
the
Enter port group
view
Chapter 2 MLD Snooping Configuration
Use the command...
system-view
interface interface-type
interface-number
port-group {
port-group-name | aggregation
agg-id }
mld-snooping
ipv6-group-address vlan vlan-id
2-9
Remarks
—
Use either
manual
command
Required
host-join
Disabled by
default