Configuring Simulated Joining - 3Com 4210G Series Configuration Manual

Follow these steps to configure static ports:
To do...
Enter system view
Enter Ethernet port/Layer 2
aggregate port view or port
group view
Configure the port(s) as static
member port(s)
Configure the port(s) as static
router port(s)
An IPv6 static (S, G) join takes effect only if a valid IPv6 multicast source address is specified and
MLD Snooping version 2 is currently running.
A static member port does not respond to queries from the MLD querier; when static (*, G) or (S,
G) joining is enabled or disabled on a port, the port does not send an unsolicited MLD report or an
MLD done message.
Static member ports and static router ports never age out. To remove such a port, you need to use
the corresponding undo command.

Configuring Simulated Joining

Generally, a host running MLD responds to MLD queries from the MLD querier. 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 enable simulated joining on a port of the switch,
namely configure the port as a simulated member host for an IPv6 multicast group. When an MLD
query is received, simulated host gives a response. Thus, the switch can continue receiving IPv6
multicast data.
A simulated host acts like a real host, as follows:
When a port is configured as a simulated member host, the switch sends an unsolicited MLD
report through that port.
After a port is configured as a simulated member host, the switch responds to MLD general
queries by sending MLD reports through that port.
When the simulated joining function is disabled on a port, the switch sends an MLD done
message through that port.
Use the command...
system-view
interface interface-type
interface-number
port-group manual
port-group-name
mld-snooping static-group
ipv6-group-address
[ source-ip
ipv6-source-address ] vlan
vlan-id
mld-snooping
static-router-port vlan vlan-id
4-9
Remarks
—
Required
Use either approach
Required
No static member ports by
default
Required
No static router ports by default