Configuring Simulated Joining - HP 4800G 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.
If MLD is enabled on the virtual interface of a VLAN on a switch that supports both MLD Snooping
and MLD and you want a port in that VLAN to be a static member port for an IPv6 multicast group or
an IPv6 multicast source and group, in addition to configuring the port as a static member port, you
need to use the mld static-group command to configure the VLAN interface to be a static member
of the IPv6 multicast group or source and group. For details of the mld static-group command,
refer to MLD Commands in the IP Multicast Volume.
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.
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
1-10
Remarks
—
Required
Use either approach
Required
No static member ports by
default
Required
No static router ports by default