H3C Technologies H3C S10500 Series Switches - Manual (Page 281)

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Configuring static ports
If all hosts attached to a port are interested in the IPv6 multicast data addressed to a particular IPv6
multicast group, configure the port as a static member port for that IPv6 multicast group.
You can configure a port of a switch to be a static router port, through which the switch can forward all
IPv6 multicast data that it received.
Follow these steps to configure static ports:
To do... Use the command... Remarks
Enter system view system-view —
Enter Layer 2 Ethernet interface
view, Layer 2 aggregate interface
view, or port group view
Enter Layer 2 Ethernet interface
view or Layer 2 aggregate
interface view:
interface interface-type
interface-number
Enter port group view:
port-group manual
port-group-name
Required
Use either command
Configure the port as a static
member port
mld-snooping static-group
ipv6-group-address [ source-ip
ipv6-source-address ] vlan vlan-id
Required
No static member ports exist by
default.
Configure the port as a static router
port mld-snooping static-router-port
vlan vlan-id
Required
No static router ports exist by
default.
NOTE:
•
A static member port does not respond to queries from the MLD querier; when you configure a port as
a static member port or cancel this configuration on the 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 use the
corresponding undo command.
Configuring simulated joining
Generally, a host that runs MLD can respond to MLD queries that the MLD querier sends. If a host fails to
respond, the multicast router deems that no member of this IPv6 multicast group exists on the network
segment, and removes the corresponding forwarding path.
To avoid this situation, you can enable simulated joining on a port of the switch. That is, you can
configure the port as a simulated member host for an IPv6 multicast group. When the simulated member
host receives an MLD query, it gives a response. Therefore, the switch can continue receiving IPv6
multicast data.
A simulated host acts like a real host in the following ways:
• When a port is configured as a simulated member host, the switch sends an unsolicited MLD report
through the port, and can respond to MLD general queries with MLD reports through the port.
• When the simulated joining function is disabled on a port, the switch sends an MLD done message
through that port.