H3C S3610-28P Operation Manual page 724

Operation Manual – Multicast Protocol
H3C S3610&S5510 Series Ethernet Switches
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 heard, 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.
Follow these steps to configure simulated joining:
Enter system view
Enter the
corresponding
view
Configure simulated joining
Note:
Each simulated host is equivalent to an independent host. For example, when
receiving an MLD query, the simulated host corresponding to each configuration
responds respectively.
The MLD version of a simulated host is the same as the MLD Snooping version
current running on the device.
Unlike a static member port, a port configured as a simulated member host will age
out like a dynamic member port.
3.4.5 Configuring Fast Leave Processing
The fast leave processing feature allows the switch to process MLD done messages in
a fast way. With the fast leave processing feature enabled, when receiving an MLD
done message on a port, the switch immediately removes that port from the outgoing
port list of the forwarding table entry for the indicated IPv6 multicast group. Then, when
To do...
Enter Ethernet
port view
Enter port
group view
3-11
Chapter 3 MLD Snooping Configuration
Use the command...
system-view
interface interface-type
interface-number
port-group { manual
port-group-name | aggregation
agg-id }
mld-snooping host-join
ipv6-group-address [ source-ip
ipv6-source-address ] vlan
vlan-id
Remarks
—
Required
Use either
command
Required
Disabled by
default