DES-7200 Configuration Guide Chapter 9 MLD Snooping Configuration
9-10
sent from a host for leaving certain IPv 6 multicast group, a switch will directly
delete the port from the list of outgoing ports in the corresponding
forwarding-table.
If there is only one receiver connecting underneath the port on
the switch, you may enable Port Fast–leave to save band width and resource.
To configure the port fast–leave of MLD Snooping, run the following commands:
Command Function
DES-7200(config)# ipv6 mld
snooping fast-leave enable
Enable the fast-leave function for the
layer 2 multicast device, by default, this
function is disabled.
Use the no ipv6 mld snooping fast–leave enable command to disable the port
fast-leave function.
9.2.10 Configuring the Response Suppression for MLD Snooping
Membership Report Message
When receiving MLD membership report message from one IPv multicast listener,
layer-2 equipment will forward the message to directly connected layer 3
equipment.
Thus, when there exist in layer-2 equipment a number of listeners that
belong to one IPv 6 multicast group, directly connected layer-3 equipment will
receive the same MLD membership report message sent by these listeners.
After enabling MLD membership report message suppression function, layer-2
equipment will only forward to layer-3 equipment the first MLD membership report
message of one IPv 6 multicast group it receives within one query interval,
instead of keeping on forwarding to layer-3 equipment other MLD membership
report message from the same multicast group. In this way, message quantity will
be reduced in the network.
Run the following command to enable the response suppression for the layer-2
multicast device:
Command Function
DES-7200(config)# ipv6 mld
snooping suppression enable
Enable he response suppression for
the layer-2 multicast device, by default,
this function is disabled.
Use the no ipv6 mld snooping suppression enable command to disable the
suppression function.
9.2.11 Configuring Source Port Check
To configure the source port check function, run the following command:
Command Function
DES-7200(config)# ipv6 mld
snooping source-check port
Enable the source port check.
Use the no ipv6 mld snooping source-check port command to disable the
source port check function.
9.2.12 Configuring MLD Profiles
MLD Profiles are actually a number of group filters to provide support for following
functions of "multicast address range for SVGL mode application", "multicast data
area to be filtered by router port", "MLD Filtering range", etc.