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Configuring fast leave processing on a port or a group of ports
Follow these steps to configure fast leave processing on a port or a group of ports:
To do...
Use the command...
Remarks
Enter system view
system-view
—
Enter Ethernet interface/Layer 2
aggregate interface view or port
group view
interface
interface-type
interface-number
Required
Use either approach
port-group
manual
port-group-name
Enable fast leave processing
mld-snooping fast-leave
[
vlan
vlan-list
]
Required
Disabled by default
Disabling a port or a group of ports from changing into
dynamic router ports
At present, the following problems exist in a multicast access network:
•
After receiving an MLD general query or IPv6 PIM Hello message from a connected host, a
switch port becomes a dynamic router port. Before its timer expires, this dynamic router port will
receive all multicast packets within the VLAN it belongs to and forward then to the host, thus
affecting normal multicast reception of the host.
•
In addition, the MLD general query and IPv6 PIM Hello message sent from the host affects the
multicast routing protocol state on Layer 3 devices, such as the MLD querier or DR election,
and might further cause network interruption.
To solve these problems, disable that switch port from changing into a dynamic router port upon
receiving an MLD general query or IPv6 PIM Hello message; thus, network security and control over
multicast users are enhanced.
Follow these steps to disable a port or a group of ports from changing into dynamic router ports:
To do...
Use the command...
Remarks
Enter system view
system-view
—
Enter Ethernet interface/Layer
2 aggregate interface view or
port group view
interface
interface-type
interface-number
Required
Use either approach
port-group
manual
port-group-name
Disable the port or group of
ports from changing into
dynamic router ports
mld-snooping router-port-deny
[
vlan
vlan-list
]
Required
By default, the port or group
of ports can change into
dynamic router ports.
NOTE:
This configuration does not affect the static router port configuration.
Configuring MLD snooping querier
Configuration prerequisites
Before you configure MLD snooping querier, complete the following tasks:
•
Enable MLD snooping in the VLAN