203
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
interface
interface-type
interface-number
N/A
3.
Disable the port from
becoming a dynamic router
port.
mld-snooping router-port-deny
[
vlan vlan-list
]
By default, a port is allowed to
become a dynamic router port.
This configuration does not affect
the static router port configuration.
Enabling inner VLAN ID-based forwarding
Use this feature to enable a port to create and maintain MLD snooping entries based on the inner
VLAN IDs of the received double-tagged MLD packets.
To enable inner VLAN ID-based forwarding:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
interface
interface-type
interface-number
N/A
3.
Enable inner VLAN ID-based
forwarding.
mld-snooping cvid-forward
By default, inner VLAN ID-based
forwarding is disabled on a port.
The port performs outer VLAN
ID-based forwarding.
Configuring the MLD snooping querier
This section describes how to configure the MLD snooping querier.
Configuration prerequisites
Before you configure the MLD snooping querier, complete the following tasks:
•
Enable MLD snooping for the VLAN or VSI.
•
Determine the MLD general query interval.
•
Determine the maximum response time for MLD general queries.
Enabling the MLD snooping querier
This feature enables the device to periodically send MLD general queries to establish and maintain
multicast forwarding entries at the data link Layer. You can configure an MLD snooping querier on a
network without Layer 3 multicast devices.
Configuration restrictions and guidelines
When you enable the MLD snooping querier, follow these restrictions and guidelines:
•
Do not enable the MLD snooping querier on an IPv6 multicast network that runs MLD. An MLD
snooping querier does not participate in MLD querier elections. However, it might affect MLD
querier elections if it sends MLD general queries with a low source IPv6 address.