Configuring 802.1P Precedence For Mld Messages - 3Com S7906E Configuration Manual

To address this situation, you can enable the IPv6 multicast group replacement function on the switch or
certain ports. When the number of IPv6 multicast groups a switch or a port has joined exceeds the limit.
If the IPv6 multicast group replacement is enabled, the newly joined IPv6 multicast group
automatically replaces an existing IPv6 multicast group with the lowest IPv6 address.
If the IPv6 multicast group replacement is not enabled, new MLD reports will be automatically
discarded.
Configuring IPv6 multicast group replacement globally
Follow these steps to configure IPv6 multicast group replacement globally:
To do...
Enter system view
Enter MLD snooping view
Enable IPv6 multicast group
replacement
Configuring IPv6 multicast group replacement on a port or a group of ports
Follow these steps to configure IPv6 multicast group replacement on a port or a group of ports:
To do...
Enter system view
Enter Ethernet port/ONU
port/Layer 2 aggregate
interface view or port group
view
Enable IPv6 multicast group
replacement
Be sure to configure the maximum number of IPv6 multicast groups allowed on a port (refer to
Configuring Maximum Multicast Groups that Can Be Joined on a
group replacement. Otherwise, the IPv6 multicast group replacement functionality will not take effect.

Configuring 802.1p Precedence for MLD Messages

You can change 802.1p precedence of MLD messages so that they can be assigned higher forwarding
priority when congestion occurs on their outgoing ports.
Configuring 802.1p precedence for MLD messages globally
Follow these steps to configure 802.1p precedence for MLD messages globally:
Use the command...
system-view
mld-snooping
overflow-replace [ vlan
vlan-list ]
Use the command...
system-view
interface interface-type
interface-number
port-group manual
port-group-name
mld-snooping
overflow-replace [ vlan
vlan-list ]
1-23
Remarks
—
—
Required
Disabled by default
Remarks
—
Required
Use either approach
Required
Disabled by default
Port) before enabling IPv6 multicast