Enabling IPv6 multicast group replacement
This feature enables the switch to replace an existing IPv6 multicast group with a newly joined group when the number of groups exceeds the upper limit. This feature is typically used in the channel switching application. Without this feature, the switch discards MLD reports for new groups, and the user cannot change to the new channel.
Configuration restrictions and guidelines
When you enable IPv6 multicast group replacement, follow these restrictions and guidelines:
This configuration takes effect only on the multicast groups that the port joins dynamically.
You can enable this feature globally for all ports in MLD-snooping view or for a port in interface view. For a port, the port-specific configuration takes priority over the global configuration.
Enabling IPv6 multicast group replacement globally
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter MLD-snooping view. | mld-snooping | N/A |
3. Enable IPv6 multicast group replacement globally. | overflow-replace [ vlan vlan-list ] | By default, IPv6 multicast group replacement is disabled globally. |
Enabling IPv6 multicast group replacement on a port
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 IPv6 multicast group replacement on the port. | mld-snooping overflow-replace [ vlan vlan-list ] | By default, IPv6 multicast group replacement is disabled on a port. |