Enabling MLD snooping querier election
About MLD snooping querier election
To avoid traffic interruption caused by the failure of a single querier in a VLAN or VSI, configure multiple queriers in the VLAN or VSI and enable querier election. When the elected querier fails, the device starts a new querier election to ensure multicast forwarding. The mechanism for MLD snooping querier election is the same as that for MLD querier election. For more information about MLD querier election, see "Configuring MLD."
Prerequisites
Before you enable MLD snooping querier election, you must complete the following tasks:
Enable the MLD snooping querier for a VLAN or VSI. For more information about enabling the MLD snooping querier, see "Enabling the MLD snooping querier."
Configure the source IPv6 address for MLD general queries as an IPv6 address different from :: and the local querier IPv6 address. An MLD snooping querier performs querier election only if the source IPv6 address of a received MLD general query is not :: or its own IPv6 address.
Make sure the candidate MLD snooping queriers run the same MLD snooping version. To specify the MLD snooping version, use the mld-snooping version command.
Enabling MLD snooping querier election for a VLAN
Enter system view.
system-view
Enter VLAN view.
vlan vlan-id
Enable MLD snooping querier election for the VLAN.
mld-snooping querier-election
By default, MLD snooping querier election is disabled for a VLAN.
Enabling MLD snooping querier election for a VSI
Enter system view.
system-view
Enter VSI view.
vsi vsi-name
Enable MLD snooping querier election for the VSI.
mld-snooping querier-election
By default, MLD snooping querier election is disabled for a VSI.