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Creating Implicit Learning Domains

Multiple learning domains for a bridge domain or VPLS instance are implicitly created with the vlan-id all statement. This statement provides a mechanism to configure bridging for several VLANs with a minimal amount of configuration and switch resources.

The vlan-id all statement implicitly creates a learning domain for:

Each inner VLAN (normalized VLAN) of a logical interface with two VLAN tags.
Each normalized VLAN of a logical interface with one VLAN tag.

A learning domain is a MAC address database where the MAC addresses are added based on the normalized VLAN tags. The normalized VLAN tags associated with a learning domain are always carried within packets sent over VPLS virtual interfaces.

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