CiscoBridgeDomain
An object with this syntax contains a bridge domain number which is used to distinguish between multiple bridge domains. A bridge domain represents a set of (logical) Ethernet segments which are interconnected by 802.1D bridges. 802.1Q allows for a maximum of 4095 VLANs within a bridge domain. Some devices can be connected to multiple bridge domains, e.g., routers with some of their interfaces in one bridge domain and other interfaces in other bridge domain. In such devices, the combination of bridge-domain-number and VLAN-id can be used to uniquely identify any VLAN across all interfaces.