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Bridge ID Definition: Bridge ID is a unique identifier used in spanning tree protocol (STP) to determine the hierarchy of bridges in a network, with the lower Bridge ID indicating higher priority.
Bridge ID: A Bridge ID, also known as Bridge Identifier, is a unique identifier used in network spanning tree protocols (STP) to prevent loops in bridged networks. The Bridge ID consists of a Bridge Priority (cost assigned to a bridge) and a System ID Extension (MAC address of the bridge). The Bridge ID is essential for bridge selection and root bridge election processes within a network.