D-Link DGS-6600-48TS Configuration Guide - Page 129

Volume 3-Layer 2 Configurations / Chapter 14-Spanning Tree Protocol (STP) Configuration • Port State • BPDU • Priority Vector • Algorithms Basic Terminology Chapter Overview Bridge ID Each network node participating in the switching domain has a unique bridge ID. The bridge ID is formed by the bridge priority and MAC address of the network node. The bridge priority is a 16-bit integer. A lower bridge ID value represents a better priority. Port ID Each port of the network node participating in the switching domain has a port ID, which is formed by an 8-bit port priority and an 8-bit port number. Link Path Cost Each port has a path cost value representing the media speed. Root Bridge The bridge with the lowest bridge ID is elected as the root bridge. Root Path Cost Represents the link cost of the shortest distance between the local Switch and the root bridge. Designated Bridge The closest bridge on each LAN segment that can forward all traffic originating from the LAN segment to the root bridge. Timers Maximum Age The message age of the configuration BPDU should be less than the maximum time a BPDU takes to be processed. Hello Time The interval that a designated port will wait between the periodic transmission of each configuration message. Forward Delay The delay used by STP to transition from the listening to learning and learning to forwarding states. DGS-6600 Configuration Guide 129