Dell PowerConnect J-8216 Software Guide for JUNOS version 10.3 - Page 1471

Chapter 69: Operational Mode Commands for Spanning-Tree Protocols Table 180: show spanning-tree bridge Output Fields (continued) Field Name Field Description Enabled protocol Spanning-tree protocol type enabled. Root ID Bridge ID of the elected spanning tree root bridge. The bridge ID consists of a configurable bridge priority and the MAC address of the bridge. Root cost Calculated cost to reach the root bridge from the bridge where the command is entered. Root port Interface that is the current elected root port for this bridge. CIST regional root Bridge ID of the elected MSTP regional root bridge. CIST internal root cost Calculated cost to reach the regional root bridge from the bridge where the command is entered. Hello time Configured number of seconds between transmissions of configuration BPDUs. Maximum age Maximum age of received protocol BPDUs. Forward delay Configured time an STP bridge port remains in the listening and learning states before transitioning to the forwarding state. Hop count Configured maximum number of hops a BPDU can be forwarded in the MSTP region. Message age Number of seconds elapsed since the most recent BPDU was received. Number of topology changes Total number of STP topology changes detected since the switch last booted. Time since last topology change Number of seconds elapsed since the most recent topology change. Topology change initiator Interface name of the interface that received the topology change request. Topology change last Bridge ID of the bridge that requested the last topology change. recvd. from Bridge ID (Local) Locally configured bridge ID. The bridge ID consists of a configurable bridge priority and the MAC address of the bridge. Extended system ID Internally generated system identifier. MSTI regional root Bridge ID of the elected MSTP regional root bridge. Internal instance ID An internally generated identifier. 1399