Dell PowerConnect J-EX4200-24T Software Manual page 1471

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