Allied Telesis AT-DC2552XS - Manual (Page 346)

Chapter 14: STP Commands
346 Section II: Layer 2 Switching
Role Displays the port role. The options are:
 Disabled
 Alternate
 Backup
 Root
 Designated
 Loop Guard
State Displays the state of the port. The options are:
 Disabled
 Discarding
 Learning
 Forwarding
Designated Path
Cost Displays the path cost to the root bridge that is
notified by the designated port.
Configured Path Cost Displays the path cost assigned to the port.
Designated Port Id Displays the designated port ID for spanning
tree protocol.
Priority Displays the port priority of the port.
Designated Bridge Displays the bridge ID of the designated bridge.
Message Age Displays the time that it takes to transmit a
message from the root bridge, The time
depends upon the distance to the root bridge.
Max Age Displays the maximum aging time for the root
bridge.
Hello Time Displays the hello time of the root bridge.
Forward Delay Displays the forward delay time of the root
bridge.
Forward Timer Displays the value of the forward timer.
Msg Age Timer Displays the time that a message from the root
bridge expires.
Hello Timer Displays the value of the hello timer.
topo change timer Displays the time between a topology change
occurred and the time it is recognized.
Table 58. SHOW SPANNING-TREE Command for STP & RSTP
Field Description