Administrator Guide

Layer 2 Switching Commands 746
show spanning-tree
Use the show spanning-tree command to display the spanning-tree
configuration.
Syntax
show spanning-tree [{gigabitethernet unit/slot/port | port-channel port-
channel-number | tengigabitethernet unit/slot/port | fortygigabitethernet
unit/slot/port}] [instance instance-id]
show spanning-tree [detail] [active | blockedports] | [instance instance-id]
show spanning-tree mst-configuration
show spanning-tree {uplinkfast | backbonefast}
• detail—Displays detailed information.
• active—Displays active ports only.
• blockedports—Displays blocked ports only.
• mst-configuration—Displays the MST configuration identifier.
• instance -id —ID of the spanning tree instance.
• uplinkfast—Displays Direct Link Rapid Convergence information.
• backbonefast—Displays Indirect Link Rapid Convergence information.
Default Configuration
This command has no default configuration.
Command Mode
Privileged Exec mode, Global Configuration mode and all Configuration
submodes
User Guidelines
This command has no user guidelines.
Command History
Modified in version 6.5 firmware.