Users Guide

Layer 2 Switching Commands 820
User Guidelines
When configuring the switch in MSTP mode, be sure to configure the MST
region name. For multiple switches to become members of the same region,
the configuration name, the configuration revision and mapping of VLANs to
MSTIs must be identical.
Example
The following example sets the configuration revision to 1.
console(config)#spanning-tree mst configuration
console(config-mst)#revision 1
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.