Brocade 6910 Ethernet Access Switch Configuration Guide (Supporting R2.2.0.0) User Manual
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Brocade 6910 Ethernet Access Switch Configuration Guide
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Spanning Tree Commands
Default Setting
None
Command Mode
Privileged Exec
Command Usage
•
Use the show spanning-tree command with no parameters to display the spanning tree
configuration for the switch for the Common Spanning Tree (CST) and for every interface in the
tree.
•
Use the show spanning-tree interface command to display the spanning tree configuration for
an interface within the Common Spanning Tree (CST).
•
Use the show spanning-tree mst command to display the spanning tree configuration for all
instances within the Multiple Spanning Tree (MST), including global settings and settings for
active interfaces.
•
Use the show spanning-tree mst instance-id command to display the spanning tree
configuration for an instance within the Multiple Spanning Tree (MST), including global settings
and settings for all interfaces.
•
For a description of the items displayed under “Spanning-tree information,” see
on page 789. For a description of the items displayed for specific
interfaces, see
“Displaying Interface Settings for STA”
Example
Console#show spanning-tree
Spanning Tree Information
---------------------------------------------------------------
Spanning Tree Mode : MSTP
Spanning Tree Enabled/Disabled : Enabled
Instance : 0
VLANs Configured : 1-4093
Priority : 32768
Bridge Hello Time (sec.) : 2
Bridge Max. Age (sec.) : 20
Bridge Forward Delay (sec.) : 15
Root Hello Time (sec.) : 2
Root Max. Age (sec.) : 20
Root Forward Delay (sec.) : 15
Max. Hops : 20
Remaining Hops : 20
Designated Root : 32768.0.0001ECF8D8C6
Current Root Port : 21
Current Root Cost : 100000
Number of Topology Changes : 5
Last Topology Change Time (sec.): 11409
Transmission Limit : 3
Path Cost Method : Long
Flooding Behavior : To VLAN
Cisco Prestandard : Disabled
---------------------------------------------------------------
Eth 1/ 1 Information
---------------------------------------------------------------
Admin Status : Enabled
Role : Disabled
State : Discarding