Installation manual

4-217
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spanning-tree
This command enables the Spanning Tree Algorithm globally for the switch. Use the no
form to disable it.
Syntax
[no] spanning-tree
Default Setting
Spanning tree is enabled.
Command Mode
Global Configuration
Command Usage
The Spanning Tree Algorithm (STA) can be used to detect and disable network
loops, and to provide backup links between switches, bridges or routers. This
allows the switch to interact with other bridging devices (that is, an STA-compliant
switch, bridge or router) in your network to ensure that only one route exists
between any two stations on the network, and provide backup links which
automatically take over when a primary link goes down.
Example
This example shows how to enable the Spanning Tree Algorithm for the switch:
spanning-tree mst cost Configures the path cost of an instance in the MST IC 4-232
spanning-tree mst
port-priority
Configures the priority of an instance in the MST IC 4-233
spanning-tree
protocol-migration
Re-checks the appropriate BPDU format PE 4-234
show spanning-tree Shows spanning tree configuration for the common
spanning tree (i.e., overall bridge), a selected interface, or
an instance within the multiple spanning tree
PE 4-234
show spanning-tree mst
configuration
Shows the multiple spanning tree configuration PE 4-236
Console(config)#spanning-tree
Console(config)#
Table 4-60 Spanning Tree Commands (Continued)
Command Function Mode Page