2-437
Catalyst 2350 Switch Command Reference
OL-19055-01
Chapter 2 Catalyst 2350 Cisco IOS Commands
spanning-tree vlan
This example shows how to set spanning-tree max-age to 30 seconds for VLAN 20:
Switch(config)#
spanning-tree vlan 20 max-age 30
This example shows how to reset the
max-age
parameter to the default value for spanning-tree
instance 100 and 105 to 108:
Switch(config)#
no spanning-tree vlan 100, 105-108 max-age
This example shows how to set the spanning-tree priority to 8192 for VLAN 20:
Switch(config)#
spanning-tree vlan 20 priority 8192
This example shows how to configure the switch as the root switch for VLAN 10 with a network
diameter of 4:
Switch(config)#
spanning-tree vlan 10 root primary diameter 4
This example shows how to configure the switch as the secondary root switch for VLAN 10 with a
network diameter of 4:
Switch(config)#
spanning-tree vlan 10 root secondary diameter 4
You can verify your settings by entering the
show spanning-tree vlan
vlan-id
privileged EXEC
command.
Related Commands
Command
Description
show spanning-tree
vlan
Displays spanning-tree information.
spanning-tree cost
Sets the path cost for spanning-tree calculations.
spanning-tree guard
Enables the root guard or the loop guard feature for all the VLANs
associated with the selected interface.
spanning-tree port-priority
Sets an interface priority.
spanning-tree portfast (global
configuration)
Globally enables the BPDU filtering or the BPDU guard feature on
Port Fast-enabled interfaces or enables the Port Fast feature on all
nontrunking interfaces.
spanning-tree portfast
(interface configuration)
Enables the Port Fast feature on an interface in all its associated
VLANs.
spanning-tree uplinkfast
Enables the UplinkFast feature, which accelerates the choice of a
new root port.