Disabling Spanning Tree - Cisco Catalyst 2960-XR Configuration Manual

Disabling Spanning Tree

Disabling Spanning Tree
Spanning tree is enabled by default on VLAN 1 and on all newly created VLANs up to the spanning-tree
limit. Disable spanning tree only if you are sure there are no loops in the network topology.
Caution When spanning tree is disabled and loops are present in the topology, excessive traffic and indefinite
packet duplication can drastically reduce network performance.
This procedure is optional.
Beginning in privileged EXEC mode, follow these steps to disable a spanning tree:
SUMMARY STEPS
1. configure terminal
2. no spanning-tree vlan vlan-id
3. end
DETAILED STEPS
Command or Action
Step 1
configure terminal
Example:
Switch# configure terminal
Step 2 no spanning-tree vlan vlan-id
Example:
Switch(config)# no spanning-tree vlan 300
Step 3 end
Example:
Switch(config)# end
Related Topics
Supported Spanning-Tree Instances, on page 23
Default Spanning-Tree Configuration, on page 25
Catalyst 2960-XR Switch Layer 2 Configuration Guide, Cisco IOS Release 15.0(2)EX1
28
Configuring Spanning Tree Protocol
Purpose
Enters the global configuration mode.
For vlan-id, the range is 1 to 4094.
Returns to privileged EXEC mode.
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