Configuring Spanning-Tree Features - Cisco Catalyst 3560-X Software Configuration Manual

Chapter 1 Configuring STP
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For more information about switch stacks, see

Configuring Spanning-Tree Features

These sections contain this configuration information:
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Default Spanning-Tree Configuration
Table 1-3
Table 1-3 Default Spanning-Tree Configuration
Feature
Enable state
Spanning-tree mode
Switch priority
Spanning-tree port priority (configurable on a per-interface basis)
Spanning-tree port cost (configurable on a per-interface basis)
Spanning-tree VLAN port priority (configurable on a per-VLAN basis)
OL-25303-03
If a neighboring switch external to the switch stack fails or is powered down, normal spanning-tree
processing occurs. Spanning-tree reconvergence might occur as a result of losing a switch in the
active topology.
If a new switch external to the switch stack is added to the network, normal spanning-tree processing
occurs. Spanning-tree reconvergence might occur as a result of adding a switch in the network.
Default Spanning-Tree Configuration, page 1-13
Spanning-Tree Configuration Guidelines, page 1-14
Changing the Spanning-Tree Mode., page 1-15
Disabling Spanning Tree, page 1-16
Configuring the Root Switch, page 1-17
Configuring a Secondary Root Switch, page 1-18
Configuring Port Priority, page 1-19
Configuring Path Cost, page 1-21
Configuring the Switch Priority of a VLAN, page 1-22
Configuring Spanning-Tree Timers, page 1-23
shows the default spanning-tree configuration.
Chapter 1, "Managing Switch Stacks."
(required)
(optional)
(optional)
(optional)
(optional)
(optional)
(optional)
(optional)
Default Setting
Enabled on VLAN 1.
For more information, see the
Spanning-Tree Instances" section on
page 1-10.
PVST+. (Rapid PVST+ and MSTP are
disabled.)
32768.
128.
1000 Mb/s: 4.
100 Mb/s: 19.
10 Mb/s: 100.
128.
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
Configuring Spanning-Tree Features
"Supported
1-13