Cisco 3200 Series, Руководство по настройке программного обеспечения

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Spanning Tree Protocol in a Wireless Environment
Configuring STP Features
8
Book Title
Configuring STP Features
These sections include spanning-tree configuration information:
•
Default STP Configuration, page 8
• Configuring STP Settings, page 8
•
STP Configuration Examples, page 9
Default STP Configuration
STP is disabled by default. Table 2 lists the default STP settings when you enable STP.
The radio and Ethernet interfaces and the native VLAN on the bridge are assigned to bridge group 1 by
default. When you enable STP and assign a priority on bridge group 1, STP is enabled on the radio and
Ethernet interfaces and on the primary VLAN, and those interfaces adopt the priority assigned to bridge
group 1. You can create bridge groups for sub-interfaces and assign different STP settings to those bridge
groups.
Configuring STP Settings
Beginning in privileged EXEC mode, follow these steps to configure STP on the bridge:
Table 2 Default STP Values When STP is Enabled
Setting Default Value
Bridge priority 32768
Bridge max age 20
Bridge hello time 2
Bridge forward delay 15
Ethernet port path cost 19
Ethernet port priority 128
Radio port path cost 33
Radio port priority 128
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2 interface interfacenumber Enter interface configuration mode for radio or Ethernet
interfaces or sub-interfaces.
Step 3 bridge-group number Assign the interface to a bridge group. You can number
your bridge groups from 1 to 255.
Step 4 no bridge-group number spanning-disabled Counteract the command that automatically disables STP
for a bridge group. STP is enabled on the interface when
you enter the
bridge n protocol ieee command.