Cisco CISCO1401 Software Guide - Page 111

STP Configuration Examples, Root Bridge Without VLANs

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Chapter 8 Configuring Spanning Tree Protocol Configuring STP Features Command Step 3 bridge-group number Step 4 no bridge-group number spanning-disabled Step 5 exit Step 6 bridge number protocol ieee Step 7 bridge number priority priority Step 8 Step 9 Step 10 end show spanning-tree bridge copy running-config startup-config Purpose Assign the interface to a bridge group. You can number your bridge groups from 1 to 255. 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. Return to global configuration mode. Enable STP for the bridge group. You must enable STP on each bridge group that you create with bridge-group commands. (Optional) Assign a priority to a bridge group. The lower the priority, the more likely it is that the bridge becomes the spanning-tree root. Return to privileged EXEC mode. Verify your entries. (Optional) Save your entries in the configuration file. STP Configuration Examples These configuration examples show how to enable STP on root and non-root bridges with and without VLANs: • Root Bridge Without VLANs, page 8-9 • Non-Root Bridge Without VLANs, page 8-10 • Root Bridge with VLANs, page 8-11 • Non-Root Bridge with VLANs, page 8-12 Root Bridge Without VLANs This example shows the configuration of a root bridge with no VLANs configured and with STP enabled: hostname master-bridge-south ip subnet-zero ! bridge irb ! interface Dot11Radio0 no ip address no ip route-cache ! ssid tsunami authentication open guest-mode ! speed basic-6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0 rts threshold 2312 station-role root no cdp enable infrastructure-client bridge-group 1 ! OL-4059-01 Cisco Aironet 1400 Series Wireless Bridges Software Configuration Guide 8-9

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8-9
Cisco Aironet 1400 Series Wireless Bridges Software Configuration Guide
OL-4059-01
Chapter 8
Configuring Spanning Tree Protocol
Configuring STP Features
STP Configuration Examples
These configuration examples show how to enable STP on root and non-root bridges with and without
VLANs:
Root Bridge Without VLANs, page 8-9
Non-Root Bridge Without VLANs, page 8-10
Root Bridge with VLANs, page 8-11
Non-Root Bridge with VLANs, page 8-12
Root Bridge Without VLANs
This example shows the configuration of a root bridge with no VLANs configured and with STP enabled:
hostname master-bridge-south
ip subnet-zero
!
bridge irb
!
interface Dot11Radio0
no ip address
no ip route-cache
!
ssid tsunami
authentication open
guest-mode
!
speed basic-6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0
rts threshold 2312
station-role root
no cdp enable
infrastructure-client
bridge-group 1
!
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.
Step 5
exit
Return to global configuration mode.
Step 6
bridge
number
protocol ieee
Enable STP for the bridge group. You must enable STP on each
bridge group that you create with
bridge-group
commands.
Step 7
bridge
number
priority
priority
(Optional) Assign a priority to a bridge group. The lower the
priority, the more likely it is that the bridge becomes the
spanning-tree root.
Step 8
end
Return to privileged EXEC mode.
Step 9
show spanning-tree bridge
Verify your entries.
Step 10
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose