This article was first published here
Madhuri C Cisco Employee Options 04-12-2011 12:38 AM – edited 11-18-2020 02:53 AM
Introduction
Autonomous AP and Bridge Basic Configuration Template
Configuration Example
Configuring an IOS AP
1. Creating an SSID
AP#
Configure terminal
Dot11 ssid <ssid_name>
Authentication open
Guest-mode <— To broadcast the SSID
2. Configuring AP as a DHCP server
AP#
Configure terminal
Ip dhcp excluded-address <—List of IP addresses to be excluded>
Ip dhcp pool <pool name>
Network <network id> <mask>
Default-router <IP address>
3. Configuring radio interface
Configure terminal
Int dot11radio0 or Intdot11radio1
Ssid <ssid_name> <— Map the SSID to radio interface
Station-role root
bridge-group
no shut
4. Configuring Ethernet interface
interface FastEthernet0
bridge-group 1
5. Configure the BVI interface
interface BVI1
ip address <ip address> <mask>
6.
6. Specify the default gateway
ip default-gateway <ip_address>
7. Configuring radio sub interfaces
If there are multiple vlans(For ex,vlans 1,2,3 in this case), configure one of the vlan to be native depending on your network/switchport config and map it to bridge-group 1
Conf t
interface Dot11Radio0.1
encapsulation dot1Q 1 native
bridge-group 1
interface Dot11Radio0.2
encapsulation dot1Q 2
bridge-group 2
interface Dot11Radio0.3
encapsulation dot1Q 3
bridge-group 3
8. Configuring fa sub interfaces for multiple vlans
interface fa0.1
encapsulation dot1Q 1 native
bridge-group 1
interface fa0.2
encapsulation dot1Q 2
bridge-group 2
interface fa0.3
encapsulation dot1Q 2
bridge-group 3
9. Enabling mbssid if multiple ssids needs to be broadcast
Interface dot11 0
Mbssid
Dot11 ssid <ssid_name>
Mbssid guest-mode
10. SSID and vlan mapping for multiplevlans/ssids
Conf t
Dot11 ssid <ssid1>
Vlan 1
Dot11 ssid <ssid2>
Vlan 2
11. Speed, channel and power settings
Conf t
Int dot11 0
Speed range or Speed throughput
Power local max
Or
Powerlocal cck max
Powerlocal ofdm max
Channel <number> or <least-congested>
12. Enabling http and https to access GUI
Conft
ip http server
ip http secure-server
ip http authentication local
13. WEP configuration
Configuration if there are multiplevlans and if SSIDs are mapped to vlans:
Conf t
interface Dot11Radio0
encryption vlan <id> mode wepmandatory
encryption vlan <id> key<slot> size 128bit 0 <encryption key> transmit-key
or
Configuration if there is a single vlans and if SSID is notmapped to vlan explicitly”
Conf t
interface Dot11Radio0
encryptionmode wep mandatory
encryption key <slot> size 40bit 0 <encryption key> transmit-key
14. WPA1 configuration
Configure terminal
interface dot11Radio 0
encryption vlan <id> modeciphers tkip
(or )
encryption mode ciphers tkip <— Configuration if SSID is not mapped to vlans explicitly
exit
dot11 ssid <ssid_name>
authentication open
authentication key-management wpa
wpa-psk ascii <Enter pre-shared_key>
15. WPA2 configuration
Configure terminal
interface dot11Radio 0
encryption vlan <id> mode ciphers aes-ccm
(or)
encryption mode ciphers aes-ccm <— Configuraton if SSID is not mapped to vlans explicitly
exit
dot11 ssid <ssid_name>
authentication open
authentication key-management wpa version 2
wpa-psk ascii <Enter pre-shared_key>
16. Configuration on switchport
switchport mode trunk
switchport trunk encapsulation dot1q
switchport trunk native vlan 1
switchport trunk allowed vlan 1,2,3
Bridge Configuration
Unlike APs, bridges would have a single SSID mapped to native VLAN for bridging. The SSID, Encryption, Authentication on root and non root bridges should match.
1. Configuration Root bridge
dot11 ssid bridging
vlan 1
infrastructure-ssid <— Use infrastructure-ssid optional ifwireless clients are to be connected too
int dot11 0
station-role root bridge
or
station-role root bridge wireless-clients <— Bridging and allow client association too
interfaceDot11Radio0.1
encapsulation dot1Q 1 native
bridge-group 1
interfaceDot11Radio0.2
encapsulation dot1Q 2
bridge-group 2
interfaceFastEthernet0.1
encapsulation dot1Q 1 native
bridge-group 1
interfaceFastEthernet0.2
encapsulation dot1Q 2
bridge-group 2
2. Configurationon Non Root bridge
dot11 ssid bridging
vlan 1
infrastructure-ssid
int dot11 0
station-role non-root bridge
(or)
station-role non-root bridge wireless-clients <— Bridging and allow client association too
interfaceDot11Radio0.1
encapsulation dot1Q 1 native
bridge-group 1
interfaceDot11Radio0.2
encapsulation dot1Q 2
bridge-group 2
interfaceFastEthernet0.1
encapsulation dot1Q 1 native
bridge-group 1
interfaceFastEthernet0.2
encapsulation dot1Q 2
bridge-group 2
Useful commands
– ‘Show dot11 associations all’ to check details of associated clients.
– ‘Show controllers dot11 0’ to check the current channel,current and available power values, number of mbssids.
– ‘Dot11 dot11radio 0 carrier busy and show dot11 carrier busy’ shows the interference percentage for every channel which can be used to select the channel with least interference.
Useful links
Complete configuration guide of AP
Configuration Examples and TechNotes