Cisco Wireless LAN Controller Configuration Guide, Release 7.4
Configuring Failover Priority for Access Points
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Configuring Failover Priority for Access Points

Configuring Failover Priority for Access Points

Information About Configuring Failover Priority for Access Points

Each controller has a defined number of communication ports for access points. When multiple controllers with unused access point ports are deployed on the same network and one controller fails, the dropped access points automatically poll for unused controller ports and associate with them.

The following are some guidelines for configuring failover priority for access points:
  • You can configure your wireless network so that the backup controller recognizes a join request from a higher-priority access point and if necessary disassociates a lower-priority access point as a means to provide an available port.
  • Failover priority is not in effect during the regular operation of your wireless network. It takes effect only if there are more association requests after a controller failure than there are available backup controller ports.
  • To configure this feature, you must enable failover priority on your network and assign priorities to the individual access points.
  • By default, all access points are set to priority level 1, which is the lowest priority level. Therefore, you need to assign a priority level only to those access points that warrant a higher priority.

Configuring Failover Priority for Access Points (GUI)


    Step 1   Choose Wireless > Access Points > Global Configuration to open the Global Configuration page.
    Step 2   From the Global AP Failover Priority drop-down list, choose Enable to enable access point failover priority or choose Disable to disable this feature and turn off any access point priority assignments. The default value is Disable.
    Step 3   Click Apply to commit your changes.
    Step 4   Click Save Configuration to save your changes.
    Step 5   Choose Wireless > Access Points > All APs to open the All APs page.
    Step 6   Click the name of the access point for which you want to configure failover priority.
    Step 7   Choose the High Availability tab. The All APs > Details for (High Availability) page appears.
    Step 8   From the AP Failover Priority drop-down list, choose one of the following options to specify the priority of the access point:
    • Low—Assigns the access point to the level 1 priority, which is the lowest priority level. This is the default value.
    • Medium—Assigns the access point to the level 2 priority.
    • High—Assigns the access point to the level 3 priority.
    • Critical—Assigns the access point to the level 4 priority, which is the highest priority level.
    Step 9   Click Apply to commit your changes.
    Step 10   Click Save Configuration to save your changes.

    Configuring Failover Priority for Access Points (CLI)


      Step 1   Enable or disable access point failover priority by entering this command:

      config network ap-priority {enable | disable}

      Step 2   Specify the priority of an access point by entering this command:

      config ap priority {1 | 2 | 3 | 4} Cisco_AP

      where 1 is the lowest priority level and 4 is the highest priority level. The default value is 1.

      Step 3   Enter the save config command to save your changes.

      Viewing Failover Priority Settings (CLI)

      • Confirm whether access point failover priority is enabled on your network by entering this command: show network summary Information similar to the following appears:
        
        RF-Network Name............................. mrf
        Web Mode.................................... Enable
        Secure Web Mode............................. Enable
        Secure Web Mode Cipher-Option High.......... Disable
        Secure Shell (ssh).......................... Enable
        Telnet...................................... Enable
        Ethernet Multicast Mode..................... Disable
        Ethernet Broadcast Mode..................... Disable
        IGMP snooping............................... Disabled
        IGMP timeout................................ 60 seconds
        User Idle Timeout........................... 300 seconds
        ARP Idle Timeout............................ 300 seconds
        Cisco AP Default Master..................... Disable
        AP Join Priority......................... Enabled
        
...
        
      • See the failover priority for each access point by entering this command: show ap summary Information similar to the following appears:
        
        Number of APs.................................... 2
        Global AP User Name.............................. user
        Global AP Dot1x User Name........................ Not Configured
        
        AP Name  Slots  AP Model           Ethernet MAC       Location   Port Country Priority
        -------  -----  ------------------ -----------------  ---------  ---- ------- -------
        ap:1252  2      AIR-LAP1252AG-A-K9 00:1b:d5:13:39:74  hallway 6  1    US      1
        ap:1121  1      AIR-LAP1121G-A-K9  00:1b:d5:a9:ad:08  reception  1    US      3
        

      To see the summary of a specific access point, you can specify the access point name. You can also use wildcard searches when filtering for access points.