Cisco Wireless LAN Controller Configuration Guide, Release 7.4
Configuring AP Groups
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Configuring AP Groups

Configuring AP Groups

Prerequisites for Configuring AP Groups

The following are the prerequisites for creating access point groups on a controller:
  • The required access control list (ACL) must be defined on the router that serves the VLAN or subnet.
  • Multicast traffic is supported with access point group VLANs. However, if the client roams from one access point to another, the client might stop receiving multicast traffic, unless IGMP snooping is enabled.

AP Groups Supported on Controller Platforms

This table lists the AP groups supported on various controller platforms:
Controller Platform AP Groups Supported

Cisco 2500 Series Wireless Controller

50

Cisco 5500 Series Wireless Controller

500

Cisco Virtual Wireless Controller

200

Cisco 7500 Series Wireless Controller

6000

Cisco 8500 Series Wireless Controller

6000

Cisco Wireless Services Module 2

1000

Restrictions for Configuring Access Point Groups

  • Suppose that the interface mapping for a WLAN in the AP group table is the same as the WLAN interface. If the WLAN interface is changed, the interface mapping for the WLAN in the AP group table also changes to the new WLAN interface. Suppose that the interface mapping for a WLAN in the AP group table is different from the one defined for the WLAN. If the WLAN interface is changed, then the interface mapping for the WLAN in the AP group table does not change to the new WLAN interface.
  • If you clear the configuration on the controller, all of the access point groups disappear except for the default access point group “default-group,” which is created automatically.
  • The default access point group can have up to 16 WLANs associated with it. The WLAN IDs for the default access point group must be less than or equal to 16. If a WLAN with an ID greater than 16 is created in the default access point group, the WLAN SSID will not be broadcasted. All WLAN IDs in the default access point group must have an ID that is less than or equal to 16. WLANs with IDs greater than 16 can be assigned to custom access point groups.
  • The OEAP 600 Series access point supports a maximum of two WLANs and one remote LAN. If you have configured more than two WLANs and one remote LAN, you can assign the 600 Series access point to an AP group. The support for two WLANs and one remote LAN still applies to the AP group If the 600 Series OEAP is in the default group, the WLAN/remote LAN ids must be lower than 8.
  • All OfficeExtend access points should be in the same access point group, and that group should contain no more than 15 WLANs. A controller with OfficeExtend access points in an access point group publishes only up to 15 WLANs to each connected OfficeExtend access point because it reserves one WLAN for the personal SSID.

    Note


    A controller with OfficeExtend access points in an access point group publishes up to 15 WLANs to each connected OfficeExtend access point because it reserves one WLAN for the personal SSID.


Information About Access Point Groups

After you create up to 512 WLANs on the controller, you can selectively publish them (using access point groups) to different access points to better manage your wireless network. In a typical deployment, all users on a WLAN are mapped to a single interface on the controller. Therefore, all users that are associated with that WLAN are on the same subnet or VLAN. However, you can choose to distribute the load among several interfaces or to a group of users based on specific criteria such as individual departments (such as Marketing) by creating access point groups. Additionally, these access point groups can be configured in separate VLANs to simplify network administration.

Configuring Access Point Groups


    Step 1   Configure the appropriate dynamic interfaces and map them to the desired VLANs. For example, to implement the network described in the Information About Access Point Groups section, create dynamic interfaces for VLANs 61, 62, and 63 on the controller. See the Configuring Dynamic Interfaces section for information about how to configure dynamic interfaces.
    Step 2   Create the access point groups. See the Creating Access Point Groups section.
    Step 3   Create a RF profile. See the Creating an RF Profile section.
    Step 4   Assign access points to the appropriate access point groups. See the Creating Access Point Groups section.
    Step 5   Apply the RF profile on the AP groups. See the Applying RF Profile to AP Groups section.

    Creating Access Point Groups (GUI)


      Step 1   Choose WLANs > Advanced > AP Groups to open the AP Groups page.

      This page lists all the access point groups currently created on the controller. By default, all access points belong to the default access point group “default-group,” unless you assign them to other access point groups.

      Note   

      The controller creates a default access point group and automatically populates it with the first 16 WLANs (WLANs with IDs 1 through 16, or fewer if 16 WLANs are not configured). This default group cannot be modified (you cannot add WLANs to it nor delete WLANs from it). It is dynamically updated whenever the first 16 WLANs are added or deleted. If an access point does not belong to an access point group, it is assigned to the default group and uses the WLANs in that group. If an access point joins the controller with an undefined access point group name, the access point keeps its group name but uses the WLANs in the default-group access point group.

      Step 2   Click Add Group to create a new access point group. The Add New AP Group section appears at the top of the page.
      Step 3   In the AP Group Name text box, enter the group’s name.
      Step 4   In the Description text box, enter the group’s description.
      Step 5   In the NAS-ID text box, enter the network access server identifier for the AP group.
      Step 6   Click Add. The newly created access point group appears in the list of access point groups on the AP Groups page.
      Note   

      If you ever want to delete this group, hover your cursor over the blue drop-down arrow for the group and choose Remove. An error message appears if you try to delete an access point group that is used by at least one access point. Before deleting an access point group in controller software release 6.0 or later releases, move all access points in the group to another group. The access points are not moved to the default-group access point group as in previous releases.

      Step 7   Click the name of the group to edit this new group. The AP Groups > Edit (General) page appears.
      Step 8   Change the description of this access point group by entering the new text in the AP Group Description text box and click Apply.
      Step 9   Choose the WLANs tab to open the AP Groups > Edit (WLANs) page. This page lists the WLANs that are currently assigned to this access point group.
      Step 10   Click Add New to assign a WLAN to this access point group. The Add New section appears at the top of the page.
      Step 11   From the WLAN SSID drop-down list, choose the SSID of the WLAN.
      Step 12   From the Interface Name drop-down list, choose the interface to which you want to map the access point group. Choose the quarantine VLAN if you plan to enable network admission control (NAC) out-of-band support.
      Note   

      The interface name in the default-group access point group matches the WLAN interface.

      Step 13   Select the NAC State check box to enable NAC out-of-band support for this access point group. To disable NAC out-of-band support, leave the check box unselected, which is the default value.
      Step 14   Click Add to add this WLAN to the access point group. This WLAN appears in the list of WLANs that are assigned to this access point group.
      Note   

      If you ever want to remove this WLAN from the access point group, hover your cursor over the blue drop-down arrow for the WLAN and choose Remove.

      Step 15   Repeat Step 9 through Step 13 to add any additional WLANs to this access point group.
      Step 16   Choose the APs tab to assign access points to this access point group. The AP Groups > Edit (APs) page lists the access points that are currently assigned to this group as well as any access points that are available to be added to the group. If an access point is not currently assigned to a group, its group name appears as “default-group”.
      Step 17   Select the check box to the left of the access point name and click Add APs to add an access point to this access point group. The access point now appears in the list of access points currently in this access point group.
      Note   

      To select all of the available access points at once, select the AP Name check box. All of the access points are then selected.

      Note   

      If you ever want to remove an access point from the group, select the check box to the left of the access point name and click Remove APs. To select all of the access points at once, select the AP Name check box. All of the access points are then removed from this group.

      Note   

      If you ever want to change the access point group to which an access point belongs, choose Wireless > Access Points > All APs > ap_name > Advanced tab, choose the name of another access point group from the AP Group Name drop-down list, and click Apply.

      Step 18   In the 802.11u tab, do the following:
      1. Choose a HotSpot group that groups similar HotSpot venues.
      2. Choose a venue type that is based on the HotSpot venue group that you choose.
      3. To add a new venue, click Add New Venue and enter the language name that is used at the venue and the venue name that is associated with the basic service set (BSS). This name is used in cases where the SSID does not provide enough information about the venue.
      4. Select the operating class(es) for the AP group.
      5. Click Apply.
      Step 19   Click Save Configuration.

      Creating Access Point Groups (CLI)


        Step 1   Create an access point group by entering this command:
        config wlan apgroup add group_name
        Note   

        To delete an access point group, enter the config wlan apgroup delete group_name command. An error message appears if you try to delete an access point group that is used by at least one access point. Before deleting an access point group in controller software release 6.0 or later releases, move all access points in the group to another group. The access points are not moved to the default-group access point group as in previous releases. To see the access points in a group, enter the show wlan apgroups command. To move the access points to another group, enter the config ap group-name group_name Cisco_AP command.

        Step 2   Add a description to an access point group by entering this command:

        config wlan apgroup description group_name description

        Step 3   Assign a WLAN to an access point group by entering this command:

        config wlan apgroup interface-mapping add group_name wlan_id interface_name

        Note   

        To remove a WLAN from an access point group, enter the config wlan apgroup interface-mapping delete group_name wlan_id command.

        Step 4   Enable or disable NAC out-of-band support for this access point group by entering this command:

        config wlan apgroup nac {enable | disable}group_name wlan_id

        Step 5   Configure a WLAN radio policy on the access point group by entering this command:

        config wlan apgroup wlan-radio-policy apgroup_name wlan_id {802.11a-only | 802.11bg | 802.11g-only | all}

        Step 6   Assign an access point to an access point group by entering this command:

        config ap group-name group_name Cisco_AP

        Note   

        To remove an access point from an access point group, reenter this command and assign the access point to another group.

        Step 7   To configure HotSpot for the AP group, enter this command:

        config wlan apgroup hotspot {venue | operating-class}

        Step 8   Save your changes by entering this command:

        save config


        Viewing Access Point Groups (CLI)

        To view information about or to troubleshoot access point groups, use these commands:

        • See a list of all access point groups on the controller by entering this command: show wlan apgroups
        • See the BSSIDs for each WLAN assigned to an access point group by entering this command: show ap wlan {802.11a | 802.11b} Cisco_AP
        • See the number of WLANs enabled for an access point group by entering this command: show ap config {802.11a | 802.11b} Cisco_AP
        • Enable or disable debugging of access point groups by entering this command: debug group {enable | disable}