Configuring VLAN Groups

Finding Feature Information

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Prerequisites for VLAN Groups

A VLAN should be present in the switch to be able to add it to the VLAN group.

Restrictions for VLAN Groups

The number of VLANs mapped to a VLAN group is not limited by Cisco IOS Software Release. But if the number of VLANs in a VLAN group exceed the recommended value of 32, the mobility behavior is unexpected and in the VLAN group, L2 multicast breaks for some VLANs. So it is the responsibility of the administrator to configure feasible number of VLANs in a VLAN group. When a VLAN is added to a VLAN group mapped to a WLAN which already has 32 VLANs, a warning is generated. But when a new VLAN group is mapped to a WLAN with more than 32 VLANs, an error is generated.

For expected behavior of the VLAN group, the VLANs mapped in the group must be present in the switch. The static IP client behavior is not supported.

Information About VLAN Groups

Whenever a wireless client connects to a wireless network (WLAN), the client is placed in a VLAN that is associated with the WLAN. In a large venue such as an auditorium, a stadium, or a conference room where there are numerous wireless clients, having only a single WLAN to accommodate many clients might be a challenge.

The VLAN group feature uses a single WLAN that can support multiple VLANs. The clients can get assigned to one of the configured VLANs. This feature maps a WLAN to a single VLAN or multiple VLANs using the VLAN groups. When a wireless client associates to the WLAN, the VLAN is derived by an algorithm based on the MAC address of the wireless client. A VLAN is assigned to the client and the client gets the IP address from the assigned VLAN. This feature also extends the current AP group architecture and AAA override architecture, where the AP groups and AAA override can override a VLAN or a VLAN group to which the WLAN is mapped.

Related Tasks
Creating VLAN Groups (CLI)

How to Configure VLAN Groups

Creating VLAN Groups (CLI)

SUMMARY STEPS

    1.    configure terminal

    2.    vlan group WORD vlan-list vlan-ID

    3.    end


DETAILED STEPS
     Command or ActionPurpose
    Step 1 configure terminal


    Example: 
    Switch# configure terminal
     

    Enters global command mode.

     
    Step 2vlan group WORD vlan-list vlan-ID


    Example: 

    Switch(config)#vlan group vlangrp1 vlan-list 91-95
     

    Creates a VLAN group with the given group name (vlangrp1) and adds all the VLANs listed in the command. The VLAN list ranges from 1 to 4096 and the recommended number of VLANs in a group is 32.

     
    Step 3end


    Example: 

    Switch(config)#end
     

    Exits the global configuration mode and returns to privileged EXEC mode. Alternatively, press CTRL-Z to exit the global configuration mode.

     
    Related References
    Information About VLAN Groups

    Removing VLAN Group (CLI)

    SUMMARY STEPS

      1.    configure terminal

      2.    vlan group WORD vlan-list vlan-ID

      3.    no vlan group WORD vlan-list vlan-ID

      4.    end


    DETAILED STEPS
      Step 1   configure terminal


      Example: 
      Switch# configure terminal

      Enters global command mode.

      Step 2   vlan group WORD vlan-list vlan-ID


      Example: 

      Switch(config)#vlan group vlangrp1 vlan-list 91-95

      Creates a VLAN group with the given group name (vlangrp1) and adds all the VLANs listed in the command. The VLAN list ranges from 1 to 4096 and the recommended number of VLANs in a group is 32.

      Step 3   no vlan group WORD vlan-list vlan-ID


      Example: 

      Switch(config)#no vlan group vlangrp1 vlan-list 91-95

      Removes the VLAN group with the given group name (vlangrp1).

      Step 4   end


      Example: 

      Switch(config)#end

      Exits the global configuration mode and returns to privileged EXEC mode. Alternatively, press CTRL-Z to exit the global configuration mode.

      Creating VLAN Groups (GUI)

      To create a VLAN group using the switch web UI, you must:

        Step 1   Choose Configuration > Controller > System > VLAN > VLAN Group.

        The VLAN Group page appears. You must provide values for all parameters listed in the VLAN Group window.

        Parameter Description
        VLAN Group Name Group name for the VLANs.
        VLAN List The VLAN list to configure the mesh access point (MAP) access port.
        Step 2   Click Apply.

        Adding a VLAN Group to WLAN (CLI)

        SUMMARY STEPS

          1.    configure terminal

          2.    wlan WORD number

          3.    client vlan WORD

          4.    end


        DETAILED STEPS
           Command or ActionPurpose
          Step 1 configure terminal


          Example: 
          Switch# configure terminal
           

          Enters global command mode.

           
          Step 2wlan WORD number


          Example:

          Switch(config)#wlan wlanname 512
           

          Enables the WLAN to map a VLAN group using an identifier. The WLAN identifier values range from 1 to 512.

           
          Step 3client vlan WORD


          Example:

          Switch(config-wlan)#client vlan vlangrp1
           

          Maps the VLAN group to the WLAN by entering the VLAN identifier, VLAN group, or the VLAN name.

           
          Step 4end


          Example:
          Switch(config-wlan)#end
           

          Exits the global configuration mode and returns to privileged EXEC mode . Alternatively, press CTRL-Z to exit the global configuration mode.

           

          Adding a VLAN Group to WLAN (GUI)

          To add a VLAN group to WLAN using the switch web UI, you must follow the steps defined in this procedure.

            Step 1   To add a VLAN group to a WLAN, choose Configuration > Wireless > WLANs > WLAN Profile > General.

            The general parameter page of the WLAN group appears.

            Step 2   Select the VLAN group values listed in the Interface/Interface Group drop-down list to associate the selected WLAN profile to a VLAN group.
            Step 3   Click Apply.

            Removing VLAN Groups (GUI)

            To remove a VLAN groups using the switch web UI, you must:

              Step 1   Choose Configuration > Controller > System > VLAN > VLAN Group.

              The VLAN Group page appears, listing the following details of the VLAN groups associated with the switch.

              Parameter Description
              VLAN Group Name Group name for the VLANs.
              VLAN List The VLAN list to configure the mesh access point (MAP) access port.
              Step 2   Check the checkbox of the VLAN group you need to delete from the VLAN group names displayed in the VLAN group list .

              You will receive a confirmation message confirming deletion of the selected VLAN group.

              Step 3   Click Ok.

              Viewing VLANs in VLAN Groups (CLI)

              Commands Description
              show vlan group Displays the list of VLAN groups with its name and the VLANs that are available.
              show vlan group group-name <group_name> Displays the specified VLAN group details.
              show wireless vlan group <group_name> Displays the specified wireless VLAN group details.

              Viewing VLAN Groups (GUI)

              To view a VLAN groups using the switch web UI, you must:

                Step 1   Choose Configuration > Controller > System > VLAN > VLAN Group.

                The VLAN Group page appears, listing the following details of the VLAN groups associated with the switch.

                Parameter Description
                VLAN Group Name Group name for the VLANs.
                VLAN List The VLAN list to configure the mesh access point (MAP) access port.
                Step 2   Click Apply.

                Where to Go Next

                After configuring VLAN groups, you can configure the following:

                • VLANs

                • VLAN Trunking Protocol (VTP)

                • VLAN trunks

                • Voice VLANs

                Additional References

                Related Documents

                Related Topic Document Title

                For complete syntax and usage information for the commands used in this chapter.

                VLAN Command Reference (Catalyst 3650 Switches)

                Layer 2/3 Command Reference (Catalyst 3650 Switches)

                VLAN access-maps

                Security Configuration Guide (Catalyst 3650 Switches)

                Security Command Reference (Catalyst 3650 Switches)

                VLAN and Mobility Agents

                Mobility Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)

                Cisco Flexible NetFlow

                Cisco Flexible NetFlow Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)

                Flexible Netflow Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)

                IGMP Snooping

                IP Multicast Routing Command Reference (Catalyst 3650 Switches)

                IP Multicast Routing Configuration Guide (Catalyst 3650 Switches)

                IPv6

                IPv6 Configuration Guide (Catalyst 3650 Switches)

                IPv6 Command Reference (Catalyst 3650 Switches)

                SPAN

                Network Management Command Reference (Catalyst 3650 Switches)

                Network Management Configuration Guide (Catalyst 3650 Switches)

                Platform-independent configuration information

                Identity Based Networking Services Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)

                Error Message Decoder

                Description Link

                To help you research and resolve system error messages in this release, use the Error Message Decoder tool.

                https:/​/​www.cisco.com/​cgi-bin/​Support/​Errordecoder/​index.cgi

                Standards and RFCs

                Standard/RFC Title

                RFC 1573

                Evolution of the Interfaces Group of MIB-II

                RFC 1757

                Remote Network Monitoring Management

                RFC 2021

                SNMPv2 Management Information Base for the Transmission Control Protocol using SMIv2

                MIBs

                MIB MIBs Link

                All supported MIBs for this release.

                To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

                http:/​/​www.cisco.com/​go/​mibs

                Technical Assistance

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                Feature History and Information for VLAN Groups

                Release

                Modification

                Cisco IOS XE 3.3SE

                This feature was introduced.

                Cisco IOS XE 3.3SE

                VLAN GUI support.