Configuring Multiple Basic Service Set Identifiers and Microsoft WPS IE SSIDL
Last Updated: October 13, 2011
This module describes how to configure multiple basic service set identifiers (BSSID) on a Cisco 800, 1800, 2800, or 3800 series integrated services router, hereafter referred to as an access point (AP).
Access point 802.11a and 802.11g radios support up to 16 BSSIDs which are similar to MAC addresses. You use multiple BSSIDs to broadcast more than one SSID in beacons.
Devices on your wireless LAN that are configured to associate to a specific access point based on the access point MAC address (for example, client devices, repeaters, hot standby units, or workgroup bridges) might lose their association when you add or delete a multiple BSSID. When you add or delete a multiple BSSID, check the association status of devices configured to associate to a specific access point. If necessary, reconfigure the disassociated device to use the BSSID's new MAC address.
This module also describes how to configure the Microsoft WPS IE SSIDL feature. This feature allows an access point to broadcast a list of configured SSIDs such as SSID Lists (SSIDL) in the Microsoft Wireless Provisioning Services information element (WPS IE). A client with the ability to read the SSIDL can alert the user to the availability of the SSIDs.
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to
www.cisco.com/go/cfn. An account on Cisco.com is not required.
Prerequisites for Configuring Multiple Basic Service Set Identifiers and Microsoft WPS IE SSIDL
The following prerequisites apply to configuring multiple BSSIDs and Microsoft WPS IE SSIDL:
VLANs must be configured.
Access points must run Cisco IOS Release 12.4(15)T or a later release.
Access points must contain an 802.11a or 802.11g radio that supports multiple BSSIDs. To determine whether a radio supports multiple basic SSIDs, enter the show controllers radio-interface command. The radio supports multiple basic SSIDs if the results include this line:
Number of supported simultaneous BSSID on radio-interface: 8
Information About Configuring Multiple Basic Service Set Identifiers and Microsoft WPS IE SSIDL
Perform this task to configure multiple BSSIDs on an access point.
SUMMARY STEPS
1.enable
2.configureterminal
3.dot11mbssid
4.dot11ssidname
5.exit
6.interfacedot11Radiointerface
7.ssidname
8.end
9.copyrunning-configstartup-config
DETAILED STEPS
Command or Action
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
Enter your password if prompted.
Step 2
configureterminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
dot11mbssid
Example:
Router(config)# dot11 mbssid
Enables multiple basic SSIDs on all access point radio interfaces.
Step 4
dot11ssidname
Example:
Router(config)# dot11 ssid guest
Creates a global SSID.
The SSID is inactive until you use the ssid interface configuration command to assign the SSID to a specific radio interface.
Step 5
exit
Example:
Router(config-ssid)# exit
Exits SSID configuration mode.
Step 6
interfacedot11Radiointerface
Example:
Router(config)# interface dot11Radio 0/3/0
Enters interface configuration mode for the radio interface.
For the Cisco 800 and 1800 series fixed-configuration routers, the interface argument can be either 0, for the 2.4-GHz, 802.11b/g radio port, or 1, for the 5-GHz, 802.11a radio port.
For the Cisco 1800 series modular router and the
Cisco 2800 and 3800 series routers, the interface argument is in module/slot/port format, for example, 0/3/0.
Step 7
ssidname
Example:
Router(config-if)# ssid guest
Creates an SSID for a radio interface.
Step 8
end
Example:
Router(config-if-ssid)# end
Returns to privileged EXEC mode.
Step 9
copyrunning-configstartup-config
Example:
Router# copy running-config startup-config
(Optional) Saves your entries in the configuration file.
Including an SSID in an SSIDL IE
The access point or bridge beacon can advertise only one broadcast SSID. However, you can use SSIDL information elements (SSIDL IEs) in the access point or bridge beacon to alert client devices of additional SSIDs on the access point or bridge. When you designate an SSID to be included in an SSIDL IE, client devices detect that the SSID is available, and they also detect the security settings required to associate using that SSID.
SUMMARY STEPS
1.enable
2.configureterminal
3.dot11ssidname
4.information-elementssidl[advertisementwps]
5.
Repeat Steps 3 and 4 for each SSID you want included in the information element.
6.exit
7.interfacedot11Radiointerface
8.ssidname
9.end
10.copyrunning-configstartup-config
DETAILED STEPS
Command or Action
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
Enter your password if prompted.
Step 2
configureterminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
dot11ssidname
Example:
Router(config)# dot11 ssid guest
Creates a global SSID.
The SSID is inactive until you use the ssid interface configuration command to assign the SSID to a specific radio interface.
Designates an SSID for inclusion in an SSIDL IE that the access point includes in its beacons.
Step 5
Repeat Steps 3 and 4 for each SSID you want included in the information element.
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Step 6
exit
Example:
Router(config-ssid)# exit
Exits SSID configuration mode.
Step 7
interfacedot11Radiointerface
Example:
Router(config)# interface dot11Radio 0/3/0
Enters interface configuration mode for the radio interface.
For the Cisco 800 and 1800 series fixed-configuration routers, the interface argument can be either 0, for the 2.4-GHz, 802.11b/g radio port, or 1, for the 5-GHz, 802.11a radio port.
For the Cisco 1800 series modular router and the
Cisco 2800 and 3800 series routers, the interface argument is in module/slot/port format, for example, 0/3/0.
Step 8
ssidname
Example:
Router(config-if)# ssid guest
Assigns a globally configured SSID to a radio interface and enters SSID configuration mode.
If you created more than one global SSID in Step 3, you would repeat this command for each SSID name.
Step 9
end
Example:
Router(config-if-ssid)# end
Returns to privileged EXEC mode.
Step 10
copyrunning-configstartup-config
Example:
Router# copy running-config startup-config
(Optional) Saves your entries in the configuration file.
Configuration Examples for Configuring Multiple Basic Service Set Identifiers
Configuring Multiple BSSIDs on an Access Point Example
This example shows the CLI commands that you use to enable multiple BSSIDs on a radio interface, create an SSID named visitor, designate the SSID as a BSSID, specify that the BSSID is included in beacons, and assign the SSID visitor to the radio interface:
No new or modified RFCs are supported, and support for existing RFCs has not been modified.
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Feature Information for Configuring Multiple Basic Service Set Identifiers and Microsoft WPS IE SSIDL
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to
www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 1
Feature Information for Configuring Multiple Basic Service Set Identifiers (BSSIDs)
Feature Name
Releases
Feature Information
Microsoft WPS IE SSIDL
12.4(15)T
This feature allows an access point to broadcast a list of configured SSIDs such as SSID Lists (SSIDL) in the Microsoft Wireless Provisioning Services Information Element (WPS IE). A client with the ability to read the SSIDL can alert the user to the availability of the SSIDs.
Multiple Basic Service Set ID (BSSID)
12.4(15)T
This feature permits a single access point (AP) to appear to the wireless LAN (WLAN) as multiple virtual APs.
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