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Configuring SSIDs

Table Of Contents

Configuring SSIDs

Understanding SSIDs

Configuring the SSID

Default SSID Configuration

Creating an SSID


Configuring SSIDs


This chapter describes how to configure a service set identifier (SSID) on the access point/bridge. This chapter contains these sections:

Understanding SSIDs

Configuring the SSID

Understanding SSIDs

The SSID is a unique identifier that wireless networking devices use to establish and maintain wireless connectivity. Multiple access point/bridges on a network or sub-network can use the same SSID. SSIDs are case sensitive and can contain up to 32 alphanumeric characters. Do not include spaces in your SSID. The 1300 series access point/bridge supports multiple SSIDs.

When you configure an SSID you assign these configuration settings to the SSID:

VLAN

RADIUS accounting for traffic using the SSID

Access Point/Bridge authentication method


Note For detailed information on client authentication types, see Chapter 10 "Configuring Authentication Types."


If you want the access point/bridge to allow associations from access point/bridges that do not specify an SSID in their configurations, you can include the SSID in the access point/bridge's beacon. The access point/bridge's default SSID, autoinstall, is included in the beacon. However, to keep your network secure, you should remove the SSID from the beacon.

You can assign an authentication username and password to the SSID to allow the access point/bridge to authenticate to your network using LEAP authentication.

If your network uses VLANs, you should assign the access point/bridge SSID to your network's native VLAN.

Configuring the SSID

These sections contain configuration information for the SSID:

Default SSID Configuration

Creating an SSID

Default SSID Configuration

Table 7-1 shows the default SSID configuration:

Table 7-1 Default SSID Configuration

Feature
Default Setting

SSID

autoinstall

Guest Mode SSID

autoinstall (The access point/bridge broadcasts this SSID in its beacon and allows access point/bridges with no SSID to associate.)


Creating an SSID

Beginning in privileged EXEC mode, follow these steps to create an SSID:

 
Command
Purpose

Step 1 

configure terminal

Enter global configuration mode.

Step 2 

interface dot11radio 0

Enter interface configuration mode for the radio interface.

Step 3 

ssid ssid-string

Create an SSID and enter SSID configuration mode for the new SSID. The SSID can consist of up to 32 alphanumeric characters. SSIDs are case sensitive.

Note You can include spaces in an SSID, but be careful not to add spaces to an SSID accidentally, especially at the end of an SSID.

Step 4 

authentication client
username
username
password password

(Optional) Set an authentication username and password that the access point/bridge uses to authenticate to the network.

Step 5 

accounting list-name

(Optional) Enable RADIUS accounting for this SSID. For list-name, specify the accounting method list. Click this link for more information on method lists: http://www.cisco.com/en/US/docs/ios/12_2/security/configuration/guide/scfacct.html

Step 6 

vlan vlan-id

(Optional) Assign the SSID to a VLAN on your network. On your access point/bridge, you should assign the SSID to the native VLAN.

Step 7 

infrastructure-ssid

Designate the SSID as the infrastructure SSID. It is used to instruct a non-root access point/bridge or workgroup bridge radio to associate with this SSID.

Step 8 

end

Return to privileged EXEC mode.

Step 9 

copy running-config startup-config

(Optional) Save your entries in the configuration file.


Note You use the ssid command's authentication options to configure an authentication type for the SSID. See Chapter 10 "Configuring Authentication Types,"for instructions on configuring authentication types.


Use the no form of the command to disable the SSID or to disable SSID features.

This example shows how to:

Name an SSID

Configure the SSID for RADIUS accounting

Assign the SSID to the native VLAN

Designate the SSID as the infrastructure SSID

bridge# configure terminal
bridge(config)# interface dot11radio 0
bridge(config-if)# ssid bridgeman
bridge(config-ssid)# accounting accounting-method-list
bridge(config-ssid)# vlan 1
bridge(config-ssid)# infrastructure-ssid
bridge(config-ssid)# end