The SSID is a unique identifier that wireless networking devices use to establish and maintain wireless connectivity. The SSID can consist of up to 32 alphanumeric, case-sensitive, characters. Do not include spaces in your SSIDs. Create an SSID and enter SSID configuration mode for the new SSID.
There are a few restrictions when choosing a SSID.
These six characters are not allowed/invalid characters in an SSID:
The first character cannot contain the
Creating an SSID Globally
In Cisco IOS Releases 12.3(2)JA and later, you can configure SSIDs globally or for a specific radio interface. When you use the dot11 ssid global configuration command to create an SSID, you can use the ssid configuration interface command to assign the SSID to a specific interface.
When an SSID has been created in global configuration mode, the ssid configuration interface command attaches the SSID to the interface but does not enter ssid configuration mode. However, if the SSID has not been created in global configuration mode, the ssid command puts the CLI into SSID configuration mode for the new SSID.
SSIDs created in Cisco IOS Releases 12.3(7)JA and later become invalid if you downgrade the software version to an earlier release.
Beginning in privileged EXEC mode, follow these steps to create an SSID globally. After you create an SSID, you can assign it to specific radio interfaces.