This document discusses a Base Station flashing yellow LED and explains
how to fix the problem.
There are no specific requirements for this document.
This document applies to all models of the Cisco Aironet 340 series
Base Station, and applies to all software versions.
The information in this document was created from the devices in a
specific lab environment. All of the devices used in this document started with
a cleared (default) configuration. If your network is live, make sure that you
understand the potential impact of any command.
Technical Tips Conventions for more information on document
After an initial power up of the Base Station, sometimes the middle LED
continues to flash yellow. This is after the Base Station has been configured
through the Base Station Client Utility (BSCU). This can indicate that the Base
Station has not received the configuration across the wireless link from the
Use this solution to solve the problem.
In order to start the BSCU, double-click the icon, or select BSCU from
the Windows Start menu. Complete these steps:
Select Client and click Edit Client
Verify that the web encryption box is NOT checked.
Select OK to finish.
You can now associate with the Base Station, but the middle LED
still flashes yellow.
In order to start a Telnet session on your PC:
Type the telnet 192.168.200.1
When the Telnet connects to the Base Station, a screen with this
Cisco BSM340 V8.48 Main Menu BSM340_37652a
Option Value Description
1 - SSID [ "tsunami" ] - SSID - Service set identification
2 - EncryptionKey - WEP encryption key in ASCII
3 - HexKey - WEP encryption key in hex
4 - Configure - Use new SSID and key
5 - Mode [ Access Point ] - Operating mode
6 - Name [ "BSM340_37652a" ] - Base station name
7 - DHCP [ on ] - Obtain network address automatically
8 - History - Log and alarm history
9 - Close - Close the telnet session
IP Address : 10.254.013.091 Mask: 255.255.255.192
DNS servers: 10.254.006.077, 10.254.006.148
Domain Name: cisco.com
Enter an option number or name
Type 1 to configure the SSID.
Type the SSID you want. Make a note of this number, because you
need this number later.
Type 3 to configure the WEP key.
Type the WEP key you want. Make a note of this number, because you
need this number later.
Repeat steps 9 through 11 as the Base Station prompts you to
confirm the WEP key.
Type 4 to activate the SSID and WEP key changes
you have just made. The client loses association with the Base Station until
the completion of steps.
Return to your BSCU, select Client and
Edit Client Properties.
Select the web encryption check box.
Enter the WEP key and SSID previously configured.
Click OK when done.
The Base Station middle LED is a steady green, and your client