03-16-2005 12:13 PM - edited 07-04-2021 10:34 AM
I have a very basic config, 40-bit wep, no vlans, etc. When my AP (1231G) is configured to xmit on ch 1 no one can connect. I have Cisco clients and others. Any other channel works fine. Any ideas? I am on IOS 12.3(2)JA Here is my config:
version 12.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname BTLR-AP1200#1
!
enable secret
!
username admin privilege 15 password 7
ip subnet-zero
!
no aaa new-model
!
!
bridge irb
!
!
interface Dot11Radio0
no ip address
no ip route-cache
!
encryption key 1 size 40bit xxxxxtransmit-key
encryption mode ciphers wep40
!
ssid wireless
authentication open
!
short-slot-time
speed basic-5.5 basic-6.0 basic-9.0 basic-11.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0
rts threshold 2312
channel 2462
station-role root
no cdp enable
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
!
interface FastEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
!
interface BVI1
ip address 172.18.23.10 255.255.255.0
no ip route-cache
!
ip default-gateway 172.18.23.1
ip http server
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
ip radius source-interface BVI1
logging snmp-trap emergencies
logging snmp-trap alerts
logging snmp-trap critical
logging snmp-trap errors
logging snmp-trap warnings
bridge 1 route ip
03-20-2005 08:04 PM
Use a scanner like Netstumbler (www.netstumbler.org/downloads) and see if there is lot of interference on ch 1. This is a possibility.
Not sure if this is a bug!
03-23-2005 07:26 AM
Nope, no interference. This really seems to be a problem on IBM ThinkPads. Does anyone else have problems with ThinkPad T4x series?
06-24-2005 03:14 AM
We have a lot of ThinkPads T3x and T4x. Only the T42 is unpredictable... But it performs better, if you are using external USB-connected antennas. We are using AP1231G-E-K9, IOS 12.2(13)JA4
03-22-2005 01:54 PM
I was told that 12.3(2)JA has problems and no longer should be used.
upgrade to: 12.3(2)JA2 which is the latest as of 3/22/2005
03-23-2005 08:49 AM
I ran into a problem like this, and it was a problem related to interference/shielding in the laptop. In short, there was noise generated internal to the laptop. We resolved the issue by changing the Clear Channel Assessment setting on the client. I think we changed it to energy detect.
This setting is available in the ACU. Edit the profile and look under the RF network tab:
Kent.
08-17-2005 09:06 AM
You should do a Carrier Busy test to check if there is interference on channel 1.
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