WEP Authentication Example

Question

I'm setting up an autonomous 1142N AP via CLI only, and I'm trying to use this static wep example from
http://www.cisco.com/en/US/customer/docs/wireless/access_point/12.3_8_JA/configuration/guide/s38frst.html#wp1051166
The only problem is I cannot authenticate from my laptop. What statements are missing in this config to provide a key, or how do I authenticate with WEP?
Example: Static WEP
This example shows part of the configuration that results from using the Express Security page to create an SSID called static_wep_ssid, excluding the SSID from the beacon, assigning the SSID to VLAN 20, selecting 3 as the key slot, and entering a 128-bit key:
interface Dot11Radio0
no ip address
no ip route-cache
encryption vlan 20 key 3 size 128bit 7 FFD518A21653687A4251AEE1230C transmit-key
encryption vlan 20 mode wep mandatory
ssid static_wep_ssid
    vlan 20
    authentication open
speed basic-1.0 basic-2.0 basic-5.5 basic-11.0
rts threshold 2312
station-role root
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 Dot11Radio0.20
encapsulation dot1Q 20
no ip route-cache
bridge-group 20
bridge-group 20 subscriber-loop-control
bridge-group 20 block-unknown-source
no bridge-group 20 source-learning
no bridge-group 20 unicast-flooding
bridge-group 20 spanning-disabled
interface Dot11Radio1
no ip address
no ip route-cache
encryption vlan 20 key 3 size 128bit 7 741F07447BA1D4382450CB68F37A transmit-key
encryption vlan 20 mode wep mandatory
ssid static_wep_ssid
    vlan 20
    authentication open
speed basic-6.0 9.0 basic-12.0 18.0 basic-24.0 36.0 48.0 54.0
rts threshold 2312
station-role root
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 Dot11Radio1.20
encapsulation dot1Q 20
no ip route-cache
bridge-group 20
bridge-group 20 subscriber-loop-control
bridge-group 20 block-unknown-source
no bridge-group 20 source-learning
no bridge-group 20 unicast-flooding
bridge-group 20 spanning-disabled

Answer 1

Hi,
As initial remark, please allow me to question the usage of WEP as it is the weakest security method and not recomended if you really want to secure your network.
Regarding the configuration itself, it would really help a bit more if you could show the full config.
For the part shared, i noticed that you are using 128bit key, however please keep in mind that for the creation of a 128-bit WEP link, Cisco products only interact       with other Cisco products, so if your PC does not have a cisco card it may not connect.
As in everything i would start by the basic:
- configure no security method -> does the client associate fine and gets IP address?
- If yes, move to the security settings -> try with a 40 bit key -> does it work and the PC gets IP address?
If you decide to go for a better security setting like WPA or WPA2, you can find here usefull examples:
http://www.cisco.com/en/US/customer/products/ps6521/prod_configuration_examples_list.html.
HTH,
Tiago
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