Cisco 1231G - Aironet - Wireless Access Point Manual de usuario descargar pdf (Pagina 20)

sending station is leaving (or has left) BSS". What is the issue?

A. Both of these messages point towards an RF issue. Assign different channels on the AP in

order to fix this issue.

Q. The Cisco Aironet APs in my WLAN network do not broadcast the

service set identifiers (SSIDs). What could be the reason? Do I need to

enable a particular feature on the AP?

A. As long as you do not enable Guest mode under the SSID Manager, the AP does not

broadcast the SSID in its beacons. You can verify with a client and scan for SSIDs in order to

make sure it is not listed.

In order to enable guest mode on an SSID, type this command on the AP in global

configuration mode:

Ap<config>#dot11 ssid ssid−string

Ap<config−ssid>#guest−mode

Q. I have my AIR−AP1231G−A−K9 AP. Why do I not see an option to turn

on the A radio on this AP and am only able to see the option for G

radios? Am I not able to associate 802.11b clients with it?

A. The AIR−AP1231G−A−K9 AP has a G radio. The part number AP1231G implies it has

only G radio with it. G radios are backwards compatible with B radios because they work on

the same frequency. There is no A radio on this unit and that is why you cannot turn it on.

You might need to add the A radio module. The A radio works on a different frequency (at 5

GHZ) than radios G and B (at 2.4 GHZ).

Q. I have a Cisco Wireless IP Phone 7920 that is connected to a Cisco

AP. I see that the 7920 is associated with the AP, but no IP address is

assigned. I use Extensible Authentication Protocol (EAP). I see the

message "Info Station [SEP001121ceb9a4]001121ceb9a4

Authenticated", which is followed by "Info Station

[SEP001121ceb9a4]001121ceb9a4 Reassociated" and "Warning

EAP retry limit reached for Station

[SEP001121ceb9a4]001121ceb9a4". Then I see "Info

Deauthenticating [SEP001121ceb9a4]001121ceb9a4, reason

'Previous Authentication No Longer Valid' ". What is the

problem?

A. The reason that you get these messages is that the shared secret in the AP is different than

the shared secret from the RADIUS server. Make sure that the shared−secret keys for EAP

are identical on both. You must retype the shared−secret key in both the AP and the RADIUS

server.

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Cisco 1231G - Aironet - Wireless Access Point Manual de usuario Pagina 20