Trouble with AP 420 NA

[John Case]

I have 35 of the HP420 APs, and am having fits. I have all wireless security turned off, but still have the problem. It seems that most clients that are using an Intel 2200BG card have the most problems. We are handing out 400 laptop computers to our students this week, and we can't connect. We seem to associate with the AP, but the client doesn't get an IP address on the network. Has anybody found an answer to this?

[perry hammond]

John,

seems funny you get no ip at all. we havent experienced that here. AP will always assign ip address even with wep, but when wpa-psk is configured it takes 20 seconds but will eventually assign the ip.

Have you applied the latest firmware ? it totally changes the way you see the AP interface.

Perry

[John Griffin_3]

I've had the same problems with all kinds of network cards, including iPAQ's. The "4 way handshake failed" message always comes up in the logs. I've had this with all versions of the firmware, including the 2.10

Normally it is resolved with a new firmware version on the client, but i wonder if the 420 is being too strick in some way.

It's rather annoying as i've had instances where clients can WPA to el-cheapo AP's without a problem, yet have great difficulties with the 420.

[Huub Dewachter]

Same kind of trouble with a Linksys WET54G.

[Paul Cross_2]

I've just had a user with a Toshiba laptop with an Intel card running XP SP2 try to connect to our HP 420s running v2.1 with WPA-AES-TKIP. The computer connects using windows zero config, fine but then stops after a few seconds. The logs show this:

Oct 05 15:02:13 Warning: 802.11g:Countermeasure is in progress, shutting down this SSID for 60 secs
2 Oct 05 15:02:13 Warning: 802.11g:Last MIC failure at 00-12-f0-a1-4e-cc
3 Oct 05 15:02:13 Warning: 802.11g:Last MIC failure at 00-12-f0-a1-4e-cc
4 Oct 05 15:02:08 Information: WPA group key update successes at 00-12-f0-a1-4e-cc
5 Oct 05 15:02:08 Notice: Successful 802.1X Authentication for station 00:12:F0:A1:4E:CC
6 Oct 05 15:02:08 Notice: 802.11g:Station Forwarding: 00-12-f0-a1-4e-cc Encryption key type=WPA-AUTO
7 Oct 05 15:02:08 Information: WPA group key update successes at 00-12-f0-a1-4e-cc
8 Oct 05 15:02:08 Information: WPA 4-way handshaking successes at 00-12-f0-a1-4e-cc
9 Oct 05 15:02:08 Debug: 802.1X Authentication Succeeded: 00-12-f0-a1-4e-cc
10 Oct 05 15:02:07 Notice: 802.11g:SSID 1 ::Station Associated: 00-12-f0-a1-4e-cc
11 Oct 05 15:02:07 Notice: 802.11g:SSID 1 ::Station Authenticated: 00-12-f0-a1-4e-cc
12 Oct 05 15:01:08 Information: WPA 4-way handshaking fails at 00-12-f0-a1-4e-cc
13 Oct 05 15:01:07 Debug: 802.1X Authentication Succeeded: 00-12-f0-a1-4e-cc
14 Oct 05 15:01:06 Notice: 802.11g:SSID 1 ::Station Associated: 00-12-f0-a1-4e-cc
15 Oct 05 15:01:06 Notice: 802.11g:SSID 1 ::Station Authenticated: 00-12-f0-a1-4e-cc


I've had to ban him from the network until I can figure out what is going on. Any Ideas?

[Marcus Clareus]

Hi

Have anyone solved this issue? I have the same problem with clients not getting any ipaddress. Clients use intel 2200BG cards. It works sometimes for some of the clients but not at all for other.

[Jeff Brownell]

I am not sure that all of the posts are talking about the same issue, however, several of them sound similar to an issue we just resolved.

The problem was that stations, especially with the Intel 2200BG, were entering power save mode and missing disassociate frames from the AP.

The solution is to have the AP start sending the disassociate frames to the Power Save queue so that the station would see that it has a frame waiting and pull it, so it would know as soon as it was disassociated and then could get right to re-authenticating.

The code incorporating this fix is still in testing and should hopefully release in 4-6 weeks. If you'd like to test the code for beta purposes only, open a call with support to obtain it.

[Marcus Clareus]

We are using some beta firmware and we still have the same problem. It seems like WPA fails and therefour there is no ip etc. Could this have something to do with that we use WPA+WPA2 or B+G Mixed mode ?

[Jeff Brownell]

V2.1.3 software for the AP 420 has been posted. You can get the software at:
http://www.hp.com/rnd/software/wireless_ap.htm

The PCM PRP file will be updated shortly if it isnt already there.

[Trefor Griffith]

I have 8 hp Procurve AP420 ww devices and 64 hp/Compaq nx6110 laptops. I am trying to configure my wireless LAN to WPA-PSK/TKIP. Unfortunately, I too suffer from the dreaded 'WPA 4-way handshaking fails at xx-xx-xx-xx-xx-xx'. The AP420s are running software version 2.1.5.
Has anyone resolved this issue yet?