WPA-PSK fails with Linksys WPC54Gv2 card and WRT54GS router

Michael Reilly michaelr
Sat Aug 21 01:21:51 PDT 2004

Thank you for your response.

Sorry it took so long to get back to this.  It turns out the WRT54GS doesn't 
understand eapol version 2.  I had set version 2 for a Cisco Access Point. 
Setting eapol_version=1 works for both The Linksys and the Cisco.

wpa_supplicant works perfectly with driverloader 2.03 on my WPC54Gv2 and the 

Again thank you,

Jouni Malinen wrote:
> On Wed, Aug 18, 2004 at 03:52:02PM -0700, Michael Reilly wrote:
>>I am using driverloader version 2.03 with my WPC54Gv2 card (TI chipset, not 
>>broadcom) and am using WPA-PSK (wpa_supplicant-0.2.4).  It works perfectly 
>>when the AP is a Cisco 1100 or 1200.
>>But when I switch to a Linksys WRT54GS router it fails.  The same ndis 
>>drivers under windows 2000 work fine so it looks like the WRT54GS is 
>>capable of WPA-PSK.
> I haven't tested WRT54GS, but WRT54G seems to be working fine with
> wpa_supplicant. I would assume WRT54GS is quite close to WRT54G as far
> as software on level concerning WPA authentication is concerned.
> What firmware version are you using in the WRT54GS?
>>I didn't save a copy of the log - I'll get it tonight.  However I recall 
>>that is fails after step 2/4.  I think the WRT54G disconnects.
> That is likely to mean that the authenticator did not like something in
> the EAPOL-Key packet from the supplicant. If you get to msg 2/4, the
> association seemed to have succeeded and at least the client is able to
> receive EAPOL-Key frames from the authenticator.
>>What should I look for tonight while debugging and capturing the logs?
> I would like to see full debug log from wpa_supplicant (-dd on command
> line and leave it on foreground). In addition, it would be useful to get
> a sniffer log of the negatiation. Ideally, this would be from a wireless
> sniffer (included IEEE 802.11 headers and all management frames in
> addition to EAPOL-Key data frames); however, even a sniffer log from the
> client host (e.g., tcpdump/ethereal dump from the wireless interface)
> would be useful.
> Debug log from the authenticator would of course be useful, but I don't
> know whether that would be easily available from WRT54GS.

---- ---- ----
Michael Reilly    michaelr at cisco.com
     Cisco Systems,  California

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