WRT54GS won't authenticate in "g only" mode

This is WRT54GS Rev 7, latest firmware. I am using it with a relatively
new Lenovo laptop that has a 802.11g built-in (using Intel chipset).

If I set the Linksys to "Mixed" mode, everything works. And it connects
in the 802.11g mode.

If I set it to "g only" mode, the connection does not get authenticated.
This is with stong encryption(WPA2 AES) or even no encryption.

Is this a bug? or should I always leave the Linksys in the Mixed mode
anyway (is a downside to doing this)?

Aloke
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On Tue, 31 Jul 2007 18:14:44 -0400, Aloke Prasad
<aprasad123@columbus.rr.invalid.com> wrote:

>This is WRT54GS Rev 7, latest firmware. I am using it with a relatively
>new Lenovo laptop that has a 802.11g built-in (using Intel chipset).
>
>If I set the Linksys to "Mixed" mode, everything works. And it connects
>in the 802.11g mode.
>
>If I set it to "g only" mode, the connection does not get authenticated.
> This is with stong encryption(WPA2 AES) or even no encryption.
>
>Is this a bug? or should I always leave the Linksys in the Mixed mode
>anyway (is a downside to doing this)?

Well, nothing in the firmware release notes:
<http://www.linksys.com/servlet/Satellite?blobcol=urldata&blobheadername1=Content-Type&blobheadername2=Content-Disposition&blobheadervalue1=text%2Fplain&blobhead ervalue2=inline%3B+filename%3DWRT54GSv7_v7.50.2_Fw ReleaseNotes.txt&blobkey=id&blobtable=MungoBlobs&b lobwhere=1130871132207&ssbinary=true&lid=908086187 9B83>

Which model Lenovo? I had some similar oddities with a new T60 laptop
and Intel 3945abg with Proset version something. I just couldn't get
a connection on some wireless routers. I was fairly sure it was the
laptop as 6 other laptops (including 3 of mine) worked perfectly.

After much tinkering and updating from the IBM/Lenovo web pile, I went
to the Intel web site, download the latest Proset version, and lived
happily ever after:
<http://www.intel.com/network/connectivity/products/wireless/proset/proset_software.htm>
I don't know what model Lenovo you have or what card is inside, but
this might apply.

If not, try the laptop with other access points, and try other laptops
with this particular access point. The idea is to isolate the problem
in either the laptop or the access point.

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 jeffl@comix.santa-cruz.ca.us
# http://802.11junk.com jeffl@cruzio.com
# http://www.LearnByDestroying.com AE6KS

Thanks.

Any downside to leaving the Linky in the "Mixed" mode?

Aloke

Jeff Liebermann wrote:
> On Tue, 31 Jul 2007 18:14:44 -0400, Aloke Prasad
> <aprasad123@columbus.rr.invalid.com> wrote:
>
>> This is WRT54GS Rev 7, latest firmware. I am using it with a relatively
>> new Lenovo laptop that has a 802.11g built-in (using Intel chipset).
>>
>> If I set the Linksys to "Mixed" mode, everything works. And it connects
>> in the 802.11g mode.
>>
>> If I set it to "g only" mode, the connection does not get authenticated.
>> This is with stong encryption(WPA2 AES) or even no encryption.
>>
>> Is this a bug? or should I always leave the Linksys in the Mixed mode
>> anyway (is a downside to doing this)?
>
> Well, nothing in the firmware release notes:
> <http://www.linksys.com/servlet/Satellite?blobcol=urldata&blobheadername1=Content-Type&blobheadername2=Content-Disposition&blobheadervalue1=text%2Fplain&blobhead ervalue2=inline%3B+filename%3DWRT54GSv7_v7.50.2_Fw ReleaseNotes.txt&blobkey=id&blobtable=MungoBlobs&b lobwhere=1130871132207&ssbinary=true&lid=908086187 9B83>
>
> Which model Lenovo? I had some similar oddities with a new T60 laptop
> and Intel 3945abg with Proset version something. I just couldn't get
> a connection on some wireless routers. I was fairly sure it was the
> laptop as 6 other laptops (including 3 of mine) worked perfectly.
>
> After much tinkering and updating from the IBM/Lenovo web pile, I went
> to the Intel web site, download the latest Proset version, and lived
> happily ever after:
> <http://www.intel.com/network/connectivity/products/wireless/proset/proset_software.htm>
> I don't know what model Lenovo you have or what card is inside, but
> this might apply.
>
> If not, try the laptop with other access points, and try other laptops
> with this particular access point. The idea is to isolate the problem
> in either the laptop or the access point.
>

On Tue, 31 Jul 2007 20:39:07 -0400, Aloke Prasad
<aprasad123@columbus.rr.invalid.com> wrote:

>Thanks.
>Any downside to leaving the Linky in the "Mixed" mode?
>Aloke

Not really. In the bad old days of the first 802.11g implimentations,
the router used to "scan" between 802.11g and 802.11b. The result was
about a 40% performance hit in mixed mode. See the table at:
<http://wireless.wikia.com/wiki/Wi-Fi#Performance_and_Speed>
With 802.11g only, the theoretical maximum for a 54Mbit/sec
connection is 25Mbits/sec. For mixed mode, it's about 15Mbits/sec
maximum.

However, the bad old days are over. I'm too busy to run a test right
now, but these days, there's hardly any difference for a single
802.11g connection. However, if you have someone connecting at
802.11b, and you run a bechmark test at 802.11g, you will see a
performance hit like the bad old days. Therefore, it's safe to use
mixed mode, but only if you don't have any 802.11b wireless clients.





--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 jeffl@comix.santa-cruz.ca.us
# http://802.11junk.com jeffl@cruzio.com
# http://www.LearnByDestroying.com AE6KS