Slow WLAN connection

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Rollo Martins · #1 Post by **Rollo Martins** » Wed Mar 30, 2005 7:29 am

Hi all

I own a T42 and an X31. My WLAN runs over a Planet access point. DHCP is on.

The X31 takes only a few seconds to connect when coming out of standby (connecting at 11 Mbps). The T42, connecting at 54 Mbps, often takes more than a minute to connect and sometimes even completely fails. During the connecting time the taskbar icon shows the moving yellow ball and the mouseover text says the network address is being obtained.

I have no idea whether this is a router problem or a problem of my T42. Can anyone repeat the problem? How long does a 54 Mbps connection usually take to be established after the T42 has come out of standby? Is it normal that 54 Mbps connections take that much longer than 11 Mbps to establish?

Thanks for your assistance.

Simon

Leon · #2 Post by **Leon** » Wed Mar 30, 2005 8:57 am

802.11g should connect the same or faster. However, a few questions:

1. Are you connecting both 802.11b and 80211g network cards to the same access point alt the same time?

2. Are both machines using IBM Access Connections to connect with?

3. Is the WZC (Windows Zero Configuration) Service running on both machines?

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Rollo Martins · #3 Post by **Rollo Martins** » Wed Mar 30, 2005 2:57 pm

Thanks Leon for your reply.

Leon wrote:802.11g should connect the same or faster. However, a few questions:

1. Are you connecting both 802.11b and 80211g network cards to the same access point alt the same time?

Sometimes yes, sometimes no. I do not notice a difference.

Leon wrote: 2. Are both machines using IBM Access Connections to connect with?

Yes. I recently installed the newest versions.

Leon wrote: 3. Is the WZC (Windows Zero Configuration) Service running on both machines?

It is on the T42. Dunno if on the X31 (I do not have it here at the moment).

(For other German-speaking readers: The service is called "Konfigurationsfreie drahtlose Verbindung" in German, it took me some time to figure this out...).

Kind regards

Simon

Leon · #4 Post by **Leon** » Wed Mar 30, 2005 3:09 pm

One other question... which wireless card in the T42?

Rollo Martins · #5 Post by **Rollo Martins** » Wed Mar 30, 2005 4:23 pm

Leon wrote:One other question... which wireless card in the T42?

The Atheros/Accton model, not the intel card.

Leon · #6 Post by **Leon** » Wed Mar 30, 2005 4:40 pm

Is this an internal IBM suppled one... if so, which model? If not EXACTLY which model card and driver version?

Rollo Martins · #7 Post by **Rollo Martins** » Thu Mar 31, 2005 5:21 pm

Guess I solved the problem: While searching for the information you requested I noticed that the power save mode of the WLAN card was set to maximum. Setting it to off seems to solve the problem.

Thank you very much for your help nevertheless, and sorry for bothering you.

Simon

Leon · #8 Post by **Leon** » Thu Mar 31, 2005 6:08 pm

No bother... others will find your thread useful. Yes, if Power Save Mode is set for the WLAN Card, you WILL have a longer connection time coming back from standby.

As an aside, in case you don't know and for others:

When connecting both b and g devices at the same time to a g router, the speed for ALL connections will drop to b speed (about 5.5 Mbs nominal). That is why I have both an a AND a separate g router (for my T42 only).

Slow WLAN connection

Slow WLAN connection

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