Link to home
Start Free TrialLog in
Avatar of epichero22
epichero22Flag for United States of America

asked on

Which wireless AP will a computer connect to?

My office has a wireless router in the front and a wifi access point in the back.  The computer can reach both of them, but how does it decide which one to connect to?

Both the router and AP have the same SSID, password, and transmission speeds; what's different it the channel they operate on.
Avatar of p_nuts
Flag of Netherlands image

The computer should connect to the strongest signal

The only thing you need to worry about is that only one device is giving out up addresses if you use DHCP
As mentioned it is generally based on the strongest signal received but there are other things that can enter into the decision made by the PC as well.

One is what frequency band, 2.4ghz or 5ghz, the chipset favors or in some cases it may only work with one or the other.

Another is if there is an open SSID a client will usually connect to that before hitting any that have security enabled. Not an issue in your case since you have the same settings on both APs.
Avatar of epichero22


We're only using the 2.4 band, and DHCP is turned off on the AP.  And both the router and access point have been recently purchased from DLink.

Also, one of the laptops we have connected to the AP was right underneath the AP.  The connection quality was excellent and rated at 65 Mbps.  What transfer speeds should we be getting between local computers?  I tried sending a file to the server and it averaged 5-6 MB/sec.  But when we tried opening a database application, I monitored the transfer rate, and it was below 2 MB/sec.  I don't know if you guys have experience with this and would like to comment.
Avatar of Craig Beck
Craig Beck
Flag of United Kingdom of Great Britain and Northern Ireland image

Link to home
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Your connection speed and actual throughput are going to be different with the throughput being much lower. I think I saw a rule of thumb for wifi somewhere that said any actual data rate over 50% of the connection speed is considered a good rate.

Don't forget that your network speeds are in bits per second and your application transfer rates are in bytes per second.

I suspect that the database transfer rate is similarly slower wired to wired but you would have to test that to confirm.
Please provide the router model # so we can assist you further.

 Thank you.
It should communicate on the strongest AP. I have mine set to different SSIDs so I know which one I connect to.

I have an Amped Wireless router and repeater and I have the router's SSID as Pinkiepie for the main network and PinkiepiePinkiepie as the repeated main network. The repeated name lets you know it's the repeated (extended) network.

You may want to name yours epichero_R and epichero_AP to differentiate so you know what device you are connected to. Or if one device is on the west side you can call it epichero_west_side and epichero_east_side of the house as well.
If you use any kind of Wireless configuration utility (or Windows' own, for example) the above solution (naming each AP's SSID individually) won't work for you if you can see both APs all the time.

Especially as is the case for Windows PCs, the Wireless connection is determined in a pre-defined preference order when using the Windows configuration utility, so if you have two different SSIDs and you can see them both you will always connect to the first one in your WLAN list (under the Manage Wireless Networks menu).  This would then mean that you could be connecting to the furthest AP when you're actually right next to the most suitable AP.

I reiterate the point that the client won't necessarily connect to the AP with the strongest signal unless the signal from one AP falls below a certain threshold usually.
Craigbeck, would you elaborate on thresholds?  I don't think that Windows offers this option so I'm not very familiar with it.