Help needed connecting to a specific router in a wifi network

Hi lukataylo,

You don't state whether the two routers have different APs (Access Point names), but assuming that they do, then you can simply go to your System Preferences Network pane and under the Advanced button is a list of Preferred Networks. You can reorder these networks by dragging into the order you wish to connect to them, or you can also delete the offending router entirely so you MBP will never try to attach to it.

Regards,
Switon

 

RE: networksetup and airport commands ...

Hi,

I was worried that this was the case. But there is still a solution to your troubles, I believe.

First of all, since you can see both routers in the Preferred Networks listing, why can't you just delete the one on Channel 1 and keep the one on Channel 9? If this doesn't work, then perhaps you can rearrange their order by dragging the channel 9 to the top of the list. If neither of these work, then you will need to change the channel on your Mac. You accomplish this with a well-hidden and poorly documented command called "airport"; it is located in the following directory:
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/

You will need root privileges to change the channel, but try the following command:

Code:

/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -c 9

Hopefully, this will change the channel your Mac is using to 9, thus it should not attach to the channel 1 AP. If you do an "airport -I" it will return information on your network card, and if you do an "airport --help" it will give very brief help on the command's usage. If you end up needing this "airport" command often, then I would add the above directory to your PATH variable so that you don't have to access it using the long directory name.

The "networksetup" commands provide a terminal commandline interface to the options handled in the Network pane of System Preferences.

Good luck,
Switon