Q: Lion WiFi Connection Problem

Tom, I only said that because I had a problem one day, and i deleted the mail plist files from the preference folder, one day, and I guess icloud is tied to the plists some how, anyway, this was for the Mail program that i deleted the plist files... oh my goodness... what a mess it  created... lucky for me i had the original ones on my Time Machine backup. I then reinstalled Lion, and everything was ok. I would suggest if you deltet any files that are like... com....plist that you have backed those files first. Tom, i know it was like that with Snow Lepord, but I am not so certain that it is the same with Lion, and iCloud, but you may be right... I only know I had a bad experience when I deleted a few plist files.

I solved my problem today. Just changed the modem router from ZTE to TPLink (menas 801 BG to 801 N) reset SSID config and voila. no more drop outs.

It seems that indeed Lion is very picky in terms on interacting with some (old) rourters. (mine was like 6 years old).

Gotcha CTD  Did you see this? http://news.cnet.com/posts/?keyword=.plist

It seems that the old G routers that were 54 Mbit/s there is still no problem... those things are bullet proof... but the ones that are compatible with a/b/g/n seemed to hog the 2.4 Ghrz range... the new N routers which ar 5 Ghrz onlygives better connection.

FYI, I had updated my router to an Airport Extreme in December and it made my problem worse.  It turned out to be an old modem that was the issue.  I had upgraded to Comcast Blast and I needed a modem that could support DOCSIS 3.0.  Once I got the new modem, the problem went away.  Just so you know.

Thank you. i am reading it this moment. ..... Very Interesting!

Message was edited by: Carlo TD

Make sure you scroll down:

http://reviews.cnet.com/8301-13727_7-10439251-263.html?tag=txt;title

i understand. The only thing is that this article was written in jan 21, 2010  OS X Lion came out in June of 2011.

Hi, second attempt was successful, thanks also to an IT engineer (friend of mine) that helped me to understand what I was doing wrong. As I told in a previous post I connected a new router (tp-link) to the provider router (huawei echolife bm626 wi-max). The two routers are connected through an ethernet cable. It is now two days that it is working with no interruptions at all, switching off MBP, living it on and closing the lid ecc.

With this configuration my MBP has no more direct connection with the huawei and it has a wireless link with the tp-link.

My conclusion of this story is that there must be some kind of compatibility issue between lion and some routers (not all) located in the wireless protocoll, (maybe gphoney can tell us if it is at TCP level or around it). Most of the people are having no problem with lion, someone posted that apple has problem with linksys and many others have solved just replacing their router. In my home in italy I have no problem at all with the router there, I have problems here with this huawei, that's why I  wanted to try to connect my MBP to a different router and, so far, it is working. I cannot simply replace my router because mine is a wi-max internet-connection.

So , gphoney, I don't think there is anything else we can test because, if it is a protocol problem, it must be solved either by apple or by those particular routers manufacturers updating their drivers, and here I don't know who should do it; I tried to send an e-mail to huawey to see if they are aware of this problem, they don't even answered, there could be even a commercial problem involved that we'll never know about. Thus there will be no update at all. (remind the flash story with iOS5)

I will post again if my connection continue to work well.

Just for someone that want to try this solution, this is what I did: I put a new router (tp-link) between my MBP and the provider-router(huawei),  wireless on the huawei has been disabled, all the provider configuration (wi-max) has been left as it is, dhcp is on with the default IP net 192.168.1.1.

On the tp-link side: changed the lan network address to 10.1.1.1, also here the dhcp is on, wireless is on.

One LAN port of the huawei is connected to the WAN port of the tp-link.

Both routers, one at a time, must be configured using a cable, It is better to create a new clean position in MBP-network-preferences (ethernet to configure the routers and then wireless to navigate), there is no need to erase the other positions that you already have. Obviously when you configure each router, since they will have different network address, you have to change the network address on your Mac to match the one of the router. When everything is ready, switch the routers off, connect one LAN port of the old router to the WAN port of the new one using an ethernet cable, then switch on the provider router first, then the second router (the one closest to the computer), set the wireless connection on your computer with with dhcp on

Almost all routers are sold with the default address of 192.168.1.1, so when you will change the new one to 10.1.1.1 and save the configuration the screen will disappear and you have to reconnect to it using the new IP, just keep this in mind.

I hope it is clear.

It's OS X, nothing has changed. Preference files are safe.

I think you ment to say 10.0.1.1 anyway i dont know the difference between setups of 192.168.1.1 or 10.0.1.1 or 172.16.1.1     ....I think the Apple Extreme/ Time Capsule defults to 10.0.1.1 but i just checked my router, and i must have changed it a long time ago because my settings are 192.168.1.1 other than that i  am not sure or dont understand.

all private network must use address 192 or 10. They are not visible to the public, that's why they are called "illegal numbers". This system has been created because the four groups of digits of the IP number wouldn't be sufficient to hold all the computers on earth.

Belumire,

I hate throwing money at this but I think the Genius is right.  I got ride of my old Linksys router and replaced it with an Airport Extreme at home and I no longer have wifi problems.  I do travel for work exstensively and am at the mercy of hotel networks and routers but my Airport Express keeps the drop offs to a minimum.  One thing I did do was update the firmware on the Airport Express and all seems to be working well.  I had to make a trip to the Genius bar myself a few weeks ago and he seemed to fix the issues I was having.

Maybe Apple needs to scan these forums to see what's going on outside of Appletopia. But that's my opinion.

renzofromroma wrote:

 

all private network must use address 192 or 10. They are not visible to the public, that's why they are called "illegal numbers". This system has been created because the four groups of digits of the IP number wouldn't be sufficient to hold all the computers on earth.

Read the article Private IPs .

sorry, in  my previous post I forgot the DNS. In the nework preferences, select the wireless connection > advanced, on the DNS tab add the IP number of the router closer to your mac , mine is 10.1.1.1.

anyway, this morning I've swiched on my MBP and the connection is perfect (I leave both routers always on).

The funny thing of this tp-link router is that it has a usb connector where it's possible to connect a 3G-modem and is possible to set either usb or wireless or both choosing which connection must be set first. This way, if for any reason the wireless provider is having problem you can switch to a different one using this modem. Nice feature.

satcomer, thanks for that article. it explains much better than me.