Wierless client Disconnets

neilmayf · 05-15-2006

I have a problem with Wireless clients being disconnected unexpectedly.

My belief is that it is due to a high cell over lap in my network.

Equipment details.

I have a several Netgear wg302 & wg102 running in repeater mode with wireless client association (this lets them be both a repeater and an AP).

Main - Wg302.
Networked to main LAN.
Acts as head repeater for 3 other wg302's.
8Db Ant (outside shed).

Dispatch - Wg302.
Slave repeater to Main.
No wired network.
running in repeater mode with client association.
8Db ant (inside shed) .

Repeater 1 - wg302.
Slave repeater to main.
No wired network.
Running in repeater mode with client association.
Acts as a on repeater for GNP1 (wg102).
8Db Ant (outside shed - 100m from main).

Repeater 2 - Wg302.
Slave repeater to main.
No wired network.
Running in repeater mode with client association.
Acts as a on repeater for SSAW, LAMBeam, IBeam ( all 3 wg102's)
8Db Ant (inside another shed - 100m from main).

GNP1, SSAW, LAMBeam, IBeam - Wg102.
Running in repeater mode with client association.
All Have a single wired device (PC) connected.
5Db Ant.

All of the above works fine it is only when a wireless client moves from one area to an other or the client switches from one AP to an other (due to signal fluctuations) that I get thees disconnections (I am using a telnet app on Symbol MC9060-G RF scanner guns).

The cells that overlap are SSAW,IBEAM,LAMBeam & Repeater 2 - All are with in 50m of each other.

(The site physical layout is available if you need it - just mail me)

itsnotme · 05-16-2006

Quote:

Originally Posted by neilmayf

I have a problem with Wireless clients being disconnected unexpectedly.

My belief is that it is due to a high cell over lap in my network.

Equipment details.

I have a several Netgear wg302 & wg102 running in repeater mode with wireless client association (this lets them be both a repeater and an AP).

Main - Wg302.
Networked to main LAN.
Acts as head repeater for 3 other wg302's.
8Db Ant (outside shed).

Dispatch - Wg302.
Slave repeater to Main.
No wired network.
running in repeater mode with client association.
8Db ant (inside shed) .

Repeater 1 - wg302.
Slave repeater to main.
No wired network.
Running in repeater mode with client association.
Acts as a on repeater for GNP1 (wg102).
8Db Ant (outside shed - 100m from main).

Repeater 2 - Wg302.
Slave repeater to main.
No wired network.
Running in repeater mode with client association.
Acts as a on repeater for SSAW, LAMBeam, IBeam ( all 3 wg102's)
8Db Ant (inside another shed - 100m from main).

GNP1, SSAW, LAMBeam, IBeam - Wg102.
Running in repeater mode with client association.
All Have a single wired device (PC) connected.
5Db Ant.

All of the above works fine it is only when a wireless client moves from one area to an other or the client switches from one AP to an other (due to signal fluctuations) that I get thees disconnections (I am using a telnet app on Symbol MC9060-G RF scanner guns).

The cells that overlap are SSAW,IBEAM,LAMBeam & Repeater 2 - All are with in 50m of each other.

(The site physical layout is available if you need it - just mail me)

I'll say this, pay a professional to help you solve the problems.

streaker69 · 05-16-2006

Quote:

Originally Posted by neilmayf

I have a problem with Wireless clients being disconnected unexpectedly.

My belief is that it is due to a high cell over lap in my network.

Equipment details.

I have a several Netgear wg302 & wg102 running in repeater mode with wireless client association (this lets them be both a repeater and an AP).

Main - Wg302.
Networked to main LAN.
Acts as head repeater for 3 other wg302's.
8Db Ant (outside shed).

Dispatch - Wg302.
Slave repeater to Main.
No wired network.
running in repeater mode with client association.
8Db ant (inside shed) .

Repeater 1 - wg302.
Slave repeater to main.
No wired network.
Running in repeater mode with client association.
Acts as a on repeater for GNP1 (wg102).
8Db Ant (outside shed - 100m from main).

Repeater 2 - Wg302.
Slave repeater to main.
No wired network.
Running in repeater mode with client association.
Acts as a on repeater for SSAW, LAMBeam, IBeam ( all 3 wg102's)
8Db Ant (inside another shed - 100m from main).

GNP1, SSAW, LAMBeam, IBeam - Wg102.
Running in repeater mode with client association.
All Have a single wired device (PC) connected.
5Db Ant.

All of the above works fine it is only when a wireless client moves from one area to an other or the client switches from one AP to an other (due to signal fluctuations) that I get thees disconnections (I am using a telnet app on Symbol MC9060-G RF scanner guns).

The cells that overlap are SSAW,IBEAM,LAMBeam & Repeater 2 - All are with in 50m of each other.

(The site physical layout is available if you need it - just mail me)

This sounds like a commercial installation depending upon Netgear equipment?

I would agree with itsnotme, hire a professional to come in, do a proper site survey and install the correct kind of equipment for the job.

wrzwaldo · 05-16-2006

Quote:

Originally Posted by neilmayf

I have a problem with Wireless clients being disconnected unexpectedly.

My belief is that it is due to a high cell over lap in my network.

Equipment details.

I have a several Netgear wg302 & wg102 running in repeater mode with wireless client association (this lets them be both a repeater and an AP).

Main - Wg302.
Networked to main LAN.
Acts as head repeater for 3 other wg302's.
8Db Ant (outside shed).

Dispatch - Wg302.
Slave repeater to Main.
No wired network.
running in repeater mode with client association.
8Db ant (inside shed) .

Repeater 1 - wg302.
Slave repeater to main.
No wired network.
Running in repeater mode with client association.
Acts as a on repeater for GNP1 (wg102).
8Db Ant (outside shed - 100m from main).

Repeater 2 - Wg302.
Slave repeater to main.
No wired network.
Running in repeater mode with client association.
Acts as a on repeater for SSAW, LAMBeam, IBeam ( all 3 wg102's)
8Db Ant (inside another shed - 100m from main).

GNP1, SSAW, LAMBeam, IBeam - Wg102.
Running in repeater mode with client association.
All Have a single wired device (PC) connected.
5Db Ant.

All of the above works fine it is only when a wireless client moves from one area to an other or the client switches from one AP to an other (due to signal fluctuations) that I get thees disconnections (I am using a telnet app on Symbol MC9060-G RF scanner guns).

The cells that overlap are SSAW,IBEAM,LAMBeam & Repeater 2 - All are with in 50m of each other.

(The site physical layout is available if you need it - just mail me)

It's early, but unless I'm missing something here there is nothing wrong with your setup. Are SSAW,IBEAM,and LAMBeam SSIDs? It looks like you are not correctly configured for roaming and that's why you are getting the disconnects (working per spec).

neilmayf · 05-16-2006

The site has a single SSID on all AP's

The names listed are the AP names.

I have done some testing and have found that whe the Clients switch AP's they drop 2-3 packets (this makes the telnet session dropout).

Any ideas/seggestions on this ???

Quote:

This sounds like a commercial installation depending upon Netgear equipment?

I would agree with itsnotme, hire a professional to come in, do a proper site survey and install the correct kind of equipment for the job.

Yes I have talked to the professional's (with lots of dollars it can be solved), this is a problem I have inhereated and it needs to be resolve with minamal cost.

I have come to this foum, after exusting a lot of other options, for any ideas you might have in resolving the problem.

I ask again any Ideas/seggestions ???

Dutch · 05-16-2006

Quote:

Originally Posted by neilmayf

The site has a single SSID on all AP's

The names listed are the AP names.

I have done some testing and have found that whe the Clients switch AP's they drop 2-3 packets (this makes the telnet session dropout).

Any ideas/seggestions on this ???

Yes I have talked to the professional's (with lots of dollars it can be solved), this is a problem I have inhereated and it needs to be resolve with minamal cost.

I have come to this foum, after exusting a lot of other options, for any ideas you might have in resolving the problem.

I ask again any Ideas/seggestions ???

So what you are saying is : I don't want to tell my bosses that I am in over my head, and the advice I've been given would cost money to implement, so now I'm going to ask people on a forum for a freebie to fix the problem I've been tasked with fixing, the same people who normally make a living out of fixing such fubared installations, so I can gain browniepoints with my bosses.

Boy have I got news for you :

It Ain't Going To Happen.

Tell you bosses, that the consultants you've contacted for advice, have informed you that the original setup is hosed, and that they should have gotten professionals to do a site survey and design of the wireless net topology from the start. As they appearently didn't do that, they need to spend the dollars to fix the problem now, or live with it as it is.

Dutch

itsnotme · 05-16-2006

Quote:

Originally Posted by neilmayf

I have done some testing and have found that whe the Clients switch AP's they drop 2-3 packets (this makes the telnet session dropout).

This is normal, telnet/ssh sessions were not developed to be mobile. If they're sitting down and doing a telnet session, they should not be switching AP's anyway so this is not a problem.

If this is the only problem you have with your setup, then I'd be content with the setup.

streaker69 · 05-16-2006

Quote:

Originally Posted by neilmayf

The site has a single SSID on all AP's

The names listed are the AP names.

I have done some testing and have found that whe the Clients switch AP's they drop 2-3 packets (this makes the telnet session dropout).

Any ideas/seggestions on this ???

Yes I have talked to the professional's (with lots of dollars it can be solved), this is a problem I have inhereated and it needs to be resolve with minamal cost.

I have come to this foum, after exusting a lot of other options, for any ideas you might have in resolving the problem.

I ask again any Ideas/seggestions ???

A halfassed installation from the start normally means big bucks to fix the problem later.

Granted, you inherited the problem, but you should go to your boss and tell them that it was a fucked installation to begin with. As long as you didn't have the system implemented then you shouldn't get any flak for it. Tell them that it now needs to be done the correct way, with proper hardware and a proper site survey. After all, what do they want? Another fucked up system or something that will work?

I inherited lots of problems when I took my last job, and I've had NO problems getting the money to fix all the issues. Believe it or not, companies will spend money to resolve stupidity.

neilmayf · 05-16-2006

Quote:

Originally Posted by streaker69

A halfassed installation from the start normally means big bucks to fix the problem later.

Granted, you inherited the problem, but you should go to your boss and tell them that it was a fucked installation to begin with. As long as you didn't have the system implemented then you shouldn't get any flak for it. Tell them that it now needs to be done the correct way, with proper hardware and a proper site survey. After all, what do they want? Another fucked up system or something that will work?

I inherited lots of problems when I took my last job, and I've had NO problems getting the money to fix all the issues. Believe it or not, companies will spend money to resolve stupidity.

I have been qsked to see if there is another way to resolve this problem BY MY COMPANY at minamil cost using existing equipment.

This dissconnection problem is due to the intrduction of mobile barcode scanners (as stated in first post- Symbol MC9060G equipment - I did not make that clear).

I'am looking for options on how to resolve this (if I need to replace equipment I will but I need to exust all options first).

SO has any of you had this type of problem before ??.
Have you any Ideas on way's to fix it ???

(I have 25 years of techinal experance - I'm not asking for a free ride just trying to get a better understaning of this problem and trying to do my job. so cut the static and give me some ideas/seggestions - I'll try them and see if they work and we can all increase our knolwage and expand our minds).

(I know my spelling is bad but I'm a tech. not a manager)

streaker69 · 05-16-2006

Quote:

Originally Posted by neilmayf

I have been qsked to see if there is another way to resolve this problem BY MY COMPANY at minamil cost using existing equipment.

This dissconnection problem is due to the intrduction of mobile barcode scanners (as stated in first post- Symbol MC9060G equipment - I did not make that clear).

I'am looking for options on how to resolve this (if I need to replace equipment I will but I need to exust all options first).

SO has any of you had this type of problem before ??.
Have you any Ideas on way's to fix it ???

(I have 25 years of techinal experance - I'm not asking for a free ride just trying to get a better understaning of this problem and trying to do my job. so cut the static and give me some ideas/seggestions - I'll try them and see if they work and we can all increase our knolwage and expand our minds).

(I know my spelling is bad but I'm a tech. not a manager)

I would say that if you're having disconnects then the problem is that your Netsuck equipment isn't 100% compatible with your barcode scanners or vice-versa. I would replace the Netsuck equipment with proper enterprise access points.. Maybe just buy 1 Cisco and put it in place and see if it works.

Ok, after re-reading a your OP, I have thought of something.

It would appear as though you have three AP's working as a Repeater to a single AP?

If this is correct, then it's quite possible that is your problem. (someone correct me if I'm wrong), but I believe that when you have that many repeaters to a single AP, each Repeater is taking 1/2 of the available bandwidth for the backhaul traffic. So you might in reality not have the bandwidth to stay connected. This is just SWAG without actually seeing the network for myself.

neilmayf · 05-16-2006

Quote:

Originally Posted by streaker69

I would say that if you're having disconnects then the problem is that your Netsuck equipment isn't 100% compatible with your barcode scanners or vice-versa. I would replace the Netsuck equipment with proper enterprise access points.. Maybe just buy 1 Cisco and put it in place and see if it works.

Ok, after re-reading a your OP, I have thought of something.

It would appear as though you have three AP's working as a Repeater to a single AP?

If this is correct, then it's quite possible that is your problem. (someone correct me if I'm wrong), but I believe that when you have that many repeaters to a single AP, each Repeater is taking 1/2 of the available bandwidth for the backhaul traffic. So you might in reality not have the bandwidth to stay connected. This is just SWAG without actually seeing the network for myself.

Thank you.

Have been testing this in a test setup an it looks OK. (yes I have a lot of these units - about 10 wg302 & 25 wg102)

(A little more info for you on the steup - the SSaw, IBeam, LAMBeam & GNP all have terminals running off them - direct conneted to the network port of the AP - all of these run 24 hours a day with no problems - file transfer rates look good. This system is lock to 802.11b ch 1 - all AP's. throughput to the fixed terminals is about 2.2meg. There are on other open systems in the area that I can detect with netstumbler - I'm trying to get hold of a spectrim analiser to see if ther are other interferances - this is a low possablity as the backbone repeter system is working non-stop)

I will check on the compatabilty with netgear & Symbol (symbol did give the last person a verbal garrenty that these units would work on any 802.11b system).

Thank you for the input.

streaker69 · 05-16-2006

Quote:

Originally Posted by neilmayf

Thank you.

Have been testing this in a test setup an it looks OK. (yes I have a lot of these units - about 10 wg302 & 25 wg102)

(A little more info for you on the steup - the SSaw, IBeam, LAMBeam & GNP all have terminals running off them - direct conneted to the network port of the AP - all of these run 24 hours a day with no problems - file transfer rates look good. This system is lock to 802.11b ch 1 - all AP's. throughput to the fixed terminals is about 2.2meg. There are on other open systems in the area that I can detect with netstumbler - I'm trying to get hold of a spectrim analiser to see if ther are other interferances - this is a low possablity as the backbone repeter system is working non-stop)

I will check on the compatabilty with netgear & Symbol (symbol did give the last person a verbal garrenty that these units would work on any 802.11b system).

Thank you for the input.

http://www.thinkgeek.com/gadgets/electronic/80ce/

Can't get much cheaper, and they work really well.. It's worth the investment.

Oh as for your verbal Guarantee, I could take a shit in a box and mark it guaranteed (I have some extra time).

wrzwaldo · 05-16-2006

Quote:

Originally Posted by neilmayf

I have been qsked to see if there is another way to resolve this problem BY MY COMPANY at minamil cost using existing equipment.

This dissconnection problem is due to the intrduction of mobile barcode scanners (as stated in first post- Symbol MC9060G equipment - I did not make that clear).

I'am looking for options on how to resolve this (if I need to replace equipment I will but I need to exust all options first).

SO has any of you had this type of problem before ??.
Have you any Ideas on way's to fix it ???

(I have 25 years of techinal experance - I'm not asking for a free ride just trying to get a better understaning of this problem and trying to do my job. so cut the static and give me some ideas/seggestions - I'll try them and see if they work and we can all increase our knolwage and expand our minds).

(I know my spelling is bad but I'm a tech. not a manager)

I have yet to see any mention of channel configuration...

And one more thing, dictionary.com! If you know your spelling sucks then use it! There are many techs here and using that as an excuse just makes you look stupid.

MikeP928 · 05-16-2006

Quote:

Originally Posted by wrzwaldo

I have yet to see any mention of channel configuration...

And one more thing, dictionary.com! If you know your spelling sucks then use it! There are many techs here and using that as an excuse just makes you look stupid.

I think somewhere in this trainwreck he said they are all on channel 1. So we know this entire system was designed? by an idiot.

FYI: Being a tech instead of a manager does not exempt you from proofreading your communications. And writing like this sure as hell guarantees that you will never be a manager.

Engineers need to have better communication skills than most anyone else. If we don't get it right, no one else using our info ever will. I hope your comm skills are not an indicator of how you do the rest of your job, although from what I can tell, it is an exact mirror of your work.

The roaming feature of 802.11 spec anticipates dropped and retransmitted packets. If your application cannot stand that, you have a real problem. But I think enterprise gear in a well designed environment will solve most of your problems.

Where are you located? I may have a tech with a spectrum analyzer within practical distance.

MikeP

Airstreamer · 05-16-2006

Quote:

Originally Posted by neilmayf

I have been qsked to see if there is another way to resolve this problem BY MY COMPANY at minamil cost using existing equipment.

This dissconnection problem is due to the intrduction of mobile barcode scanners (as stated in first post- Symbol MC9060G equipment - I did not make that clear).

I'am looking for options on how to resolve this (if I need to replace equipment I will but I need to exust all options first).

SO has any of you had this type of problem before ??.
Have you any Ideas on way's to fix it ???

(I have 25 years of techinal experance - I'm not asking for a free ride just trying to get a better understaning of this problem and trying to do my job. so cut the static and give me some ideas/seggestions - I'll try them and see if they work and we can all increase our knolwage and expand our minds).

(I know my spelling is bad but I'm a tech. not a manager)

You know what, bonehead? I've been a tech since I was 18. Even using the Ebonics "new math," that means I've been at this for, say, a bit over 30 years.

I take GREAT pains in proofreading my documentation that is headed "up the dog pile." One of the LAST things I want is some person that has no concept of what I'm talking about to just blow it off because it looks like a fourth-grader in Los Angeles wrote it. Since I can't talk face to face with you and experience your magnetic personality directly, I'm going to base some of my judgement on your written presentation.

It would do you well to sign up for a course in basic written communication.

Edit: Everybody makes mistakes on here, but then again, this is not going to my manager!

05-15-2006	#1 (permalink)
neilmayf Registered Member Join Date: May 2006 Posts: 4	Wierless client Disconnets I have a problem with Wireless clients being disconnected unexpectedly. My belief is that it is due to a high cell over lap in my network. Equipment details. I have a several Netgear wg302 & wg102 running in repeater mode with wireless client association (this lets them be both a repeater and an AP). Main - Wg302. Networked to main LAN. Acts as head repeater for 3 other wg302's. 8Db Ant (outside shed). Dispatch - Wg302. Slave repeater to Main. No wired network. running in repeater mode with client association. 8Db ant (inside shed) . Repeater 1 - wg302. Slave repeater to main. No wired network. Running in repeater mode with client association. Acts as a on repeater for GNP1 (wg102). 8Db Ant (outside shed - 100m from main). Repeater 2 - Wg302. Slave repeater to main. No wired network. Running in repeater mode with client association. Acts as a on repeater for SSAW, LAMBeam, IBeam ( all 3 wg102's) 8Db Ant (inside another shed - 100m from main). GNP1, SSAW, LAMBeam, IBeam - Wg102. Running in repeater mode with client association. All Have a single wired device (PC) connected. 5Db Ant. All of the above works fine it is only when a wireless client moves from one area to an other or the client switches from one AP to an other (due to signal fluctuations) that I get thees disconnections (I am using a telnet app on Symbol MC9060-G RF scanner guns). The cells that overlap are SSAW,IBEAM,LAMBeam & Repeater 2 - All are with in 50m of each other. (The site physical layout is available if you need it - just mail me)

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