Multiple APs with same SSIDs

I have a new client who is running three (3) BUFFALO AirStation HighPower N450 Gigabit Wireless Router - WZR-HP-G450H; one is configured as the router/firewall/AP and the other two are just configured as APs.  All three of the APs are hard wired into the network via CAT5, thus, using a wired backhaul.  The APs are not part of the WDS system.  Rather, all three APs are setup independently with the same SSID and pass phrase, but all three have different channels - 4, 6, and 11.  My clients uses a remote EHR system that they access via Citrix.  Numerous times a day the Citrix session freezes and forces the users log out of and back into Citrix.  Needless to say, this is both time consuming and frustrating for the client.  Any ideas on how to remedy this situation?
LVL 1
YortAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Ken BooneNetwork ConsultantCommented:
Well it is okay and perfectly normal to have multiple AP in an org with the same SSID.  The problem that sticks out to me is the channel assignments.  In and 802.11b/g world there are only 3 non-overlapping channels that should ever be used - channels 1, 6 and 11.  Right now you have two radios that are overlapping one another - the one ones on channels 4 and 6.  The first thing I would do is change the radio currently on channel 4 to channel 1.  Right now if those radios can see each other they are probably causing interference with each other.  Have no idea if that is causing your problem or not, but that is a problem.
0
YortAuthor Commented:
@Ken Boone CCIE #4649,

Thank you for your quick response.  I will give this a try and report back.  It will be a few days as I am still obtaining access credentials from the prior IT shop (oh what fun)! :)
0
YortAuthor Commented:
@Ken Boone CCIE #4649,

We are going to implement your suggestion in the next few days, along with a few other recommendations we have received.  I will post back in a few days to provide an update.
0
What were the top attacks of Q1 2018?

The Threat Lab team analyzes data from WatchGuard’s Firebox Feed, internal and partner threat intelligence, and a research honeynet, to provide insightful analysis about the top threats on the Internet. Check out our Q1 2018 report for smart, practical security advice today!

Ken BooneNetwork ConsultantCommented:
No worries.
0
YortAuthor Commented:
@Ken Boone CCIE #4649,

Sorry for the delayed follow up. We implemented your recommendations and the problem persists. Any other suggestions?
0
Ken BooneNetwork ConsultantCommented:
A few questions...
Do the clients lose connections to anything else?  i.e. Web browsing
Does DNS stop resolving when this happens?  
Is the only thing that quits Citrix?

If the answers are No, No and Yes then I would ASSUME the following:
#1) The problem is not related to your wired/wireless network.
#2) The problem could be bandwidth related
       Are you monitoring your internet bandwidth?  If so see if you are heavily utilizing your internet circuit when the problem occurs.
       It may not be a bandwidth on your end, but I suspect the remote location has other clients and will claim it is not them
#3) The problem could have something to do with the remote end.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
YortAuthor Commented:
The clients lose connection to everything.
0
Ken BooneNetwork ConsultantCommented:
So have you determined if they are losing wireless connectivity versus internet connectivity?

If they are dropping wireless and then reconnecting, can you determine if when this happens, are they all on the same AP or are they on different APs?  Does this drop occur across all the APs?

If you suspect the APs, have you checked their firmware version to see if there is an updated version available?  If so I would update them.
0
YortAuthor Commented:
@Ken Boone CCIE #4649,

Based on your questions above, we did a bit more digging into the buildings history and found a lead based walls in the room that used to house an xray machine. We relocated two of the APs to the best angle, and everything is firing as it should.  Thanks!
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Wireless Networking

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.