Clients on AP losing internet connection, but staying connected to the AP

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  • Updated 2 years ago
Hi,

Our network equipment is mostly built up of HP Procurve devices, and connected to the edge switches are some AP 230's and some AP 120(1)'s.
We've had a strange issue where clients would randomly lose internet connection but their device would say that the connection was fine.
We are getting more and more of these complaints (almost) daily.

If anyone knows a solution to this problem please feel free to post.

Kind regards,

Dennis
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Dennis

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  • completely at a loss

Posted 2 years ago

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Steve Kellogg

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Until you hear back from someone more knowledgeable, here's one follow-up question for you and a note about a possibly similar issue that I experienced.

Question:  Do you know if this is happening to clients on all of your APs or only when they're connected to certain ones?

My experience: I had two switch ports with incorrect VLAN configuration, so that clients could connect to the AP's that were  on those ports but couldn't find their default gateway.

Good luck!

Steve
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Dennis

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Hi Steve,

It happens to random clients on random devices, once i reboot the device things work fine for a while, but then after a certain time has passed the issue randomly pops up somewhere.
And the thing is, the clients would have had a working internet connection, but then all of a sudden pages won't load and traffic just seems to stop at the AP.

Kind regards,

Dennis
(Edited)
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BJ, Champ

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Without knowledge of your network or environment, I would begin troubleshooting by picking a client, get its MAC address and plug it into client monitor. I would be watching for roaming issues between APs.

Best,
BJ
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Dawn Douglass

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HI Dennis,

Did the client monitor reveal anything useful?
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Dennis

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Hi Dawn,

Sadly the client monitor did not reveal anything, however we may have traced this issue back to our firewall. however the weird thing is that wired clients have absolutely no issues.
I will look into this further and i'll let you know what i run into.
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Dawn Douglass

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Did the firewall logs reveal anything useful?  

Our last firewall stopped passing traffic correctly right before it stopped passing traffic, forever.  

Does every client on that particular AP stop functioning?  That's what I think you are saying in an earlier post.  

When this happens:
Can you ping out from the AP?  Can you ping out from the client?  Can you resolve DNS from both the AP and the client?

Does the issue affect different client types?
(Edited)
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Arison Mercado

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Can you confirm if its happening on a network that requires a capwap portal for authentication or WPA2 enterprise?
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Dennis

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Hi,

@BJ,

This issue also occurs in environments where there is only one AP, clients just seem to lose connection even if they are within a 10 meter radius around the AP. (not actually losing connection the AP but to the WAN)

@Arison Mercado

We use personal wpa2 keys for our ssid's

Kind regards,

Dennis
(Edited)
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Pieter Pardoel

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hello Dennis,

we have the same problems in our sites where we use just one AP121. In all the other sites we have no problem with more then one AP121. We also use WPA2.
HM is 6.4r1 and the firmware on the AP's is HiveOS 6.4r1d.2111
Anyone who can help wit this issue?
Kindly regards,
Pieter
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Mark Techa

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I'm throwing this out there to spark some troubleshooting outside the APs. 
Do you have any wired clients that are getting the same issue?
Could it be a DNS or IP address issue? Maybe something might be up with your server there?
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Benjamin Nasse

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I have this same issue and it just suddenly started about 2-3 weeks ago. A client will just suddenly lose their ability to get out to the internet even though they appear to remain connected to the wifi. Everyone else in the general vicinity seems to get out just fine. I did reboot of the client and still cannot get out. After a few hours the client suddenly starts working again. 
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Dennis

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@Mark
Hi Mark
We have possibly traced the issue back to our firewall.
We are going to monitor the interfaces on our firewall to see if they're not filling up.
I'll post my findings in this forum post.
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Edward

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@Dennis, did you have any luck tracing the issue? We too also have the same problems you mentioned with little luck finding root cause.
(Edited)
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Dennis

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we did notice a slight decline in this issue occuring, but it will still happen randomly to +/- 5 clients.

The fact that our firewall' interface was clogging up was also a factor but we've been able to fix that side of the issue.
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Andrew Mcallister

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We have what seems to be the same issue on several APs with several clients.

They are connected and they look good on the Hivemanager but don't get internet/network access. 

Rebooting the client does not help but doing a config update and reboot of the AP does for awhile

The APs concerned are 330's and 230's