Solved Wireless keeps dropping only on 1 network

July 21, 2014 at 10:01:46
Specs: Windows 8.1 SP164-bit, Intel(R) Core(TM) i5 CPU M 480 @ 2.67GHz/8.00GB RAM
My Broadcom 802.11n wireless network adapter keeps dropping only on one particular network...our guest network at work, which it has previously worked on just fine. Sometimes flushing the DNS will buy me a few minutes. Sometimes uninstalling the adapter itself and rebooting might work (momentarily), but nothing stays. I can see it issuing out the lease for 24 hours on the server. I can delete its lease and it will reissue a new IP but that may or may not work. If it connects, it will appear to be connected (bars on the wireless icon) but a web page won't load.

The connection is fine on other networks, like at home and at church. I've also played around with different versions of the driver, but still the same.

Thoughts? (I'm leaning towards DNS or DHCP issues on the server myself...but I'm not the sys admin for it...)

Acer Aspire 7741G-6426 running Windows 8.1 32-bit
Guest network runs over Cisco's Meraki Cloud
Home network is AT&T U-verse


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✔ Best Answer
July 23, 2014 at 08:23:01
No...I logged into the server and deleted the lease in DHCP there. Side note, what seems to have been the "fix" was an accidental power loss to the T1 lines by an AT&T tech who was installing a router for us yesterday in preparation for an upgrade next month. :) I still had issues after the server and TMG were rebooted yesterday, up until the tech did that!


#1
July 22, 2014 at 07:28:25
You might want to look into the DHCP server. We had issues with ours when all the IP's got used up. When that would happen (and trouble arose) we'd reboot the DHCP server and it would be fine again for a while.

Eventually we had to go to a /21 subnet for the "guest" WLAN since everybody and their dog has a smartphone and a pad now and we were regularly running out of IP's (and having to reboot the DHCP server) on the old /24 subnet too often.

No guarantee that'll fix the issue, but it might work. It's definitely worth a look.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#2
July 22, 2014 at 09:45:44
Well, they rebooted the server and TMG this morning and I was bale to get on for a bit then it dropped again. I deleted my lease in DHCP, disconnected from the network, flushed dns then reconnected and have been back on again since...but it's still early in the day! :)

We're not out of IP's (yet) because our guest network isn't open yet (it was, students bogged it down with Youtube to the point that the academic programs (running on App-V (gag - another story)) couldn't save their work, so they took it "down")...I was testing it to see how feasible it would be in the near future again. :)


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#3
July 22, 2014 at 12:06:24
You need to apply some restrictions like disallowing access to YouTube or you'll find your guest network congested all the time. I try to restrict access to all bandwidth intensive websites on the guest network or by lunch time, nobody would have any access at all.....lol

I don't know that flushing the DNS is going to do anything as this isn't likely to be a DNS issue.

DNS resolves IP's to hostname.........period, end of story. You're having connection issues.

When you say you deleted your lease I'm assuming you did the following at the command line:

ipconfig /release
ipconfig /renew

If not, you'll need to in order to get a new lease.

I'm hard put to remember exactly what the issue with our DHCP server was. I'm not responsible for it. But the fellow who does run it explained it to me. Something about leases not being released by the server or something like that. So, over time, you'd run out of IP's even if you didn't have a full load of connections to the DHCP network.

If you're keeping your connection to the guest network after rebooting the DHCP server, it would look like your DHCP server was having a similar issue to ours. If this is the case, you'll have to keep an eye on it as over time (weeks/months) ours would require this treatment again.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#4
July 23, 2014 at 08:23:01
✔ Best Answer
No...I logged into the server and deleted the lease in DHCP there. Side note, what seems to have been the "fix" was an accidental power loss to the T1 lines by an AT&T tech who was installing a router for us yesterday in preparation for an upgrade next month. :) I still had issues after the server and TMG were rebooted yesterday, up until the tech did that!

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#5
July 23, 2014 at 08:56:19
That's interesting.

You wouldn't think the issue you were having would be fixed by resetting your external link AND, wouldn't only affect the wireless network (as compared to both wired and wireless).

I sure hope it remains "fixed" for you. Thanks for getting back to us to let us know what fixed it.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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