08-27-2019 09:29 AM - edited 07-05-2021 10:54 AM
I have a wireless network that is using a 5508 WLC (running 8.3.122.0), and AIR-LAP1142N-A-K9. My users are having trust domain relationship issues with their laptops when connected to WiFi. I have isolated this problem to WiFi by connecting the Laptops directly with a LAN cable and they do not have this issue. I think this has something to do with AP isolation but am not sure. Does anyone have any clue what could be causing this?
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09-04-2019 02:26 PM
This may sound weird but it was the TCP adjust MSS option on the new APs. Unchecking it seems to have fixed the issue.
08-27-2019 03:03 PM
Hi @tombstone1
Can you explain a bit more about what the "trust domain relationship issue" is ?
The end result of a wireless association is that the client session is in RUN state and its traffic is fed into a VLAN (for central switching), or in the case of FlexConnect, the traffic breaks out of the AP onto a VLAN on the attached switch. There should be no impact for the upper layers (AD domain or otherwise). If you are plugging users into a switch port then you may not be making a fair comparison, unless you can prove that they ended up on the same VLAN.
08-27-2019 03:07 PM
08-27-2019 03:57 PM
One VLAN to rule them all!!! Nice ... let's park that discussion. FlexConnect is just an alternative to Central Switching when the controller is central, but APs are spread over various geographic locations - the traffic stays local.
Can you still please explain what this "domain trust issue" is?
08-27-2019 04:03 PM
08-28-2019 06:16 AM
08-28-2019 07:04 AM
No its my Windows 10 Clients. I wish I could update but with the older APs I have they won't work on it.
08-28-2019 07:37 AM
08-28-2019 09:04 AM
Ok, when a computer connected to wifi trys to logon with thier user account they get "The trust relationship between this workstation and the primary domain failed." Though if I take and cable computer in they can log on just fine. This only happens with the newer model APs in the room, not the where the older models are.
08-28-2019 10:41 PM
08-29-2019 06:36 AM
08-29-2019 11:00 PM
09-03-2019 05:10 AM
I'm pretty sure I don't, as I didn't change anything to the setup of the Wi-Fi other than adding new accessp Here's another interesting little tidbit to add to this. My wireless devices cannot print from my cable to printers. So if I plug the wireless devices in to cabling they can print just fine.
09-03-2019 05:50 AM
09-04-2019 01:27 PM
Yes they are all on same VLAN. Its not any of those. The APs should let this all work. The old ones I replaced didn't have this issue. Only thing I can think of is it has to do with the APs. Only change to network was the new APs.
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