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  1. #1

    EAP245 wifi clients time out with Internet requests

    Model : EAP245

    Hardware Version :

    Firmware Version : EAP245(US)_V1_161116

    ISP : [/COLOR]

    Hi,
    I've got an EAP245 configured via the web interface. It's a home setup with a basic business-class set of devices (TP-Link TL-SG1024 swtich and TL-R600 VPN router/firewall). My wifi clients (phones/tablets etc) periodically time out with web requests but recover and usually complete the request after about 30 seconds without becoming disconnected from the EAP. It happens close or far from the router and the connection is maintained and is strong the entire time. I had upgraded form an Archer C50 where this wasn't an issue (just the regular weekly reboot of that VPN router when it takes a DHCP holiday). I've played with static IP's, Google's DNS / ISP's DNS and not seen any improvement.

    I honestly don't know how to troubleshoot this. If I was at work, I'd toss it out or not buy from TP_Link to begin with. My first thought is to fire up and set it up via the controller software or use different SSID's for the 2.4 and 5Ghz bands. Any suggestions?

  2. #2
    Members R1D2 is on a distinguished road
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    Do you experience such delays on wired devices connected to the same switch which feeds the EAP, too?

  3. #3
    I really haven't experienced such timeouts with wired connections. If the switch is going bad, I'm assuming it should be completely removed from the network while I'm testing? I might also set up that C50 again instead of the EAP for a few days. I'm just hoping the problem is a setting in the EAP as I really like that device and the price I got it for (new, but past my in-store return window).

  4. #4
    Members R1D2 is on a distinguished road
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    I guess the problem is in your network setup. But to say for sure, much more information about your network topology and setup of the devices would be needed.

    The difference between Archer C50 and EAP is that the C50 is a WiFi router with a separate network and a separate DHCP server, while the latter is an AP only depending on a working DHCP server if you insist on using dynamically assigned IP addresses. Since you mentioned "DHCP holidays" (what's that?) and weekly reboots of your router I would recommend to take a closer look to the setup, for example by testing wether the delay also appears on wired devices and if it happens also if your wireless clients use static IPs together with another DNS server. As a last resort you could test the EAP connected to the LAN of the C50 to see wether your router - respective its setup - screws things up.

  5. #5
    Thanks again you for your reply. You've given me a few ideas to try.
    The TL-R600 seems to be known to have flakey DNS/DHCP issues within a week and there hasn't been new firmware for a while. Those issues present differently and are resolved by a hard reset. Since I added the EAP a few weeks ago, the wifi problem began, but seem to be getting worse. The switch and TL-R600 VPN router (only active DHCP service) + modem are located in a 6U cabinet where wifi is obviously not effective. I can try the C50 again as an AP, or with some difficulty, bypass the core switch entirely.

  6. #6
    The LAN setup seems like a basic star topography with two AP's.
    Modem -> TP-R600 (Firewall/Nat/DHCP/VPN) -> TL-SG1024 (rack switch) all in a 6U cabinet.
    Also in cabinet: NAS, NVR (cameras on separate physical switch with own POE), Rasp Pi, TL-WPA4220KIT AV500

    EAP245 is at an endpoint or the C50 was setup as an AP (no DHCP)
    TL-WPA4220KIT has wifi 2nd device in detached garage with a TL-WR802N nano router setup in AP mode with DHCP disabled (because that AV kit doesn't like to pass around DHCP packets after 24 hours). They don't overlap enough to confuse even the dumb android wifi.

    Also on network:
    Wifi:
    5 chromecast audio
    2 chromecast video
    3 wemo
    2 phones
    3 tablets
    1 thermostat
    1+ laptops

    Wired
    1 PC
    2 steam links
    3 android boxes
    1 ps4

    Basically, I got to buy and wire everything the way I wanted to during a reno but now I've got some - I believe the technical word is - "gremlins".

  7. #7
    Hi Canuckie,

    how often does the problem happen? And when the problem happens, will all the other devices have the same problem at the same time?

    May we can make an appointment for a remote access by using TeamViewer, so that we can check the configuration for you directly.

    Best Wishes,

  8. #8
    Thank you Tom. I'll let you know when I've exhausted all my testing.
    For now, I've plugged the EAP directly into the firewall (where the another port on the firewall is plugged to the the rack switch). I've set up an old laptop on wifi logging pings and a PC (wired to core switch) logging pings. Speed tests from my phone (<10' from EAP) and an Android box / PC are pretty consistent showing me close-enough to my 100/10 service. From time-to-time, I do see tests result in 2-3Mbit/10 from a device I test on whereas another device still tests fine (wired and wifi). 3 minutes later, I've seen their results flip. I'm suspecting this is more of an ISP issue at this point where speedtest.net hosts are being throttled differently. I've setup my old C50 router and is on standby to swap with the EAP. I suspected the EAP because it was the only change that happened shortly before observing these Internet timeouts.

  9. #9
    Quote Originally Posted by Canuckie View Post
    From time-to-time, I do see tests result in 2-3Mbit/10 from a device I test on whereas another device still tests fine (wired and wifi). 3 minutes later, I've seen their results flip.
    You have a 100Mbps/10Mbps line and when you test the speed wirelessly, it only has 2-3Mbps download speed which is not satisfied, right?

    Please note that the speed test result generally has no relationship with the ping test result. (But if there are many devices running the speedtest, which will saturate the bandwidth or airtime, you will get also get some ping latency or ping drops). So here are some test and troubleshooting recommendation:
    1. when you do speed test wirelessly, please make sure there are only one devices do the test. And if you test with several wireless clients, the total bandwidth equals to the sum of all the wireless clients' test result due to the shared property of the wireless network.
    2. Wireless network are easy to be affected by RF interference, this could be other wireless AP, blueteeth device, cordless telephone, microwave oven devices. So please make sure the AP is not near these devices. And if necessary, turn off these devices and test again.
    3. You are also recommended to do some spectrum analysis with tools like inSSIDer, WiFi Analyzer to choose a better radio channel. If the RF environment is congested, it's recommended to use 20MHz channel width as well.
    4. To find out whether the problem happens to 2.4G only, 5G only or both 2.4G and 5G radio, we can try to separate the 2.4G and 5G radio with different SSID for test purpose. Of course, if the 2.4G network is congested, it's recommended to separate the 2.4G and 5G radio, so the customer can use 5G radio only and use the 2.4G network as a backup.

    Best Wishes,
    Tom.


 

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