Solution Powerline Extender Acting as the DHCP server
This Article Applies to:
TL-WPA7510, TL-WPA9610, TL-WPA8730/8630(P) V2, WPA4220 V3, etc.
Problem Description/ Phenomenon:
What is Smart DHCP, and How does Smart DHCP work? Visit TP-Link Smart DHCP Makes Network Configuration Simple.
Some users may find that after the power outage or router’s rebooting, even after router’s internet is back and up running, client devices still get IP address from powerline extender, and cannot connect to the internet.
Note: if router loses internet and then goes back afterwards, powerline extender will do a scan automatically, if it detects another DHCP Server is running, it will disable its own automatically (when powerline units remain paired), and the devices will get IP address from main router then access the internet through that.
Troubleshooting Suggestions:
1. Double check if the main router’s internet is actually back ON and working fine.
To confirm this, wire a computer or laptop to another LAN port of the router using an Ethernet cable, leave the main powerline adapter connected to the LAN port of the router as well, check if you can access the internet successfully on the computer or laptop. If yes, that means the router's DHCP server is up and running; If not, you will need to check what's wrong with the router after the reboot or power outage.
2. Make sure the powerline adapter and extender are still paired (house LEDs are ON), show us the IP address on the clients devices. Compare that when the internet is good and when it is not.
How to check the IP address on a computer: https://www.tp-link.com/support/faq/669/.
If your model is not listed or the issue persists, please report back with the information below to help locate the issue.
Or send a support email to TP-Link technical support with title ‘[Forum ID 265692] Powerline Extender Acting as the DHCP server’ to get further assistance:
1. How did you find out powerline device's DHCP server does not work properly? Did you often reboot main router or is there often power outage in your house?
2. Does router’s internet work fine at that moment?
3. LED status on both powerline units.
4. Brand and Model of router, the network topology, for example:
ISP modem --- Router Archer C7 --- PA8010 .... <powerline> ...WPA8630P --- Asus laptop model X.
5. Model & OS of devices that connected to wireless powerline unit.
6. Model number & firmware and hardware version of your powerline KIT, update the firmware if it is not the latest version:
How to update the firmware of the powerline adapter using the tpPLC Utility: https://www.tp-link.com/support/faq/1091/
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TL-WPA4220 with 5.0 EU on beta dhcp stopped after static IP set up. Love it, thanks a lot :)
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Please advise which FW to get for TL-WPA4220 V5 (EU). The link you posted for official FW only lists HW rev V1 to V4
EDIT I was getting the download page for Austria which doesn't list V5, but when I force it to the global website I do see a V5 release:
https://www.tp-link.com/en/support/download/tl-wpa4220-kit/v5/#Firmware
TL-WPA4220(EU)_V5_1.0.1 Build 220613
Assuming that's the one I need
Thanks!
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One more remark:
I have DHCP client also off (fixed addresses) yet the log still says DHCPC started:
1 INFO 0days, 00:00:00, LAN:Attach mirror0 to stack.
2 ERROR 0days, 00:00:00, SNTPC: select sntpc local port 29835..
3 INFO 0days, 00:00:00, LAN:Set interface mirror0 ip=192.168.89.11 netmask 255.255.255.0.
4 INFO 0days, 00:00:00, DHCPS: Dhcps has stopped.
5 INFO 0days, 00:00:00, HTTPD: Http server start!
6 INFO 0days, 00:00:07, DHCPC: Start DHCPC
7 INFO 0days, 00:00:14, DHCPC: Recv OFFER from server 192.168.89.1 with ip 192.168.89.11
8 INFO 0days, 00:00:57, DHCPC: Recv OFFER from server 192.168.89.1 with ip 192.168.89.11
And with this latest FW there is still instability: there are 4 devices forming the network and about every 30 minutes or so the connection is briefly unavailable
I'm pinging the router, and for a few seconds it is not reachable, but wifi is up and connected. Also can't reach any of the TPlink devices web interfaces.
I checked the logs of all 4 devices, nothing in there when the disconnect happens!
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Hello @peturdainn
Thank you for reporting the issue, besides set up a static IP for the wireless powerline unit, make sure you have set up DHCP Server OFF as well.
For TL-WPA4220 (EU), you could also download latest firmware.
https://www.tp-link.com/en/support/download/tl-wpa4220/#Firmware
If the same happens, can you share a photo of the current DHCP setup on the WPA4220, and a photo of firmware in the Build number, model of router and network map, thanks.
Some local website may not list the latest firmware, i will share it with related team for an update.
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@Solla-topee please find the requested info below.
The MikroTik is in hotspot mode and has a switch attached on which the transmitter for the 4 TP-link units is attached. Reducing the number of devices to two doesn't change a thing, we already tried that...
Peter
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Hello @peturdainn
As double-checked, the log does not say DHCPS- server has started it only shows the powerline unit working as a DHCPC, the client which gets an IP address from local DHCP server 192.168.89.1. Here is a part of log on #145 for comparison.
If you use the Wi-Fi power line unit as AP, please do not pair the powerline kit, otherwise there is a loop in your network.
Example: router--switch--WPA4220 #1， router--switch--WPA4220 #2 ， make sure the extenders are not paired to each other.
Usually you do not need a switch connect to the powerline extender, the powerline extender receive signal from the main powerline adapter through house powerline.
Recommended network topology : router-- main adapter ______House Powerline ___extender powerline unit.
We created a support email TKID220834919 to look into your case further, you could reply to support ticket and our support will assist further.
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Solla-topee wrote
If you use the Wi-Fi power line unit as AP, please do not pair the powerline kit, otherwise there is a loop in your network.Example: router--switch--WPA4220 #1， router--switch--WPA4220 #2 ， make sure the extenders are not paired to each other.
Usually you do not need a switch connect to the powerline extender, the powerline extender receive signal from the main powerline adapter through house powerline.
Recommended network topology : router-- main adapter ______House Powerline ___extender powerline unit.
We created a support email TKID220834919 to look into your case further, you could reply to support ticket and our support will assist further.
@Solla-topee Can you elaborate on that?
What are 'main adapter', 'house powerline' and 'extender powerline' in your reply??
The kit contains 3 devices:
- one is plugged in at the router: TL-PA4010
- two are the AP placed in the house (WPA4220)
We bought 2 kits, and use only one TL-PA4010 at the router (the one of the second kit is still in the box)
We paired 4x AP (WPA4220) 'wifi extender' to the TL-PA4010 and distribute them in the house
Where is the loop? This is literally in your documentation:
https://static.tp-link.com/2020/202005/20200526/7106508720_TL-WPA4220%20KIT&TL-WPA4221KIT_QIG.pdf
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@Solla-topee Can you please provide an update for those of us with WPA9610? This article is supposed to address that product too. Do any of the firmwares posted support that device? If not can you please advise when a firmware will be available? It's been years, please help.
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