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TL-WPA4220KIT and wifi extension problems: wrong ip-range

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TL-WPA4220KIT and wifi extension problems: wrong ip-range

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96 Reply
Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-26 03:39:28
Setting a fixed IP address on each WPA4220 has helped greatly; until the WPA42220's decided to forget that they had been configured with fixed IP addresses,
and resumed their novel practice of self-assigning themselves IP addresses. Perhaps the WPA4220 firmware is clever enough to detect conflicts, and re-assign itself
a new IP address if that occurs; but that is just a guess on my part. The obvious solution is for the devices to behave like normal DHCP clients; the mystery is why
the TPLINK engineers have not figured this out.
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#52
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Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-26 03:42:31
The WPA4220 does not act as a DHCP client, and never issues a request to a DHCP server; so I do not see how setting up a reserved IP address will be of any help.
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#53
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Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-26 03:49:33
And pray that the device in fact remembers to use the fixed IP address it was assigned. Five of the devices in my network decided to forget the assignment, and go back to using IP roulette.
Another five are still using the fixed IP addresses I assigned. I have no clue why some devices remember, and others do not.
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#54
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Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-26 03:53:49
For how long did it work like a charm? The TPLink device has most certainly self-assigned itself another IP address, which will work until some other device is assigned that IP address.
It might take weeks or months before the conflict occurs.
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#55
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Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-28 00:25:39

slotest wrote

The WPA4220 does not act as a DHCP client, and never issues a request to a DHCP server; so I do not see how setting up a reserved IP address will be of any help.


If the factory IP address is 192.168.1.1 for all, two of them in the same network should conflict if you make no changes to the IP address right?
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#56
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Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-29 21:14:36
There is actually no way to set a "fixed IP address" on the WPA4220. You can only set "preferred" IP address, which the device will use first when looking for a suitable IP address.
But if the device discovers that its preferred IP address is in use, it picks other values until it finds one currently unused.
And at that point, there is no way to tell what its preferred IP address is; the http display only shows the IP address currently in use!

I had 6 WPA4220 devices configured with distinct preferred IP addresses; they used those addresses for about a month, then something caused them all to pick other (random?) addresses
(sadly within the range handed out by my DHCP server).
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#57
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Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-29 21:18:06
No, since the factory default IP address i(192.168.1.1) is just a preferred IP address, not a fixed IP address.
If multiple WPA4220s are connected with the same preferred IP address, most with discover a conflict and pick another IP address.
I have not yet done enough testing to learn whether a WPA4220 abandons an IP address which some other device starts using.
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#58
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Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-29 21:23:34
That technique worked for me for a while; but eventually something caused my multiple WPA4220s to stop using their preferred IP addresses, and they all picked random IPs.
You can not set a "fixed" IP address on the WPA4220, only a preferred one.
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#59
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Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-29 22:09:39
Latest test result: if a WPA4220 is using an IP address, and a DHCP server assigns that address to some other device,
the WPA4220 abandons the address and uses its algorithm to choose another. So perhaps the unpredictable IP addresses will
not actually explain the various problems noted in this thread; seems more likely it is a problem with the wifi connection.
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#60
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Re:TL-WPA4220KIT and wifi extension problems: wrong ip-range
2015-10-30 00:53:34
Actually my two 4220s had the same 192.168.1.1 address when they stopped working, they did not pick another address, at least after a few hours.
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#61
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