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DHCP gets new IP exactly every 45 minutes -> Disconnect

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DHCP gets new IP exactly every 45 minutes -> Disconnect

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
DHCP gets new IP exactly every 45 minutes -> Disconnect
DHCP gets new IP exactly every 45 minutes -> Disconnect
2015-08-03 05:59:21
Region :

Model : TL-WDR3600

Hardware Version : V1

Firmware Version : 3.14.3 Build 150518 Rel.72050n

ISP : Kabel

Hello,
since a few weeks I'm getting disconnects exactly every 45 minutes and I can find this in the router "NOTICE" log after it happens:

"Dynamic IP(DHCP Client) obtained an IP successfully"


So it seems to me like my router (TP Link WDR3600) requests a new IP every 45 minutes for some reason.

My ISP is Kabel Deutschland (Cable provider) and I'm using a cable modem in between the Internet and the router.


Can you guys help me, right now I don't even know if it is a router or modem problem, at first I supsected the modem and got a different one, however the problem still occured.


I would be glad if someone could help me :)
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#1
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7 Reply
Re:DHCP gets new IP exactly every 45 minutes -> Disconnect
2015-08-03 11:06:43
Hi,

Your modem has probably a lease time set to 45min.

You should use a Static IP instead...
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#2
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Re:DHCP gets new IP exactly every 45 minutes -> Disconnect
2015-08-03 13:45:00
Did you added in Address Reservation a specific IP for your MAC Address? Most likely the lease time is set to 45 minutes and is releasing the IP and tries to get another one.
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#3
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Re:DHCP gets new IP exactly every 45 minutes -> Disconnect
2015-08-03 18:41:49
There is no option to modify the lease time in the modem settings...
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#4
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Re:DHCP gets new IP exactly every 45 minutes -> Disconnect
2015-08-05 10:55:27
Did you connect the modem directly to your PC and keep testing it for more than 45 minutes to see what happens?
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#5
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Re:DHCP gets new IP exactly every 45 minutes -> Disconnect
2015-08-05 14:10:55
Yes and other routers are working just fine.
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#6
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Re:DHCP gets new IP exactly every 45 minutes -> Disconnect
2015-08-05 14:35:53
On DHCP---DHCP Settings page, Lease Time is 120 minutes? Try to change it.
Can you use static IP as HiSpeed suggested?
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#7
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Re:DHCP gets new IP exactly every 45 minutes -> Disconnect
2015-08-12 10:08:32
There will definitely not be setting for this for the WAN card on the router. When you have a computer connected directly to the modem did you look at the lease time?- run 'ipconfig /all' (or ifconfig depending on your OS) to see if the DHCP lease time is 45min, which would be really short. It may be best to try to reset of the router
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#8
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Helpful: 0

Views: 2331

Replies: 7

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