D-Link Forums

The Graveyard - Products No Longer Supported => Routers / COVR => DIR-645 => Topic started by: cicle on May 17, 2014, 03:02:28 PM

Title: Conntection drops out regularily!
Post by: cicle on May 17, 2014, 03:02:28 PM
Hi Community,

For a few weeks my router crashes regularly for about 1-2 seconds. I checked the log and found a repeating procedure everytime it happens:

DHCP: Client send DISCOVER

DHCP: Client receive OFFER from 10.xxx.xxx.x

DHCP: Client send REQUEST, Request IP 85.xxx.xx.xx from 10.xxx.xxx.x.

DHCP: Client receive ACK from 10.xxx.xxx.x, IP=85.xxx.xx.xx, Lease time=2404.

Got new client [60:xx:xx:xx:xx:xx] associated from BAND24G-1.1 (2.4 Ghz)

Got new client [00:xx:xx:xx:xx:xx] associated from BAND24G-1.1 (2.4 Ghz)

Got new client [E8:xx:xx:xx:xx:xx] associated from BAND24G-1.1 (2.4 Ghz)


The lease time(2404) changes every time and seems to be set random between 1900-3600 (seconds).
Also, the lease time is the exact amount of time until the connection drops out again.


Further information:
-my PC is connected via LAN
-A direct connection to the modem causes no problems
-Firmware: 1.04 B11
-ISP Service: Cable
-Modem: Arris Touchstone
-The IP is static (as far as I know)
-the log procedure also shows up when I change an option and save it


Thank you for helping!


EDIT:
Surprisingly, my IP-Adress changed a few Minutes ago. After restarting the Router the leasing time is now always 3600 seconds (which seems to be not enough IMHO).
I will check if my Connection drops off again after an hour and keep this post updated.

EDIT #2:
After an hour the internet crashed again and the lease time now is 3544.. So there is no change at all despite of the changed IP.
Title: Re: Conntection drops out regularily!
Post by: FurryNutz on May 17, 2014, 07:08:14 PM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)

FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)

Internet Service Provider and Modem Configurations

Arris Cable Modems and External Routers (http://forums.dlink.com/index.php?topic=50682.0)

Router and Wired Configurations
Some things to try: - Log into the routers web page at 192.168.0.1. Use IE, Opera or FF to manage the router. Besure to log into the Admin account on the router.
Title: Re: Conntection drops out regularily!
Post by: cicle on May 18, 2014, 05:31:12 AM
Hi FurryNutz,
thank you for responding!

-What region are you located? Germany
-A Factory Reset did not change anything.
-The Router was working with the old Firmware but also with the new one. I don't see the problem there.

-What ISP Modem model # do you have? Touchstone DOCSIS 3.0 (no build in Router)
-Is ISP Modem/Service using Dynamic or Static WAN IP addressing? probably dynamic
-What ISP Modem service link speeds UP and Down do you have? UP 100 kbit/s, DOWN 2,5 kbit/s
-Check cable between Modem and Router. Cable seems to be working
-Check ISP MTU requirements. Since it was doing well for a Year, this is probably not the Problem
-For DSL/PPPoE connections on the router, ensure that "Always ON" option is enabled. "Always ON" is always on ;)


-Turn off Advanced DNS Services. It is turned off
-Enable Use Unicasting. I enabled it.
-Turn off DNS Relay under Setup/Networking. Done.
-Setup DHCP reserved IP addresses for all devices ON the router. Also Done.
-If IPv6 is an option on the router, select Local Connection Only or Disable IPv6 options under Setup/IPv6. IPv6 is disabled.
-Enable or Disable SPI to test. Both don't change anything.
-Enable uPnP and Multi-cast Streaming under Advanced/Networking. Disable uPnP for testing Port Forwarding rules. Enable IPv6 Multi-cast Streaming for routers that have a Media Server option. Disable IPv6 Multi-cast Streaming if IPv6 or Media Server is not being used. Still no Change.
-Turn off WISH, and WPS under Advanced. WPS is turned off. But I could not find WISH.
WAN Port Speed set to Auto or specific speed? It was set to automatic. The Modem Supports 1000mb but changing the option did not fix the problem.
Set current Time Zone, Date and Time. Use an NTP Server feature. It is set.

All this did not help at all. The internet still drops off.
A Question for understanding: How should my log look like, if it would work well?
Is it possible that my ISP causes the problem?

Furthermore: Did you ever see, that the lease time is changing randomly?

Thank you for helping!
Title: Re: Conntection drops out regularily!
Post by: FurryNutz on May 19, 2014, 07:53:04 AM

Do both wired and wireless connection exhibit this behavior?


Wireless Configurations
Links>Wireless Installation Considerations (http://forums.dlink.com/index.php?topic=48327.0) and Managing Signal Congestion (http://forums.dlink.com/index.php?topic=53228.0) and Good Neighbour Policy (http://forums.dlink.com/index.php?topic=10634.0)


Router Placement
Forum User - "Well I feel really dumb. After moving the router away from other electronic devices my speeds are back to normal. Just a heads up for anyone experiencing slow speeds, you might want to move it away from other electronics and see if that helps."
3-6' feet minimum safe distance between devices.
Placement on main level floor and central in the building and WELL ventilated is preferred. Not in basements or closets as building materials, or near by electronics devices could interfere or hinder good signal propagation.