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[upas]

Wifi works - And internet works.

LAN problems no internet
LAN connection shows conected 1.0 Gbps
Cant acces router with LAN.  With browser.
Cant get DHCP ip addres to pc.
Cant ping router

So i configured pc to static ip.

DIR-657
Firmware Version :     1.01 , 18, Jan, 2012
Hardware Version: A1

arp -a
Interface: 192.168.0.8 --- 0xb
  Internet Address      Physical Address      Type
  192.168.0.255         ff-ff-ff-ff-ff-ff     static
  224.0.0.22            01-00-5e-00-00-16     static
  224.0.0.251           01-00-5e-00-00-fb     static
  224.0.0.252           01-00-5e-00-00-fc     static
  239.255.255.250       01-00-5e-7f-ff-fa     static
Where is gateway?
after reboot gateway 192.168.0.3
Interface: 192.168.0.8 --- 0xb
  Internet Address      Physical Address      Type
  192.168.0.3           84-c9-b2-6b-04-6c     dynamic
  192.168.0.255         ff-ff-ff-ff-ff-ff     static
  224.0.0.22            01-00-5e-00-00-16     static
  224.0.0.251           01-00-5e-00-00-fb     static
  224.0.0.252           01-00-5e-00-00-fc     static
  239.255.255.250       01-00-5e-7f-ff-fa     static
It happens every every 3-5 days.
Some times when i wake up PC  from sleep mode. Windows7
Can it be caused by any other router connected to lan - this problem?

[FurryNutz]

Link>Welcome!

• What region are you located?
• Has a Factory Reset been performed?

Internet Service Provider and Modem Configurations

• What ISP Service do you have? Cable or DSL?
• What ISP Modem Mfr. and model # do you have?

How many other devices are connected to the back of the router?
Try testing each LAN port in back for problem...
Test with ALL other LAN connections disconnected, just test one PC.

Check LAN cabling. Swap out and test. CAT6 recommended.

[upas]

What region are you located?
Europe/Baltic
Has a Factory Reset been performed?
No



Internet Service Provider and Modem Configurations
TEO LT
What ISP Service do you have? Cable or DSL?
Fiber Optic
What ISP Modem Mfr. and model # do you have?
 Wintop Optical WT-8110
How many other devices are connected to the back of the router?
1- TP Link TL-WR740N
1- Tp Link TL-MR3420
2 - PC
Try testing each LAN port in back for problem...
Nothing. Disconected on by one. Tested each port.

Test with ALL other LAN connections disconnected, just test one PC.
Reboot pc > tested with 1 Pc, LAN router not responding

Check LAN cabling. Swap out and test. CAT6 recommended.
CAT5 conected.

Conetion avalable only on wifi, connected to router but no internet acces. Status shows every thing ok.
Shows lan PC conections that are disconnected...
WLAN shows conected to internet.
Tools>system chek  ping> host no found.

After router reboot. Working again.

Config file:
http://www.megafileupload.com/sQmR/config.bin

[FurryNutz]

Can you disconnect the TP-Link devices leaving just your PC connected to see if it still fails?

I would do a factory reset and setup the router from scratch and test with just the PC, then add the TP-Link devices if it doesn't fail.

Also try a FW upgrade and see.

[upas]

Can you disconnect the TP-Link devices leaving just your PC connected to see if it still fails? 
- Fails.
Then i was trying to see witch port is working. Conected wifi.
Ping to conected wifi. Failed
Then connected another pc to ping. Failed
Ping cant go thrue LAN>LAN PC to PC,
LAN to WIFI
Gateway  ping failed. Connect to router http fails.

What can make all ports hang down?
When it hangs down. Ping cant go thrue, inside LAN.
There was no problem to find disconeting one by one(in switches), to find witch port is kiling, in router this not working.
When its hang down, all ports are "offline". Lets say if its of other devices TP-Link. So if i disconnect it. It should work, but isnt.
And can be reseted only by reboot.
After reboot,again wokring all devices PC and Tp-link. Till again it will hangs up.... after 2,3 or 5 days.

I will try to reset and upgrade.

[FurryNutz]

Wondering if the LAN chip is starting to fail or has become damaged due to heat and degraded...

[FurryNutz]

You could try this:
http://forums.dlink.com/index.php?topic=56608.msg220927#msg220927