SOLVED: Not your typical 'Request timed out'

MarHardware

Honorable
Aug 22, 2014
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10,510
I have a connection problem with a particular network.
On Windows Server 2008 R2 running DHCP service, I added my computer to the DHCP Reservations because I had an IP conflict issue. I then deleted the reservation and now I keep getting 'Request timed out'. I only get this on this particular network. My connection works great everywhere else.
On this network, I can't do anything. Pages load forever. Synced cloud application not syncing, but networks connected.

I've done:
ipconfig /release
ipconfig /renew
ipconfig /flushdns
set static IP
netsh winsock reset catalog
netsh int ipv4 reset reset.log
netsh int ipv6 reset reset.log
disabled and re-enabled network adapter
uninstalled and re-installed network driver

I think I did all I could, can someone assist please?
 


how many devices do you have on the problematic network?
do you get a different IP address every time you run ipconfig /renew ?
 


Not yet. Work network so have to do it early in the morning before work.



A lot.
Sometimes. I set a static IP outside the DHCP address pool, problem persisted.
 
I restarted the router and the DHCP service. Yesterday I had restarted the server.
It was working for a while and then...

Here's the log for pinging google.com - LOG

Here's another log. I did a pathping to google.com - LOG

 
run ipconfig /all on a workstation on the same network that does not have any issues (use the continuous ping test to confirm that other workstations don't have the same problem). run ipconfig /all on the problematic workstation and look for discrepancies. make sure DHCP server gateway and DNS are the same. you may have a rouge DHCP server on the network. On your workstation you may be seeing the symptoms of an IP conflict between another device and the gateway. best way to find out is to shutdown the gateway and ping it. if you get a reply then there is another device with the same IP as the gateway.
 


I did as you suggested. Packets are being lost, but only I am experiencing the problem.

ipconfig /all
Faulty PC - - - - - - Test PC

pathping google.com
Faulty PC - - - - - - Test PC

ping google.com -n 1000
Faulty PC - - - - - - Test PC
 


to eliminate software as a suspect, get some kind of a linux live CD, like knopix. boot with the CD and run a ping test.
if everything is fine under linux then you have an issue with windows. format HDD and reinstall windows.

if you get dropped packets under linux then you are dealing with a hardware problem. Could be the NIC, or a bad port on the switch, or everything in between.

at this point all hardware related to this network connection is also is a suspect.

when you ran the ping test is the test pc plugged into the same cable, same wall jack, same switch?



 


I like the idea of the live cd.

I used another switch and problem persist.
Used the same cable in another router on a separate network and it worked fine.

Something else came up, so I'm going to perform a clean install now. Hopefully, this rectify the situation. I doubt it would be hardware related because it worked on any other network. It's possible that my MAC is somehow "trapped"... don't know if that makes sense, but it's the MAC we use to assign reservations, so...

Again, thanks for assisting me.
 


Problem persists after clean install 🙁

I'm guessing that somewhere on the server my MAC is stored and is reserved with a particular IP, while I still get IP from the DHCP pool.
 
I ran the arp commands, but it didn't work.

Thanks a lot for all the responds guys. I appreciate it :)

I seem to have resolved it!
I had use the laptop to configure a Nexxt Wireless router about 2 weeks ago for some Kiosk machines. Apparently the router cloned the laptop's MAC address; I restored it's default MAC and now laptop's going strong for 4 hours now.