Can't use100mb full deplex

[RazerMan Saint]

Right now i can use 100mb half duplex , 10mb full duplex can't use 1gb / 100mb full duplex
if i use 100mb fullduplex it says network cable unplugged and identifying loop may be connect for a few second and back to unplugged.
and what different between FULL and HALF duplex will my ping increase slow internet packet loss ???

EDIT : tried with laptop same cable with 1gb full duplex works fine

 

[Ralston18]

You are making the speed and duplex changes via the wired network adapter settings - correct?

Have you tried reinstalling/updating the drivers for the existing wired network adapter?

Is the wired network adapter built into the motherboard or is the wired network adapter in one of the PCIx slots?

Do you have both? If so, try the other wired network adapter port.

If not, obtain a USB/wired network adapter and test with it.

Or swap out the existing PCIx wired network adapter with a known working adapter.

The goal is to narrow down the possibility to some failure within the existing network adapter.

 

[BCFosheezy]

Right now i can use 100mb half duplex , 10mb full duplex can't use 1gb / 100mb full duplex
if i use 100mb fullduplex it says network cable unplugged and identifying loop may be connect for a few second and back to unplugged.
and what different between FULL and HALF duplex will my ping increase slow internet packet loss ???

EDIT : tried with laptop same cable with 1gb full duplex works fine

It's possible that you have the wrong driver installed on the malfunctioning machine, or there is a hardware issue with your network card/port.

The difference between full duplex and half duplex is in the direction of transmission. Half duplex means the two ends are negotiated at the speed stated, but have time slots when one end can send and the other receives and vice-versa. (Think of a cb radio or walkie-talkie) Full duplex enables both ends to send and receive simultaneously. (Think of a telephone.)
It can reduce latency depending on the size of data being transmitted. It shouldn't have packet loss. This can be more of a symptom of why your card is unable to negotiate a higher speed, rather than a result of the negotiated speed.

 

[RazerMan Saint]

You are making the speed and duplex changes via the wired network adapter settings - correct?

Have you tried reinstalling/updating the drivers for the existing wired network adapter?

Is the wired network adapter built into the motherboard or is the wired network adapter in one of the PCIx slots?

Do you have both? If so, try the other wired network adapter port.

If not, obtain a USB/wired network adapter and test with it.

Or swap out the existing PCIx wired network adapter with a known working adapter.

The goal is to narrow down the possibility to some failure within the existing network adapter.

You are making the speed and duplex changes via the wired network adapter settings - correct?
>> yes the properties and advanced tab is that wat u saying

Have you tried reinstalling/updating the drivers for the existing wired network adapter?
>> i dont know my model of this i know only it is realtek pcie gbe family controller

Is the wired network adapter built into the motherboard or is the wired network adapter in one of the PCIx slots?
>> built in

Do you have both? If so, try the other wired network adapter port.
>> have only 1

If not, obtain a USB/wired network adapter and test with it.
>> something like this > http://k.lnwfile.com/_/k/_raw/5g/x8/qr.jpg

 

[Ralston18]

Yes with respect to the USB adapter.

Check the specifications to be sure it is truly Fast Ethernet (100mb) and not just "compatible" meaning the network port accepts a fast ethernet RJ45 plug but still performs at the lower 10mb speed. Some manufacturers tend to twist words and meanings .....

 

[molletts]

What speed/duplex do you get if you leave it on AUTO (you should be able to tell from the LEDs on the switch/router)? Selecting a speed/duplex setting manually can mess up the autodetection at the other end of the link.

The drivers for the Realtek PCIe gigabit adapters are here.

 

[RazerMan Saint]

What speed/duplex do you get if you leave it on AUTO (you should be able to tell from the LEDs on the switch/router)? Selecting a speed/duplex setting manually can mess up the autodetection at the other end of the link.

The drivers for the Realtek PCIe gigabit adapters are here.

What speed/duplex do you get if you leave it on AUTO (you should be able to tell from the LEDs on the switch/router)?
>> how ? but leave on AUTO problem still there too gotta set manually to use internet

 

[Ralston18]

Yes - seconding molletts here. And do check the LEDs as suggested...

Some devices do not play well together and manually setting things (versus AUTO) can work. Or if already manual then AUTO may work.

The router's User Guide/Manual should explain the LED meanings and help with the manual settings. What router are you using?

 

[RazerMan Saint]

Yes - seconding molletts here. And do check the LEDs as suggested...

Some devices do not play well together and manually setting things (versus AUTO) can work. Or if already manual then AUTO may work.

The router's User Guide/Manual should explain the LED meanings and help with the manual settings. What router are you using?

What LEDs ?
AUTO doesnt work for me gotta set manual to make internet work or it will be like i said above
My router technicolor 7200.20

 

[Ralston18]

Reference:

http://setuprouter.com/router/technicolor/tc7200-u/manual-1685.pdf

Is that the manual for your router?

 

[RazerMan Saint]

Reference:

http://setuprouter.com/router/technicolor/tc7200-u/manual-1685.pdf

Is that the manual for your router?

yes but i dont think its router problem cuz i test with my laptop same port same cable but it runs fine with 1gb full duplex

 

[Ralston18]

Understood.

The immediate objective is to take advantage of any troubleshooting/comparison information that can be obtained from the router via the LEDs, logs, and current configuration settings.

Compare the router and laptop settings that work to the network adapter settings on your problem computer. Lots of details involved and the fix may be buried therein.

Plug the laptop into one of the other router ports and open up the network adapter card setting on both computers. Methodically work your way through the respective network adapter configuration screens and look for differences.

Make notes first on what you find. Then make considered changes on your system only and only change one thing at a time. Always keep in mind that you may need to reverse a change that did not go well.