I'm kind of new to networking, so please bear the long post.

I wanted to set up a 10G Ethernet peer-to-peer network on the same computer (basically two SFP+ transceivers on the same NIC that are connected to each other over fiber) before I try to connect two computers together.

I have an Intel X520-2 NIC with SFP+ ports on a machine running Windows 10. I did the following steps in order:

  1. Hot fixed two Solid Optics tunable DWDM SFP+ transceiver so they're compatible with the Intel NIC using this tool: http://solid-optics.com/tools/multi-fiber-tool/so-multi-fiber-tool-id1768.html

  2. Install Intel NIC and install its latest drivers, then reboot

  3. Open Network Settings, and configure different IP addresses + subnet masks to the two Intel X520-2 network adapters according to this YouTube tutorial: https://www.bing.com/videos/search?q=set+up+10g+ethernet+home+network&view=detail&mid=D4B96D48532697B45A4DD4B96D48532697B45A4D&FORM=VIRE

  4. Change the C:/Windows/System32/drivers/etc/hosts file to include the two IP addresses, then reboot

I get no network between the two adapters when I open Network Connections in Windows. I reset my TCP/IP, IPV4 and Winsock stacks via Command Prompt but that didn't do the trick either.

How do I proceed? I just want to be able to drag and drop files from one folder to another over fiber on the same computer.

  • ok, as @Tim_Stewart said in his answer - without a router you cant get from one subnet to another. so if you configure both cards in the same subnet - it should work. not sure if fiber does auto-negotiate as the 1Gb RJ45 NICs nowadays do and switch Rx/TX if needed. – Zina Feb 14 '18 at 23:47
  • @zina it's not possible to mdi-x on fiber cards. It's because tx is a laser or LED, and RX is a laser/light detecting module. There is no logically switching send and receive. It would be awesome though! ;) – Tim_Stewart Feb 20 '18 at 17:44
  • @Tim_Stewart - thanks for the info. If I would have used my brain would probably notice it :) – Zina Feb 20 '18 at 17:52

Two computers without a fiber-optic capable router in-between should be on the same subnet.

I.e pc1 on And pc2 on

You may also have to make a cross-over with your fiber cable. I.e switch tx/rx on one end. You release the plastic bridge on the fiber optic connector clip to do this.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.