TCP Optimizer

To optimize performance on CB Ethernet, Charter Business recommends that Maximum Segment Size (MSS) and Maximum Transmission Unit (MTU) be set to the recommended levels on customer equipment. The recommended settings are: Maximum Segment Size (MSS) is set to 1420 with a Maximum Transmission Unit (MTU) of 1460 bytes on copper based 10/100 UNI LAN ports. Fragmentation must be handled through standard TCP negotiations or by the application at the end stations.

TCP Optimizer

Please download and run TCP Optimizer from the following link: http://www.speedguide.net/files/TCPOptimizer.exe
  • Click Custom (bottom right)
  • Change Maximum Transmission Unit (MTU) to 1460 - this will automatically adjust the Maximum Segement Size
  • Make sure MTU Discovery is set to YES
  • Apply Changes and restart your computer
TCP Optimizer

TCP Optimizer – restore to Windows Default Settings

In a case you need to revert changes made on the first page to Windows Default Settings click
  • File/Restore Windows Default Settings
TCP Optimizer - restore

TCP Optimizer – restore backup settings

If you need to revert changes made on the first page to backed up settings please open TCP Optimizer again and click:
  • File/Restore backed up settings
  • And then choose the backup file that TCP Optmizer automatically made when you first ran it. You will find the backup file in the same directory where your TCP Optmizer is downloaded.
TCP Optimizer - backup