Low Bandwidth KVM Settings

Following are the settings that Raritan recommends in order to achieve optimum performance when using KVM over low bandwidth speeds typical of DSL connections. This information applies to both virtual KVM and MPC.

Setting

To achieve optimum performance:

Connection speed

Select Connections > Properties.

Set the Connection Speed to a value that best matches the client-to-server connection. This ranges from 384 Kb (for lower DSL speeds) to >1MB.

Color depth

Select Connections > Properties.

Reduce the Color Depth as far as possible. The lower this is set, the better the video refresh response on the target will be.

The impact is noticeable when opening and moving folders on the target desktop. Specifically, the display is updated much quicker, improving the overall usability of the connection.

Noise filter

Select Video > Video Settings.

The Noise Filter should be set to 7 (the highest value). At this setting, less bandwidth will be used for target screen changes, resulting in improved local and remote mouse synchronization.

Note: Setting the color depth to low and the noise filter to high will cause a degradation in how the video is displayed. However, this tradeoff is offset by the overall improved usability due to better mouse synchronization and video update.

Smoothing

Select Connections > Properties.

Set Smoothing to high. This will improve the appearance of target video by reducing the video noise that is displayed.

Auto color calibration

Select Video > Auto-sense Video Settings

Deselect the Automatic Color Calibration checkbox to disable the option.

Quick sense video mode

Select Video > Video Settings to open the Settings dialog.

Select the "Quick sense video mode" radio to enable this option.

See Also

Modem Configuration

Certified Modems for UNIX, Linux and MPC

Client Dial-Up Networking Configuration

Windows NT Dial-Up Networking Configuration

Windows 2000 Dial-Up Networking Configuration

Windows XP Dial-Up Networking Configuration