3Com TokenLink VelocityTM XL PCI Network Interface Card manual Enabling Class of Service

4-20CHAPTER 4: MICROSOFT WINDOWS ENVIRONMENT

Class of Service (Traffic Prioritization) is an IEEE 802.5 supported feature that lets you select critical applications for high-priority network access. Class of Service prioritization allows stations running critical applications under Windows NT 4.0 or Windows 98 to access network bandwidth before other stations. The NDIS 4 driver requests a priority token when the selected applications transmit data.

The Class of Service feature is disabled by default; if you want to take advantage of this feature, you must manually enable it after installing the NDIS 4 driver.

Before Starting Class of Service Configuration

The 3C359 NIC must be installed before you configure Class of Service. For NIC installation instructions, see Chapter 2, “Installing the 3C359 NIC.”

The NDIS 4 driver must also be installed before you configure Class of Service. For installation instructions, see the earlier sections in this chapter.

Finally, you must also have installed the appropriate applications that you want to prioritize through Class of Service configuration.

Enabling Class of Service

The Class of Service feature is disabled by default. To enable Class of Service in a Windows NT 4.0 environment, follow these steps:

1In the Control Panel group, double-click the 3Com Class of Service icon.

The DynamicAccess: Select Adapter window appears (Figure 4-11).