3Com 3C971-F manual Edit the PCI adapter parameters

3-8 CHAPTER 3: WINDOWS NT DRIVER INSTALLATION

13Edit the PCI adapter parameters.

The settings in the PCI Adapter Setup dialog box (Figure 3-5) are temporary settings for Client 0 of the 3C971-F adapter. The LEC applications software, presented later in this chapter, allows the user to reconfigure Client 0, if need be, and to enable the additional clients.

aSet an appropriate MTU Size for Client 0.

All nodes that are part of the same logical IP subnet must use the same maximum transmission unit (MTU) value. The default size is 1514 and is recommended for communicating with Ethernet hosts. If ATM nodes are the only end-nodes on the network, a setting of 9K will dramatically improve performance.

bSet the Interrupt Level.

If you want the operating system to pick an interrupt level automatically (recommended), use the Auto Detect setting. Otherwise, you must set a specific interrupt level for the 3C971-F adapter.

If the driver fails to recognize the adapter with the Auto Detect setting, you may need to select an interrupt level that coincides with your system BIOS.

14When the editing of PCI parameters is complete, select the OK button.

The dialog box in Figure 3-6 appears for editing the signaling options.