3Com XLPCI User Manual page 44

3-12 C
HAPTER
Table 3-1 Frequently Asked Questions (continued)
Question
Does the 3C900B NIC
support Windows NT
version 3.51 on the
DEC Alpha PC?
In Windows 95, what
should I do if a yellow
exclamation point (!)
appears next to the
NIC name?
What is the hardware IP
header checksum?
Does the 3C900B NIC
support NetWare
versions 3.11 or 4.0x?
What is Fast IP?
(continued)
3: T
ROUBLESHOOTING
Answer
The 3C900B NIC network driver supports only
Windows NT 4.0.
1 In the Device Manager, double-click Other Devices.
2 Click PCI Ethernet Controller or the duplicate PCI NIC
entry.
3 Click Remove.
4 Restart your PC.
The header checksum is a field in the IP header. When the
NIC receives IP data, it computes the IP header checksum. If
an error occurs, the packet is dropped and not passed to the
protocol stack. By computing the CRC through hardware, the
NIC can increase the performance of IP traffic and reduce
CPU processing required by the protocol stack.
To avoid having the CRC computed twice (once in the
hardware and again in the software by the protocol stack),
make sure that your IP protocol does not compute the CRC,
or if it does, disable that function.
The 3C900B NIC does not support NetWare versions 3.11
or 4.0x. These versions require the use of a server driver that
conforms to the HSM 3.2 specification. 3Com no longer
develops NetWare server drivers that conform to the HSM
3.2 specification.
Fast IP is software that improves performance on switched
networks. Fast IP allows end systems (workstations and
servers) to discover switched communication paths. By
creating switched shortcuts, Fast IP allows end stations
to bypass the router and transfer data across wire-speed
switched paths.
Fast IP is part of 3Com's DynamicAccess software, an
advanced network driver that brings intelligence to end
systems to provide improved network performance
and control.
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NSTALLATION ROBLEMS