IBM 704 User Manual download pdf (Page 271)

Troubleshooting the 100/10 PCI Ethernet Adapter

This section provides troubleshooting information for problems that

might occur when the 100/10 PCI Ethernet adapter is installed in

the server.

Network Connection Problems

If the adapter cannot connect to the network, check the following:

 Make sure that the cable is installed correctly.

The network cable must be securely attached at all connections.

If the cable is attached but the problem persists, try a different

cable.

If you set the Ethernet adapter to operate at 100 Mbps, you

must use Category 5 cabling. Refer to the Hardware

Specifications and Cabling Information section in the help file

for a list of recommended cables and information on how to

install cabling.

If you directly connect two workstations (no hub), use a

crossover cable. Refer to the Hardware Specifications and

Cabling Information section in the help file.

 Check the LEDs on the rear of the Ethernet adapter.

The Ethernet adapter has three diagnostic LEDs beside the cable

connector. These lights help indicate whether a problem exists

with the connector, cable, or hub.

– The LNK LED illuminates when the adapter receives a LNK

pulse from the hub. If the LED is OFF, there might be a

bad connector or cable, or a problem with the hub. The

LNK LED is also OFF when you run the diagnostic tests in

the Setup program.

– The ACT LED illuminates when the adapter detects read or

write activity on the network, even when there is no activity

on the adapter. If the ACT LED is not on, make sure that

the hub and network are operating and that the correct

drivers are loaded.

– The 100 LED illuminates when a 100 Mbps connection is

established.

Chapter 5. Solving Problems 253

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IBM 704 User Manual Page 271