IBM 201 manual Troubleshooting the 10/100 PCI Ethernet adapter

Troubleshooting the 10/100 PCI Ethernet adapter

You can use Table 8 to find solutions to 10/100 Mbps Ethernet adapter problems that have definite symptoms.

See “Testing the Ethernet adapters with Intel PROSet II” on page 65 for information on testing the adapter.

Table 8. 10/100 PCI Ethernet adapter troubleshooting chart

Ethernet adapter problem	Suggested Action
The adapter cannot connect	Check the following:
to the network.	1. Ensure that the network cable is installed correctly. The cable must be securely
	attached at both RJ-45 connections (adapter and hub). The maximum allowable
	distance from adapter to the hub is 100 m (328 ft.). If the cable is attached and
	the distance is within acceptable limits but the problem persists, try a different
	cable. If you are directly connecting two computers without a hub or switch, make
	sure you are using a crossover cable.
	2. Check the LED lights on the adapter. The adapter has two diagnostic LEDs, one
	on each side of the cable connector. These lights help you to determine whether
	there is a problem with the connector, cable, switch, or hub.

	ACT/LNK — On
	v Adapter and switch is receiving power and cable connection between
	them is good
	ACT/LNK — Off
	Check the following:
	v Adapter not sending or receiving data
	v Adapter or switch not receiving power
	v Cable connection between adapter and switch is faulty
	v Drivers not configured properly
	ACT/LNK — Flashing
	Normal operation. LED flashes when the adapter sends or receives data.
	The frequency of the flashes varies with the amount of network traffic
	100 — On
	Adapter is operating at 100 Mbps
	100 — Off
	Adapter is operating at 10 Mbps
	3. Ensure that you are using the correct drivers. Ensure that you are using the
	drivers that come with this adapter. Drivers that support previous versions of this
	adapter do not support this version of the adapter.
	4. Ensure that the switch port and the adapter have the same duplex setting. If you
	configured the adapter for full-duplex, ensure that the switch port is also
	configured for full-duplex. Setting the wrong duplex mode can degrade
	performance, cause data loss, or result in lost connections.
Diagnostics pass, but the	Check the following:
connection fails or errors	1. For 100 Mbps:
occur.
	v Use Category 5 cabling and ensure that the network cable is securely
	attached.
	v Verify the adapter is seated firmly in the slot and connected to a 100BASE-TX
	hub/switch (not 100BASE-T4).
	2. Ensure the duplex mode setting on the adapter matches the setting on the switch

64NAS 200 User’s Reference