234 Troubleshooting Checklist
Step 5. Uncheck the Use automatic settings check box.
Step 6. Under Resource Settings, click I/O Range.
Step 7. In the Conﬂicting Device list, check to see if the range is used by another
device, and then click the Change Setting button.
Step 8. Choose a range that does not conﬂict with the device. The Conﬂict Informa-
tion pane at the bottom of the window shows if the range is already being
Step 9. Click OK.
Step 10. Under Resource Settings, click IRQ.
Step 11. Examine the Conﬂicting Device list at the bottom of the window. If an IRQ
setting is used by another device, click the Change Setting button.
Step 12. Choose an IRQ in the Value dialog box and select one that does not conﬂict
with the device. The Conﬂict Information pane at the bottom of the window
shows if the IRQ is already being used.
Step 13. Click OK.
Step 14. Reboot your computer. (This is required.)
As you have seen in this and previous chapters, wireless networks combine many of
the issues germane to a wired network, along with the specialized characteristics of
radio transmission and reception. Successfully troubleshooting these networks
requires you to balance the two disciplines.
If your client has problems associating to any of your APs, try the following:
❑ If the client is a laptop, palmtop, or other portable device, try to move it closer to
❑ Make sure the adapter is securely seated in the computer’s adapter slot. Remove
and reinsert the adapter to ensure it is properly seated.
❑ Make sure the antenna is properly attached. (This is especially important for
desktop PCs with a removable antenna.)
❑ Conﬁrm that the AP is turned on and runs properly.
❑ Double-check your settings on both the client and AP. Parameters to check
— EAP authentication