Troubleshooting wireless LAN

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Troubleshooting wireless LAN

If we have configured wireless LAN cards on two or more systems to share the data between two, but there is some problem in doing so. Then we can find the problem using any one of the following methods:

1. Checking settings

We have two commands- iwconfig and iwlist for checking the wireless settings. The iwconfig command displays quick reference of our wireless settings. Whereas, iwlist command displays the information of parameters, specified by us. The syntax for iwconfig command is:

iwconfig WLAN_interface

We can use iwconfig command as follows:

# iwconfig eth0

eth0 IEEE 802.11-DS ESSID:”MyLAN” Nickname:”lko”

Mode: Ad-Hoc Frequency:2.412GHz Cell:3b:20:d2:00:36:48

Bit Rate=11Mb/s Tx-Power=15 dBm Sensitivity:1/3

RTS thr:off Fragment thr:off

Encryption key:5923-3715-42

Power Management:on

Link Quality:0/92 Signal level:-102dBm Noise level:-102dBm

Rx invalid nwid:0 invalid crypt:0 invalid misc:0

In the output of this command, we find details of wireless aspect of Ethernet interface.