Wireless

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Revision as of 20:21, 23 April 2016 by Bush (talk | contribs) (Connecting to Networks (wpa_supplicant))
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Bringing up Wireless Interface

The wireless interface (most commonly wlan0) can be brought up with:

ifconfig <interface> up


Wireless Bringup on Boot

The wireless interface bring-up behaviour can be configured within /etc/network/interfaces.d.


Connecting to Networks (wpa_supplicant)

A network connection can be established by starting the wpa_supplicant daemon. The WPA supplicant requires a configuration file with a list of network configurations to use for connection.

$ wpa_supplicant -B -Dnl80211 -iwlan1 -c/etc/wpa_supplicant.conf
Successfully initialized wpa_supplicant

Checking Network Connection

iw dev <interface> link

If connected to a network the output will show the details of the connection:

$ iw dev wlan0 link
Connected to 12:34:56:78:9a:bc (on wlan0)
	SSID: MyNetwork
        freq: 2437
        RX: 32843 bytes (117 packets)
        TX: 1303 bytes (12 packets)
        signal: -44 dBm
        tx bitrate: 150.0 MBit/s MCS 7 40MHz short GI

        bss flags:      short-preamble short-slot-time
        dtim period:    1
        beacon int:     100


$ iw dev wlan0 link
Not connected.

Getting an IP Address (dhclient)

dhclient <interface>


Checking IP Address and Connectivity

$ ifconfig
wlan1     Link encap:Ethernet  HWaddr e0:e5:cf:00:ff:22  
          inet addr:10.0.111.160  Bcast:10.0.111.255  Mask:255.255.255.0
          inet6 addr: fe80::e2e5:cfff:fe00:ff22/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:201 errors:0 dropped:0 overruns:0 frame:0
          TX packets:11 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:54949 (54.9 KB)  TX bytes:1526 (1.5 KB)