由於用筆記本連線路由器，所以折騰了好一陣，我去不管如何反正是配置好了
其中碰到了幾個問題在這兒小計一下,從一開始用

首先硬體保證開啟無限網絡卡的開關，比如我的是FN＋F3鍵

然後執行下：
iwconfig wlan0 txpower on

第一確保是有網絡卡驅動的

[[email protected] ~]# iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"LiebaoFree979"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 08:57:00:61:CD:E4   
          Bit Rate=1 Mb/s   Tx-Power=20 dBm   
          RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off


          Link Quality=70/70  Signal level=-31 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

sit0      no wireless extensions.


上邊是有的，要是全是 no wireless...這個標誌，我想就悲劇了，得自己單獨安裝驅動，好在我的上邊不是，嘿嘿
有驅動了，接下來就是要配置的問題了。






首先先建立一個配置檔案  如下
[

[email protected] ~]# more /etc/network/wlan0_conf
ctrl_interface=/etc/network/wpa_supplicant
ctrl_interface_group=wheel
update_config=0
network={
ssid="LiebaoFree979"
proto=WPA
key_mgmt=WPA-PSK
psk="Sb123123"
}

其中 psk 是密碼，  ssid 是我的wifi的名稱


執行如下命令
[[email protected] ~]# wpa_supplicant -d -Dwext -iwlan0 -c/etc/network/wlan0_conf

接下來會執行一大堆的資訊


[

[email protected] ~]# ping www.baidu.com
connect: Network is unreachable
[[email protected] ~]# service network restart
正在關閉介面 wlan0：                                       [確定]
關閉環回介面：                                             [確定]
彈出環回介面：                                             [確定]
彈出介面 eth0：
正在決定 eth0 的 IP 資訊...失敗；無連結。檢查電纜嗎？
                                                           [失敗]
[

[email protected] ~]# ifup wlan0

正在決定 wlan0 的 IP 資訊...完成。
[[email protected] ~]# ping www.baidu.com
PING www.a.shifen.com (61.135.169.125) 56(84) bytes of data.
64 bytes from 61.135.169.125: icmp_seq=1 ttl=57 time=11.8 ms
64 bytes from 61.135.169.125: icmp_seq=9 ttl=57 time=4.91 ms
64 bytes from 61.135.169.125: icmp_seq=10 ttl=57 time=218 ms
64 bytes from 61.135.169.125: icmp_seq=11 ttl=57 time=5.03 ms

--- www.a.shifen.com ping statistics ---
11 packets transmitted, 4 received, 63% packet loss, time 10000ms
rtt min/avg/max/mdev = 4.914/60.022/218.329/91.441 ms

看到這兒基本就是ok拉，哈哈，習慣性的看下IP，如下wlan0

[[email protected] ~]# ifconfig
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:2065 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2065 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2564655 (2.4 MiB)  TX bytes:2564655 (2.4 MiB)

wlan0     Link encap:Ethernet  HWaddr EC:55:F9:7A:BC:7F  
          inet addr:20.20.0.111  Bcast:20.20.255.255  Mask:255.255.0.0
          inet6 addr: fe80::ee55:f9ff:fe7a:bc7f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6628 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6917 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:5493110 (5.2 MiB)  TX bytes:1017924 (994.0 KiB)



恩，在中途配置的時候出現過，網路屬性 配錯的，啟動提示 network is unreanable的，還有提示 網路錯誤132的等等
恩，基本上整個折騰過程就這樣了，希望能幫到和我這樣用筆記本的同學～～～

如果還是連線不上就 dhclient 執行下

[[email protected] Desktop]$ sudo dhclient