无线网卡的查看与配置——iw,iwconfig,ethtool

xiaoxiao2021-03-01  2

摘要:在linux上,我们经常需要把一台笔记本设置成一个共享wifi上网的路由器。如果我们需要把本机配置成一台无线AP,就需要查看网卡的相关信息和进行对应配置。其中iw、iwconfig和ethtool三个命令可以有效帮助我们完成这些问题。

1. iw

命令简介:iw - show / manipulate wireless devices and their configuration

用法:

$ iw wlan0 info Interface wlan0ifindex 3type managedwiphy 2

其中,wlan0这个无限网卡,设备索引号是3,链接类型是managed(单点对ap的连接模式),wiphy类型是2.

2.iwconfig

命令简介:iwconfig - configure a wireless network interface

用法:

用法: iwconfig interface [essid {NN|on|off}] [nwid {NN|on|off}] [mode {managed|ad-hoc|...} [freq N.NNNN[k|M|G]] [channel N] [ap {N|off|auto}] [sens N] [nick N] [rate {N|auto|fixed}] [rts {N|auto|fixed|off}] [frag {N|auto|fixed|off}] [enc {NNNN-NNNN|off}] [power {period N|timeout N}] [retry {limit N|lifetime N}] [txpower N {mW|dBm}] [commit] 示例:

essid设置:#iwconfig eth0 essid any 允许任何ESSID,也就是混杂模式

nickname设置:#iwconfig eth0 nickname "My Linux Node"

工作模式设置:#iwconfig eth0 mode Managed(注意,不是所有的网卡都能支持所有的工作模式)

3、ethtool

命令简介:ethtool - query or control network driver and hardware settings

命令用法:

ethtool ethX //查询ethX网口基本设置 ethtool –h //显示ethtool的命令帮助(help) ethtool –i ethX //查询ethX网口的相关信息 ethtool –d ethX //查询ethX网口注册性信息 ethtool –r ethX //重置ethX网口到自适应模式 ethtool –S ethX //查询ethX网口收发包统计 ethtool –s ethX [speed 10|100|1000]\ //设置网口速率10/100/1000M [duplex half|full]\ //设置网口半/全双工 [autoneg on|off]\ //设置网口是否自协商 [port tp|aui|bnc|mii]\ //设置网口类型 [phyad N]\ [xcvr internal|exteral]\ [wol p|u|m|b|a|g|s|d...]\ [sopass xx:yy:zz:aa:bb:cc]\ [msglvl N] 使用实例:

举例: 0)查看网卡驱动等信息: hyk@hyk-linux:~ $ ethtool -i wlan0 driver: iwlwifi version: 3.10.9 firmware-version: 39.31.5.1 build 35138 bus-info: 0000:08:00.0 supports-statistics: yes supports-test: no supports-eeprom-access: no supports-register-dump: no 1)[root@linux /]# ethtool eth1 Settings for eth1: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supportsauto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertisedauto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: umbg Wake-on: d Link detected: yes 2)[root@linux /]# ethtool -i eth1 driver: e1000 version: 5.0.43-k1 firmware-version: N/A bus-info: 06:08.1 3)[root@linux /]# ethtool -S eth1 NIC statistics: rx_packets: 58068300 tx_packets: 87124083 rx_bytes: 1589713008 tx_bytes: 2165825901 rx_errors: 0 tx_errors: 0 rx_dropped: 0 tx_dropped: 0 multicast: 0 collisions: 0 rx_length_errors: 0 rx_over_errors: 0 rx_crc_errors: 0 rx_frame_errors: 0 rx_fifo_errors: 0 rx_missed_errors: 0 tx_aborted_errors: 0 tx_carrier_errors: 0 tx_fifo_errors: 0 tx_heartbeat_errors: 0 tx_window_errors: 0 4)[root@linux /]# ethtool -s eth1 autoneg off speed 100 duplex full

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