linux ethtool命令
ethtool 是用于查詢及設置網卡參數的命令。
使用概要:
ethtool ethx?????? //查詢ethx網口基本設置,其中 x 是對應網卡的編號,如eth0、eth1等等
ethtool –h??????? //顯示ethtool的命令幫助(help)
ethtool –i ethX??? //查詢ethX網口的相關信息?
ethtool –d ethX??? //查詢ethX網口注冊性信息
ethtool –r ethX??? //重置ethX網口到自適應模式
ethtool –S ethX??? //查詢ethX網口收發包統計
ethtool –s ethX [speed 10|100|1000] [duplex half|full]??[autoneg on|off] ?????? //設置網口速率10/100/1000M、設置網口半/全雙工、設置網口是否自協商
使用舉例:
1)[root@linux /]# ethtool eth1
?? Settings for eth1:
??????? Supported ports: [ TP ]
??????? Supported link modes:?? 10baseT/Half 10baseT/Full?
??????????????????????????????? 100baseT/Half 100baseT/Full?
??????????????????????????????? 1000baseT/Full?
??????? Supports auto-negotiation: Yes
??????? Advertised link modes: 10baseT/Half 10baseT/Full?
??????????????????????????????? 100baseT/Half 100baseT/Full?
??????????????????????????????? 1000baseT/Full?
??????? Advertised auto-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
相關參考:
1)[root@linux /]# which ethtool????????//查詢 ethtool 存放的路徑
??? /sbin/ethtool
2)[root@linux /]# rpm -qf /sbin/ethtool??????? //查詢 ethtool 的版本信息
?? ethtool-1.6-5
3)將 ethtool 設置永久保存在網絡設備的方法
????????解決方法一:
??????? ethtool 設置可通過 /etc/sysconfig/network-scripts/ifcfg-ethX 文件保存,從而在設備下次啟動時激活選項。?
例如:ethtool -s eth0 speed 100 duplex full autoneg off
此指令將eth0設備設置為全雙工自適應,速度為100Mbs。若要eth0啟動時設置這些參數, 修改文件/etc/sysconfig/network-scripts/ifcfg-eth0 ,添加如下一行:?
ETHTOOL_OPTS="speed 100 duplex full autoneg off"
?????????解決方法二:
???????? 將ethtool設置寫入/etc/rc.d/rc.local之中。
總結
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