1指令 --mii-tool & ethtool (配置网卡的模式)

mii-tool 的用法 :

 

[root@localhost ~]# mii-tool –help
usage: mii-tool [-VvRrwl] [-A media,... | -F media] [interface ...]
-V, –version display version information
-v, –verbose more verbose output 注:显示网络接口的信息;
-R, –reset reset MII to poweron state 注:重设MII到开启状态;
-r, –restart restart autonegotiation 注:重启自动协商模式;
-w, –watch monitor for link status changes 注:查看网络接口连接的状态变化;
-l, –log with -w, write events to syslog 注:写入事件到系统日志;
-A, –advertise=media,… advertise only specified media 注:指令特定的网络接口;
-F, –force=media force specified media technology 注:更改网络接口协商方式;
media: 100baseT4, 100baseTx-FD, 100baseTx-HD, 10baseT-FD, 10baseT-HD,
(to advertise both HD and FD) 100baseTx, 10baseT
 

 

查看网络接口的协商状态 

 

[root@localhost ~]# mii-tool -v eth0
eth0: negotiated 100baseTx-FD, link ok
product info: vendor 00:00:00, model 0 rev 0
basic mode:   autonegotiation enabled
basic status: autonegotiation complete, link ok
capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
 

这块网卡工作在100M全双工自适应模式下,“100BaseTx-FD”意为100M Full Duplex。 

 

 

更改网络接口协商方式 

 

想把网络接口eth0改为 10Mb/s全双工的模式应该怎么办呢? 

更改网络接口的协商方式,我们要用到-F选项,后面可以接 100baseT4, 100baseTx-FD, 100baseTx-HD, 10baseT-FD, 10baseT-HD等参数; 

 

命令:#mii-tool -F media [interface] 

命令mii-tool -F是更改模式  |选项 |网卡 

 

media可选的模式有100baseTx-FD、100baseTx-HD、10baseT-FD、10baseT-HD等。 Interface代表所选择的网卡,如eth0、eth1等,默认为eth0。 

即: 

#mii-tool -F 10baseT-FD eth0 

 

设置网卡工作在10M半双工模式下,输入命令: 

#mii-tool -F 10baseT-HD eth0 

 

恢复网卡的自适应工作模式,输入命令: 

#mii-tool -r eth0 

 

需要说明的是:ubuntu下可能需要管理员权限才可以修改或这查看网卡 

如果没有权限系统会提示: 

SIOCGMIIPHY  on ‘eth0′ failed: operation not permitted  你没有权限操作 

这时候 就要加上 sudo mii-tool -v eth0 查看现在网卡状态 

 

 

ethtool的用法: 

 

 

 

ethtool 显示网络端口设置功能; 

ethtool是Linux下用于查询及设置网卡参数的命令。 

 

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   

就是ethtool 后面直接接口就行,但是ubuntu需要我安装  比较麻烦,所以就没用,不过我也成功设置了

 

[root@localhost ~]# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: No 注:自动协商关闭
Speed: 100Mb/s 注:速度 100Mb
Duplex: Full 注:全双工
Port: MII
PHYAD: 32
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0×00000007 (7)
Link detected: yes 注:eth0已经激活;ethtool 设置网卡的协商模式;

 

在ethtool的-h帮助中我们查看到有这样的帮助信息;

ethtool -s DEVNAME /
[ speed 10|100|1000 ] /
[ duplex half|full ] /
[ port tp|aui|bnc|mii|fibre ] /
[ autoneg on|off ] /

把网卡eth0 速度改为10Mb/s,采用半双工;

 

[root@cuc03 beinan]# ethtool -s eth1 speed 10 duplex half
[root@cuc03 beinan]# ethtool eth1
Settings for eth1:
Supported ports: [ TP MII ]
Supported link modes:   10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes:  10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: No
Speed: 10Mb/s 注:速度 10M/s
Duplex: Half  注:半双工
Port: MII
PHYAD: 32
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0×00000007 (7)
Link detected: no 注:eth1没有激活;

 

把网卡eth0 速度改为100Mb/s,采用全双工;

 

[root@cuc03 beinan]# ethtool -s eth1 speed 100 duplex full
[root@cuc03 beinan]# ethtool eth1
Settings for eth1:
Supported ports: [ TP MII ]
Supported link modes:   10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes:  10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: No
Speed: 100Mb/s  注:速度 100M/s
Duplex: Full 注:全双工
Port: MII
PHYAD: 32
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0×00000007 (7)
Link detected: no 注:eth1网卡没有激活;

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