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linux网卡模式设置mii-tool和ethtool

  • 2024-08-25 05:13:40
  • 来源:网络
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  mii-tool 更改网络接口协商的方法;

  # mii-tool --help

  usage: mii-tool [-VvRrwl] [-A media,... | -F media] [interface ...]

  -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

  * 实例一: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

  注:上面的例子,我们可以看得到是自动协商。注意红字的部份;

  * 实例二:更改网络接口协商方式;

  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;

  如果我们想把网络接口eth0改为 1000Mb/s全双工的模式应该怎么办呢?

  [root@localhost ~]# mii-tool -F 100baseTx-FD

  [root@localhost ~]#mii-tool -v eth0

  eth0: 100 Mbit, full duplex, link ok

  product info: vendor 00:00:00, model 0 rev 0

  basic mode: 100 Mbit, full duplex

  basic status: link ok

  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

  advertising: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

  注:是不是已经改过来了?当然,我们也一样用ethtool 工具来更改,比如执行下面的命令;

  [root@localhost ~]# ethtool -s eth0 speed 100 duplex full

  02、ethtool 工具关于网络协商功能介绍;

  ethtool - Display or change ethernet card settings(ethtool 是用来显示和更改网卡设置的工具);这个工具比较复杂,功能也特别多。由于洋文比较难懂。所以我们还是把网络设备协商方式的设置方法说一说。

  2.1 ethtool 显示网络端口设置功能;

  这个功能比较好办。就是ethtool 后面直接接网絽接口就行;比如下面的例子;

  [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: 0x00000007 (7)

  Link detected: yes 注:eth0已经激活;

  2.2 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 ]

  * 实例一: 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: 0x00000007 (7)

  Link detected: no 注:eth1没有激活;

  * 实例二: 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: 0x00000007 (7)

  Link detected: no 注:eth1网卡没有激活;

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