Miitool和ethtool


改變網絡接口的速度和協商方式的工具 miitool ethtool
經過 mii-tool ethtool 工具來調整網卡的速度、雙工等,這樣能提升網卡的效率;
mii-tool 配置網絡設備協商方式的工具
mii-tool 介紹
mii-tool - view, manipulate media-independent interface status mii-tool 是查看,管理介質的網絡接口的狀態)
有時網卡須要配置協商方式 ,好比 10/100/1000M 的網卡半雙工、全雙工、自動協商的配置 。但大多數的網絡設備是不用咱們來修改協商,由於大多數網絡設置接入的時候,都採用自動協商來解決相互通訊的問題。但在有的狀況下,須要咱們手動來設置網卡的協商方式;
mii-tool 就是能指定網卡的協商方式。
註明:我在使用 mii-tool 工具修改協商模式時,提示是錯誤的,由於是在虛擬機中作的,不過虛擬機中的網卡我查看是支持全雙工模式的,但是提示錯誤 SIOCGMIIPHY on 'eth0' failed: Operation not supported ,問題出在那裏也不清楚,用 google 查了下,發現很多人都是這樣的錯誤,也沒說明緣由;不過多數人提示能夠使用 ethtool 工具去修改,我測試了下,還行!還有一種方法是修改 /etc/modules.conf 配置文件;
ethtool -s eth0 autoneg off
ethtool -s eth0 duplex full
/etc/modules.conf 添加內容
alias eth0 bcm5700 line_speed=100 full_duplex=1
options  bcm5700 line_speed=100 full_duplex=1
重起!
mii-tool 更改網絡接口協商的方法;
[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:顯示網絡接口的信息;
       -R, --reset reset MII to poweron state 注:重設MII到開啓狀態;
       -r, --restart restart autonegotiation 注:重啓自動協商模式;
       -w, --watch monitor for link status changes 注:查看網絡接口鏈接的狀態變化;
       -l, --log with -w, write events to syslog 注:寫入事件到系統日誌;
       -A, --advertise=media,... advertise only specified media 注:指令特定的網絡接口;
       -F, --force=media force specified media technology 注:更改網絡接口協商方式;
media: 100baseT4, 100baseTx-FD, 100baseTx-HD, 10baseT-FD, 10baseT-HD,
       (to advertise both HD and FD) 100baseTx, 10baseT
 
查看網絡接口的協商狀態
[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,咱們能夠看獲得是自動協商。注意紅字的部份;
更改網絡接口協商方式;
更改網絡接口的協商方式,咱們要用到- F 選項,後面能夠接 100baseT4, 100baseTx-FD, 100baseTx-HD, 10baseT-FD, 10baseT-HD 等參數;
把網絡接口 eth0 改成 1000Mb/s 全雙工的模式
[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
也能夠使用 ethtool 工具修改:
 [root@localhost]# ethtool -s eth0 speed 100 duplex full
ethtool 工具關於網絡協商功能介紹
ethtool - Display or change ethernet card settings ethtool 是用來顯示和更改網卡設置的工具);這個工具比較複雜,功能也特別多;
ethtool 顯示網絡端口設置功能
[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:自動協商關閉
        Speed: 100Mb/s 注:速度 100Mb
        Duplex: Full 注:全雙工
        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已經激活;
ethtool 設置網卡的協商模式;
ethtool -s DEVNAME \
                [ speed 10|100|1000 ] \
                [ duplex half|full ] \
                [ port tp|aui|bnc|mii|fibre ] \
                [ autoneg on|off ] \
把網卡 eth0 速度改成 10Mb/s ,採用半雙工;
[root@localhost]# ethtool -s eth1 speed 10 duplex half
[root@localhost]# 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:半雙工
        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沒有激活;
把網卡 eth0 速度改成 100Mb/s ,採用全雙工;
[root@localhost]# ethtool -s eth1 speed 100 duplex full
[root@localhost]# 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:全雙工
        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網卡沒有激活;
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