作業環境:
Centos 6.5 x86_64
ethtool
操作步驟:
查看此時網口em1裝置資訊
[root@ceph-osd-2 ~]# ethtool em1Settings for em1: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: on MDI-X: Unknown Supports Wake-on: g Wake-on: d Link detected: yes
使用ethtool顯示em1網口速率,提示無法設定
[root@ceph-osd-2 ~]# ethtool -s em1 speed 100Cannot advertise speed 100
後來尋找資料,正確設定方法如下
#ethtool -s em1 speed 100 duplex full autoneg off
查看此時em1網口資訊
[root@ceph-osd-2 ~]# ethtool em1Settings for em1: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Speed: 100Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: off MDI-X: Unknown Supports Wake-on: g Wake-on: d Link detected: yes
配置成功