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标题: linux下修改网卡传输速率 [打印本页]

作者: miss_puff 时间: 2018-9-7 15:50
标题: linux下修改网卡传输速率
要求：将ens33网卡的传输速率由1000m/s修改为100m/s
1、查看ens33网卡传输速率
[root@18c expdp]# ethtool ens33
Settings for ens33:
      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: 0
      Transceiver: internal
      Auto-negotiation: on
      MDI-X: off (auto)
      Supports Wake-on: d
      Wake-on: d
      Current message level: 0x00000007 (7)
                           drv probe link
      Link detected: yes

2、修改网卡传输速率为100m/s
[root@18c expdp]# ethtool -s ens33 speed 100 duplex full autoneg off

3、查看
[root@18c expdp]# ethtool ens33
Settings for ens33:
      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: 0
      Transceiver: internal
      Auto-negotiation: off
      MDI-X: off (auto)
      Supports Wake-on: d
      Wake-on: d
      Current message level: 0x00000007 (7)
                           drv probe link
      Link detected: yes
[root@18c expdp]#

要想永久生效需要写到配置文件/etc/sysconfig/network-scripts/ifcfg-ens33
[root@18c network-scripts]# tail -2 ifcfg-ens33
IPV6_PEERROUTES=yes
ETHTOOL_OPTS="speed 100 duplex full autoneg off"

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