Modify the Nic working mode in Linux

Article title: modify the Nic working mode in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

Method 1:

Run the ethtool command.

View the current working mode

Ethtool eth0

Set to full duplex of megabytes, disable adaptive

Ethtool-s eth0 speed 100 duplex full autoneg off

Method 2:

1. view the Nic working mode and enter the following command:

# Mii-tool-v

Eth0: negotiated 100baseTx-FD, link OK

Product info: Vendor 00: 05: be, model 8 rev 0

Basic status: autonegotiation complete, link OK

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Basic mode: autonegotiation enabled.

Capabilities :..............

From the above information, we can see that this network card works in 100 M Full Duplex adaptive mode, "basetx-fd" means M Full Duplex.

2. change the Nic working mode and enter the following command:

# Mii-tool-F media [interface]

Media optional modes include 100baseTx-FD, 100baseTx-HD, 10baseT-FD, and 10baseT-HD. Interface indicates the selected Nic, such as eth0 and eth1. the default value is eth0.

For example, to set the NIC to work in 10 m half duplex mode, enter the following command:

# Mii-tool-F 10baseT-HD eth0

3. restore the adaptive working mode of the network adapter. enter the following command:

# Mii-tool-r eth0

You can use mii-tool-h for more detailed usage.

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