Linux network card (set Gigabit NIC speed and mode)

Ethtool is a command for querying and setting network card parameters.

Profile:

Ethtool EthX//Query EthX network Port basic settings

ETHTOOL–H//Show command Help for Ethtool

Ethtool–i EthX//query EthX information about the network port

Ethtool–d EthX//Query EthX network Port registration information

Ethtool–r EthX//Reset EthX mesh to Adaptive mode

Ethtool–s EthX//Query EthX network Port receipt Package statistics

Ethtool–s EthX [Speed 10|100|1000]\//Set network port rate 10/100/1000m

[Duplex half|full]\//Set network port half/full Duplex

[Autoneg on|off]\//Set the network port for self-negotiation

[Port tp|aui|bnc|mii]\//Set network Port type

[Phyad n]\

[Xcvr internal|exteral]\

[Wol p|u|m|b|a|g|s|d ...] \

[Sopass xx:yy:zz:aa:bb:cc]\

[Msglvl N]

Example:

1) [[email protected]/]# Ethtool eth1

Settings for eth1:

Supported ports: [TP]

Supported Link Modes:10baset/half 10baset/full

100baset/half 100baset/full

1000baset/full

Supports Auto-negotiation:yes

Advertised Link Modes:10baset/half 10baset/full

100baset/half 100baset/full

1000baset/full

Advertised Auto-negotiation:yes

speed:1000mb/s

Duplex:full

Port:twisted Pair

phyad:0

Transceiver:internal

Auto-negotiation:on

Supports WAKE-ON:UMBG

Wake-on:d

Link Detected:yes

2) [[email protected]/]# ethtool-i eth1

driver:e1000

Version:5.0.43-k1

firmware-version:n/a

bus-info:06:08.1

3) [[email protected]/]# ethtool-s eth1

NIC Statistics:

rx_packets:58068300

tx_packets:87124083

rx_bytes:1589713008

tx_bytes:2165825901

rx_errors:0

tx_errors:0

rx_dropped:0

tx_dropped:0

multicast:0

collisions:0

rx_length_errors:0

rx_over_errors:0

rx_crc_errors:0

rx_frame_errors:0

rx_fifo_errors:0

rx_missed_errors:0

tx_aborted_errors:0

tx_carrier_errors:0

tx_fifo_errors:0

tx_heartbeat_errors:0

tx_window_errors:0

4) [[email protected]/]# ethtool-s eth1 Autoneg off speed + duplex full

Related:

1) [[email protected]/]# which Ethtool

/sbin/ethtool

2) [[email protected]/]# Rpm-qf/sbin/ethtool

Ethtool-1.6-5

3) How to make Ethtool settings permanently stored in network devices?

Workaround One:

Ethtool settings can be saved through the/etc/sysconfig/network-scripts/ifcfg-ethx file to activate the option the next time the device starts.

Example: ethtool-s eth0 speed of duplex full Autoneg off

This instruction sets the eth0 device to full-duplex adaptive at a speed of 100Mbs. To set these parameters eth0 startup, modify the file/etc/sysconfig/network-scripts/ifcfg-eth0, adding the following line:

Ethtool_opts= "Speed of duplex full Autoneg off"

Workaround Two:

Writes the Ethtool settings to the/etc/rc.d/rc.local.

This article is from the "I Learn my use" blog, please be sure to keep this source http://593095349.blog.51cto.com/8497121/1603746

Linux network card (set Gigabit NIC speed and mode)