ethtool -p DEVNAME   查看相应设备名称对应的设备位置

使用方法如下：

ethtool -p eth0

回车后与eth0 相对应的网卡接口旁边的指示灯就会闪烁，这样你就能很快确定eth0 网口的位置啦。(按下Ctrl+C 结束命令，停止闪烁)

查看linux下网卡状态是否连接

[root@x101 ~]# ethtool eth1

Settings for eth1:

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: Unknown!

Duplex: Unknown! (255)

Port: Twisted Pair

PHYAD: 0

Transceiver: internal

Auto-negotiation: on

MDI-X: Unknown (auto)

Supports Wake-on: d

Wake-on: d

Current message level: 0x00000007 (7)

drv probe link

Link detected: no

[root@x101 ~]# ip a

1: lo: mtu 65536 qdisc noqueue state UNKNOWN qlen 1

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

inet 127.0.0.1/8 scope host lo

valid_lft forever preferred_lft forever

inet6 ::1/128 scope host

valid_lft forever preferred_lft forever

2: eth0: mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000

link/ether 00:0c:29:bc:12:d3 brd ff:ff:ff:ff:ff:ff

3: eth1: mtu 1500 qdisc pfifo_fast state DOWN qlen 1000

link/ether 00:0c:29:bc:12:dd brd ff:ff:ff:ff:ff:ff

4: bond0: mtu 1500 qdisc noqueue state UP qlen 1000

link/ether 00:0c:29:bc:12:d3 brd ff:ff:ff:ff:ff:ff

inet 192.168.0.108/24 brd 192.168.0.255 scope global bond0

valid_lft forever preferred_lft forever

inet 192.168.0.110/24 scope global secondary bond0

valid_lft forever preferred_lft forever

inet 192.168.0.112/24 scope global secondary bond0:1

valid_lft forever preferred_lft forever

inet6 fe80::9de8:66ee:bba5:8f9a/64 scope link

valid_lft forever preferred_lft forever