檢視Linux下網絡卡狀態或 是否連線

2022-06-15 09:48:10 字數 3876 閱讀 5570

分類:

1)通過mii-tool指令

[root@localhost root]# mii-tool

eth0: negotiated 100basetx-fd, link ok

eth1: no link

或[root@localhost root]# mii-tool -v

eth0: negotiated 100basetx-fd, link ok

product info: vendor 00:50:43, model 2 rev 3

basic mode:   autonegotiation enabled

basic status: autonegotiation complete, link ok

capabilities: 100basetx-fd 100basetx-hd 10baset-fd 10baset-hd

advertising: 100basetx-fd 100basetx-hd 10baset-fd 10baset-hd flow-control

link partner: 100basetx-fd 100basetx-hd 10baset-fd 10baset-hd

eth1: no link

product info: vendor 00:50:43, model 2 rev 3

basic mode:   autonegotiation enabled

basic status: no link

capabilities: 100basetx-fd 100basetx-hd 10baset-fd 10baset-hd

advertising: 100basetx-fd 100basetx-hd 10baset-fd 10baset-hd flow-control

或[root@localhost root]# mii-tool -w

21:20:33 eth0: negotiated 100basetx-fd, link ok

21:20:33 eth1: no link

//mii-tool主要是用於配置網絡卡工作模式的指令,同時也可以進行查詢、監控等工作!

2)

[root@localhost /]#/etc/init.d/network status

configured devices:

lo eth0 eth1

currently active devices:

lo eth0

等同於[root@localhost root]# service --status-all

............

............

configured devices:

lo eth0 eth1

currently active devices:

lo eth0

............

............

3)ifconfig -a

[root@localhost /]# ifconfig -a

eth0 link encap:ethernet hwaddr 00:09:6b:09:08:fc

inet addr:192.168.10.1 bcast:192.168.10.255 mask:255.255.255.0

inet6 addr: fe80::209:6bff:fe09:8fc/64 scope:link

up broadcast running multicast mtu:1500 metric:1

rx packets:106732953 errors:0 dropped:0 overruns:0 frame:0

tx packets:104379788 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:100

rx bytes:2351331877 (2.1 gib) tx bytes:391707945 (373.5 mib)

base address:0x2500 memory:fbfe0000-fc000000

eth1   link encap:ethernet hwaddr 00:09:6b:09:08:fd

broadcast multicast mtu:1500 metric:1

rx packets:0 errors:0 dropped:0 overruns:0 frame:0

tx packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

rx bytes:0 (0.0 b) tx bytes:0 (0.0 b)

base address:0x2540 memory:fbfc0000-fbfe0000

4)ethtool

#ethtool eth0

settings for eth0:

supported ports: [ mii ]

supported link modes:   10baset/half 10baset/full

100baset/half 100baset/full

1000baset/half 1000baset/full

supports auto-negotiation: yes

advertised link modes: 10baset/half 10baset/full

100baset/half 100baset/full

1000baset/half 1000baset/full

advertised auto-negotiation: yes

speed: 100mb/s

duplex: full

port: twisted pair

phyad: 1

transceiver: internal

auto-negotiation: on

supports wake-on: g

wake-on: d

current message level: 0x000000ff (255)

link detected: yes

#ethtool eth1

settings for eth1:

supported ports: [ mii ]

supported link modes:   10baset/half 10baset/full

100baset/half 100baset/full

1000baset/half 1000baset/full

supports auto-negotiation: yes

advertised link modes: 10baset/half 10baset/full

100baset/half 100baset/full

1000baset/half 1000baset/full

advertised auto-negotiation: yes

speed: unknown! (0)

duplex: half

port: twisted pair

phyad: 1

transceiver: internal

auto-negotiation: on

supports wake-on: g

wake-on: d

current message level: 0x000000ff (255)

link detected: no

從上面可以看出eth0 處於連線狀態,eth1沒有連線

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