网络层面基础命令

1.查看网卡速率

可以通过如下三个命令进行查看

1.ethtool命令

[root@confluence ~]# ethtool eth0
Settings for eth0:
    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: Unknown
    Supports Wake-on: d
    Wake-on: d
    Current message level: 0x00000007 (7)
                   drv probe link
    Link detected: yes

2.lspci

#万兆网卡显示为10-Gigabit，千兆网卡显示Gigabit，但是不方便看网卡名称。
[root@confluence ~]# lspci |grep Ethernet
02:00.0 Ethernet controller: Intel Corporation 82545EM Gigabit Ethernet Controller (Copper) (rev 01)

3.dmesg

看到 Up 1000Mps full duplex 就知道是千兆网卡了。

[root@confluence ~]# dmesg |grep eth0
e1000 0000:02:00.0: eth0: (PCI:66MHz:32-bit) 00:0c:29:41:d0:db
e1000 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection
e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
eth0: no IPv6 routers present