1.先查看网卡

# ifconfig

docker0: flags=4163 mtu 1500

inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255

inet6 fe80::42:acff:fe45:985 prefixlen 64 scopeid 0x20

ether 02:42:ac:45:09:85 txqueuelen 0 (Ethernet)

RX packets 141370815 bytes 100379736898 (93.4 GiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 140997320 bytes 61931276928 (57.6 GiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eno16777984: flags=4163 mtu 1500

inet 10.10.22.175 netmask 255.255.255.0 broadcast 10.10.22.255

inet6 fe80::250:56ff:fe8b:469e prefixlen 64 scopeid 0x20

ether 00:50:56:8b:46:9e txqueuelen 1000 (Ethernet)

RX packets 443262260 bytes 377347425802 (351.4 GiB)

RX errors 0 dropped 489 overruns 0 frame 0

TX packets 234458160 bytes 423618667541 (394.5 GiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

...

2.查看指定网卡带宽

# sudo ethtool eno16777984

Settings for eno16777984:

Supported ports: [ TP ]

Supported link modes: 1000baseT/Full

10000baseT/Full

Supported pause frame use: No

Supports auto-negotiation: No

Advertised link modes: Not reported

Advertised pause frame use: No

Advertised auto-negotiation: No

Speed: 10000Mb/s

Duplex: Full

Port: Twisted Pair

PHYAD: 0

Transceiver: internal

Auto-negotiation: off

MDI-X: Unknown

Supports Wake-on: uag

Wake-on: d

Link detected: yes

查看speed，表示为万兆网卡！