1、ethtool

ethtool 网络接口名

#ethtool em4

Settings for em4:

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 pause frame use: No

Advertised auto-negotiation: Yes

Speed: 1000Mb/s

Duplex: Full

Port: Twisted Pair

PHYAD: 1

Transceiver: internal

Auto-negotiation: on

MDI-X: Unknown

Supports Wake-on: g

Wake-on: d

Link detected: yes

2、lspci

当前是博通BCM5709千兆网卡Gigabit(万兆网卡显示为10-Gigabit)

#lspci -vvv | grep Ethernet

01:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 GigabitEthernet (rev 20)

Subsystem: Dell PowerEdge R710 BCM5709 Gigabit Ethernet

Product Name: Broadcom NetXtreme II Ethernet Controller

01:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20)

Subsystem: Dell PowerEdge R710 BCM5709 Gigabit Ethernet

Product Name: Broadcom NetXtreme II Ethernet Controller

02:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20)

Subsystem: Dell PowerEdge R710 BCM5709 Gigabit Ethernet

Product Name: Broadcom NetXtreme II Ethernet Controller

02:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20)

Subsystem: Dell PowerEdge R710 BCM5709 Gigabit Ethernet

Product Name: Broadcom NetXtreme II Ethernet Controller

pcilib: sysfs_read_vpd: read failed: Connection timed out

小知识：

Gigabit是数据存储的单位，通常用符号Gbit或Gb表示。它的换算公式：1 Gb = 10的9次方 bits = 1,000,000,000 bits 。

另一个常见的单位是Gibibit，gibibit是用来表示二进制换算的，1 gibibit = 2的30次方 bits = 1,073,741,824 bits。