怎样查看 linux 的网卡信息

Posted 2023-04-24

Linux查看网卡信息，可以通过nmcli命令来进行获取:

1、查看网卡信息

2、查看网卡的连接状态

3、查看网卡的详细信息

参考技术A

启动linux系统

打开终端

输入命令

ifconfig eth0

查看eth0网卡信息

或输入ifconfig查看网络信息

参考技术B

lspci 命令 : 列出所有PCI设备

# lspci  | egrep -i --color 'network|ethernet'


lshw 命令 :列出设备上所有硬件

# lshw -class network


dmidecode 命令 : 列出所有bios上能读出的硬件

# dmidecode


ifconfig 命令 : 列出网卡

ifconfig eth0/wlan0

参考技术C ifconfig终端执行 参考技术D 输入ifconfig

linux下查看网卡信息的命令

rhel 内核版本号信息：

[[email protected] ~]# uname -a
Linux hvrhub 2.6.18-308.el5 #1 SMP Fri Jan 27 17:17:51 EST 2012 x86_64 x86_64 x86_64 GNU/Linux

 

查看网卡的驱动。制造商等信息：

[[email protected] ~]# kudzu --probe --class=network
-
class: NETWORK
bus: PCI
detached: 0
device: eth0
driver: r8169 ---------------->这是驱动名称，以下的modinfo命令会用到该驱动名称。
desc: "Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller"
network.hwaddr: 20:cf:30:8f:5a:cf
vendorId: 10ec
deviceId: 8136
subVendorId: 1043
subDeviceId: 8347
pciType: 1
pcidom:    0
pcibus:  1
pcidev:  0
pcifn:  0
[[email protected] ~]# 

以下是查看网卡的网速：

[[email protected] ~]# ethtool eth0
Settings for eth0:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s  ------------------------------------>网卡速度
        Duplex: Full
        Port: MII
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        Supports Wake-on: pumbg
        Wake-on: g
        Current message level: 0x00000033 (51)
        Link detected: yes

以下是查看网卡驱动的具体信息

[[email protected] ~]# modinfo r8169
filename:       /lib/modules/2.6.18-308.el5/kernel/drivers/net/r8169.ko
version:        2.3LK-1-NAPI
license:        GPL
description:    RealTek RTL-8169 Gigabit Ethernet driver
author:         Realtek and the Linux r8169 crew <[email protected]>
srcversion:     2F438BE7BC0FF431B08F6F4
alias:          pci:v00000001d00008168sv*sd00002410bc*sc*i*
alias:          pci:v00001737d00001032sv*sd00000024bc*sc*i*
alias:          pci:v000016ECd00000116sv*sd*bc*sc*i*
alias:          pci:v00001259d0000C107sv*sd*bc*sc*i*
alias:          pci:v00001186d00004300sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008169sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008168sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008167sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008136sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008129sv*sd*bc*sc*i*
depends:        mii
vermagic:       2.6.18-308.el5 SMP mod_unload gcc-4.1
parm:           rx_copybreak:Copy breakpoint for copy-only-tiny-frames (int)
parm:           use_dac:Enable PCI DAC. Unsafe on 32 bit PCI slot. (int)
parm:           debug:Debug verbosity level (0=none, ..., 16=all) (int)
module_sig:     883f3504f23243d2d3142b3e704051112e6b709e3b544a3e206c72e140c0edbb9629d3b31086569609f535d83d8f076749cbfa5d34d39be5319c1cc321

 

例如以下命令能看出来是不是集成网卡？---有待验证。 

[[email protected] ~]# dmidecode | sed -n ‘/net/,+5p‘
        Type: Ethernet
        Status: Enabled
        Description:  Onboard Ethernet  ------------------->这个意思是不是说这是集成网卡？有机会的话，弄个pci网卡上去，再运行此命令看看是啥输出。

Handle 0x0020, DMI type 11, 5 bytes
OEM Strings

以下的命令也能看出网卡控制器的制造商信息。

[[email protected] ~]# lspci | grep Ethernet
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
[[email protected] ~]# 

 

查看网卡网速的另外一个命令：

[[email protected] .vnc]# ethtool -i eth0
driver: r8169
version: 2.3LK-1-NAPI
firmware-version: 
bus-info: 0000:03:00.0
[[email protected] .vnc]# ethtool -i eth1
driver: r8169
version: 2.3LK-1-NAPI
firmware-version: 
bus-info: 0000:04:06.0
[[email protected] .vnc]#