查看linux是不是萬兆網的方法：1、透過ethtool和lspci命令查看網卡是千兆還是萬兆網卡；2、透過ifconfig命令查看機器網路端口，然後執行“sudo ethtool eno1”指令查看網路頻寬是千兆還是萬兆即可。
本教學操作環境：linux5.9.8系統、Dell G3電腦。
怎麼看linux是不是萬兆網路？
Linux檢視網卡是千兆還是萬兆網路卡
#目前用過的兩個指令：
1、ethtool
ethtool 網路介面名稱
#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
目前是博通BCM5709千兆網路卡Gigabit（萬兆網路卡顯示為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
小知識：
Gigabit是資料儲存的單位，通常用符號Gbit或Gb表示。它的換算公式：1 Gb = 10的9次方 bits = 1,000,000,000 bits 。
另一個常見的單位是Gibibit，gibibit是用來表示二元換算的，1 gibibit = 2的30次方 bits = 1,073,741,824 bits。
Linux 查看網路頻寬是千兆還是萬兆
先查看機器網路連接埠
[root@namenode ~]# ifconfig
eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.60.190 netmask 255.255.255.0 broadcast 192.168.80.255
inet6 fe80::b62e:99ff:fe65:3bd6 prefixlen 64 scopeid 0x20<link>
ether b4:2e:99:65:3b:d6 txqueuelen 1000 (Ethernet)
RX packets 1034361639 bytes 496433512301 (462.3 GiB)
RX errors 0 dropped 144034 overruns 0 frame 0
TX packets 977985340 bytes 163296216477 (152.0 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16 memory 0xf7200000-f7220000檢視連接埠頻寬(root或sudo權限)，透過下面輸出可以看到speed那一行，表示千兆網路。
[root@namenode ~]# sudo ethtool eno1
Settings for eno1:
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: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: off (auto)
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes相關推薦：《Linux影片教學》
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