Cara mengecek kecepatan NIC pada linux

sudo yum install ethtool

[root@labs ~]# sudo yum install ethtool
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
epel/x86_64/metalink                                                                              | 5.1 kB  00:00:00
 * epel: d2lzkl7pfhq30w.cloudfront.net
base                                                                                              | 3.6 kB  00:00:00
extras                                                                                            | 2.9 kB  00:00:00
updates                                                                                           | 2.9 kB  00:00:00
zimbra                                                                                            | 3.0 kB  00:00:00
zimbra-8815-oss                                                                                   | 3.0 kB  00:00:00
Package 2:ethtool-4.8-10.el7.x86_64 already installed and latest version
Nothing to do
[root@mail ~]#

sudo apt install ethtool

[root@mail ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:e0:4c:b7:2d:35 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.100/24 brd 192.168.10.255 scope global noprefixroute enp2s0
       valid_lft forever preferred_lft forever
    inet6 fe80::3dd8:e347:ca91:cb87/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
[root@labs ~]#

[root@labs ~]# ethtool enp2s0
Settings for enp2s0:
        Supported ports: [ TP AUI BNC MII FIBRE ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Link partner advertised link modes:  10baseT/Half 10baseT/Full
                                             100baseT/Half 100baseT/Full
                                             1000baseT/Full
        Link partner advertised pause frame use: No
        Link partner advertised auto-negotiation: Yes
        Link partner advertised FEC modes: Not reported
        Speed: 1000Mb/s
        Duplex: Full
        Port: MII
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        Supports Wake-on: pumbg
        Wake-on: d
        Current message level: 0x00000033 (51)
                               drv probe ifdown ifup
        Link detected: yes
[root@labs ~]#