NETWORK LAYERS Application eg.ssh Transport UDP,TCP Internet Packets Link Ethernet *) To show up all interface and info execute ip addr show ---------------------------------- rahul@rahul-Inspiron-3542:~$ ip addr show 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 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: enp7s0: mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether 74:e6:e2:00:24:53 brd ff:ff:ff:ff:ff:ff ---------------------------------- *) To show information about an interface execute ip -s link show l0 ---------------------------------- rahul@rahul-Inspiron-3542:~$ ip -s link show lo 1: lo: mtu 65536 ...