privdes connections and routes packets in the communication network inluding handling the adresss of outgoing packets, decoding the address of incoming packets and aintaining routing information for proper order
privdes connections and routes packets in the communication network inluding handling the adresss of outgoing packets, decoding the address of incoming packets and aintaining routing information for proper order
using routing protocols for best route: icmp (internet control message protocol), or arp (address resolution protocol). if the packet is too big, fragmentation can happen.