What is the TTL (Time to Live)? Why is it required? | Android

TTL is a value in data packet of Internet Protocol. It communicates to the network router whether or not the packet should be in the network for too long or discarded. Usually, data packets might not be transmitted to their intended destination within a stipulated period of time. The TTL value is set by a system default value which is an 8 -bit binary digit field in the header of the packet. The purpose of TTL is, it would specify certain time limit in seconds, for transmitting the packet header. When the time isexhausted, the packet would be discarded. Each router receives the subtracts courwhen the packet is discarded, and when it becomes zero, the router tects the discarded packets and sends a message, Internet Control Messa Protocol message back to the originating host.