Continue...Mention briefly the significance of different fields in the IPv4 Header.
Fragment Offset (13 bits):
byte count that indicates where in the original datagram this fragment belongs.
Time to Live (TTL):
Number of hops a packet may be routed over that limits its lifetime to prevent routing loops.
Protocol (8 bits):
Defines the next protocol that is to receive the data field.
Header Checksum (16 bits):
Error detector for the header only.
Source Address (32 bits):
IP address indicating the sender of the packet.
Destination Address (32 bits):
IP address indicating the receiver of the packet.
- Options Padding (variable): The Options part holds the options requested by the sender.
- The Padding part is used to ensure that the header is a multiple of 32 bits.