Transmission Control Protocol - Header
TCP header is used to find source port and destination port address. TCP
header size is fixed and it is of 20 bytes. TCP header can take up to 65525 data
byte with use of its features. TCP header attach with data called segment in
Transport layer.
Let us discuss its each field of TCP header. ( Please go though the above
diagram).
1. Source Port : This field contain the address of source port and it is of 16 bits.
2. Destination Port : This field contain the address of Destination port and it is
of 16 bits.
3. Sequence No : Sequence no is the No. assigned to each byte of data. so that
it can be identify. It is of 32 bits. This field contains the Sequence no of first
byte.
TCP header is used to find source port and destination port address. TCP
header size is fixed and it is of 20 bytes. TCP header can take up to 65525 data
byte with use of its features. TCP header attach with data called segment in
Transport layer.
Let us discuss its each field of TCP header. ( Please go though the above
diagram).
1. Source Port : This field contain the address of source port and it is of 16 bits.
2. Destination Port : This field contain the address of Destination port and it is
of 16 bits.
3. Sequence No : Sequence no is the No. assigned to each byte of data. so that
it can be identify. It is of 32 bits. This field contains the Sequence no of first
byte.