medium
2 min read
IPv6 header
IPv6 Header The IPv6 header is a 40-bit long packet header that is added to the beginning of every IPv6 packet. It contains information about the originatin...
Quick Actions
Insights
Difficultymedium
Reading Time2 min
IPv6 Header The IPv6 header is a 40-bit long packet header that is added to the beginning of every IPv6 packet. It contains information about the originatin...
IPv6 Header
The IPv6 header is a 40-bit long packet header that is added to the beginning of every IPv6 packet. It contains information about the originating and receiving nodes and the packet's general direction.
Components of the IPv6 header:
Version: This field specifies the version of the IPv6 header being used. The current version is 6.
Header checksum: This field contains a checksum that is calculated over the header content. The receiving node can use this checksum to detect any errors in the header.
Total length: This field specifies the total length of the IPv6 packet, which includes the header itself.
Identification: This field contains a unique identifier for the sending node.
Time to live: This field specifies the number of seconds the packet is allowed to be in transit before it is discarded.
Header checksum: This field contains a checksum that is calculated over the header content.
Purpose of the IPv6 header:
The IPv6 header provides the necessary information for the router to route the packet to its destination. It allows the router to determine the best path to the destination and the order in which the packets should be transmitted.
Example:
Version: 6
Header checksum: 0x12345678
Total length: 56
Identification: 123456
Time to live: 60
Header checksum: 0x98765432