USB 3.0

The most important and the only working part of any protocol is its HEADER. Without a Header any Protocol is useless. And thus its description and explanation is mandatory. The figure shown below is the IPV6 Header, which is much more simplified than its previous one.
Version: 4-bit Internet Protocol version number = 6.
Traffic Class: 8-bit traffic class field.
Flow Label: 20-bit flow label.
IPV6 HEADER
Payload Length: 16-bit unsigned integer. Length of the IPv6 payload, i.e., the rest
of the packet following this IPv6 header is in octets. (Note that
any extension headers present are considered part of
the payload, i.e., included in the length count.)
Next Header: 8-bit selector. Identifies the type of header immediately
following the IPv6 header. Uses the same values as the IPv4
Protocol field
Hop Limit: 8-bit unsigned integer. Decremented by 1 by each node that
forwards the packet. The packet is discarded if Hop Limit is
decremented to zero.
Source Address: 128-bit address of the originator of the packet.
Destination Address: 128-bit address of the intended recipient of the packet (possibly
not the ultimate recipient, if a Routing header is present).