Whenever an octet represents a numeric quantity the left most bit in the diagram is the high order or most significant bit. That is, the bit labeled 0 is the most significant bit. For example, the following diagram represents the value 170 (decimal).
Similarly, whenever a multi-octet field represents a numeric quantity the left most bit of the whole field is the most significant bit. When a multi-octet quantity is transmitted the most significant octet is transmitted first.
[Page 39]
September 1981 Internet Protocol
[Page 40]
September 1981 Internet Protocol
GLOSSARY
1822 BBN Report 1822, "The Specification of the Interconnection of a Host and an IMP". The specification of interface between a host and the ARPANET.
ARPANET leader The control information on an ARPANET message at the host-IMP interface.
ARPANET message The unit of transmission between a host and an IMP in the ARPANET. The maximum size is about 1012 octets (8096 bits).
ARPANET packet A unit of transmission used internally in the ARPANET between IMPs. The maximum size is about 126 octets (1008 bits).
Destination The destination address, an internet header field.
DF The Don't Fragment bit carried in the flags field.
Flags An internet header field carrying various control flags.
Fragment Offset This internet header field indicates where in the internet datagram a fragment belongs.
GGP Gateway to Gateway Protocol, the protocol used primarily between gateways to control routing and other gateway functions.
header Control information at the beginning of a message, segment, datagram, packet or block of data.
ICMP Internet Control Message Protocol, implemented in the internet module, the ICMP is used from gateways to hosts and between hosts to report errors and make routing suggestions.
[Page 41]
September 1981 Internet Protocol Glossary
Identification An internet header field carrying the identifying value assigned by the sender to aid in assembling the fragments of a
精品推荐