Connected: An Internet Encyclopedia
GLOSSARY
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Connected: An Internet Encyclopedia
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Requests For Comments
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RFC 791
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GLOSSARY
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.
- Identification
-
An internet header field carrying the identifying value
assigned by the sender to aid in assembling the fragments of a
datagram.
- IHL
-
The internet header field Internet Header Length is the length
of the internet header measured in 32 bit words.
- IMP
-
The Interface Message Processor, the packet switch of the
ARPANET.
- Internet Address
-
A four octet (32 bit) source or destination address consisting
of a Network field and a Local Address field.
- internet datagram
-
The unit of data exchanged between a pair of internet modules
(includes the internet header).
- internet fragment
-
A portion of the data of an internet datagram with an internet
header.
- Local Address
-
The address of a host within a network. The actual mapping of
an internet local address on to the host addresses in a
network is quite general, allowing for many to one mappings.
- MF
-
The More-Fragments Flag carried in the internet header flags
field.
- module
-
An implementation, usually in software, of a protocol or other
procedure.
- more-fragments flag
-
A flag indicating whether or not this internet datagram
contains the end of an internet datagram, carried in the
internet header Flags field.
- NFB
-
The Number of Fragment Blocks in a the data portion of an
internet fragment. That is, the length of a portion of data
measured in 8 octet units.
- octet
-
An eight bit byte.
- Options
-
The internet header Options field may contain several options,
and each option may be several octets in length.
- Padding
-
The internet header Padding field is used to ensure that the
data begins on 32 bit word boundary. The padding is zero.
- Protocol
-
In this document, the next higher level protocol identifier,
an internet header field.
- Rest
-
The local address portion of an Internet Address.
- Source
-
The source address, an internet header field.
- TCP
-
Transmission Control Protocol: A host-to-host protocol for
reliable communication in internet environments.
- TCP Segment
-
The unit of data exchanged between TCP modules (including the
TCP header).
- TFTP
-
Trivial File Transfer Protocol: A simple file transfer
protocol built on UDP.
- Time to Live
-
An internet header field which indicates the upper bound on
how long this internet datagram may exist.
- TOS
-
Type of Service
- Total Length
-
The internet header field Total Length is the length of the
datagram in octets including internet header and data.
- TTL
-
Time to Live
- Type of Service
-
An internet header field which indicates the type (or quality)
of service for this internet datagram.
- UDP
-
User Datagram Protocol: A user level protocol for transaction
oriented applications.
- User
-
The user of the internet protocol. This may be a higher level
protocol module, an application program, or a gateway program.
- Version
-
The Version field indicates the format of the internet header.
Next: REFERENCES
Connected: An Internet Encyclopedia
GLOSSARY