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encapsulation
encryption
Ethernet crossover cable
FCS
flow control
fragmentation
frame
FTP
FTP server
hardware handshake
HDLC
HDSL
header
Cayman 3220-H User's Guide
December 2000
Technique used to enclose information formatted for one protocol,
such as AppleTalk, within a packet formatted for a different
protocol, such as TCP/IP.
The application of a specific algorithm to a data set so that anyone
without the encryption key cannot understand the information.
See crossover cable.
Frame Check Sequence. Data included in frames for error control.
Technique using hardware circuits or control characters to regulate
the transmission of data between a computer (or other DTE) and a
modem (or other DCE). Typically, the modem has buffers to hold
data; if the buffers approach capacity, the modem signals the
computer to stop while it catches up on processing the data in the
buffer. See CTS, RTS, xon/xoff.
Process of breaking a packet into smaller units so that they can be
sent over a network medium that cannot transmit the complete
packet as a unit.
Logical grouping of information sent as a link-layer unit. Compare
datagram, packet.
File Transfer Protocol. Application protocol that lets one IP node
transfer files to and from another node.
Host on network from which clients can transfer files.
Method of flow control using two control lines, usually Request to
Send (RTS) and Clear to Send (CTS).
High-level Data Link Control.
High-data-rate Digital Subscribe Line. Modems on either end of one
or more twisted pair wires that deliver T1 or E1 speeds. T1 requires
two lines and E1 requires three. Compare ADSL, SDSL.
The portion of a packet, preceding the actual data, containing
source and destination addresses and error-checking fields.
Glossary
5
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