Chapter 4 Glossary
Auto-negotiation:
Auto-negotiation is an Ethernet procedure by which two connected devices choose common
transmission parameters, such as speed, duplex mode, and flow control. In this process, the connected devices
first share their capabilities as for these parameters and then choose the highest performance transmission mode
they both support.
Backpressure:
The build-up of data behind an I/O switch if the buffers are full and incapable of receiving any more
data; the transmitting device halts the sending of data packets until the buffers have been emptied and are once
more capable of storing information.
Flow-control:
Flow control is the process of managing the pacing of data transmission between two nodes to
prevent a fast sender from outrunning a slow receiver. It provides a mechanism for the receiver to control the
transmission speed, so that the receiving node is not overwhelmed with data from transmitting node.
Address Learning:
Address learning is a service that characterizes a learning bridge, in which the source MAC
address of each received packet is stored so that future packets destined for that address can be forwarded only to
the bridge interface on which that address is located.
TCP:
The Transmission Control Protocol (TCP) is one of the core protocols of the Internet Protocol Suite. TCP is one
of the two original components of the suite, complementing the Internet Protocol (IP), and therefore the entire
suite is commonly referred to as TCP/IP. TCP provides reliable, ordered delivery of a stream of bytes from a
program on one computer to another program on another computer.
UDP:
User Datagram Protocol. UDP provides a datagram mode for packet-switched communications. It uses IP as
the underlying transport mechanism to provide access to IP-like services. UDP packets are delivered just like IP
packets – connection-less datagrams that may be discarded before reaching their targets. UDP is useful when TCP
would be too complex, too slow, or just unnecessary.
FTP:
File Transfer Protocol (FTP) is a standard network protocol used to copy a file from one host to another over a
TCP-based network, such as the Internet. FTP is built on client-server architecture and utilizes separate control and
data connections between the client and server.
Http:
The Hypertext Transfer Protocol (HTTP) is a networking protocol for distributed, collaborative, hypermedia
information systems.
TELNET:
Telnet defines a remote communication facility for interfacing to a terminal device over TCP/IP.
ToS:
Type of Service level, which processes the precedence part of the IP packet ToS (3 bits) as an index to the
eight QoS Class values.
Link-Aggregation:
Link aggregation is a term which describes using multiple network cables/ports in parallel to
Summary of Contents for GS-5208P
Page 48: ......
