Enterasys Networks Fast Network 10 manual Time it takes for a signal to travel across a network

Appendix B: Glossary

packet

A group of bits including data and control elements arranged in a specific format that are transmitted and switched as a composite whole. Control elements include a source address, destination address, frame control and status indicators, and a Frame Check Sequence (FCS).

PDU (protocol data unit)

The portion of a datagram that contains the data associated with a particular protocol.

peer-to-peer

Term used to describe data transmission between entities in the same sublayer of the OSI model.

physical layer

Layer 1 of the OSI model. Defines and handles the electrical and physical connections between systems.

power budget

The difference between transmit power and receiver sensitivity, including any safety margins.

PPP (point-to-point protocol)

A protocol for transmitting datagrams (IP or MAC packets) over a serial point-to-point link (e.g., the out-of-band management port).

pps (packets per second)

Unit of measure used to express packet data throughput. 18 pps is approximately equal to 9600 bps.

propagation delay

The time it takes for a signal to travel across a network.

protocol

A set of rules used by computers and related devices to communicate with each other.

protocol suite

A group of protocols related to a common framework.

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