Coyote Point Systems E350GX, Installation And Administration Manual

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Equalizer Installation and Administration Guide 325
ISO/OSI model
International Organization for Standardization/Open Systems
Interconnection model, a standard that consists of seven layers that
control how computers communicate with other computers over a
network.
• Layer 1, Physical, which sets the rules for physical connections
via hardware, is the lowest layer.
• Layer 2, Data-link, uses Layer 1 and its own rules to control
coding, addressing, and transmitting information.
• Layer 3, Network, uses the prior two layers rules as well as its
own rules to control transport routes, message handling, and
message transfers.
• Layer 4, Transport, uses its rules and those of the previous layers
to control accuracy of message delivery and service.
• Layer 5, Session, uses its rules and those of the previous layers
to establish, maintain, and coordinate communication.
• Layer 6, Presentation, uses its rules and those of the previous
layers to control text formatting and appearance as well as
conversion of code.
• Layer 7, Application, uses its rules and those of the other layers
to control transmission of information from one application to
another. Layer 7 is the highest layer.
See Layer 4, Layer 7, and transport layer.
L4 See Layer 4.
L7 See Layer 7.
LAN See Local Area Network .
latency The time over which a signal travels over a network, from the starting point to
the endpoint. See ping. See also CMP echo request and echo.
Layer 4 (L4) The transport layer; Layer 4 uses its rules and those of the previous three
layers to control accuracy of message delivery and service.which controls
accuracy of message delivery and service. See ISO/OSI model and Layer 7.
Layer 7 (L7) The application layer; Layer 7 uses its rules and those of the other layers to
control transmission of information from one application to another. Layer 7 is
the highest layer in the ISO/OSI model. See ISO/OSI model and Layer 4.
link aggregation
load A job that can be processed or transported once. See load balancing. See
also geographic load balancing and intelligent load balancing.
load balancing Moving a load from a highly-used resource to a resource that is used less
often so that operations are efficient. Equalizer balances loads over a wide
physical area or by using algorithms that assess options and real-time
information. See geographic load balancing and intelligent load balancing.
Local Area Network (LAN)
MX exchanger Mail exchanger; a fully qualified domain name to be returned if a server
receives a mail exchanger request.
name server A server that stores information about the domain name space.
NAT Network Address Translation; an Internet standard that defines the process
of converting IP addresses on a local-area network to Internet IP addresses.
See NAT subsystem.