Coyote Point Systems E350GX, Installation And Administration Manual

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Appendix J: Glossary
322 Equalizer Installation and Administration Guide
Class A An ISO/IEC 11801 standard for twisted pair cabling rated to 100 KHz; similar
to Category 1 cabling. Use the Class A standard for voice and low frequency
applications. According to the Microsoft Press Computer Dictionary , you can
use Class A networks “for sites with few networks but numerous hosts.” See
ISO/IEC.
Class B An ISO/IEC 11801 standard for twisted pair cabling rated to 1 MHz; similar to
Category 2 cabling. Use the Class B standard for medium bit rate
applications. See ISO/IEC.
Class C An ISO/IEC 11801 standard for twisted pair cabling rated to 16 MHz; similar to
TIA/EIA Category 3 cabling. Use the Class C standard for high bit rate
applications, in which the network allocates 24 bits for the IP address
network-address field. A Class C network allocates 24 bits for the IP address
network-address field and 8 bits for the host field. See ISO/IEC.
cluster A set of networked computer systems that work together as one system. See
server cluster and virtual cluster.
cluster address The IP address assigned to a particular cluster configured on Equalizer.
computed load A measure of the performance of a server relative to the overall performance
of the cluster of which the server is a part.
cookie Data that a Web server stores on a client on behalf of a Web site. When a
user returns to the Web site, the server reads the cookie data on the client,
providing the Web site all the saved information about the user.
connection A connection is a Layer 4 transmission path established between two
endpoints. Clients open connections to Equalizer cluster IPs, and Equalizer
opens connections to the servers behind it. The notion of a connection is
supplied by the underlying protocol. There are connection-oriented protocols,
like TCP and connectionless protocols, such as UDP.
daemon An application that runs in the background and performs one or more actions
when events trigger those actions.
DNS Domain Name System or Domain Name Service; used to map domain names
to Internet servers in order to link to IP addresses or map IP addresses to
domain names. See IP address.
DNS TTL The amount of time, in seconds, that a name server is allowed to cache the
domain information. See DNS and TTL.
domain The highest level in an IP address and the last part of the address in the URL.
The domain identifies the category under which the Web site operates. For
example, in
www.coyotepoint.com
,
com
is the domain, where
com
represents a commercial site. See domain name, IP address, and subdomain.
See also DNS.
domain name The owner of an IP address. The next highest level in an IP address and the
next-to-last part of the address. For example, in
www.coyotepoint.com
,
coyotepoint
is the domain name. See domain, IP address, and subdomain.
See also DNS.
dynamic weight The weight that Equalizer assigns to a particular server during operation. See
server weight, initial weight, and weight.
echo The transmittal of data that has been sent successfully back to the originating
computer. See ping. See also CMP echo request.
endpoint An IP address-port pair that identifies the start or end of an address; a value
that ends a process.