Dell 3-DNS Administrator's Manual page 147

3-DNS Distributed Traffic Controller
3-DNS Maintenance menu
3-DNS web server
A record
access control list (ACL)
active unit
alternate method
big3d agent
BIND (Berkeley Internet Name Domain)
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3-DNS Administrator Guide
The 3-DNS Distributed Traffic Controller is a wide area load distribution
solution that intelligently allocates Internet and intranet service requests
across geographically distributed network servers. The 3-DNS Distributed
Traffic Controller is also most often referred to as the 3-DNS Controller.
The 3-DNS Maintenance menu is a command line utility that you use to
configure the 3-DNS Controller.
The 3-DNS web server is a standard web server that hosts the Configuration
utility on the 3-DNS Controller.
The A record is the ADDRESS resource record that a 3-DNS Controller
returns to a local DNS server in response to a name resolution request. The
A record contains a variety of information, including one or more IP
addresses that resolve to the requested domain name.
An access control list is a list of local DNS server IP addresses that are
excluded from path probing or hops queries.
In a redundant system, an active unit is a 3-DNS Controller that currently
load balances name resolution requests. If the active unit in the redundant
system fails, the standby unit assumes control and begins to load balance
requests.
The alternate method specifies the load balancing mode that the 3-DNS
Controller uses to pick a virtual server if the preferred method fails. See also
fallback method, preferred method.
The big3d agent is a monitoring agent that collects metrics information
about server performance and network paths between a data center and a
specific local DNS server. The 3-DNS Controller uses the information
collected by the big3d agent for dynamic load balancing.
BIND is the most common implementation of the Domain Name System
(DNS). BIND provides a system for matching domain names to IP
addresses. For more information, refer to
http://www.isc.org/products/BIND.
Glossary
Glossary-1