Domains And Subdomains - Novell NETWARE 6-DOCUMENTATION Manual

Domains and Subdomains

A domain is a label of the DNS tree. Each node on the DNS tree represents a
domain. Domains under the top-level domains represent individual
organizations or entities. These domains can be further divided into
subdomains to ease administration of an organization's host computers.
For example, Company A creates a domain called companya.com under the
.com top-level domain . Company A has separate LANs for its locations in
Chicago, Washington, and Providence. Therefore, the network administrator
for Company A decides to create a separate subdomain for each division, as
shown in Figure 4, "Domains and Subdomains," on page 29.
Any domain in a subtree is considered part of all domains above it. Therefore,
chicago.companya.com is part of the companya.com domain, and both are
part of the .com domain.
Figure 4 Domains and Subdomains
root
" • "
com
Company A
(companya.com)
chicago providence
(chicago.companya.com) (providence.companya.com)
washington
(washington.companya.com)
host1
(host1.washington.companya.com)
29
Understanding