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11
Overview
DNS Client Support
Overview
User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Configuring DNS Client
This chapter provides an overview of the Domain Naming System (DNS)
Client support and procedures for configuring DNS client support on the
Avaya Multiservice switch:
DNS Client Support
DNS Client on the Avaya Multiservice Switch
Configuring the DNS Client
DNS is a distributed database of name servers which supply name-to-
address translations for DNS clients. The DNS servers collectively direct
DNS Clients to the DNS Server responsible for a Name to Address
mapping; and that Server provides the specific mapping being requested.
There are three types of DNS servers:
The root name server — Located at the top of the DNS database
tree. It contains pointers to the master name servers for each of the
top-level domains. The root name servers handle the domains such
as .COM, .EDU, .GOV, etc.
The master name server — Located in the middle of the DNS
database tree. It contains pointers to the individual name servers for
each of the subdomains within its top-level domain.
The individual name server — Located at the bottom of the DNS
database tree. It contains detailed address information for the local
hosts in the subdomain.
11-1
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