Configuring A Dns Client; Establishing The Configuration Task - Huawei AR150 series Configuration Manual

Huawei AR150&200 Series Enterprise Routers
Configuration Guide - IP Service

4.3 Configuring a DNS Client

A DNS client uses domain names to communicate with other devices.

4.3.1 Establishing the Configuration Task

Before configuring a DNS client, familiarize yourself with the applicable environment, complete
the pre-configuration tasks, and obtain the data required for the configuration. This will help
you complete the configuration task quickly and accurately.
Applicable Environment
IP addresses such as 202.112.131.109 are difficult to remember; therefore, most organizations
use abbreviations or meaningful names (also called domain names) such as www.sina.com.cn
to identify devices. Name resolvers or domain servers resolve mappings between IP addresses
and domain names.
A DNS client provides functions of a name resolver and completes resolution between IP
addresses and domain names.
If your organization seldom uses domain names to access other devices or there are no available
DNS servers, you must configure static DNS entries. To configure static DNS entries, you must
know mappings between domain names and IP addresses. When mappings between domain
names and IP addresses change, you must manually modify DNS entries.
If your organization uses domain names to access many devices and DNS servers are available,
you can configure dynamic DNS entries.
Pre-configuration Tasks
Before configuring a DNS client, complete the following tasks:
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Data Preparation
To configure a DNS client, you need the following data.
No.
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Issue 02 (2012-03-30)
Connecting interfaces and setting physical parameters for the interfaces to ensure that the
physical layer status of the interfaces is Up
Setting link layer protocol parameters for interfaces to ensure that the link layer protocol
status on the interfaces is Up
Configuring a DNS server
Configuring a route between the local routing device and the DNS server
Data
Domain name and corresponding IP address in a static DNS entry
(Optional) IP address of a DNS server
(Optional) IP address of the local routing device
(Optional) Domain name suffix list
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