Twin WAN Series – User Guide | v1
Chapter 7 – DNS Configuration
This chapter applies to the XC-DPG602 & XC-DPG603 Twin WAN Gateway models
only.
Section 1: Overview
What is a domain name?
A domain name is a unique name that identifies a server on the Internet. A domain name
typically consists of two or more parts usually separated by dots. In the example of,
www.xincom.com, the given root name of
xincom
denotes the second level domain.
Second level domain names are registered by a consumer/business through a Top Level
Domain (TLD) registry such as Internic.com. The suffix behind the root name, .com in
this example, is a Top Level Domain in the Domain Name System. This denotes the
highest level of the hierarchy after the root name of
xincom
. Both the second and top
level domains create the unique domain name xincom.com.
Authoritative Domain Name Server
Every Web, FTP or Email server requires an Authoritative Domain Name Server to route
the domain name to the respective IP address or multiple IP addresses. Using the XC-
DPG602 or 603 as an authoritative DNS gives the network administrator the ability to
easily create and manage extra domain names. This provides a web site with expanded
bandwidth and redundancy via auto failover in case a single Internet connection fails.
Load Balancing by DNS
The DNS Configuration is a major part of the XC-DPG602 & 603. By acting as an
authoritative name server, it is able to serve the incoming requests on UDP port 53 (DNS
port) and provide the IP address of the web server. The XC-DPG602 & 603 manipulates
the last step based on a few factors such as current bandwidth, load balance type and load
share percentage (Advanced Port => Load Balance menu).
When a request comes in to your domain name, the XC-DPG602 & 603 looks at these
factors to determine which WAN port should be used to access the server. When the
traffic load is higher on WAN 1, the XC-DPG602 & 603 will reply with the IP address of
WAN2, in which case the user will connect to WAN 2 allowing for the best latency and
speed. The 602 & 603 is capable of handling up to 10 domain names in such manner,
giving you the ability to provide hosting services with automatic fail-over and load
balancing
NOTE: Check your Internet Service Provider service agreement before hosting any
content on your connections.
Copyright © 2005 WINS International, LLC dba XiNCOM | All rights reserved.
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