HPE FlexNetwork MSR Series User Manual

182
Configuring DNS
Overview
Domain Name System (DNS) is a distributed database that provides TCP/IP applications with the
mappings between host names and IP addresses. With DNS, you can use easy-to-remember host
names in some applications and let the DNS server translate them into correct IP addresses.
For more information about DNS, see HPE FlexNetwork MSR Router Series Comware 5 Layer 3—IP
Services Configuration Guide.
DNS provides the following functions:
• Dynamic domain name resolution—Implemented by querying the DNS server.
• DNS proxy—Forwards DNS requests and replies between the DNS client and DNS server.
Recommended configuration procedure
Configuring dynamic domain name resolution
Task Remarks
Enabling dynamic domain name resolution
Required.
Enable dynamic domain name resolution.
Disabled by default.
Specifying a DNS server
Required.
Not specified by default.
You can specify up to six DNS servers.
Configuring a domain name suffix
Optional.
A suffix is used when the name to be resolved is incomplete.
The system can supply the missing part. For example, a user
can configure com as the suffix for aabbcc.com. The user only
needs to enter aabbcc to obtain the IP address of aabbcc.com
because the system adds the suffix and delimiter before
passing the name to the DNS server.
Not configured by default.
You can configure up to ten DNS suffixes.
Clearing the dynamic domain name cache
Optional.
Clear the dynamic IPv4 domain name cache.
The DNS client stores latest mappings between domain names
and IP addresses in the dynamic domain name cache. The
DNS client searches the cache for a repeated query rather than
sends a request to the DNS server. The mappings are aged out
from the cache after a certain time. You can also manually clear
the cache.

HPE FlexNetwork MSR Series Specifications

General

Brand	HPE
Model	FlexNetwork MSR Series
Category	Network Router
Language	English