Configuring Dns; Overview; Recommended Configuration Procedure; Configuring Dynamic Domain Name Resolution - HP MSR SERIES Configuration Manual

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Configuring DNS

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 Layer 3—IP Services Configuration Guide in HP MSR Router Series

Configuration Guides (V5).

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.

Enabling dynamic domain name resolution

Specifying a DNS server

Configuring a domain name suffix

Clearing the dynamic domain name cache

Enable dynamic domain name resolution.

Disabled by default.

Not specified by default.

You can specify up to six DNS servers.

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.

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

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