Domain Name System (DNS) Services
Configuring DNS
Adding an Entry to the Router's Host Table
DNS distributes the now overwhelmingly vast host table throughout many
name servers. Network administrators maintain entries for their own
domains, which keeps the table accurate and under control. You manage only
the small section of the table on which you are an expert. You should configure
the host table on your ProCurve Secure Router only with entries for hosts on
its own network.
If the router is acting as a Dynamic Host Configuration Protocol (DHCP)
server, the Secure Router OS automatically adds the router's clients to the host
table. If the router is acting as an authoritative server for its own network, you
should also manually add entries for any devices with a static address that
users may need to access such as your organization's Web and email servers.
Do not add entries for external hosts or any other host for which the router
can get information from other servers.
To add a hostname to the table, enter:
Syntax: ip host <hostname> <A.B.C.D>
For example:
ProCurve(config)# ip host www 192.168.1.25
A hostname can be any combination of numbers and letters under 256 char-
acters. However, the hostname cannot constitute a valid IP address. Use the
no form of this command to remove names from the hostname table.
Do not include the domain name for hostnames. Instead, you should specify
your organization's domain name as the default name the router uses to
resolve hostnames. Enter:
Syntax: ip domain-name <domain name>
Do not include the initial period that separates an unresolved name from the
domain name. For example:
ProCurve(config)# ip domain-name procurve.com
If you enable DNS proxy, the router can also use the default domain name
when forwarding requests. If the external name server cannot resolve a query,
the router appends the default domain name to the original query and resends
the request.
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