Delegating a Subdomain

Within your own domain, you may delegate any number and level of subdomains to distribute control and management responsibility. These subdomains need not be registered with the parent network. The organization that owns a zone or subdomain is responsible for maintaining the data and ensuring that up-to-date data is available from multiple, redundant servers.

Follow these steps to add a subdomain:

Set up the name servers for the subdomain.

Edit the existing zone file, db.domain on the name server for the parent domain, as follows:

Add an NS resource record for each server of the new domain.
Add A records to specify the internet addresses of the name servers listed in the NS records.

Following are some lines from the example file db.nmt. Hosts venus.nmt.edu and moon.nmt.edu are name servers for the nmt.edu domain. Each of these hosts has two connections to the network, so each requires two A records: one for each of its internet addresses.

nmt.edu.             86400    IN     NS    venus.nmt.edu.
 
                     86400    IN     NS    moon.nmt.edu.
 
venus.nmt.edu.       86400    IN     A     123.4.5.678
 
                     86400    IN     A     45.6.7.890
 
moon.nmt.edu         86400    IN     A     67.8.9.10

After modifying the domain data files, issue the following command to restart the name server for the parent domain and force it to reload its databases:
/usr/sbin/sig_named restart

Delegating a Subdomain

Technical documentation

» Table of Contents

» Index