We've already covered creating and configuring zones; now we will take a brief look at delegating a zone. Delegation is the process of designating a portion of the DNS namespace to another zone. It gives administrators a way of dividing a namespace among multiple zones. For example, an administrator may place the bayside.net domain in one zone and place the sales.bayside.net subdomain in another delegated zone. The bayside.net zone would contain all the records for the sales subdomain if it is not delegated. By delegating, the bayside.net zone only contains information for bayside.net , as well as records to the name servers authoritative for the sales.bayside.net subdomain, but the host entries for any machines in sales.bayside.net are contained only on the delegated server. In any case, when deciding whether to delegate, keep the following points in mind:
Delegating a ZoneBefore you delegate a zone, all the subdomains must first be listed in the current zone. After they've been added, you can use the following procedure to create a zone delegation:
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