The name of the signed zone file must be included in the name server's configuration file. If you are signing an existing zone, the current zone file in the configuration file must be replaced with the signed zone file. If you are signing a new zone, the new signed zone file must be added.

For the zone whose name is zone-name, do the following:

# vi named.conf [ENTER]

... zone "zone-name." { type master; file "zone-file.signed"; }; ...