In addition to authoritative zones, the NIOS appliance allows you to configure delegated, forward, and stub zones. A delegated zone is a zone managed by (delegated to) another name server who owns the authority for the zone. A forward zone is where queries are sent before being forwarded to other remote name servers. A stub zone contains records that identify the authoritative name servers in another zone. This section covers the following topics:

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1. From the Data Management tab, select the DNS tab -> Zones tab.

2. Click the parent zone to open it.
   Grid Manager displays the Records and Subzones tabs of the zone.

3. From the Subzones tab, click the Add icon -> Zone -> Add Delegation.

4. In the Add Delegation wizard, specify the following:

   • Name: This field displays a dot followed by the domain name of the current zone. Enter one or more labels before the dot to specify the domain name of the subzone.

   • DNS View: This field displays only when there is more than one DNS view in the network view. Displays the DNS view of the current zone.

   • Comment: Optionally, enter additional text about the zone.

   • Disable: Click this checkbox to temporarily disable this zone. For information, see Enabling and Disabling Zones. Note that disabling a zone may take a longer time to complete depending on the size of the data.

   • Lock: Click this checkbox to lock the zone so that you can make changes to it, and also prevent others from making conflicting changes. For information, see Locking and Unlocking Zones.

5. Click Next to assign a delegation name server group or define the name servers for the zone. Select one of the following:

   • Use this nameserver group: Select this to assign a delegation NS group for the delegated zone. You can select the delegation NS group from the drop-down list.

   • Use this set of nameservers: Select this to define name servers for the delegated zone. In the Name Servers panel, click the Add icon and specify the following information:

     • Name: Enter the name of a remote name server to which you want the local server to redirect queries for zone data. This is a name server that is authoritative for the delegated zone.

     • Address: Enter the IP address of the delegated server.

   For information about delegation NS group, see Using Delegation Name Server Groups.

6. Save the configuration and click Restart if it appears at the top of the screen, or click Next to define extensible attributes as described in Using Extensible Attributes. or
   Click the Schedule icon at the top of the wizard to schedule this task. In the Schedule Change panel, enter a date, time, and time zone. For information, see Scheduling Tasks.

Configuring a Delegation for a Reverse-Mapping Zone

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1. From the Data Management tab, select the DNS tab -> Zones tab.

2. Click the parent zone to open it.
   Grid Manager displays the Records and Subzones tabs of the zone.

3. From the Subzones tab, click the Add icon -> Zone -> Add Delegation.

4. In the Add Delegation wizard, specify the following:

   • IPv4 Network: This field displays if you are creating a delegation zone for an IPv4 reverse-mapping zone. Enter the IPv4 address for the address space for which you want to define the reverse-mapping zone and select a netmask from the Netmask drop-down list. Alternatively, you can specify the address in CIDR format, such as 192/8.

   • To use an RFC 2317 prefix, select a netmask value that is between 25 to 31, inclusive. Grid Manager displays the following fields:

   • RFC2317 Prefix: Enter a prefix in this field. Prefixes can include alphanumeric characters.

   • Allow manual creation of PTR records in parent zone: Select this checkbox to allow users to create labels that correspond to IP addresses in the delegated address space in the parent zone.

   • For information about RFC 2317, see Specifying an RFC 2317 Prefix.

   • IPv6 Network Prefix: This field displays if you are creating a delegation zone for an IPv6 reverse-mapping zone. Enter the IPv6 prefix for the address space for which you want to define the reverse-mapping zone and select the prefix length from the drop-down list.

   • Name: This field displays a dot followed by the domain name of the current zone. Enter one or more labels before the dot to specify the domain name of the subzone.

   • DNS View: This field displays only when there is more than one DNS view in the network view. Select a DNS view from the drop-down list.

   • Comment: Optionally, enter additional text about the zone.

   • Disable: Select this option to temporarily disable this zone. Note that disabling a zone may take a longer time to complete depending on the size of the data.

   • Lock: Select this option to lock the zone so that you can make changes to it and prevent others from making conflicting changes.

5. Click Next to assign a delegation name server group or define the name servers for the zone. Select one of the following:

   • Use this name server group: Select this to assign a delegation NS group for the delegated zone. You can select the delegation NS group from the drop-down list.

   • Use this set of name servers: Select this to define name servers for the delegated zone. In the Name Servers panel, click the Add icon and specify the following information:

     • Name: Enter the name of a remote name server to which you want the local server to redirect queries for zone data. This is a name server that is authoritative for the delegated zone.

     • Address: Enter the IP address of the delegated server.

   For information about delegation NS groups, see Using Delegation Name Server Groups.

6. Save the configuration and click Restart if it appears at the top of the screen, or click Next to define extensible attributes as described in Using Extensible Attributes. or
   Click the Schedule icon at the top of the wizard to schedule this task. In the Schedule Change panel, enter a date, time, and time zone. For information, see Scheduling Tasks.

Configuring a Forward Zone

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