--- title: "Using Name Server Groups" canonical: "https://docs.infoblox.com/space/nios85/35784971/Using%20Name%20Server%20Groups" format: markdown --- NS (name server) group is a collection of one or more DNS servers. Grouping a commonly used set of DNS servers together simplifies zone creation by enabling you to specify a single NS group instead of specifying multiple name servers individually. You can configure the following types of NS groups: - Authoritative NS Group–For information, see *[Using](#UsingNameServerGroups-bookmark1825)*[ ](#UsingNameServerGroups-bookmark1825)*[Authoritative](#UsingNameServerGroups-bookmark1825)*[ ](#UsingNameServerGroups-bookmark1825)*[Name](#UsingNameServerGroups-bookmark1825)*[ ](#UsingNameServerGroups-bookmark1825)*[Server](#UsingNameServerGroups-bookmark1825)*[ ](#UsingNameServerGroups-bookmark1825)*[Groups](#UsingNameServerGroups-bookmark1825)*. - Delegation NS Group–For information, see *[Using](#UsingNameServerGroups-bookmark1831)*[ ](#UsingNameServerGroups-bookmark1831)*[Delegation](#UsingNameServerGroups-bookmark1831)*[ ](#UsingNameServerGroups-bookmark1831)*[Name](#UsingNameServerGroups-bookmark1831)*[ ](#UsingNameServerGroups-bookmark1831)*[Server](#UsingNameServerGroups-bookmark1831)*[ ](#UsingNameServerGroups-bookmark1831)*[Groups](#UsingNameServerGroups-bookmark1831)*[.](#UsingNameServerGroups-bookmark1831) - Forwarding Member NS Group–For information, see *[Using](#UsingNameServerGroups-bookmark1832)*[ ](#UsingNameServerGroups-bookmark1832)*[Forwarding](#UsingNameServerGroups-bookmark1832)*[ ](#UsingNameServerGroups-bookmark1832)*[Member](#UsingNameServerGroups-bookmark1832)*[ ](#UsingNameServerGroups-bookmark1832)*[Name](#UsingNameServerGroups-bookmark1832)*[ ](#UsingNameServerGroups-bookmark1832)*[Server](#UsingNameServerGroups-bookmark1832)*[ ](#UsingNameServerGroups-bookmark1832)*[Groups](#UsingNameServerGroups-bookmark1832)*. - Stub Member NS Group–For information, see *[Using](#UsingNameServerGroups-bookmark1833)*[ ](#UsingNameServerGroups-bookmark1833)*[Stub](#UsingNameServerGroups-bookmark1833)*[ ](#UsingNameServerGroups-bookmark1833)*[Member](#UsingNameServerGroups-bookmark1833)*[ ](#UsingNameServerGroups-bookmark1833)*[Name](#UsingNameServerGroups-bookmark1833)*[ ](#UsingNameServerGroups-bookmark1833)*[Server](#UsingNameServerGroups-bookmark1833)*[ ](#UsingNameServerGroups-bookmark1833)*[Groups](#UsingNameServerGroups-bookmark1833)*. - Forward/Stub Server NS Group–For information, see *[Using](#UsingNameServerGroups-bookmark1834)*[ ](#UsingNameServerGroups-bookmark1834)*[Forward/Stub](#UsingNameServerGroups-bookmark1834)*[ ](#UsingNameServerGroups-bookmark1834)*[Server](#UsingNameServerGroups-bookmark1834)*[ ](#UsingNameServerGroups-bookmark1834)*[Name](#UsingNameServerGroups-bookmark1834)*[ ](#UsingNameServerGroups-bookmark1834)*[Server](#UsingNameServerGroups-bookmark1834)*[ ](#UsingNameServerGroups-bookmark1834)*[Groups](#UsingNameServerGroups-bookmark1834)*. # > Macro (anchor) > Macro (anchor) Using Authoritative Name Server Group> Macro (anchor) s An authoritative NS> Macro (anchor) (name server) group is a collection of one or more primary DNS servers and secondary DNS servers. After you create an authoritative NS group, you can then assign it to serve authoritative forward-mapping and reverse-mapping zones. When you assign an authoritative NS group to an authoritative zone, Grid Manager automatically generates an NS record, a glue A or AAAA record, and a PTR record for each name server available in the NS group. But if the zone is disabled, Grid Manager does not generate these records. Grid Manager generates authoritative A, AAAA, and PTR records when: - A Grid member is added to a Grid, whose host name belongs to the name space of the authoritative zone and vice versa. - An external name server is assigned to a zone, whose host name belongs to the name space of the authoritative zone. The performance of the following functions significantly improve when you assign an NS group to a zone instead of specifying multiple name servers individually: - Starting and Stopping the DNS service. - Reparenting the zones after removing or restoring a zone. - Modifying the zone data. > ⚠️ **Note** > ⚠️ > ⚠️ Only superusers can create and manage name server groups > Macro (anchor) ## Adding Authoritative Name Server Groups To add an authoritative name server group: 1. From the **Data** **Management** -> **DNS** tab, do one of the following: - Click the **Name** **Server** **Groups** tab -> Add icon -> **Group** -> **Authoritative**. - From the Toolbar, click the Add icon -> **Group** -> **Authoritative.** 2. In the *Add* *Name* *Server* *Group* wizard, do the following: - **Name:** Type a name that provides a meaningful reference for this set of servers. - **Name**** Servers:** Click the Add icon and select one of the following options for every server that you are adding to the NS group: - **Grid**** Primary:** Choose this option to select a primary name server or multiple primary servers for the zone. See *[Specifying](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1764)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1764)*[Grid](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1764)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1764)*[Primary](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1764)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1764)*[Servers](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1764)*. - **Grid**** Secondary:** Choose this option to select a Grid member as a secondary server for the zone. See *[Adding](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1773)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1773)*[Grid](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1773)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1773)*[Secondaries](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1773)*. - **External**** Primary:** Choose this option if the appliance is in a Grid and you want to specify a primary server outside the Grid ("external" to the Grid). See *[Specifying](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1769)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1769)*[External](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1769)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1769)*[Primary](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1769)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1769)*[Servers](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1769)*. - **External**** Secondary**: Choose this option if the appliance is in a Grid and you want to specify a secondary server outside the Grid ("external" to the Grid), or if the appliance is deployed independently from a Grid. See *[Specifying](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1775)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1775)*[External](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1775)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1775)*[Secondaries](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752570/Assigning+Zone+Authority+to+Name+Servers#AssigningZoneAuthoritytoNameServers-bookmark1775)*. - **Default** **NS** **Group:** Select this to specify this authoritative name server group as the default. - **Comment:** Optionally, enter additional information about the authoritative NS group. 3. Save the configuration and click **Restart** if it appears at the top of the screen, or click **Next** to define extensible attributes. For information, see *[Using](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[Extensible](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[Attributes](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[.](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868) A newly created authoritative name server group appears in the **Name** **Server** **Groups** tab. For information about viewing the name server groups, see *[Viewing](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Name](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Server](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Groups](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*. You can then associate it with forward-mapping and reverse-mapping authoritative zones. ## Applying Authoritative Name Server Group> Macro (anchor) s In Grid Manager, you can assign an authoritative name server group to an authoritative zone when you first create it using the *Add* *Authoritative* *Zone* wizard and when you edit an existing authoritative zone using the *Authoritative* *Zone* editor. For information on creating an authoritative zone using the wizard, see *[Configuring](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35817329)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35817329)*[Authoritative](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35817329)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35817329)*[Zones](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35817329)*. The panels used to assign a name server group to a zone are the same in the wizard or and editor. The only difference is the way you access it. The following procedure describes how to specify an authoritative NS group when editing a forward-mapping zone: 1. From the **Data** **Management** tab -> **DNS** tab -> **Zones** tab -> *zone* checkbox, and then click the Edit icon. 2. In the *Authoritative* *Zone* editor, click **Name** **Servers**. 3. Select **Use** **this** **name** **server** **group**, and then select the authoritative NS group from the drop-down list. # > Macro (anchor) > Macro (anchor) Using Delegation Name Server Groups Delegation NS (Name Server) group is a collection of external name servers for delegated zones. Adding a set of external name servers to a single delegation NS group can significantly reduce configuration efforts. While configuring delegated zones, you can specify a single delegation NS group instead of configuring multiple name servers individually. After you create a delegation NS group, you can then assign it to serve only delegated zones. When you assign a delegation NS group to a delegated zone, Grid Manager automatically generates an NS record, a glue A or AAAA record, and a PTR record for each name server available in the delegation NS group. But if the zone is disabled, Grid Manager does not generate these records. Note the following while adding a delegation NS group: - You cannot add a delegation NS group if a NS group with the same name already exists and vice versa. - If a Grid has any Microsoft servers configured, delegation NS groups are not allowed and vice versa. - You cannot delete a delegation NS group if it is assigned to a zone. - The DNS server resolves the FQDN of the delegated name server and does not use the IP address that you specify when assigning the delegated name servers. ## Adding Delegation Name Server Groups To add a delegation name server group: 1. From the **Data** **Management** -> **DNS** tab, do one of the following: - Click the **Name** **Server** **Groups** tab -> Add icon -> **Delegation**. - From the Toolbar, click the Add icon -> **Group** -> **Delegation**. 2. In the *Add* *Delegation* *Name* *Server* *Group* wizard, complete the following: - **Name:** Enter the name of the delegation NS group. - **Comment:** Optionally, enter additional information about the delegation NS group. 3. Click **Next** to define the external name servers for the delegation NS group. 4. In the *Name* *Server* panel, click the Add icon and specify the following for every server that you are adding to the delegation NS group: - **Name:** Enter the name of the delegated name server. - **Address:** Enter the IP address of the delegated name server. 5. Save the configuration and click **Restart** if it appears at the top of the screen, or click **Next** to define extensible attributes. For information, see *[Using](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[Extensible](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[Attributes](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*. A newly created delegation NS group appears in the **Name** **Server** **Groups** tab. For information about viewing the name server groups, see *[Viewing](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Name](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Server](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Groups](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*. You can then associate it with delegated zones. ## Applying Delegation Name Server Groups You can assign a delegation NS group to a delegated zone when you first create it using the *Add* *Delegation* wizard and when you edit an existing delegated zone using the *Delegation* *Zone* editor. For information about creating a delegated zone using the wizard, see *[Configuring](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1803)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1803)*[a](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1803)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1803)*[Delegation](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1803)*. Complete the following to assign a delegation NS group to a delegation zone: 1. From the **Data** **Management** tab -> **DNS** tab -> **Zones** tab -> *delegation* *zone* checkbox, and then click the Edit icon. 2. In the *Delegation* *Zone* editor, click **Delegated** **Name** **Servers**. 3. Select **Use** **this** **name** **server** **group**, and then select the delegation NS group from the drop-down list. # > Macro (anchor) > Macro (anchor) Using Forwarding Member Name Server Groups A forwarding member NS (Name Server) group is a collection of one or more forwarding name servers. Grouping a set of forwarding name servers together reduces the configuration efforts. When you configure a forwarding zone, you can specify a single forwarding member NS group instead of specifying multiple forwarding name servers individually. After you create a forwarding member NS group, you can assign it to a forward forward-mapping zone and a forward reverse-mapping zone. Note the following while adding a forwarding member NS group: - Only superusers can add, modify, and delete a forwarding member NS group. - You cannot add a forwarding member NS group if a NS group with the same name already exists and vice versa. - You cannot delete a forwarding member NS group if it is assigned to a zone. ## Adding Forwarding Member Name Server Groups To add a forwarding member NS group: > Macro (legacy-content) A newly created forwarding member NS group appears in the **Name** **Server** **Groups** tab. For information about viewing the name server groups, see *[Viewing](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Name](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Server](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Groups](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*. You can then associate it with forward forward-mapping zones and forward reverse-mapping zones. ## Applying Forwarding Member Name Server Groups You can assign a forwarding member NS group to a forward zone when you first create it using the *Add* *Forward* *Zone* wizard and when you edit an existing forward zone using the *Forward* *Zone* editor. For information about creating a forward zone using the wizard, see *[Configuring](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[a](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[Forward](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[Zone](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*. Complete the following to assign a forwarding member NS group to a forward zone: 1. From the **Data** **Management** tab -> **DNS** tab -> **Zones** tab -> *forward* *zone* checkbox, and then click the Edit icon. 2. In the *Forward* *Zone* editor, click **Name** **Servers**. 3. Select **Use** **this** **name** **server** **group**, and then select the forwarding member NS group from the drop-down list. # > Macro (anchor) > Macro (anchor) Using Stub Member Name Server Groups A stub member NS (Name Server) Group is a collection of one or more Grid members for stub zones. When you configure a stub zone, you can specify a single stub member NS group instead of specifying multiple Grid members individually, thus reducing the configuration efforts. After you create a stub member NS group, you can assign it to forward-mapping stub zones and reverse-mapping stub zones. Note the following while adding a stub member NS group: - Only superusers can add, modify, and delete a stub member NS group. - You cannot add a stub member NS group if a NS group with the same name already exists and vice versa. - You cannot delete a stub member NS group if it is assigned to a zone. ## Adding Stub Member Name Server Groups To add a stub member NS group: 1. From the **Data** **Management** -> **DNS** tab, do one of the following: - Click the **Name** **Server** **Groups** tab -> Add icon -> **Stub** **Member**. - From the Toolbar, click the Add icon -> **Group** -> **Stub** **Member**. 2. In the *Stub* *Member* *Name* *Server* *Group* wizard, complete the following: - **Name:** Enter the name of the stub member NS group. - **Name**** Servers:** In this section, you can add the Grid members to the stub member NS group. Click the Add icon and select a Grid member from the *Member**Selector* dialog box. The following is displayed in the table for each member: - **Name:** The name of the Grid member. - **IPv4 ****Address:** The IPv4 address of the Grid member. - **IPv6 ****Address:** The IPv6 address of the Grid member. - **Comment:** Optionally, enter additional information about the stub member NS group. 3. Save the configuration or click **Next** to define extensible attributes. For information, see *[Using](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[Extensible](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)* *[Attributes](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*. A newly created stub member NS group appears in the **Name** **Server** **Groups** tab. For information about viewing the name server groups, see *[Viewing](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Name](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Server](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Groups](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*. You can then associate it with stub forward-mapping zones and stub reverse-mapping zones. ## Applying Stub Member Name Server Groups You can assign a stub member NS group to a stub zone when you first create it using the *Add* *Stub* *Zone* wizard and when you edit an existing stub zone using the *Stub* *Zone* editor. For information about creating a stub zone using the wizard, see *[Configuring](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*[Stub](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*[Zones](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*. Complete the following to assign a stub member NS group to a stub zone: 1. From the **Data** **Management** tab -> **DNS** tab -> **Zones** tab -> *stub* *zone* checkbox, and then click the Edit icon. 2. In the *Stub* *Zone* editor, click **Name** **Servers**. 3. Select **Use** **this** **name** **server** **group**, and then select the stub member NS group from the drop-down list. # > Macro (anchor) > Macro (anchor) Using Forward/Stub Server Name Server Groups A forward/stub server NS (Name Server) group is a collection of one or more external name servers. Grouping a set of external name servers together to a forward/stub server NS group reduces the configuration efforts. You can assign a single forward/stub server NS group as default forwarders for a forward zone or as primary servers for a stub zone instead of specifying multiple name servers individually. Note the following while adding a forward/stub server NS group: - Only super-users can add, modify, and delete a forward/stub server NS group. - You cannot add a forward/stub server NS group if a NS group with the same name already exists and vice versa. - You cannot delete a forward/stub server NS group if it is assigned to a zone. ## Adding Forward/Stub Server Name Server Groups To add a forward/stub server NS group: 1. From the **Data** **Management** -> **DNS** tab, do one of the following: - Click the **Name** **Server** **Groups** tab -> Add icon -> **Forward/Stub** **Server**. - From the Toolbar, click the Add icon -> **Group** -> **Forward/Stub** **Server**. 2. In the *Forward/Stub* *Server* *Name* *Server* *Group* wizard, complete the following: - **Name**: Enter a name that provides a meaningful reference for this set of external name servers for the forward and stub zones. - **Name** **Servers**: Click the Add icon and specify the following for every external name server that you are adding to the forward/stub server NS group: - **Name**: The name of the external name server. - **IP** **Address**: The IP address of the external name server. - **Comment**: Optionally, enter additional information about the forward/stub server NS group. 3. Save the configuration or click **Next** to define extensible attributes. For information, see *[Using](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*[Extensible](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)* *[Attributes](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)*. A newly created forward/stub server NS group appears in the **Name** **Server** **Groups** tab. For information about viewing the name server groups, see *[Viewing](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Name](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Server](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*[Groups](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35752551)*. You can then associate it with forward zones as default forwarders and as primary servers for stub zones. ## Applying Forward/Stub Server Name Server Groups You can assign a forward/stub server NS group to a forward zone as default forwarders and as primary servers to a stub zone when you first create it and when you edit an existing forward zone and stub zone. For information about creating a forward zone using the wizard, see *[Configuring](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[a](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[Forward](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*[Zone](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1806)*. For information about creating a stub zone using the wizard, see *[Configuring](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*[Stub](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*[Zones](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35816086/Configuring+Delegated+Forward+and+Stub+Zones#ConfiguringDelegated,Forward,andStubZones-bookmark1809)*. Complete the following to assign a forward/stub server NS group to a forward zone: 1. From the **Data** **Management** tab -> **DNS** tab -> **Zones** tab -> *forward* *zone* checkbox, and then click the Edit icon. 2. In the *Forward* *Zone* editor, click **Forwarders**. 3. Select **Use** **this** **name** **server** **group**, and then select the forward/stub server NS group from the drop-down list. Complete the following to assign a forward/stub server NS group to a stub zone: 4. From the **Data** **Management** tab -> **DNS** tab -> **Zones** tab -> *stub* *zone* checkbox, and then click the Edit icon. 5. In the *Stub* *Zone* editor, click **Masters**. 6. Select **Use** **this** **name** **server** **group**, and then select the forward/stub server NS group from the drop-down list.