Configuring a DNS Server

A Microbranch can redirect DNS Domain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. queries to dedicated DNS servers configured for corporate and public domains. You can use this feature to optimize the load on the corporate DNS servers. To optimize, split and redirect the non-corporate traffic to a separate DNS server configured on the Microbranch.

To configure the DNS server details, complete the following steps:

  1. In the Aruba Central app, set the filter to a Microbranch group that contains at least one AP.

    The dashboard context for a group is displayed.

  2. Under Manage, click Devices > Access Points.
  3. Click the Config icon.

    The Microbranch configuration dashboard is displayed.

  4. Click System > DNS & NTP Network Time Protocol. NTP is a protocol for synchronizing the clocks of computers over a network..

    The DNS & NTP page is displayed.

  5. Expand DNS.
  6. Enter the internal domain name of AP in the Domain Name field.

    The length of a domain name can be up to 128 characters. This field is optional.

  7. Select a DNS from the Redirect DNS drop-down. The following options are available:

    If L3 routed/NATed Tunnels is selected, select the DNS Server as Use AP as DNS in LAN Local Area Network. A LAN is a network of connected devices within a distinct geographic area such as an office or a commercial establishment and share a common communications line or wireless link to a server. properties of Microbranch. For more information on configuring DNS server, refer DNS Server

  8. To add a DNS server, click the + icon in the DNS Servers table.
  9. Select a DNS service provider or define a User Defined DNS provider.
    • You can either select one public DNS service provider from the list or add two User Defined Provider DNS servers.

    • You cannot add the same IP address as two user-defined provider DNS servers.

    • Only IPV4 address is supported.

    • APs supports only two IPV4 addresses for the DNS server configuration.

  10. Specify the IPv4 address for the User Defined DNS server in the IP Address field.

    If you have selected the DNS service providers from the list, the IP address will be auto-populated.

  11. To add a domain to redirect, click the + icon in the Domains To Redirect table.

    The Domains To Redirect table is displayed when L2 Tunnels or L3 routed/NATed Tunnels or All is selected from Redirect DNS drop-down list. A maximum of 16 domains can be added.

    1. Enter a domain name in the Domain Name field.

      The length of a domain name can be up to 128 characters.

    2. Enter an IPv4 Address of the domain in the IP Address field.
  12. Click Save.

Configuring an NTP Server

You can also configure the Microbranch to use an NTP server to synchronize its system clock with a central time source. The system automatically updates the time zone including the relevant Daylight Savings Time (DST Daylight Saving Time. DST is also known as summer time that refers to the practice of advancing clocks, so that evenings have more daylight and mornings have less. Typically clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn. ) across time zones. This is done to automatically keep the time up-to-date and precise with DST adjustments.

To configure NTP server and time zone, complete the following steps:

  1. In the Aruba Central app, set the filter to a Microbranch group that contains at least one AP.

    The dashboard context for a group is displayed.

  2. Under Manage, click Devices > Access Points.

  3. Click the Config icon.

    The Microbranch configuration dashboard is displayed.

  4. Click System > DNS & NTP.

    The DNS & NTP page is displayed.

  5. Expand NTP.

  6. Click the + icon in the Public NTP Servers and enter the IPv4 address or the FQDN Fully Qualified Domain Name. FQDN is a complete domain name that identifies a computer or host on the Internet. of the public NTP provider to add the NTP servers to the Microbranch group.

  7. Choose the Timezone from the drop-down list.

    The primary time zones followed by other time zones are listed.

  8. Click Save.