Configure DNS

You need to specify a DNS server if the chassis requires resolution of hostnames to IP addresses. These chassis DNS settings are separate from the DNS settings per instance, which are configured in the device platform settings.

When you configure multiple DNS servers, the chassis uses servers in a random order. You can configure up to four servers across four DNS server groups. For example, you can configure a single server group with four servers, or you can configure four server groups with one server each.

Procedure

Step 1

Choose Devices > Platform Settings and create or edit the chassis policy.

Step 2

Choose DNS.

DNS
The diagram illustrates the configuration of multiple DNS servers, showing how the chassis utilizes servers in a random order and the options for organizing them into server groups.

Step 3

Enable the Enable DNS name resolution by device slider.

Step 4

Click Add to add a DNS server group.

Add DNS server group
The diagram illustrates the process of adding a DNS server group, highlighting the necessary steps and configuration options within the DNS management interface.

Step 5

Either select an existing DNS server group (refer to Create a DNS server group object), or click (add icon) New Group.

If you add a new group, you see this dialog box. Provide a name and up to four DNS server IP addresses as comma-separated values, and click Add.

New DNS server group object
The dialog box for creating a new DNS server group allows users to enter a name and up to four DNS server IP addresses as comma-separated values.

Step 6

Click Save to add the DNS server to the list.

Step 7

Repeat these steps to add additional server groups.

Make sure you only identify a maximum of four DNS servers in all groups combined.

Step 8

Click Save to save all policy changes.