In this section:
Overview
The SBC Edge can be configured to use a Primary DNS Server, a Secondary DNS Server, and a Domain Specific DNS Server (Split-DNS) to resolve FQDNs.
The Primary and Secondary DNS servers are configured in the Node Level Settings. For more information, see Configuring Host Information and DNS.
A Domain Specific DNS Server is configured through the Split-DNS settings. The following section describes how to configure the Split-DNS.
The Split-DNS can also be configured using DHCP on the Logical Interface. For more information, see Configuring and Modifying Logical Interfaces .
Configuring Split-DNS
To create a Split-DNS entry:
- In the WebUI, click the Settings tab.
In the left navigation page, go to Protocols > DNS > Split-DNS. An IPv4 example is shown below; the DNS Server IP can be configured with IPv4 or IPv6.
Click the Create Split DNS List Entry () icon at the top of the Split DNS page.
- Enter the following information.
- In DNS Server IP, enter the IP address for the specific domain (IPv4 or IPv6).
In Domain Name, enter the domain name for the specific domain.
- In DNS Server IP, enter the IP address for the specific domain (IPv4 or IPv6).
Click OK.
The entry now appears in the Split DNS table.
Create Split-DNS Entry - Field Definitions
DNS Server IP
A DNS server may be associated with many domain names. One entry should be configured for each DNS server and domain combination.
When a domain-specific DNS server fails, it fails over to the next domain-specific DNS server associated with that domain. Global DNS servers are not used for a domain, even if all of the configured domain-specific DNS servers fail.
Domain Name
One entry should be configured for each domain and DNS server combination.