Guidelines for configuring network interfaces P1 and P2

IP address (P1 or P2 interface)

Required.
Subnet mask Required.
Default gateway

Optional.

The gateway must be in the same subnet as the IP address of the interface (P1 or P2) used for communicating with the Internet (outbound traffic).

Ensure that outbound packets can reach the Internet.

Primary DNS

Required.

IP address of the domain name system.

Secondary DNS

Optional.

Serves as a backup in case the primary DNS server is unavailable.

Tertiary DNS

Optional.

Serves as a backup in case the primary and secondary DNS servers are unavailable.

CLI example:
(config)# set interface ipv4 --interface p1
          --ip 10.200.200.20 --mask 255.255.0.0
          --gateway 10.200.0.5
(config)# set interface dns --module proxy
          --dns1 10.10.10.10 --dns2 10.10.10.11