IP Redundancy Admin Status – Whether you want IP Redundancy to be currently active, allowing this device to serve as a backup if the current main device fails.

Inactive ARP Time Out – How many seconds can pass between ARP requests concerning an entry in the ARP table. After this period, the entry is deleted from the table.

ARP Proxy – Whether the device responds to ARP requests for nodes located on a different direct sub-net. The device responds with its own MAC address. When ARP Proxy is disabled, the device responds only to ARP requests for its own IP addresses.

ICMP Error Messages – Whether ICMP error messages are generated.