Overview

A floating static unicast route is a low priority route that has a greater Administrative Distance than other dynamic or static routes.

The following sections are covered:

• Configuration
• Related information
  

Applies to the following Sophos products and versions
Sophos Firewall

Configuration

You must be logged in to the Admin Console as an administrator with Read-Write permissions for the relevant feature(s).

1. Go to Routing > Static Routing. Under the IPv4 Unicast Route section, click Add to add a new unicast route.
2. Specify the Destination IP / Netmask, Gateway, Interface, and Distance through which routing will be done. Specify the Distance as greater than that of the other routes. Here, we have set the Distance to 255 (the maximum value allowed).
3. Click Save to save the configuration.

Note:

• A floating static route will only take effect when the IP address of an interface is removed or changed to a different network IP.
• The metric is useful in cases where the IP addresses are obtained dynamically (DHCP or PPPoE).
• In the following scenario, there are two static routes. One is a floating static route. Both interfaces are not configured with DHCP or PPPoE and in this case, the floating static route will not work as expected.
  
  
  
  
  Routing table with both the interfaces connected.
  
  
  The interface (eth4) where the higher priority static route is pointed to is then unplugged.
  
  
  
  The following routing table shows that the interface was not changed from eth4 to eth5.
  

Related information

• Sophos XG Firewall: How to configure multicast routing