Digi TransPort WR31 User Manual page 369

Configure IP routing and forwarding
Advanced Static Route parameters
Use metric n when the interface is not active
The routing metric to use when the interface is not active.
Use this route only if the source IP address of the packet matches
When enabled, the following two parameters are enabled.
IP Address a.b.c.d
If necessary, use the IP Address and Mask parameters to further qualify the way in which the
router routes packets. If the values in this text box and the Mask parameter are set, the source
address of the packet being routed must match these parameters before the packet will be
routed through the specified interface.
Mask a.b.c.d
The netmask specified with the IP address as explained above.
Digi TransPort WR Routers User Guide
Static routes
369