Allied Telesis AT-S63 - Manual (Page 579)

AT-S63 Management Software Command Line Interface User’s Guide
Section VII: Internet Protocol Routing 579
add ip route=162.14.150.0 nexthop=162.76.44.12
mask=255.255.224.0 metric=5 preference=25
This command adds a default route. The IP address of the next hop is
172.211.16.12. No mask is specified for a default route. As with a static
route, specifying an interface for the default route is unnecessary since the
switch automatically adds the route to the interface on the same subnet as
the next hop:
add ip route=0.0.0.0 nexthop=172.211.16.12