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Table A12-8. Arguments for route Command (continued)
Argument Description
–F Flushes all hardwired routes from the route cache and
routing table. It does not flush interface routes.
–fF Flushes all non-interface routes from the routing table
and route cache.
add Adds a static route to the route cache. It also adds the route to
the routing table if the gateway argument (see below)
specifies an address that is directly reachable on an active
interface.
delete Deletes a route from the route cache and the routing table. No
notification is sent to other routers; they must age the route
themselves, which takes 3 minutes. Cannot be used to delete
interface routes.
expire Marks a route as expired by setting its usage to +0 and its
metric to 16 (infinity). The lifetime of the route is set to two
minutes, during which time RIP continues to advertise the
route. This allows other routers to learn that the route is
invalid. Cannot be used for interface routes.
replace Replaces the gateway in the route for dest with the new
gateway you specify. Cannot be used to replace interface
routes.
–h Specifies a hardwired static or default route that RIP cannot
replace.
default Specifies the default route. See Risks When Adding or
Deleting Default Routes on page A12-45.
dest Specifies the destination address of the route.
mask Specifies the subnet mask for the destination address. You can
enter the mask in dotted-decimal notation, for example,
255.255.255.0, or you can specify the mask by appending /n
to the destination address, where n is the number of 1 bits in
the mask, from left to right. For example, appending /24
specifies 255.255.255.0 as the subnet mask. Table A12-4
shows all possible values for the subnet bit count, with the
resultant subnet masks.
Internet Protocol (IP) Routing
A12-43