Routing Information Protocol (RIP)

RIP is implemented by in.routed, the routing daemon, which automatically starts when the system boots. When run on a router with the s option specified, in.routed fills the kernel routing table with a route to every reachable network and advertises “reachability” through all network interfaces.

When run on a host with the q option specified, in.routed extracts routing information but does not advertise reachability. On hosts, routing information can be extracted in two ways:

• Do not specify the S flag (capital “S”: “Space-saving mode”). in.routed builds a full routing table exactly as it does on a router.

• Specify the S flag. in.routed creates a minimal kernel table, containing a single default route for each available router.