Some Linux systems include the routing daemon routed, an implementation of RIP. To run RIP with routed, simply enter routed.
routed requires no command-line arguments and no configuration file. The routing daemon listens to the RIP updates on the network to build a functioning routing table. If the computer is a router
(routed assumes it's as if the computer has more than one network interface), the routing daemon broadcasts its own updates. If the computer has only one network interface, routed considers it a host, and the routing daemon does not broadcast routing updates.
Command-line options can be used to change this default behavior, regardless of the number of network interfaces installed in the computer. Use -s to force the daemon to broadcast RIP updates; specify -q to stop it from broadcasting update packets. The -q argument is more useful than the -s argument. Sometimes, you don't want a computer with multiple network interfaces broadcasting routes. However, it is unusual to configure a host with only one network interface to broadcast RIP updates.
routed does not require configuration, but it is possible to use the /etc/gateways file to pass supplemental routing information to the routing daemon.
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