Алгоритми маршрутизації в мережах

/* If the main RIP socket is off and it makes sense to turn it on,

* then turn it on for all of the interfaces.

*/

if (rip_interfaces > 0 && !rdisc_ok) {

trace_act("turn on RIP");

/* Close all of the query sockets so that we can open

* the main socket. SO_REUSEPORT is not a solution,

* since that would let two daemons bind to the broadcast

* socket.

*/

for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) {

if (ifp->int_rip_sock >= 0) {

(void)close(ifp->int_rip_sock);

ifp->int_rip_sock = -1;

}

}

rip_sock = get_rip_sock(INADDR_ANY, 1);

rip_sock_mcast = 0;

/* Do not advertise anything until we have heard something

*/

if (next_bcast.tv_sec < now.tv_sec+MIN_WAITTIME)

next_bcast.tv_sec = now.tv_sec+MIN_WAITTIME;

for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) {

ifp->int_query_time = NEVER;

rip_mcast_on(ifp);