What do the entries mean?

IP address and network mask identify the destination network, the distance shows the number of routers between the transmitter and receiver, and the last column shows which router advertised this route. With the 'Time', the dynamic table shows how old the route is. The value in this column acts as a multiplier for the interval at which the RIP packets arrive, so a '1' stands for about 30 seconds, a '5' for about 2.5 minutes, and so on. When new information about a route arrives, this route is considered to be directly accessible and receives the time '1'. The value in this column is automatically incremented when the corresponding amount of time has elapsed. After 3.5 minutes, the distance is set to '16' (route unavailable), and after 5.5 minutes the route is deleted.

If the router now receives an IP RIP packet, it must decide whether or not to include the routes it contains in its dynamic table. This is done as follows:

Note: RIP packets from the WAN are ignored and immediately discarded. RIP packets from the LAN will be evaluated and are not propagated in the LAN.

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