If we are talking about a Router on the Edge of the Network its easy to understand for me, that with a default Route and one or two other Routes in the Routing Table there should not be a Problem to get packets into the right direction to reach the destination adress.
But i just can't find an answer to the Question, how many routes a more central Router needs to contain to decide, which way a packet should be sent? If there are for example 4 directions a packet can be redirected by a router and he only knows the destination IP Adress. Doesn't that mean, that he would need an entry for every possible IP Adress on the network and the next hop to reach it?
If he doesn't, how should he know, what is the right path to pass the packet? Wasn't able to find that information. Would be grateful for an explanation. No Problem for me to read some Article about it - was just not able to find the answer for myself.
Cheers and thanks in advance.
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