![]() ![]() The top router only knows the MAC addresses of the red interfaces out Routers A,B,C. The point is, in a routed network, the ARP information is only good for one hop. When you get to the airport you look at the boarding screen to see what the gate number is for your next leg (which is a rough analogy for ARP lookup). I often use the analogy of an airline ticket: you may be able to fly direct, or there may be more than one leg but it's the same process to book the flight either way. The beauty of Internet Protocol (or any network layer protcol) is that allows you communicate with a system that is more than one hop away. Each node on the network can communicate directly with another by sending a frame to it with the destination MAC address in the packet (source address there too, of course). ![]() It seems that you have a conceptual problem, so I'm going to take it back to basics:Įthernet can be thought of as a bus, which the orginal thickwire Ethernet more or less was. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |