If no specified route for the target network is listed in the routing table, a default route describes where packets will be forwarded. If no default route is specified, any packets with destination addresses that do not match the router's routing database will be discarded.
Click Start, click Run, type cmd in the Open box, and then click OK. Type route print, and then press ENTER to view the routing table. Note the interface number of the network interface that you re-added. Type route print to verify that the new default route appears in the routing table
On stub networks, we must utilise default routing. They only have one way out of the network, thus there can't be a special path chosen for them.
Startups are dynamic and they have to adapt quickly to the changing need of their customers. This is one of the reasons why most startups use default routing.
When no other route is available for an IP destination address, the default route takes effect. When a packet arrives at a routing device, it checks to determine if the IP destination address is within one of the device's local subnets.
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