A router is receiving a stream of incoming packets and does not contain a route to the remote destination network. What configuration can a network administrator issue in order to successfully forward the incoming packets?
- Add a default route.
- Enable a dynamic routing protocol.
- Share the routing table with the hosts on the local network.
- Change the IP address of the ingress interface to match the targeted destination network.
Answers Explanation & Hints:
A router contains a routing table of all locally connected networks and the interfaces that connect to them. The routing tables can also contain the routes that the router uses to reach remote networks. Entries can be made to the routing table in two ways. The first is that the router via the use of a routing protocol can be dynamically updated by information received from other routers in the network. The second is that the entries can be manually entered by a network administrator. If the router cannot determine where to forward a packet, it will drop it. Network administrators can configure a default route to keep a packet from being dropped because the path to the destination network is not in the routing table. A default route is the interface through which the router forwards a packet containing an unknown destination IP network address.