Updating routing table

, needs to visit the main office for some hardware maintenance.

Once the machine is booted and connected to the Ethernet, it's ready for IP reconfiguration.

In order to join an IP network, the following information is required.

First, the active interface must be brought down, then a new address must be configured on the interface and brought up, and finally a new default route must be added.

If the networking configuration is correct and the process is successful, the machine should be able to connect to local and non-local destinations.

The construction of routing tables is the primary goal of routing protocols.

Static routes are entries made in a routing table by non-automatic means and which are fixed rather than being the result of some network topology "discovery" procedure.

If the node cannot directly connect to the destination node, it has to send it via other nodes along a proper route to the destination node.

Most nodes do not try to figure out which route(s) might work; instead, a node will send an IP packet to a gateway in the LAN, which then decides how to route the "package" of data to the correct destination.

Each gateway will need to keep track of which way to deliver various packages of data, and for this it uses a Routing Table.

A routing table is a database which keeps track of paths, like a map, and allows the gateway to provide this information to the node requesting the information.

The problem I have is that when I delete one cable (to simulate a failure) both routers which are connected to this cable loose all OSPF routing table entries.

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