Define routing table. Differentiate static routing table with dynamic routing table.

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A routing table is a set of rules, often viewed in table format, that is used to determine where data packets traveling over an Internet Protocol (IP) network will be directed. All IP-enabled devices, including routers and switches, use routing tables.

See below a Routing Table:

 Destination      Subnet mask         Interface
 128.75.43.0      255.255.255.0       Eth0
 128.75.43.0      255.255.255.128     Eth1
 192.12.17.5      255.255.255.255     Eth3
 default                              Eth2

The entry corresponding to the default gateway configuration is a network destination of 0.0.0.0 with a network mask (netmask) of 0.0.0.0. The Subnet Mask of default route is always 255.255.255.255 .

Difference Between Static Routing and Dynamic Routing:

Static Routing Dynamic Routing
In static routing routes are user-defined. In dynamic routing, routes are updated according to the topology.
Static routing does not use complex routing algorithms. Dynamic routing uses complex routing algorithms.
Static routing provides high or more security. Dynamic routing provides less security.
Static routing is manual. Dynamic routing is automated.
Static routing is implemented in small networks. Dynamic routing is implemented in large networks.
In static routing, additional resources are not required. In dynamic routing, additional resources are required.
In static routing, failure of the link disrupts the rerouting. In dynamic routing, failure of the link does not interrupt the rerouting.
Less Bandwidth is required in Static Routing. More Bandwidth is required in Dynamic Routing.
Static Routing is difficult to configure. Static Routing is easy to configure.
Another name for static routing is non-adaptive routing. Another name for dynamic routing is adaptive routing.
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