Definition
Routing Table
A routing table is a data structure maintained by a router that maps destination IP addresses to the next hop for forwarding packets. Each entry specifies a destination network, a netmask, a gateway, an outgoing interface, and a metric.
Static vs. Dynamic
Routing tables can be static, which is typical for smaller networks, or dynamic, where entries are updated automatically by routing protocols such as OSPF or BGP.
Example
Routing table
Destination Netmask Gateway Interface Metric 0.0.0.00.0.0.0203.0.113.1eth01 192.168.1.0255.255.255.00.0.0.0eth10 10.0.0.0255.255.0.0192.168.1.254eth12 203.0.113.0255.255.255.00.0.0.0eth01 127.0.0.1255.0.0.00.0.0.0lo0