Initially, we will need to understand router and its function
A router : is a device which has multiple interfaces and is connected to multiple networks
through these interfaces. This means that it can forward data from one network to another.
Router function : the router listen on all connected interfaces for incoming ip packets . When packests come in ,it takes the destination ip address and looks up this address in a routing table .
Route table function : specifies the next hop to forward this packet this packet to .This happens at every router, until the packet reaches its final destination .
The routing tables two most important information items are:
1- final destination may be one of this
The final destination is on a local network. In this case, the local interface is
The final destination is not on a local network. In this case, another router is
specified. This router normally is a system on the local network.
2- we can specify the final destination with three methods
host name : that is mean that the entry in the routing table only applies to packets sent to this specific IP address .
network route : in this method ,the entry in the routing table applies to all packets sent to any IP address which belongs in this network .
default route : in this method , the entry in the routing table applies to all packets which were not matched elsewhere in the routing table.
– Host route: 220.127.116.11/255.255.255.255
– Network route: 18.104.22.168/255.255.255.0
– Default route: 0.0.0.0/0.0.0.0
-we can see that throw terminal . – application…accessories…terminal – and make