How Does A Router Handle A Packet Destined For A Network That Is Not Listed In The Routing Table?

How Does A Router Handle A Packet Destined For A Network That Is Not Listed In The Routing Table?

Here, if the packet cannot be found in the specified routing table then we move it to another routing table in order to check the packet which we want to send to the destination network. Today, let us learn about the topic of the router and how the router will be able to send the packets to the specified network.

We all know that the router is nothing but a device that can able to send and receive packets between the two networks. we can connect any number of networks to a single network.

Normally we will connect at least two networks to a single router.

In order to maintain communication between the two devices, we use the router. In order to maintain the network between the two routers, we need an internet service provider which can make the communication network between the two routers or two networks.

Let us take an example to understand this concept in detail. For suppose if we want to send the packets to the specified destination address, here firstly it will check the routing table to make sure if the packet Is present or not. If the packet is not found in the routing table then we move to another router and try to find the packet that we are searching for.

Now let us know the working of the router in detail. Let say we have two ports to a single router or two interfaces that are connected to the router. Here let say one of the interfaces is going to connect to the network called the local area network and another interface will be connected and communicating through the router of the network

 Hence, the two sides of the router can be used for many different purposes. One will be used to connect to the network and the other will be used to connect to the internet service provider. The internet service provider can be shortly called the ISP, which can be used to provide the internet for all the devices that are connected to the network.

 We consider routers as the pre-determined paths that can able to send the packets from one to another subnet.

 Now want is routing table. How the routing table can be used in the network

The routing table will store all the TCP and the IP information in it. Here the router will be able to use the router’s destination address from the routing table and transmit the packets to its specified destination address. This information will be compared with the information that is stored in the routing table.

The routing table consists of the destination IP address, subnet mask, gateways and the interface

The subnet mask is considered as the network I’d and the types of interfaces that are being used in it.

Hence, if the required address cannot be found in the routing table then we move to another router to search.