 So now you came to know about IP addresses now let's look at Cisco packet tracer and try to see how we can assign these IP addresses and how the different IP addresses play a different role for communication to happen over the network. So here what we have is a file called addressing if you open this you will find your packet tracer topology IP addressing dot pkt let's open this and see what do we have here so what you can see here it opens at this network but if you zoom out you will see a huge network that has been displayed in this particular file. Now let's look at the network very closely so what you see here is a set of four routers here and if you scroll towards your left you see the old topology that we were using as a campus network but instead of the cloud here the internet which we called it we have a set of entire network so what is internet internet is a basically a connection of a lot of networks. Now just to give an idea what this entire topology is so it's a hypothetical case where we have the campus in Mumbai we have another company in Bangalore one in Hyderabad and a hotel and a company in Manali and they all are connected via an internet service provider whose backbone runs at Delhi. Now let's look at the logical view of the topology now this is what is the network of the campus now as we had seen earlier on campus we have the computer center and a hostel so if you look inside the hostel you have this floor area where you have a server room which has your networking devices and all of them are connected to a Wi-Fi router so this is a Wi-Fi router which is there in the gallery to which a laptop or a phone could connect similarly there are wall internet ports to which PCs can connect using a wire so now let's look at how can IP addresses be assigned here