Realization of a Typical ISP Network Using GNS3 Tool

Internet is the network of networks and is also called ‘internetwork’. Border Gateway Protocol (BGP) is the protocol of the internet. It is a standardised Exterior Gateway Protocol. It manages how packets are routed across the internet through the exchange of routing and reachability of information. In this paper we have put in efforts to realize a typical ISP network using a Network Simulation Tool. Efforts have been made to design a sophisticated network containing a network architecture well suited to route packets between various ISPs providing services for accessing, using or participating in the Internetwork. To realise an ISP network we have to draw limelight on various networking concepts and protocols. Redistribution [1], virtual-link configuration, Access Control List, internal BGP, external BGP and BGP route reflectors are a few considerable concepts and have paramount importance in building a worldly-wise ISP network.

Keywords: Border Gateway Protocol (BGP), realize a typical ISP network using a Network Simulation Tool, Redistribution, virtual-link configuration, Access Control List, internal BGP, external BGP and BGP route reflectors.