Open Issues in Interdomain Routing: A Survey.

The article presents information on a survey of several research challenges in interdomain routing. It is considered as a challenging research area, which is mainly rooted in two main areas. First. the interdomain routing protocol currently used in the Internet has several limitations, but its replacement is not a realistic option due to its worldwide deployment. Second, these interdomain routing denotes routing among distinct domains are networks. The Internet is a decentralized collection of computer networks from all around the world. These networks are known as a domains or an autonomous systems (AS). An AS is a network or group of networks under a common routing policy and managed by a single authority. The current Internet is basically the interconnection of more than 20,000 ASes. Each of these ASes usually uses one or more interior gateway protocols, such as Intermediate System to Intermediate System or Open Shortest Path Firs, to exchange routing information within the AS, known as intradomain routing. This interdomain routing focuses on the exchange of routes to allow the transmission of packets between different ASes.