Exterior gateway protocol egp is commonly used in the internet to exchange routing table information. An interior gateway protocol igp is a type of protocol used for exchanging routing information. So, the merger of access control models with routing protocols can give a secure. Pdf global routing in the internet continues to have scalability problems which underscore weaknesses in the design and. Exterior gateway protocols are routing protocols used on the internet for. The result is that many internetworks nowadays combine multiple routing protocols with multiple degrees of inelegance, all under common. Relationships between interior and exterior routing assignments. Bgp is used by companies with more than one internet provider to allow them to have redundancy and load balancing of their data transported to and from the internet. Given a forwarding table, move information from input ports to output ports of a router. Interior and exterior gateway protocols dynamic routing. Exterior gateway protocols handle routing outside an autonomous system and get you from your network, through your internet providers network and onto any other network. A gateway starts out with entries for all of the networks that are directly connected to it. Dynamic routing protocols are divided into interior and exterior gateway protocols. Major classes of routing protocols like egp exterior gateway protocol and igp interior gateway protocol are used for getting best statistics.
Which dynamic routing protocol was developed as an exterior gateway protocol to interconnect different internet providers. What is the difference between interior and exterior routing protocols. The protocols are utilized to keep track of getting between destinations to other side of a network or to administrate the networks. It is used inside interior to an independent network system. The four key components that combine to give eigrp its advanced capabilities are. While running a single routing protocol throughout your entire ip. Igp interior gateway protocols are commonly made up of routing protocols. Exterior gateway protocol egp for ip yes, an egp named egp the isos interdomain routing protocol idrp novell also incorporates an egp functionality, called level 3 routing, into nlsp. Interior gateway protocols type 1, linkstate routing protocols, such as ospf and isis interior. Based on the interior gateway and the exterior gateway protocol, the internet is built. By contrast, exterior gateway protocols are used to exchange routing information between. In any ip network, routing protocols provide the intelligence that takes a collection of.
Having given these definitions, it must be said that the common usage of the term autonomous system is not so absolute. Each routing protocol builds its own routing table local rib. Autonomous systems routing is handled by interior gateway protocols. There is only one exterior gateway protocol egp exists now and it is border gateway protocol bgp. It supports multiple metrics for each node which includes delay, load and bandwidth, in order to compare the 2 routes which are combined into single metrics. Master thesis jon larizgoitia university of twente. Interior gateway protocols are used inside an organizations network and are limited to. Interior gateway protocols rip, ospf interior gateway protocols rip and ospf what is routing. Pdf internet exterior routing protocol development. Networking explain interior and exterior routing protocols. Interior and exterior gateway protocols dynamic routing protocols.
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