April 13, 2014
Border Gateway Protocol (BGP) is an Exterior Gateway Protocol (EGP) used for routing and reachability between inter-autonomous systems. Autonomous system can be defined as an administrative unit with common policies for routing. IGPs are used for routing and reachability within an autonomous system (as earlier defined; note different from concept of Areas in OSPF); typically within a customer network. BGP is used on the internet and between ISPS. BGP comes in two forms IBGP and EBGP. Internal BGP (IBGP) is […]