As all of the people reading this article probably know, BGP can be a beast that very few network engineers and consultants ever really battle, as it is used only on a specific type of network. This type of network is that of ISP’s and large enterprises with multiple external connectivity points. So why is it used in this way?
Well because it is an Exterior Gateway Protocol (EGP) as opposed to an Interier Gateway Protocol (IGP) which is what defines the more commonly known protocols including:
- RIP (Routing Information Protocol),
- OSPF (Open Shortest Path First),
- IS-IS (Intermediate System to Intermediate System),
- IGRP (Interior Gateway Routing Protocol),
- EIGRP (Enhanced Interior Gateway Routing Protocol).
As such it operates in a different way from these other protocols.
To read the entire article, please follow the accompanying link: http://blog.pluralsight.com/bgp-border-gateway-protocol