Like other very successful protocols such as HTTP and DNS, over the years BGP has been given more and more additional jobs to do. In this blog post, we’ll look at the new functionality and new use cases that have been added to BGP over the years. These include various...
Whether you are an experienced network administrator or you have just started to learn Border Gateway Protocol (BGP), Looking Glass (LG) is definitely a topic you should not ignore. What is BGP Looking Glass? Looking Glass (LG) servers are a real-time source of...
Before we look at BGP path hunting, let’s first discuss the RIP count to infinity problem. RIP, the Routing Information Protocol, is pretty much the simplest bgp table imaginable. RIP simply broadcasts the contents of the local routing table over UDP every 30...
Border Gateway Protocol is unique among routing protocols because it requires a number of parameters to be configured manually on each side before two routers can communicate. As a result, it’s not uncommon for sessions to fail to be established. There are also...
In our last post, we took a look at RPKI. With RPKI, it’s possible to reject prefixes that are originated by the wrong AS, as well as prefixes longer (more specific) than what the holder of the address block in question intended to be injected into BGP. This...
