Frequently asked questions
Peering, autonomous systems and membership at NIXI.
What is an Autonomous System?
An Autonomous System (AS) is a group of IP networks operated by one or more network operator/s which has a single and clearly defined external routing policy. Exterior routing protocols are used to exchange routing information between Autonomous Systems.
When should an Autonomous System be created?
An AS needs to be created if a network connects to more than one AS with different routing policies. Some common examples of Autonomous Systems are networks connected to two or more upstream service providers or exchange points, and networks peering locally at exchange points.
What is an Autonomous System Number?
A public AS has a globally unique number, an Autonomous System number (ASN), associated with it; this number is used in both the exchange of exterior routing information (between neighboring Autonomous Systems), and as an identifier of the AS itself. Autonomous system numbers are used by BGP to describe administrative boundaries on the Internet. There are two types of Autonomous System numbers; Public AS numbers and Private AS numbers.
What is the basic requirement for getting an AS number?
<p><span style="font-family: Roboto, sans-serif;">The basic requirement for an organization to qualify for a Globally Unique AS number is that they be multihomed.</span><br></p>
Does an ISP need a public AS Number to peer with the IXP?
<span>It is strongly recommended that all ISPs get a public AS number. While there are ways to have an ISP connect and gain the benefits of L2 IXP without a public AS number, an ISP with their own AS number has advantages over ISPs who do not. The core requirement for an ISP to qualify for a Globally Unique AS number is that they be multihomed. For joining NIXI, having an ISP License and an AS number are necessary conditions.</span>
What is an Internet Exchange (IXP)?
<span style="font-family: "Times New Roman";">Internet Exchange Points (IXPs) are the most critical part of the Internet's Infrastructure. An Internet Exchange Point is a facility that allows Internet Service Providers to "meet" and exchange traffic, also called peering. This saves money on International bandwidth for the ISPs and improves connectivity for their customers by reducing latency.</span><div><span><br></span></div>