Most of the data traffic on the internet, especially traffic between major networks, is done through private peering. However, because of the resources required to make each private peer available, many networks are not willing to provide private peers to “small” networks or “new” networks that have not yet proven that they will provide a mutual benefit. Nevertheless, the exchange of transport services between peering operators is generally a free agreement between the parties. If peer-partner traffic is unbalanced and one party disproportionately sends the other data traffic, the parties may accept a leak to a paid peering agreement. You also need to make some decisions about your own peering policy. Are you going to take ice cream with someone who asks, or are you going to analyze each application and decide on a case-by-case basis? To understand the breakdown between transit and peering, go to this interview with our own Paul Brodsky. Not all peering exchanges are carrier-neutral. You may need to use their computing centers to power their network. Ask for it before you sign a peering agreement, as you may want that flexibility later.
NYIIX is neutral with peering sites open in NY, LA and PA. LINX, our Telehouse London Internet Peering Exchange, connects you to Europe. You need someone to handle your peering for yourself. You need to know which networks you should call, contact these networks and make arrangements. Sometimes this means sending emails, and sometimes it`s about making phone calls or personally looking for employees of other network operators. Many peering agreements are facilitated by personal meetings, so that if you can, you go to peering forums and IXP meetings. Some networks will say yes or no without much discussion, but in some cases you may need to explain how much traffic is being exchanged between your network and your network and why peers would benefit them. Under the usual definition of peering, networks exchange all traffic from one of their customers to one of the others, on anyone on the network. One of these variants is that networks only exchange data traffic between certain customers, usually customers in a given region.
For example, a global network associated with a local Swedish network may use the peering session only for traffic to and from its Swedish customers. This would relieve them of the burden of transporting traffic around the world to the Swedish network if the Swedish network does not do the same for them. This is called partial or regional peering. The world`s largest stock exchange offices are DE-CIX in Frankfurt, AMS-IX in Amsterdam, LINX in London, the Moscow Internet Exchange, Equinix Ashburn in Washington D.C. and JPNAP in Tokyo.  The United States, with a historically greater focus on private peering and commercial public peering, has far less visible traffic on public peering switching fabrics than in other regions dominated by non-profit exchange points. Overall, the many exchange points operated by Equinix are generally considered to be the most important, although traffic figures are generally not published. Other important but smaller trade points are Lipex and LONAP in London, NYIIX in New York and NAP of the Americas in Miami. Peering policies are often used to achieve consistency in the assessment of connection requirements and generally aim to set reasonable, transparent and safe limits, thus avoiding future differences of opinion in the event of a change in data volume or other factors. PeeringDB is a resource in which many network operators dividing their peering policies and sites in order to make them easily accessible to other network operators on a global basis.
One of the advantages of working with an Internet exchange like DE-CIX is that they often have multilateral agreements, which means that their requirements to be a member meet most of their clients` requirements for peers.