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“An IXP is a physical infrastructure managed by a single entity with the aim to facilitate the exchange of Internet traffic among different Autonomous Systems. There must be at least three ASNs connected and there has to be clear and open policies to allow the participation of new ASNs.”.

This is the official definition accepted within Euro-IX, the European Association of Internet Exchange.(EURO-IX).

Typically an IXP is based on an Ethernet LAN available to the ISPs which can exchange their IP traffic with all the other ISPs present on the IXP.

The exchange of traffic, called peering, is Public, if the traffic is exchanged on public VLANs shared amongst all the partecipants; it is Private if the VLANs are dedicated to the traffic of two ISPs.

By connecting to an IXP, an Internet Service Provider can use a single geographic flow (physical link) to interconnect itself to a variety of networks of different operators (Autonomous System - AS), instead of using many AS circuits.

In addition to the clear economical and organizational advantages, this direct connection among the operators through an IXP decreases the “distance” between networks and has the effect of providing a better service to the end users.

To better understand what we have just explained, see "The Internet Revealed" the winner video of Euro-IX "Film Competition".

For any further information visit Euro-IX web pages


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