So we'll now look at Internet resources that are required for internet exchange point. First off the address space. Some exchange points will use private addresses for the exchange point land the theory being that public address space could mean that the exchange point network is leaked to the Internet and that could be undesirable but actually these days most high speeds filter private address space so this avoids the problem in fact most exchange points use public addresses for the exchange point land their address space is readily available from the regional registries via specific regional registry policies IXP terms of participation quite often forbid the exchange point land to be carried within the ISP member backbone and announced to the public internet IXPs provide both v6 and v4 support on IX LAN. There's no need for separate LANs for ipv6 and ipv4. As for autonomous system numbers, exchange points by themselves do not require ASNs. Ethernet switch is a layer 2 device and doesn't run BGP; however ,some exchange points have a device called a route collector. This usually runs in a private AS. Some exchange points have a route server and this usually runs in a public AS. Some exchange points have common good services. These usually require internet transit meaning the exchange point requires a transit router. The exchange point will arrange transit for services with a couple of the member providers and this transit router requires a public AS number and public address space again obtainable from the regional registries.
© Produced by Philip Smith and the Network Startup Resource Center, through the University of Oregon.
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