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The AS 7007 incident was a major disruption of the Internet on April 25, 1997 that started with a router operated by autonomous system 7007 (Florida Internet Exchange) accidentally leaking a substantial part of its entire route table to the Internet, creating a routing black hole.

Unusually, the routes leaked had somehow become advertised as more specific than the routes originally present on the Internet, leading the Border Gateway Protocol used by the Internet's routers to prefer the leaked routes. This was then exacerbated by other problems that prevented the routes from disappearing from networks' routing tables, even after the original router had been disconnected. The combination of these factors resulted in an extended disruption of operations throughout the Internet.

Analysis of this event led to major changes in ISPs' BGP operations intended to mitigate the effects of any subsequent similar events.

[edit] See also

• Route filtering

[edit] External links

• "Router glitch cuts Net access". cnet news. April 25, 1997. http://news.cnet.com/2100-1033-279235.html. Retrieved 2009-03-06. 
• Murphy's Law Strikes Again: AS7007
• What actually happened
• Origin authentication in interdomain routing
• Interdomain Routing Security

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