I-D ACTION:draft-white-pathconsiderations-02.txt

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	Title		: Considerations in Validating the Path in Routing
                          Protocols
	Author(s)	: R. White, et al.
	Filename	: draft-white-pathconsiderations-02.txt
	Pages		: 10
	Date		: 2004-4-16
	
A good deal of consideration has gone into, and is currently being
   given to, validating the path to a destination advertised by an
   adjacent router or peer, such as [S-BGP], [SOBGP-DEPLOY], and [IRV].
   Since much of this effort has been focused on BGP, this draft
   discusses some issues with this work in terms of BGP.

   One of the primary assumptions in much of this work is that the
   authentication of a given advertisement received by a specific BGP
   speaker is the same as authorization to use the path advertised. In
   other words, it is generally assumed that if a BGP speaker receives
   an advertisement for which the AS Path can somehow be verified, the
   speaker is authorized to transit traffic along the path specified
   contained in the update, and the traffic forwarded to the destination
   contained in the update will actually follow the path advertised.

   This draft shows these two assumptions cannot be held to be true in a
   path vector routing system.

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