I-D ACTION:draft-clausen-nemo-ro-problem-statement-01.txt

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	Title		: NEMO Route Optimisation Problem Statement
	Author(s)	: T. Clausen, et al.
	Filename	: draft-clausen-nemo-ro-problem-statement-01.txt
	Pages		: 15
	Date		: 2007-3-8

The NEMO basic support specification is not limited to a single level
   of mobile networks attaching to the stationary Internet.  Rather,
   arbitrary levels of nested mobile networks are supported, employing
   for each level of nesting the same attachment, encapsulation and
   tunnelling mechanisms.  With arbitrarily deep nested mobile networks,
   paths taken by data traffic can be extremely sub-optimal both inside
   the nested topology through successive mobile routers, and outside
   the nested topology, through successive Home Agents over the
   Internet.  Moreover, the overhead incurred through tunnelling and
   encapsulation of data traffic can become prohibitively large.  This
   document analyses the scenarios in which these problems are
   particularly acute.

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