I-D ACTION:draft-thubert-nina-01.txt

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	Title		: Network In Node Advertisement
	Author(s)	: P. Thubert, et al.
	Filename	: draft-thubert-nina-01.txt
	Pages		: 31
	Date		: 2007-7-5
	
The Internet is evolving to become a more ubiquitous network, driven
   by the low prices of wireless routers and access points and by the
   users' requirements of connectivity anytime and anywhere.  For that
   reason, a cloud of nodes connected by wireless technology is being
   created at the edge of the Internet.  This cloud is called a MANEMO
   Fringe Stub (MFS).  It is expected that networking in the MFS will be
   highly unmanaged and ad-hoc, but at the same time will need to offer
   excellent service availability.  The NEMO Basic Support protocol
   could be used to provide global reachability for a mobile access
   network within the MFS and the Tree-Discovery mechanism could be used
   to avoid the formation of loops in this highly unmanaged structure.
   Since Internet connectivity in mobile scenarios can be costly,
   limited or unavailable, there is a need to enable local routing
   between the Mobile Routers within a portion of the MFS.  This form of
   local routing is useful for Route Optimization (RO) between Mobile
   Routers that are communicating directly in a portion of the MFS.

   Network In Node Advertisement (NINA) is the second of a 2-passes
   routing protocol; a first pass, Tree Discovery, builds a loop-less
   structure -- a tree --, and the second pass, NINA, exposes the Mobile
   Network Prefixes (MNPs) up the tree.  The protocol operates as a
   multi-hop extension of Neighbor Discovery (ND), to populate TD-based
   trees with prefixes, and establish routes towards the MNPs down the
   tree, from the root-MR towards the MR that owns the prefix, whereas
   the default route is oriented towards the root-MR.

   The NINA protocol introduces a new option in the ND Neighbor
   Advertisement (NA), the Network In Node Option (NINO).  An NA with
   NINO(s) is called a NINA (Network In Node Advertisement).  NINA is
   designed for a hierarchical model where an embedded network is
   abstracted as a Host for the upper level of network abstraction.
   With NINA, a Mobile Router presents its sub-tree to its parent as an
   embedded network and hides the inner topology and movements.

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