P2P Over MANET

1
P2P Over MANET

• An Introduction to Mobile Resource Sharing

2
Introduction to MANETs

• Mobile Ad Hoc Network (MANET)
• Under research for the past 10 years
• Only a small amount of MANETs are currently used
  in the real world
• Autonomous system of mobile routers and nodes
• All elements reside on wireless domains
• Nodes can join and leave the network at any time
• Dynamic topology
• Wireless connectivity implements node mobility
• Primarily operates in the network layer (layer
  3), but can be implemented in other layers as
  well

3
MANET Interface

• Connecting point where nodes can attach1
• Allows MANETs to connect to each other
• Every MANET interface must have a unique
  identifier
• Neighborhood
• Time-varying asymmetric Reachability1

4
MANET Neighbors
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MANET Asymmetric Readability
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MANET Router (MR)

• Has one or more MANET interfaces
• May have zero or more non-MANET interfaces 1
• Hides MANET characteristics from all nodes that
  do not support MANET
• Only one MR is required to setup a MANET,
  however, the more the better

7
MANETs and Other Wireless Network Technologies

• IEEE 802.11 (WI-FI) can not be used to implement
  a MANET, they do not share characteristics
• WI-FI is just a wireless version of a wired
  network3
• The two main differences in WI-FI and MANETs
• WI-FI operates in the data-link layer (layer 2)
  and MANETs must exist in the network layer
• Access points are required for a WI-FI network to
  effectively work, which is a rule that is not
  bound to MANETs
• Bluetooth has been successfully used to
  implemented a MANET

8
MANETs and Existing Wired Networks

• Can be implemented as an overlay on top of any
  wired topology or network
• Routers which support intercommunication can have
  two or more interfaces including MANET interface
• Specific MANET routing protocols are used to
  route traffic across its network
• MANET packets are encapsulated in IP packets and
  vice versa
• In an MANET overlay, a node on the MANET network
  can communication with a node located on an IP
  network. This transformation is bi-directional

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Asymmetric Reachability
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Peer to Peer (P2P)

• An Overview of P2P will start here and continue
  for the next 3 to 5 slides

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P2P Over MANET

• A mobile ad hoc network with a peer to peer
  overly
• The MANET will operate in the first four layers
  of the OSI model, while P2P will run in the
  fourth through seventh layer
• Both inhibit similar characteristics
• Next generation of client based networks

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P2P Over MANET

• Can be implemented in more than one way
  considering that
• There is more than one MANET protocol
• P2P can be built as a structured, unstructured,
  data-centric, overlay, or hybrid architecture.
• Each P2P architecture has a multitude of
  protocols and characteristics which inhibit
  different features and constraints
• A structured P2P architecture works best with
  MANETs
• Structured P2P uses Distributed Hash Tables
  (DHT), which there are many to choose from with
  different characteristics i.e. Chord, Pastry,
  etc.

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P2P Over MANET Protocol Stack
P2P
OSI
Application
Application
Presentation
Presentation
Session Layer
Session Layer
MANET
Transport
Transport
Transport
Network
Network
Data-link
Data-link
Physical
Physical
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Homogeneous Characteristics of P2P and MANET

• Supports node churning2 consistency of nodes
  entering and leaving the network
• Traffic patterns closely resemble those caused by
  multi-hop broadcasting or multicasting 3
• Dynamic topology
• The ability for nodes to rearrange themselves
  when connecting to the network
• Fault tolerant resistant and transparent to
  errors
• Unique Identifiers are required to identify nodes

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Why P2P Over MANET

• Put some good stuff to say here about the
  benefits of P2P Over MANET

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P2P Over MANET Architectures

• The P2P Over MANET description of architectures
  starts here and will continue for the next 3 to 5
  slides.

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Example of P2P Over MANET Architecture

• This slides starts the description of example and
  will continue for the next 4 to 6 slides

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Typical Problems with P2P Over MANET

• Put some things that need to be fixed with P2P
  Over MANET here

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Possible Applications for P2P Over MANET

• The applications for P2P Over MANET starts here
  and continues for maybe one more slide

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References

• References will go here