Transcript NEtwork MObility

NEtwork MObility
By: Kristin Belanger
Contents
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Introduction
Mobile Devices
Objectives
Security
Solution
Organizations
NEMO Basic Support
Bi-directional Tunnels
Problem Solving
Route Optimization
Introduction
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Network Mobility –
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“when a router connecting a network to the
Internet dynamically changes its point of
attachment to the Internet thereby causing
the reachability of the said network to be
changed in relation to the fixed Internet
topology”
When mobile device changes globally
Mobile Devices
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Examples
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Personal Area Networks
PDA’s
 Cell phones
 Sidekicks
 OnStar*
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Objectives
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Challenges facing IPv4 and IPv6
NEMO Basic Support
Changes in protocols
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Security
RFC’s
Security
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Authentication
Authorization
Confidentiality
Solution
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Support group
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Different levels of complexity
Interfaces
Rules and requirements
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IP layer
Traffic must pass through bi-directional tunnel
Must support mobile nodes, routers, hosts
Preserve connections established through interface
Organizations
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MIPv6 Home Network
NEMO Extended Home Network
NEMO Aggregated Home Network
Virtual Home Network
NEMO Mobile Home Network
NEMO Basic Support
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Continuous activity
Solves problems with bi-directional tunnel
Connectivity to different hardware
Multi-homed
Home agent – router on home network
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Anchor point along with nodes
Nested mobile networks
Bi-directional Tunnels
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Connection mobile router – home agent
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Secure
Can create many problems
Diverting traffic
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New established tunnel
Split traffic with many tunnels
Problem Solving
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Failure Tolerance
Failure Detection
Path Exploration
Path Selection
Re-homing
Route Optimization
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SPF problem
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Bottleneck in home network
Increased delay
Solution?
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Data must go through home agent
Causes congestion
Direct path
Longer route = packet delay
Shorter route = increase load on network
Conclusion
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Very complex problem
Constant changing information
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Problems
Will continue to grow
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More problems
Questions?