Network survivability karunakar
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Survivable Network Systems
Presented By,
KARUNAKAR THAKUR
Guided By,
Ms. Supriya Pawar
Date: 01/03/12
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Contents
What is ‘Survivability’? Domain of survivability. Characteristics of Survivable Systems. Survivability as an Integrated Engineering
Framework The Current State of Practice in Survivable
Systems.
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Contents
Expressing Survivability Requirements. Survivability : Design And Implementation
Strategies. Case Study on Survivability in optical
networks Research Directions. Future Scope. Conclusion.
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What is ‘SURVIVABILITY’?
Survivability can be defined as the capability of a system to fulfill its mission, in a timely manner, in the presence of attacks, failures, or accidents.
Built On : Security,Fault Tolerance,Safety,Reliability,Reuse,Performance,
Verification and Testing.
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IMPORTANCE OF NETWORKS
Principal enabling agents in business,industry,government, and defense.
Other Sectors : energy,transportation,telecommunication,
manufacturing,financial services, health care
and education.
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Survivable System With 3 R's : Resist , Recognize , and Recover
Effected node due to attack.
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DOMAIN OF SURVIVABILITY
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ITS CHARACTERISTICS
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Survivability as an Integrated Engineering Framework
Survivability and Security Survivability and Fault Tolerance The Current State of Practice in Survivable
Systems
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Survivability Requirements
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Survivability and System Requirements
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Survivability: Design
Survivability Analysis Is Protocol-Based Not Topology-Based
Survivability Requires a Management Component
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Strategies To Improve Network Survivability
Techniques to improve network survivability can be classified into three categories:
1.Prevention
2.Network Design and capacity allocation
3.Traffic Management and Restoration
The ideal survivability goal is to make a network failure imperceptible to the network users by providing service continuity .
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Algorithm: For a Primal Approach
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Case Study on Survivability in Optical Networks
Survivability techniques : 2 categories –
1. Predesigned Protection – APS and SHR’s
2. Dynamic Restoration : Restoration Steps
Three main architectures of APS :
1. 1+1
2. 1:1
3. 1:N
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APS
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Case Study
There are two types of SHR’s :
1. Unidirectional SHR (USHR)
2. Bi-directional SHR (BSHR)
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Restoration Steps
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Survivability in WDM network
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Research Directions
Representing intruder environments through intruder usage models.
Adapting and developing architectural description techniques to adequately describe large-scale distributed systems with survivability attribute.
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Future Scope
Unbounded Systems(e.g. Internet) will become free from intruders and attacks .
Thus ,a more risk-free environment for online transactions and banking.
More intelligent networks. Intelligent Firewalls.
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Conclusion
Thus we have seen how survivability is proving an emerging discipline in transformation of networks into an intelligent one that can resist,recognise,recover and adapt according to the attacks made.
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Questions????
Have a nice day……..Thank You!!!