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this is a descent ppt prepared by me on - SURVIVABLE NETWORK SYSTEMS.
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Survivable Network Systems
Presented By,
KARUNAKAR THAKUR
Guided By,
Ms. Supriya Pawar
Date: 01/03/12
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.
Contents
Expressing Survivability Requirements. Survivability : Design And Implementation
Strategies. Case Study on Survivability in optical
networks Research Directions. Future Scope. Conclusion.
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.
IMPORTANCE OF NETWORKS
Principal enabling agents in business,industry,government, and defense.
Other Sectors : energy,transportation,telecommunication,
manufacturing,financial services, health care
and education.
Survivable System With 3 R's : Resist , Recognize , and Recover
Effected node due to attack.
DOMAIN OF SURVIVABILITY
ITS CHARACTERISTICS
Survivability as an Integrated Engineering Framework
Survivability and Security Survivability and Fault Tolerance The Current State of Practice in Survivable
Systems
Survivability Requirements
Survivability and System Requirements
Survivability: Design
Survivability Analysis Is Protocol-Based Not Topology-Based
Survivability Requires a Management Component
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 .
Algorithm: For a Primal Approach
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
APS
Case Study
There are two types of SHR’s :
1. Unidirectional SHR (USHR)
2. Bi-directional SHR (BSHR)
Restoration Steps
Survivability in WDM network
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.
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.
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.
Questions????
Have a nice day……..Thank You!!!