ENSC 427:Communication Networkljilja/ENSC427/Spring15/Projects/team11/ENSC427... · ENSC...
Transcript of ENSC 427:Communication Networkljilja/ENSC427/Spring15/Projects/team11/ENSC427... · ENSC...
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ENSC 427:Communication Network
Comparison of EIGRP, RIP and OSPF Routing Protocols based on OPNET
Group#11James (Chia hung) Lee 301179238 [email protected]
Dong Hao Zhuo 301101257 [email protected] Wen Mai 301187584 [email protected]
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Table of Content● Introduction● Protocols
● RIP● OSPF● EIGRP
● Simulation● Comparison of results● Problems● Organization
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Introduction
● Introduce the basic features of RIP, OSPF, EIGRP
● Simulate three different topologies:● Star ● Large Mesh● Tree
● Compare the performance and convergence using OPNET 18.0
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Protocol: RIPOne of the oldest distance vector protocols. Also, RIP uses the count of hops to determine routing metric.
There are four timers for RIP to operate● Update timer● Invalid timer● Flush timer● Hold-down timer
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Protocol: RIP
A RIP example between two computers
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Protocol: OSPF
Open Shortest Path First is the network protocol that uses a link state algorithm (SPF) to determine the lowest total metric.
Link state routing is usually used for packet switching.
OSPF defines the following routers:
● Internal router (IR)
● Area border router (ABR)
● Backbone router (BR)
● Autonomous system boundary router (ASBR)
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Protocol: OSPF
An example for OSPF and EIGRP choose the paths for six routers.
For OSPF, R1 connects to R2 and R3 via area 0. Also, R2 and R3 connect to R4 and R5 via area 1.
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Protocol: EIGRP
Enhanced Interior Gateway Routing Protocol (EIGRP) is a combination of distance vector and link state algorithms.
*Distance vector protocols is used to calculate the distance to next hop. Therefore, EIGRP goes to the hop which has the minimum distance.
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Protocol: EIGRP
EIGRP selects one of the three possible routers by comparing the metrics. The metric is calculated by bandwidth, delay, and other parameters.
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RIP OSPF EIGRP
Protocol Type Distance Vector Link State Hybrid
Algorithm RMTI SPF DUAL
Convergence slow fast very fast
Default Metric Hops Count Bandwidth Bandwidth/Delay
Hop Count Limit 15 No limit 255
Protocol: Comparison
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Simulation: Star
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Simulation: Large Mesh
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Simulation: Tree
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Simulation: Setting Attributes
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Simulation: Setting Attributes
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Simulation: Setting the Protocol
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Simulation: Setting the duration for simulation
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Simulation: To choose results for comparing
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Comparison: Star Convergence Activity
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Comparison: Star Traffic
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Comparison: Large Mesh Convergence Activity
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Comparison: Large Mesh Traffic
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Comparison: Tree Convergence Activity
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Comparison: Tree Traffic
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Discussion
For Star topologies• Convergence: EIGRP>RIP>OSPF• Traffic Sent (Assumed): EIGRP>RIP>OSPF
For Large Mesh and Tree topologies• Convergence: EIGRP>OSPF>RIP• Traffic Sent (Assumed): EIGRP>OSPF>RIP
Cost • EIGRP>OSPF>RIP
Applicability• OSPF>EIGRP>RIP
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Problems
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Organization and Time Management
‐Current progress: 30% of the final report and 80% of simulation.
‐Planning to fix the problem within 3 days meanwhile write the finalreport.
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Reference[1] Routing Information Protocol (RIP),2003, Retrieved from: https://www.mikrotik.com/documentation/manual_2.6/Routing/RIP.html
[2] Experts at Making You an Expert (iNE),2013, Retrieved from: http://blog.ine.com/2011/04/04/understanding‐ospf‐external‐route‐path‐selection/
[3] Keeping it classless,2011, Retrieved from: http://keepingitclassless.net/2011/07/eigrp‐feasible‐successors/