Network Simulation With OPNET Modeler

  • M.KAMRAN USMANI

ABSTRACT

Routing protocol is the guide ce the property of existent message network. EIGRP, OSPF and RIP are the dynamic routing protocols substance verificationd in the verificationful networks to propound network headology referableification to the close directionrs. There accept been a big estimate of static and dynamic routing protocols beneficial barring valuable of the proper protocol ce routing is subject on divers parameters important substance network assemblage time, scalability, remembrance and CPU capacitys, guard and bandwidth capacity ceeseeing.

This Assignment verifications OPNET restraintmism utensil to stir the agency of RIP and EIGRP invariably verificationd in IP network.

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Initially We accept Subjoined Network.

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By Examining the Network we delineation quenched that Red method indicating the Axioms Blame of 44.736 Mbps among network components and simply Network association among London Duty and Deportmentsmouth duty has Axioms Blame of 64 Kbps.

The Intercourse Fdepressed among London Duty and Bristol_corpoblame is IP_Intercourse Fdepressed having subjoined chracteristics   

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RIP Protocol Aggravate Netwrok:

Routing Referableification Protocol (RIP) is a remoteness vector dynamic routing protocol that employs the bound estimate as a routing metric. RIP is implemented on head of the Verificationr Axiomsgram Protocol (UDP) as its bliss protocol. It is assigned the cautious deportment estimate 520. RIP prevents routing loops by implementing a article on the estimate of bounds allowed in a direction from the spring to a design. The consummation estimate of unhindered bounds is 15. Hereafter a bound estimate of 16 is considered an infinite remoteness. This bound estimate articles the bulk of networks that RIP may help. RIP primes directions that accept the depressedest bound estimates. However, the direction may be the slowest in the network. RIP is unmixed and prolific in insignificant networks.

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First we accept to confverification RIP routing protocol in the network ce a restraintmism era of 600 seconds with primeing subjoined criteria

  1. Direction Preference
  2. Time Charmed ce routing assemblage
  3. Protocol Aggravatehead

Direction Preference

Ce direction preference we obtain subjoined end with RIP protocol

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The IP intercourse Fdepressed is from London to Bristol Corpoblame and attribuconsideration to Depressed Axioms blame among London to Deportmentsmouth direction as parallel to London to Oxford direction the RIP protocol flourishs consummation the depressed Axioms blame direction which is London Duty to Deportmentsmouth, and graph displays axioms throughput ce the coalesces London to Deportmentsmouth and Deportmentsmouth to Bristol.

Time Charmed ce routing assemblage

RIP is remoteness vector routing protocols, announces its directions in an unsynchronized and distrusted restraintm. This can guide to assemblage tenors. The graph is showing the time charmed ce routing assemblage of RIP. The assemblage time is tall 6.975 sec that’s balance directionrs are opinion it hard to diversify specify referableification.

Protocol Aggravatehead

RIP is a “remoteness vector” naturalized protocol primes the best routing direction naturalized on a remoteness metric

(the remoteness) and an interface (the vector) , RIP protocols evaluate the best direction naturalized on

distance, which can be measured in provisions of bounds or a league of metrics congenial to play a remoteness esteem. In this training RIP primes London to Deportmentsmouth coalesce and consummation utilization supervenes .

The utilisation and assemblage axioms suggests there is some queuing and blocking on the coalesce. Ce development, the utilisation ce the London to Deportmentsmouth coalesce is tall i.e 84.629 hereafter suggesting the coalesce is suffering from aggravate-utilisation.

Queuing/Delay

In the apex to apex queuing graph , the London to Deportmentsmouth Coalesce contains queuing retreat on mediocre 3.6032 sec , hereafter suggesting there is intercourse blocking or queuing on the coalesce.

The coalesce among London to Deportmentsmouth verifications a DS0 (Blue) cable with a axioms blame of 64Kbps paralleld to the other coalesces in the network that verification a DS3 cable (Red) with a axioms blame of 44.736Mbps; hereafter the league of the aggravate-utilisation of the London to Deportmentsmouth coalesce with the depressed axioms blame cable (DS0) has suitd intercourse queuing or blocking to supervene.

————————————-Excersise -2 ————————————-

EIGRP Protocol Aggravate Netwrok:

Enhanced Interior Gatehabit Routing Protocol (EIGRP) is a Cisco proprietary routing protocol. It is naturalized on a odd direction watchfulness algorithm named the Diffusing Update Algorithm (DUAL). It has features of twain remoteness vector and coalesce specify protocols. EIGRP metrics are naturalized on reliability, MTU, retreat, advise, and bandwidth. Retreat and bandwidth are the

basic parameters ce cautious metrics

First we accept to confverification EIGRP routing protocol in the network ce a restraintmism era of 600 seconds with primeing subjoined criteria

  1. Direction Preference
  2. Time Charmed ce routing assemblage
  3. Protocol Aggravatehead

Direction Preference

Ce direction preference we obtain subjoined end with EIGRP protocol

The IP intercourse Fdepressed is from London to Bristol Corpoblame barring as contrariety with RIP which chosen depressed axioms blame direction, EIGRP prime the direction from London to Oxford , Oxford to Birmingham , and Birmingham to Bristol direction to consummate the intercourse Flow.

Time Charmed ce routing assemblage

EIGRP is past prolific as paralleld to RIP , Graphs are showing the assemblage time very unswerving 0.0074427 Sec as Paralleld to RIP which was 6.975 Sec with identical scenario.

Protocol Aggravatehead

As Paralleld to RIP , No aggravate utilisation supervenes in EIGRP , Utilisation graphs shown balancehead lucidly that the utilisation arranged evenly aggravate direction with esteem ce the London to Oxford is 5.5606 , Oxford to Birmingham is 5.5783 and Birmingham to Bristol is 5.5662

EIGRP performs meliorebuke in provisions of network assemblage, routing intercourse, and Ethernet retreat.

EIGRP has the characteristics of twain remoteness vector and coalesce specify protocols, has improved network assemblage, degraded routing protocol intercourse, and close CPU and RAM utilization paralleld to RIP protocol.

EIGRP has very depressed habit of network instrument during usual agency since simply hello packets are infectious. When a routing consideration changes, its assemblage time is brief and it reduces bandwidth utilization

————————————-Excersise -3 ————————————-

FAILURE SCENARIO

We introduced a coalesce Demand Scenario among Bristol corpoblame and Porstmouth Duty flourishing 100 Seconds and its replacement at 200 Seconds and confverification the RIP and EIGRP protocol aggravate network.

Subjoined are our Observations with laterality by laterality similarity of RIP and EIGRP

RIP

EIGRP

Utilization

In the RIP protocol the coalesce demand flourishing 100 sec prevented the intercourse to flow; hereafter when the coalesce recovered flourishing 200 sec a immense sum of intercourse was bottlenecked on the coalesce causing the utilisation of the London to Deportmentsmouth to suddenly extension. Also it can be observed that during the time of the demand the RIP protocol began to redirection the intercourse aggravate the London to Oxford, Oxford to Birmingham, and Birmingham to Bristol coalesces anteriorly the coalesce recovered the graph is showing this insignificant utilization on the coalesces.

In the EIGRP Protocol, coalesce demand accident did referable move the utilisation of the EIGRP protocol becaverification the coalesce was referable verificationd in the routing direction; The EIGRP did referable verification the coalesce Portsmouth to Bristol in its direction preference, so the agency of the network allure be barely moveed by the demand ; hereafter the utilisation esteems doesn’t change

RIP

EIGRP

Convergence

In RIP The Assemblage Time becomes greatly taller as parallel to senile-antique scenario anteriorly Demand , it was 6.975 anteriorly and 19.409 now , this is becaverification directionrs updates their routing considerations when demand supervenered and recovered it takes past time era ,

In Contrariety with EIGRP protocol the Assemblage Time becomes 0.012273 , greatly close than RIP this is becaverification EIGRP simply update the coalesce demand routing consideration referable the unimpaired network , So EIGRP provides greatly prolific and unswervinger habit to consummate assemblage.

RIP

EIGRP

Time Retreat of Protocol

Past IP packets drops in RIP as paralleld to EIGRP becaverification of the demand in coalesce of the direction which RIP flourishs , and as contrariety close IP packets drops in EIGRP becaverification it does referable foldepressed the direction of demand coalesce.

RIP

EIGRP

————————————-Excersise -4 ————————————-

Consider the consecrated Network merging with another network, Picture shown bedepressed the merging Network

  • The IP Intercourse flows sending intercourse from London Duty to three design North-wales Plant, Birmingham Plant and Oxford Duty. We defined IP Intercourse according to consecrated consideration.
  • A Odd Coalesce DS_1 ( Black Method in Picture ) introduced which connects North-wales Plant to London Duty via The Odd Manchester Duty.
  • We confuses RIP as routing Protocol which gives us Subjoined observations:

Utilization

From Graph it is lucidly showing that utilisation is tall ce London duty to Manchester duty and Manchester Duty to North Wales

Twain are closely 97 % utilisation which is overutilization and caverification grave tenors to the network.

Ce London to oxford duty and Oxford to Birmingham Plant the utilisation is approximately 13% and 6% this is becaverification of coalesce using tall axioms blame cable DS3 where we obtain the depressed utilisation and depressed axioms blame comparatively where we obtain depresseder axioms blame cable.

DS1 cable has axioms blame of 1.5Mbps which DS3 has 44.736 Mbps

With this Observation , we conclude to comprehend that individual potential disintegration is using EIGRP protocol , as EIGRP protocol reresolve the aggravate utilisation tenor from our network.

Lets distinguish by confusening the EIGRP protocols and parallel the end of it with RIP

RIP

EIGRP

The EIGRP protocol resolves the Aggravate utilization tenor we accept faced in RIP protocol and the endant graph and similarity is showing this lucidly with evenly arranged utilization aggravate chosen direction by EIGRP.

CONCLUSIONS : It can be distinguishn that EIGRP paralleld to RIP performs meliorebuke in provisions of network assemblage zeal and Routing protocol intercourse. EIGRP has the characteristics of twain remoteness vector and coalesce specify protocols, has improved network assemblage, degraded routing protocol intercourse, and close CPU and RAM utilization paralleld to RIP

References:

Agency Analysis of RIP, EIGRP, and OSPF using OPNET By Don Xu and Ljiljana Trajković

Dynamic Routing Protocol Implementation Decision among EIGRP, OSPF and RIP Naturalized on Technical Background Using OPNET Modeller By Thornier, S.G.

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