Task A - Network Simulation Models/Simulations

Scenario:

Create the program in comnet and take the screenshots as mentioned below in technical report part.

A Mythical company namely Asia bank is a multinational bank with headquarters in Edinburgh.ThebankiswillingtosetuptwoATM(AutomaticTellerMachines) transactionnetworkinNepal.ThetwolocationsinNepalareItahariandButwal. Each network in Nepal consists of 30 ATM transaction nodes plus one single teller givingatotalof31ATMseachinaLAN.NepalLANissetupusingIEEE802.3

CSMA/CD 10 BaseT Ethernet network. The Edinburgh LAN is also setup using IEEE

802.5 16 Mbps token passing standard with an ATM processing server. Each LANs are connected to the frame relay cloud through a cisco 7010sp, V10.0 router. The tunnel from the LAN to WAN and links in the WAN have a transmission rate of 16

Kbps. The tunnel from the WAN to the LAN has transmission rate of 128 kbps.

An Estimate is made to support a busy peak of ATM device usage which generates

2 transactions per minute in each ATM. This can be described with an interarrival time with exponential distribution 0.5 with stream 2. The size of ATM authorization requestscanbedescribedbyauniformdistributionwherethesizeisevenly dispersedovertherangeof50to100byteswithstream2.All ATMrequestsare processed at the London server that responds with a message that can be explained with uniform probability distribution where the size is evenly dispersed over the range of 40 to 80 bytes with stream 2. The single teller machines in each LANs (Itahari and Butwal)are generated at an interarrival time that can be defined with an exponential probabilitydistributionwithmean10whichhasasizethatcanbeexplainedbya uniform distribution where the size is evenly dispersed over the range of 40 to 100 bytes. For the destination list of message source and message response you need to generate random list with respective destination.

The routing protocol used is TCP-IP Microsoft V1.0 with 10 ms Packetize time. All systems use the routing class defined with a hop count of 65535 with IGRP metric weight (k1) = 1 .

you are required to test the designed model from SECTION A by simulation with warmup length of 0 seconds, Number of replication: 1, Replication length (seconds): 60 and submit a technical report which includes:

(please take the screenshots)

1.Implementation of the scenario

2.Description of the WAN model

3.Discussion on the following reports:

a.Node reports: Received message counts for all nodes

b.Link reports: channel utilization for all links

c.WANcloudreports:FrameDelaybyVC,FramecountbyVC,and access link stats

d.Message and Report response: Message delay for all nodes.