Simulation for a CentertoCenter Network

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Simulation for a Center-to-Center Network
Gregory Floyd ITS Engineer PB Farradyne
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Simulation for a Center-to-Center Network

• Introduction

C2C Network
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Network Simulation for Center-to-Center

• Center-to-Center Definition
• Need for Simulation
• An Approach

C2C Network
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Network Creation

• Nodes

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Network Creation

• Nodes

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Network Creation

• Nodes

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Network Creation

• Nodes

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Network Creation

• Nodes

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Network Creation

• TCL Scripting Language
• Multicast
• Unicast

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Network Creation

• Nodes
• Queues
• DropTail
• Red
• CPQ
• Others

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Network Creation

• Links
• Bandwidth
• Delay
• Type

Network
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Connection Creations

• UDP
• TCP
• FTP
• Telnet
• Web

Network
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Connection Creations

• Sample Script

• Create a simulator object
• set ns new Simulator
• ns rtproto DV
• Create a UDP agent and attach it to node n2
• set udp2 new Agent/UDP
• udp2 set class_ 1
• ns attach-agent n2 udp2

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Connection Creations

• Sample Script (cont.)

• Create a 3 Mb CBR traffic source and attach it
  to udp2
• set cbr2 new Application/Traffic/CBR
• cbr2 set packetSize_ 1000
• cbr2 set rate_ 3mb
• Connect the traffic sources with the traffic
  sinks
• ns connect udp8 null7

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Connection Creations

• Sample Script (cont.)

• ns at 0.2 "cbr2 start"
• ns at 0.3 "cbr8 start"
• ns at 4.0 "cbr2 stop"
• ns at 4.0 "cbr8 stop"
• Call the finish procedure after 5 seconds of
  simulation time
• ns at 5.0 "finish"

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Route Manipulation

• Simulating Link Failures

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Route Manipulation

• Simulating Link Failures

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Route Monitoring

• Nodes
• Queues

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Simulation for a Center-to-Center Network

• Questions ??

Gregory W. Floyd
Floyd_at_pbworld.com