How to Start ISP Protocols Projects Using NS2

To create an  ISP Protocol projects using NS2 (Network Simulator 2),  has concentrate the typically on replicating Internet Service Provider (ISP) network functionalities, such as routing, traffic management, Quality of Service (QoS), and protocol performance.

Steps to Start ISP Protocols Projects Using NS2

ISP networks involve:

  1. Routing Protocols: The routing protocols for contains the EGP (Exterior Gateway Protocol), BGP (Border Gateway Protocol), OSPF.
  2. Traffic Control: Assure the congestion prioritization and load balancing.
  3. Performance Metrics: Study the performance for throughput, packet loss, delay, and jitter.

Steps to Start ISP Protocol Projects in NS2

  1. Set Up the NS2 Environment

Assure the NS2 is installed and process for the system.

  • Install NS2 on Ubuntu/Linux:

sudo apt-get update

sudo apt-get install ns2 nam xgraph

  • Verify:

ns

If successful, you will see the % prompt.

  1. Plan the ISP Network Topology

Model the multi-tiered network for signify the ISP infrastructure:

  • Core Network: The key network has includes the high-bandwidth backbone connection.
  • Access Network: It connected the end-users or customer nodes for the ISP routers.
  • Routing Protocol: It choose the path for execute in BGP or OSPF.
  • Traffic Management: Use the traffic with TCP/UDP through QoS.
  1. Create the NS2 TCL Script

Below is an sample of script for replicate the ISP network using static routing and traffic congestion.

ISP Protocol Simulation Script

# Initialize the Simulator

set ns [new Simulator]

set tracefile [open isp_trace.tr w]

$ns trace-all $tracefile

set namfile [open isp_nam.nam w]

$ns namtrace-all $namfile

# Define Colors for Visualization

$ns color 1 Blue

$ns color 2 Red

$ns color 3 Green

# Create Nodes for ISP Topology

set core1 [$ns node]

set core2 [$ns node]

set access1 [$ns node]

set access2 [$ns node]

set user1 [$ns node]

set user2 [$ns node]

# Define Links with Bandwidth and Delay

$ns duplex-link $core1 $core2 10Mb 5ms DropTail

$ns duplex-link $core1 $access1 5Mb 10ms DropTail

$ns duplex-link $core2 $access2 5Mb 10ms DropTail

$ns duplex-link $access1 $user1 2Mb 15ms DropTail

$ns duplex-link $access2 $user2 2Mb 15ms DropTail

# Label Nodes for Clarity

$core1 label “ISP Core 1”

$core2 label “ISP Core 2”

$access1 label “Access Router 1”

$access2 label “Access Router 2”

$user1 label “Customer 1”

$user2 label “Customer 2”

# Configure Static Routing (For simplicity)

$core1 add-route $core2 1

$core2 add-route $core1 1

$access1 add-route $user1 1

$access2 add-route $user2 1

# Add Traffic Generators

set tcp1 [new Agent/TCP]

set sink1 [new Agent/TCPSink]

$ns attach-agent $user1 $tcp1

$ns attach-agent $user2 $sink1

$ns connect $tcp1 $sink1

set ftp1 [new Application/FTP]

$ftp1 attach-agent $tcp1

# Schedule Traffic

$ns at 1.0 “$ftp1 start”

$ns at 4.0 “$ftp1 stop”

# Finish Procedure

proc finish {} {

global ns tracefile namfile

$ns flush-trace

close $tracefile

close $namfile

exec nam isp_nam.nam &

exit 0

}

# Run Simulation

$ns at 5.0 “finish”

$ns run

  1. Run the Simulation
  1. Store the script as isp_protocol_simulation.tcl.
  2. Process for the script using NS2:

ns isp_protocol_simulation.tcl

  1. Outputs:
    • Trace file: isp_trace.tr (for performance analysis).
    • NAM file: isp_nam.nam (animation of packet flow and routing).
  1. Analyze the Results

Metrics to Analyze:

  1. Packet Delivery Ratio (PDR): Use an AWK script:

awk ‘BEGIN {sent=0; received=0}

{if ($1==”s”) sent++; if ($1==”r”) received++}

END {print “PDR:”, received/sent*100 “%”}’ isp_trace.tr

  1. End-to-End Delay: Measure the average delay from forward and received packet timestamps.
  2. Throughput: Estimate the data received at the destination over time.
  3. Routing Efficiency: Check the control overhead for the trace file.
  1. Extend the Project

Here are ideas for extending your ISP protocol simulation:

  1. Dynamic Routing:
    • Execute the dynamic path for choose the BGP (Border Gateway Protocol) or OSPF.
    • Use the dynamic routing for rtproto:

$ns rtproto BGP

  1. QoS Management:
    • Prioritize are some congestion flows using CBQ (Class-Based Queuing) or RED (Random Early Detection) for congestion control.
  2. Traffic Models:
    • Enhance for the CBR, FTP, or VoIP-like traffic in validate for ISP network.
  3. Performance Comparison:
    • It associates the routing protocols for sample Static, BGP, OSPF according to latency, throughput, and packet delivery ratio.
  4. Fault Tolerance:
    • Replicate the node/connection failures and examine the path recovery times.
  1. Document the Results

The project report should include:

  1. Network Topology: Diagram display the key, assign, and customer nodes.
  2. Simulation Parameters:
    • It replicates for the parameter metrics such as Link bandwidth, delays, traffic rates, and node setting.
  3. Performance Analysis:
    • It analysis for performance for PDR, latency, throughput, and routing overhead.
  4. Comparative Study:
    • Various associate the routing protocols for instance Static Routing vs BGP.
  5. Conclusions:
    • Performance and reliability monitor for the ISP network.

In the entire page was successfully demonstrated the complete procedure to implement the ISP protocol that was executed using ns2 simulation tool. Any queries related to this project will be clarified in a different manual.