Simulation of BGP Protocol Ahmad Salam AlRefai Wael F. Al Takrouri December 28, 2008 Using OPNET IT Guru Simulating Tool

Simulation of BGP using OPNet AlRefai & Al Takrouri 2 Outline Introduction Autonomous System Border Gateway Protocol OPNET IT Guru Simulation Procedure Conclusion Questions & Answers

Simulation of BGP using OPNet AlRefai & Al Takrouri 3 Introduction Simulation of Border Gateway Protocol using IT Guru as simulation tool. Measure the performance of BGP protocol of a baseline model (consists of no. of Autonomous Systems)

Simulation of BGP using OPNet AlRefai & Al Takrouri 4 Autonomous System Autonomous System (AS) is a group of routers that are typically under the same administrative control (operated by the same ISP or belonging to the same company )[1]. Routers within the same AS all run the same algorithm.

Simulation of BGP using OPNet AlRefai & Al Takrouri 5 Autonomous System (cont.) Three Autonomous Systems [2]

Simulation of BGP using OPNet AlRefai & Al Takrouri 6 Autonomous System (cont.) Each AS has one or more router(s) that are responsible communicating with other Ass and responsible for forwarding packets to destination these routers are called gateway routers or border routers. Each AS has a unique number that distinguishes it from other AS this number is called the autonomous system number or ASN

Simulation of BGP using OPNet AlRefai & Al Takrouri 7 Border Gateway Protocol Border Gateway Protocol or BGP is routing protocol for the internet. There are two forms of BGP, Interior Border Gateway Protocol or IBGP when it runs on same AS and Exterior Border Gateway Protocol when it runs on between different Autonomous Systems

Simulation of BGP using OPNet AlRefai & Al Takrouri 8 Border Gateway Protocol (BGP) Mainly BGP provide AS with methods to  Obtain subnet reachablitiy information form neighboring AS  Propagate the reachablitiy information to all router in a AS  Determine good routers to subnet based one the reachablitiy information and AS policy

Simulation of BGP using OPNet AlRefai & Al Takrouri 9 OPNET IT Guru OPNET IT Guru Academic 9.1 is selected as simulating tool Run Windows operating system Has many good features  Usability  Supporting large number of simulated devices  Speed of Simulation

Simulation of BGP using OPNet AlRefai & Al Takrouri 10 Simulation Procedure

Simulation of BGP using OPNet AlRefai & Al Takrouri 11 Simulation Procedure

Simulation of BGP using OPNet AlRefai & Al Takrouri 12 Simulation Result

Simulation of BGP using OPNet AlRefai & Al Takrouri 13

Simulation of BGP using OPNet AlRefai & Al Takrouri 14

Simulation of BGP using OPNet AlRefai & Al Takrouri 15

Simulation of BGP using OPNet AlRefai & Al Takrouri 16

Simulation of BGP using OPNet AlRefai & Al Takrouri 17 Slip8_gtwy

Simulation of BGP using OPNet AlRefai & Al Takrouri 18 PPP_DS3

Simulation of BGP using OPNet AlRefai & Al Takrouri 19 Router Naming

Simulation of BGP using OPNet AlRefai & Al Takrouri 20 After Arrangement

Simulation of BGP using OPNet AlRefai & Al Takrouri 21 Set Autonomous Number

Simulation of BGP using OPNet AlRefai & Al Takrouri 22 larger

Simulation of BGP using OPNet AlRefai & Al Takrouri 23 Set Autonomous Number

Simulation of BGP using OPNet AlRefai & Al Takrouri 24 Don’t Forget to … Check Apply Changes to Selected Objects

Simulation of BGP using OPNet AlRefai & Al Takrouri 25 Check Links

Simulation of BGP using OPNet AlRefai & Al Takrouri 26 Run

Simulation of BGP using OPNet AlRefai & Al Takrouri 27 Before you run

Simulation of BGP using OPNet AlRefai & Al Takrouri 28 Running

Simulation of BGP using OPNet AlRefai & Al Takrouri 29 Running

Simulation of BGP using OPNet AlRefai & Al Takrouri 30 Go to file and do refresh

Simulation of BGP using OPNet AlRefai & Al Takrouri 31 larger

Simulation of BGP using OPNet AlRefai & Al Takrouri 32 Open Generic Data file

Simulation of BGP using OPNet AlRefai & Al Takrouri 33 Select..

Simulation of BGP using OPNet AlRefai & Al Takrouri 34 larger

Simulation of BGP using OPNet AlRefai & Al Takrouri 35 Set Neighboring Information

Simulation of BGP using OPNet AlRefai & Al Takrouri 36 Edit Neighboring Infos

Simulation of BGP using OPNet AlRefai & Al Takrouri 37 You can set timer parameters

Simulation of BGP using OPNet AlRefai & Al Takrouri 38 Export Routing…

Simulation of BGP using OPNet AlRefai & Al Takrouri 39 larger

Simulation of BGP using OPNet AlRefai & Al Takrouri 40 Run for 30 Minutes

Simulation of BGP using OPNet AlRefai & Al Takrouri 41 For Routing table you can export

Simulation of BGP using OPNet AlRefai & Al Takrouri 42 We can now select statistics Right Click on Empty Place Choose Individual Statistics

Simulation of BGP using OPNet AlRefai & Al Takrouri 43

Simulation of BGP using OPNet AlRefai & Al Takrouri 44 Click View Results Button

Simulation of BGP using OPNet AlRefai & Al Takrouri 45 Some Results – overall

Simulation of BGP using OPNet AlRefai & Al Takrouri 46 Some Results – on R10

Simulation of BGP using OPNet AlRefai & Al Takrouri 47 Average and overlaid

Simulation of BGP using OPNet AlRefai & Al Takrouri 48 Simulation Log

Simulation of BGP using OPNet AlRefai & Al Takrouri 49 IP routing table/ choose router and see the routing table

Simulation of BGP using OPNet AlRefai & Al Takrouri 50 Routing table

Simulation of BGP using OPNet AlRefai & Al Takrouri 51 References [1] Kurose, Roos (2005) Computer Networking A top Down Approch Featuring The Internet : Pearson [2] [3] Laboratory 6: Border Gateway Protocol (BGP)