MiaoLing Cho, AbdurRahman Hamadah, David Lee, Angelica Perin,

1
Design of a Virtual Private Network over a SONET
System
Miao-Ling Cho, Abdur-Rahman Hamadah, David Lee,
Angelica Perin, Ahmed Fowad Usmani Juan
Velasco
djl019300_at_utdallas.edu, mxc034100_at_utdallas.edu,
amp021000_at_utdallas.edu, axh043000_at_utdallas.edu,
hola_at_utdallas.edu, afu031000_at_utdallas.edu
Department of Electrical Engineering Erik Jonsson
School of Engineering Computer
Science University of Texas at Dallas Richardson,
Texas 75083-0688, U.S.A.
Project Goals
Project Results

• Goal 1
• Design an enterprise network capable of data
  transmission over fiber optic link
• Goal 2
• Research configuration syntax to allow multi-site
  VPN across the network
• Goal 3
• Configure routers to enable MPLS VPN

• Applied logical addressing to network
• Configured provider edge (PE) routers with MPLS
  VPN to enable tag switching for VPN customers.
• Configured customer edge (CE) routers with OSPF
  to advertise customer network to the provider
  (ISP) network.
• Implemented VPN over SONET system
• Troubleshoot and assess errors in configuration
  syntax

Project Overview
Routing Protocols
Virtual Private Network

• Design
• The network was implemented using the hardware
  available in the TARGET lab. The hardware
  consisted of two CISCO 12000 routers , two CISCO
  6509 switches and three Cisco OC-48 (3-Node Ring).
  
• IP addressing was /24 consisting of 3 distinct
  networks.
• MPLS VPN was configured to route VPN traffic
  through the network
• Technical Approach
• We configured all interfaces to adhere to our
  logical addressing schema. Applied OSPF and BGP
  as primary routing protocols to route traffic end
  to end. Using MPLS we created a virtual routing
  and forwarding instance (VRF) to allocate VPN
  customers.
• Organization
• Our group worked as a whole to configure the
  network. Met on a weekly basis to test
  configuration and program equipment. In
  addition, the group worked together to
  troubleshoot the network.

Project Conclusions/Outcomes

• Modified original network configuration to
  implement MPLS VPN rather than IPSEC due to IOS
  version discrepancies.
• Could not complete final network communication
  between Gigabit Ethernet to POS interface on PE
  routers due to time constraints.
• Tested successful communication between CE PE.
• Tested successful communication between PE PE.
• Efficient group communication and distribution of
  work