INE3010 Lab2 Specification

Sprint 2003, Version 1.0

• Time: 24/4/2003 (Thu) 2:00pm - 5:00pm
• Venue: INE Computing Lab

After Lab1, the NSP network have been built. Now the NSP decided to connect to the other NSPs through the Internet exchange point (or national access point, NAP) in Hong Kong, Shanghai, Beijing and Chengdu. Each regional NSP network have to setup a POP (Point of Presence) to connected to the Internet exchange in your region.

Another service provider called Gateway have been setup to provide Internet access for the NSPs. Gateway have POPs connected to 4 Internet exchange. Their BGP AS number are 102 (HK), 202 (SH), 302 (BJ) and 402 (CD). You can access the CUHK and INE network through their Gateway POP.

In this lab, you have to:

• Advertise the routes in your NSP to other NSP through BGP so that they can reach your network through exchange point. However, each route advertised to the router server in IX should not smaller than a class C (256 hosts). In real Internet, the restriction is 8 class C (2048 hosts).
• Consolidate the routes advertise in BGP so that, through your POP, other NSP can reach
  • your core router,
  • internal network and enterpise network your region,
  • other hosts in your NSP
• Setup the POP connected to the exchange point (IX) in your region.
• Relocate the looking glass server to the NSP regional internal network.

1. For the BGP routes advertised from your core router and POP, explain your reason with example.
2. Investigate the route server and IX LAN in IX, explain the working principle of an exchange point and how it can be scaled with example such as BGP AS path and traceroute.
3. How BGP select the best path to a destination if it found more than one routes to reach the destination? Explain with examples.
4. Appendix: router config of the core router and POP.

• Show BGP status, routes
• Traceroute to other NSP and CUHK network
• Show looking glass