[R4] Connecting Two Ports

New Concepts: Connecting an egress port to an ingress port
Review:
• xxx
Description:
Two ports on the same NSP can be connected with a link. This approach is sometimes used for adding a convenient monitoring point and at other times used to make a single NSP look like two NSPs. (In this exercise, we will be creating a link between two different ports, but you can also create a connection between the same port.)

Instructions:

• Start the RLI again, and begin by adding a cluster (File => Topology => Add Cluster). At this point, all settings have default values, and all ports are identically configured. Setup routing such that any packet coming from the host(s) attached to ports 1, 2 or 3 first go to port 7, out from port 7 onto a link attached to port 6, and then to the port attached to the destination host. For example, a packet from host n1p1a destined for n1p2 should go through the GigE switch, into port 1, out port 7 onto the link to port 6, then to port 2, and finally to n1p2. Answer Questions 1 and 2.
• Save the current configuration to the file mycfg-1nsp-loop.exp.
• Add a monitoring panel labeled Ports 2 and 3 that will display four bandwidth plots:
  • Bandwidth coming into ports 2 and 3
  • Bandwidth going out of ports 2 and 3
• Add a second monitoring panel called Ports 7 and 6 that will display two bandwidth plots:
  • Bandwidth going out of port 7 and into port 6
• Save the configuration file.
• Ping n1p2 from n1p3. Answer Question 3.
• Modify the routing table(s) so that the returning ping packet (ICMP echo reply) goes directly from n1p2 to n1p3 instead of going through port 7. Answer Question 4.
Questions:
1. What are the contents of the routing tables at ports 1-3 and 6-7?
2. Are your route tables the most compact; i.e., contain the smallest number of entries? If not, what should be in the route tables to provide the correct functionality but minimizes the number of route entries?
3. Submit screen shots of the traffic displays, and explain why these displays demonstrate that your routing tables are correct.
4. What change(s) did you make to route tables? Submit screen shots of the traffic displays, and explain why these displays demonstrate that your routing tables are correct.