Day 18 Lab 2 – NAT Pool

Topology

Instructions

Connect two routers together with a serial or crossover cable:

1. Add IP addresses to the routers and a Loopback interface on Router A, according to the diagram
2. Designate NAT inside and outside interfaces
3. Add a static route on Router B to send all traffic back to Router A
4. Ping between Router A and Router B to test the serial line (remember clock rates)
5. Create a NAT pool of 10.1.1.1 to 10, inclusive
6. Create two ACL lines to permit the Loopback networks (/16)
7. Configure the NAT pool, using the defined pool and ACL
8. Turn on NAT debugging
9. Source two extended pings, one each from L0 and L1
10. Check the NAT translation table

Solution Hints and Commands

• ip nat inside command and ip nat outside command on the interfaces
• ip route global configuration command to add static route
• ip nat pool name <start_ip> <end_ip> netmask <mask> command
• access-list x permit y.y.y.y command
• ip nat inside source list x pool <name> command
• debug ip nat [detailed] command
• show ip nat translations command to check the NAT translation table