Dynamic NAT translates inside private addresses to a POOL of outside public addresses. Each inside host gets the next available public IP from the pool. No permanent mapping; each session may get a different public IP. This lab configures dynamic NAT on R2 with a pool of public addresses (192.0.2.10 through 192.0.2.20).
What you will learn
- The
ip nat poolcommand syntax - How to control which inside addresses translate with an ACL
- The difference between dynamic NAT and PAT (next lab)
- When pool exhaustion happens and what it looks like
What this lab does NOT cover
- NAT overload / PAT (next lab, ips-05) - shares one public IP across many internal hosts
- NAT pool with overload flag (best of both worlds)
Topology
Download the CCNA Base Topology .yaml
3 iol-xe routers + 1 alpine + 1 ioll2-xe managed switch + 1 unmanaged switch. The reusable foundation for the PingLabz CCNA Labs library.
