Core Issue
Troubleshoot Network Address Translation (NAT) issues without including any IP routing protocol information. This is also true for Policy-Based Routing (PBR) and Hot Standby Router Protocol (HSRP) issues.
Resolution
NAT allows a single device, such as a router, to act as an agent between the Internet (or public network) and a local (or private) network.
NAT issues are independent of IP routing protocol and do not need any information on routing protocol to troubleshoot them. To help this tool identify and troubleshoot NAT issues correctly, do not select any IP routing protocol (such as Open Shortest Path First Protocol (OSPF), Border Gateway Protocol (BGP), or Enhanced Interior Gateway Routing Protocol (EIGRP)).
