Topology: provincial company---ne40---pc, EBGP protocol is enabled between NE40 and provincial company. NAT pool is X.X.X.1-----X.X.X.6/29. Private network segment address of NE40 cannot be distributed on public network.
Check configuration and it is correct. Use display nat session and it is found that session has been set up. PC cannot ping loopback address of provincial route, but BGP has distributed C-type address x.x.x.0/24 and one convergence route ip router x.x.x.0 255.255.255.0 null 0 has been set up. It is doubted that the address is not invalid. Configure the address of x.x.x.1/29 at internal network. Configure the address of x.x.x.2/29 at PC. The network can be accessed. The address is valid. It is required to distribute detailed route of network segment x.x.x.0/29. Set up ip router x.x.x.0 255.255.255.248 null 0 route and the problem is solved. It is concluded that detailed route of NAT pool should be distributed when enabling NAT at egress.
1. Configuration script is not correct.
2. NAT address is not distributed on public network.