I have a customer that is currently configured to use the same publically routable IP address with a static NAT translation and also in a PAT pool. I'm posting a short blurb of the output I'm seeing in the config. Does anyone know if this is possible and if so how it's working?
interface Loopback0
description Management loopback
ip address 168.162.58.99 255.255.255.255
!
interface Loopback1
description BGP loopback
ip address 10.128.33.228 255.255.255.255
!
interface Loopback3
description Used-for-NAT
ip address 168.162.103.81 255.255.255.240
!
interface FastEthernet0/0
ip address 12.176.226.51 255.255.255.0
ip nat outside
ip virtual-reassembly
speed 100
full-duplex
crypto map Customer_Access
!
interface FastEthernet0/1
description Customer_LAN
ip address 10.121.34.5 255.255.255.248
ip nat inside
ip virtual-reassembly
ip policy route-map fragment
speed 100
full-duplex
!
interface Async0/1/0
no ip address
encapsulation slip
!
router bgp 64614
no synchronization
bgp router-id 10.128.15.18
bgp log-neighbor-changes
network 168.162.58.99 mask 255.255.255.255
network 168.162.103.80 mask 255.255.255.240
neighbor 67.20.175.213 remote-as 7381
neighbor 67.20.175.213 ebgp-multihop 255
neighbor 67.20.175.213 update-source Loopback1
neighbor 67.20.175.213 soft-reconfiguration inbound
no auto-summary
!
no ip http server
no ip http secure-server
ip nat inside source list 90 interface Loopback3 overload
ip nat inside source static 38.252.82.186 168.162.103.82
ip nat inside source static 10.121.16.21 168.162.103.83
ip nat inside source static 10.121.16.8 168.162.103.84
ip nat inside source static 10.148.136.24 168.162.103.85
ip nat inside source static 10.148.136.25 168.162.103.86
ip nat inside source static 10.105.4.70 168.162.103.87
ip nat inside source static 10.153.80.69 168.162.103.88
ip nat inside source static 10.153.2.58 168.162.103.89
access-list 90 permit 38.252.82.186
access-list 90 permit 38.252.82.191
access-list 90 permit 10.121.16.0 0.0.0.255
access-list 90 permit 10.120.29.0 0.0.0.255
access-list 90 permit 10.121.34.0 0.0.0.7
interface Loopback0
description Management loopback
ip address 168.162.58.99 255.255.255.255
!
interface Loopback1
description BGP loopback
ip address 10.128.33.228 255.255.255.255
!
interface Loopback3
description Used-for-NAT
ip address 168.162.103.81 255.255.255.240
!
interface FastEthernet0/0
ip address 12.176.226.51 255.255.255.0
ip nat outside
ip virtual-reassembly
speed 100
full-duplex
crypto map Customer_Access
!
interface FastEthernet0/1
description Customer_LAN
ip address 10.121.34.5 255.255.255.248
ip nat inside
ip virtual-reassembly
ip policy route-map fragment
speed 100
full-duplex
!
interface Async0/1/0
no ip address
encapsulation slip
access-list 90 permit 38.252.82.186
access-list 90 permit 38.252.82.191
access-list 90 permit 10.121.16.0 0.0.0.255
access-list 90 permit 10.120.29.0 0.0.0.255
access-list 90 permit 10.121.34.0 0.0.0.7
