Incorrect negotiated IP address

[woter1832]

Hi,

I've had some browsing issues since upgrading my C897VAW's IOS image to 157-3.M1 so I've wiped my config and started again. I've got some basic settings in place, however, I can't get Internet access. I've turned on debug ppp negotiated and I'm seeing:

Di0 IPCP: Install negotiated IP interface address 172.20.27.196

Confirmed by:

C897VAW#sh ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
ATM0                       unassigned      YES NVRAM  administratively down down
Dialer0                    172.20.27.196   YES IPCP   up                    up
Ethernet0                  unassigned      YES NVRAM  up                    up
Ethernet0.101              unassigned      YES unset  up                    up
GigabitEthernet0           unassigned      YES unset  up                    up
GigabitEthernet1           unassigned      YES unset  up                    up
GigabitEthernet2           unassigned      YES unset  up                    up
GigabitEthernet3           unassigned      YES unset  up                    up
GigabitEthernet4           unassigned      YES unset  down                  down
GigabitEthernet5           unassigned      YES unset  up                    up
GigabitEthernet6           unassigned      YES unset  up                    up
GigabitEthernet7           unassigned      YES unset  up                    up
GigabitEthernet8           unassigned      YES NVRAM  administratively down down
Virtual-Access1            unassigned      YES unset  up                    up
Virtual-Access2            unassigned      YES unset  up                    up
Vlan1                      unassigned      YES unset  up                    up
Vlan10                     10.10.10.1      YES NVRAM  up                    up
Vlan50                     10.10.50.1      YES NVRAM  up                    up
Wlan-GigabitEthernet8      unassigned      YES unset  up                    up
wlan-ap0                   unassigned      YES NVRAM  up                    up

172.20.27.196 is a non-routable IP, so I really don't understand why my router is getting it. I have a static public IP address which is totally different.

I've tried using ip unnumbered Loopback0 in Dialer interface, but that produced loads of errors in the debug logs.

I believe I have copied across all the key parts from my old config, so I don't understand what I am doing wrong.

I rolled back to c800-universalk9-mz.SPA.153-3.M10.bin in the hope of the problem being with the new image, but the results are the same.

Any help would be greatly appreciated. 

Thanks

W.

P.S. running-config attached.

[Deepak Kumar]

Hi,

I am not sure how was last time working but it is advised to contact ISP and verify for any changes happen from ISP side. I was worked on the same case a year before ago.  ISP was given some public IP to user and dialer username and password. When we were tried to dialer got a private IP. So we were made some configuration as:

One loopback interface with Public IP which was supplied by ISP.

One default route to ISP private gateway (Dailer Interface).

one default route to ISP gateway IP (My public IP gateway).

NAT outside was configured with the loopback interface. 

Again, I am not sure, you have to contact your ISP for more details.

Regards,

Deepak Kumar