Incorrect negotiated IP address on Dialer interface

[woter1832]

Hi,

Reposting, for some reason the last one was marked as spam and there is no link to report as not as spam.

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.

[woter1832]

Hi @Deepak Kumar,

Your reply seems to be blank?

T, W.

[Richard Burts]

I have a couple of points

1) You mention that you have a public IP. Where was it applied?

2) If the public IP was on the dialer, has the dialer always used address negotiated?

3) since the dialer is essentially a point to point connection from your router to the provider it may not be significant that it is a non-routable address

4) your nat uses ACL 101. but I am not finding ACL 101 in the config

HTH

Rick

[woter1832]

Apologies, BrokenConfig.txt attachement was missing the line:

ppp chap hostname SomeUser@plusdsl.net

Under Interface Dialer0

(This isn't the solution, it's always been in there on the router's running-config, I must have inadvertently removed it when obfuscating the attachment).

Thanks

[woter1832]

Firstly, thank you to everyone that tried to help. Some people are beyond help, and today I've fallen into that category. I owe you an apology for wasting your time.

Somehow I had managed to remove the line:

ppp chap hostname SomeUser@plusdsl.net

According to the PuTTY logs, some time between 2am and 4am!

Thanks again and sorry.

[Richard Burts]

TW

Thanks for posting back to the forum to let us know that you have solved your own problem. It is helpful to know that.

HTH

Rick