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Problem authenticating over PPP

phillip.ireland
Level 1
Level 1

Morning

I have a Cisco 877 ADSL Router which is experiancing problems connecting to my ISP.

According to my ISP the router is connecting just isnt trying to authenticate(Log in)

Below is the current config:

Router#

Router#sh ru

Building configuration...

Current configuration : 1235 bytes

!

version 12.4

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname Router

!

boot-start-marker

boot-end-marker

!

!

no aaa new-model

!

resource policy

!

ip subnet-zero

ip cef

!

!

!        

!

!

!

!

!

!

!

interface ATM0

no ip address

no ip redirects

no ip unreachables

no ip proxy-arp

ip route-cache flow

no atm ilmi-keepalive

dsl operating-mode auto

!

interface FastEthernet0

!

interface FastEthernet1

!

interface FastEthernet2

!

interface FastEthernet3

!

interface Vlan1

ip address x.x.x.x x.x.x.x

no ip redirects

no ip unreachables

no ip proxy-arp

ip route-cache flow

ip tcp adjust-mss 1452

!

interface Dialer0

ip address negotiated

no ip redirects

no ip unreachables

no ip proxy-arp

encapsulation ppp

ip route-cache flow

dialer pool 1

dialer-group 1

no cdp enable

ppp authentication chap callin

ppp chap hostname xxxx

ppp chap password 7 xxxx

!        

ip classless

ip route 0.0.0.0 0.0.0.0 Dialer0

!

no ip http server

no ip http secure-server

!

dialer-list 1 protocol ip permit

!

control-plane

!

!

line con 0

no modem enable

line aux 0

line vty 0 4

login

!

scheduler max-task-time 5000

end

On the front of the router i have a solid CD light and solid power light.

8 Replies 8

cadet alain
VIP Alumni
VIP Alumni

Hi,

post result of debug ppp authentication command.

Regards.

Alain.

Don't forget to rate helpful posts.

I am new to cisco would you be able to tell me what to do!

Hi,

Can you access CLI? I suppose so as you have posted the running config.

if so then in privileged mode( #) issue the following command:  debug ppp authentication

then try to connect again and you'll see debug messages on the screen, copy paste on this forum

Regards.

Alain.

Don't forget to rate helpful posts.

try to connect by rebooting the router or can i force the retry

Sorry guys

not rebooting but you can enter the debug command and then  try this:

int dial0

no encap ppp

encap ppp

Don't forget to rate helpful posts.

Run the debug command and then ran the no encap ppp and encap ppp command.

Still nothing on screen, doesn't look like its even attempting to authenticate

Hi,

are you connected with console cable or by telnet?

Don't forget to rate helpful posts.

Problem is now fixed

I setup the ATM0.1 point-to-point interface DOH!

Worked first time