dialer if problem

[a.hajhamad]

i have the following configuration:

controller SHDSL 0/0/0

dsl-group 0 pairs  0,1

  shdsl annex A

shdsl rate auto

!

!

!

interface ATM0/0/0

no ip address

no atm ilmi-keepalive

pvc 8/35

  encapsulation aal5snap

  pppoe-client dial-pool-number 1

!

!

interface Virtual-Template1

no ip address

!

interface Dialer1

mtu 1492

ip mtu 1492

ip address negotiated

no ip redirects

no ip unreachables

no ip proxy-arp

ip virtual-reassembly

encapsulation ppp

ip tcp adjust-mss 1452

dialer pool 1

ppp authentication pap callin

ppp pap sent-username 'username' password 0 'password'

!

!

the controller interface is UP and i got the following PPP error while debug:

Vi2 PAP: I AUTH-NAK id 2 len 26 msg is "Authentication failed"

the username and password are correct.

IOS: c2800nn-entbasek9-mz.151-1.t3.bin

any ideas?

thanks in advance

[Konstantin Dunaev · Accepted solution]

do you use RADIUS authentication server? what does it say in log?

activate additional debaug "ppp authen" "ppp negotia" "aaa authent"

but your error is quite obvious - you have username/password problems. check if you don't have any "space" characters in password or somwthing like this.

[a.hajhamad]

Hi,

Thank you for your response.

Yes, the problem is solved by the ISP since we upgraded the line from 2 Mbps to 4 Mbps (new line), it needs a reset by the ISP since it logged the old physical interface ID (2 Mbps).

Thanks again