cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
2028
Views
0
Helpful
6
Replies

PPPoE over ADSL "PPPoE: No session found" error

denzilstephens
Level 1
Level 1

Hi all,

I am trying to configure PPPoE over ADSL but the PPPoE session is not coming up. I am receiving the following from PPPoE debug:

Jul  7 23:18:11.691:  padi timer expired

Jul  7 23:18:11.691: Sending PADI: vc=0/38

Jul  7 23:18:11.711: PPPoE 0: I PADO  R:8843.e19d.461b L:0019.5539.28ac 0/38  ATM0/1/0.38

Jul  7 23:18:11.711: PPPoE: No session found

router#show pppoe session

     1 client session

Uniq ID  PPPoE  RemMAC          Port                  Source   VA         State

           SID  LocMAC                                         VA-st

    N/A      0  0000.0000.0000  ATM0/1/0.38           Di1      N/A        PADISNT

                0000.0000.0000  VC:  0/38

interface ATM0/1/0

description ADSL2

no ip address

ip virtual-reassembly

no atm ilmi-keepalive

bundle-enable

!

interface ATM0/1/0.38 point-to-point

atm route-bridged ip

pvc 0/38

  oam-pvc 0

  pppoe-client dial-pool-number 1

!

!

interface Dialer1

ip address negotiated

no ip redirects

no ip proxy-arp

ip mtu 1486

ip virtual-reassembly

encapsulation ppp

ip tcp adjust-mss 1452

dialer pool 1

dialer-group 1

no cdp enable

ppp authentication pap callin

ppp chap hostname hostname

ppp chap password 0 password

ppp pap sent-username hostname password 0 password

ppp ipcp dns request accept

ppp ipcp route default

ppp ipcp address accept

Any idea what the issue might be. Any help would be very much appreciated.

6 Replies 6

Peter Paluch
Cisco Employee
Cisco Employee

Hello Denzil,

No exact idea as to what exactly might be your problem, but let's try starting with removing unnecessary commands and seeing if that has a positive effect:

  • Remove the bundle-enable from your ATM0/1/0 interface
  • Remove the atm route-bridged ip from your ATM0/1/0.38 subinterface

If that does not help please include the full output from the following debugs (activated simultaneously):

debug pppoe errors

debug pppoe events

debug pppoe packets

Thank you!

Best regards,

Peter


Thanks Peter,

I have removed those two lines of config.

This is the full output of the three debug commands:

Jul  7 23:37:35.703:  padi timer expired

Jul  7 23:37:35.703: Sending PADI: vc=0/38

Jul  7 23:37:35.703: pppoe_send_padi:

         00 01 09 00 AA AA 03 00 80 C2 00 07 00 00 FF FF

         FF FF FF FF 00 19 55 39 28 AC 88 63 11 09 00 00 ...

Jul  7 23:37:35.723: PPPoE 0: I PADO  R:8843.e19d.461b L:0019.5539.28ac 0/38  ATM0/1/0.38

         00 19 55 39 28 AC 88 43 E1 9D 46 1B 88 63 11 07

         00 00 00 70 01 05 00 38 00 00 0D E9 01 19 74 ...

Jul  7 23:37:35.723: PPPoE: No session found

Denzil,

Hmm, that's strange. What is the exact router's type and IOS version please? Do you have another ADSL modem/router to try to connect to the very same line and see whether it is able to connect successfully?

Best regards,

Peter

c1841-advipservicesk9-mz.124-24.T5.bin

HWIC-1ADSL-M

I have also run debug on the core router and receive:

Jul 24 22:59:40.533: PPPoE 0: I PADI  R:0019.5539.28ac L:ffff.ffff.ffff 600 Gi0/0.600

Jul 24 22:59:40.533:  Service tag: NULL Tag

Jul 24 22:59:40.533: PPPoE 0: O PADO, R:8843.e19d.461b L:0019.5539.28ac 600 Gi0/0.600

Jul 24 22:59:40.533:  Service tag: NULL Tag

I am also starting to wonder if the hardware/IOS don't work together.

Many thanks again Peter

Hello Denzil,

Do you have an option of capturing the traffic exchanged between the 1841 and your core router? Having a close look at the PPPoE packets could reveal more what is going on. The debugs use only abbreviated output which does not contain the entire packet contents.

Best regards,

Peter

Ok thanks Peter, will see what i can do.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: