Checking Whether the Authentication Modes Are Correct

Procedure

Run the debugging ppp all command to check whether the authentication modes at the two ends are the same.

<Huawei> debugging ppp all
<Huawei>
May 27 2016 08:39:45.836.1+00:00 Huawei PPP/7/debug2:                            
  PPP Packet:                                                                    
      Dialer0:0 Input  LCP(c021) Pkt, Len 22                                    
      State ackrcvd, code ConfReq(01), id 2, len 18                              
      MRU(1), len 4, val 05d4                                                    
      AuthProto(3), len 4, PAP c023       //The PPPoE server uses the PAP authentication
      MagicNumber(5), len 6, val a0588ab6  
<Huawei>
May 27 2016 08:39:45.836.3+00:00 Huawei PPP/7/debug2:                            
  PPP Packet:                                                                    
      Dialer0:0 Output LCP(c021) Pkt, Len 17                                    
      State ackrcvd, code ConfNak(03), id 2, len 13                              
      MRU(1), len 4, val 05dc                                                    
      AuthProto(3), len 5, CHAP c22305   //The client uses the CHAP authentication

If not, change the authentication mode on the PPPoE client. Ensure that the authentication modes on the PPPoE client and PPPoE server are the same.

PAP authentication

<Huawei> system-view
[Huawei] interface dialer 0
[Huawei-Dialer0] ppp pap local-user huawei password cipher huawei123

CHAP authentication

<Huawei> system-view
[Huawei] interface dialer 0
[Huawei-Dialer0] ppp chap user huawei
[Huawei-Dialer0] ppp chap password cipher huawei123

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