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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Troubleshooting Procedure

Troubleshooting Procedure

NOTE:

Saving the results of each troubleshooting step is recommended. If troubleshooting fails to correct the fault, you will have a record of your actions to provide Huawei technical support personnel.

Procedure

  1. Check that a link is set up successfully.

    Run the display isdn call-info command to check the call status.

    • If no information is displayed, the PRI interface is not created. Create a PRI interface.
    • If the value of State in the command output is TEI_ASSIGNED or AWAITING_ESTABLISHMENT, the link is not set up. Rectify the fault according to Link Failed to Be Established on ISDN Interfaces.
    • If the value of State in the command output is MULTIPLE_FRAME_ESTABLISHED, the link has been set up. Go to step 2.

  2. Check that the DCC configurations are correct.

    Run the display this command in the serial interface view or dialer interface view to check the following interface configurations:

    • Whether the dialer rule is configured and whether the dialer rule number is the same as the dialer group number
    • Whether the dialer number is correct if the dialer number mode is used
    • Whether the IP address is correct if the dialer route IP mode is used
    NOTE:

    Before using the display this command in the series interface view, run the display device command to check the slot ID of E1/T1-M card, which is the slot ID of the serial interface.

    If the preceding configurations are incorrect, re-configure the DCC parameters. If they are correct, run the debugging dialer all, debugging isdn cc, debugging isdn q931, terminal debugging, and terminal monitor commands to check whether DCC triggers a call.

    • If the command outputs do not contain DCC debugging information, DCC does not trigger a call. Restart the AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600.
    • If the command outputs contain DCC debugging information, DCC has triggered a call, but the call may be failed. Go to step 3.

    The DCC debugging information is as follows:

    <Huawei>
    Oct 14 2007 09:07:40.760.1+08:00 AR2220 DCC/7/debug:DCC: try to find routing to '4.4.4.2' on interface Dialer1
    Oct 14 2007 09:07:40.760.2+08:00 AR2220 DCC/7/debug:DCC: the packet is interesting.
    Oct 14 2007 09:07:40.760.3+08:00 AR2220 DCC/7/debug:DCC: DCC_ProcPktForDialNum called...
    Oct 14 2007 09:07:40.760.4+08:00 AR2220 DCC/7/debug:DCC: DCC_ProcDialPktNoLink: Dial to the remote host
    Oct 14 2007 09:07:40.770.1+08:00 AR2220 DCC/7/debug:DCC: Try to find a free channel to dial '012345678901234567890123456789' on the interface Dialer1 
    Oct 14 2007 09:07:40.770.2+08:00 AR2220 DCC/7/debug:DCC: Dialing 012345678901234567890123456789 on interface Serial1/0/0:15 of interface Dialer1
    Oct 14 2007 09:07:40.770.3+08:00 AR2220 DCC/7/debug:DCC: DDR Dial :send DDR_CONN_REQ message successfully,sertype=8,IfIndex=0x9 
    Oct 14 2007 09:07:40.770.4+08:00 AR2220 DCC/7/debug:DCC: not set the queue! discard this packet 
    Oct 14 2007 09:07:40.780.1+08:00 AR2220 DCC/7/CC_Debug:                                                                              
    CC<-DDR : ISDN_CONN_REQ                                                                                                             
     CallID=0xffffffff UserID=0x2 PortID=0x9 ServiceType=0x8 Channel=0x2 IsCompleted=0x0 Cause=0x00 szCalledNum=01234567890123456789456789  
    
    <Huawei>
    Oct 14 2007 09:07:40.760.1+08:00 AR2220-S DCC/7/debug:DCC: try to find routing to '4.4.4.2' on interface Dialer1
    Oct 14 2007 09:07:40.760.2+08:00 AR2220-S DCC/7/debug:DCC: the packet is interesting.
    Oct 14 2007 09:07:40.760.3+08:00 AR2220-S DCC/7/debug:DCC: DCC_ProcPktForDialNum called...
    Oct 14 2007 09:07:40.760.4+08:00 AR2220-S DCC/7/debug:DCC: DCC_ProcDialPktNoLink: Dial to the remote host
    Oct 14 2007 09:07:40.770.1+08:00 AR2220-S DCC/7/debug:DCC: Try to find a free channel to dial '012345678901234567890123456789' on the interface Dialer1 
    Oct 14 2007 09:07:40.770.2+08:00 AR2220-S DCC/7/debug:DCC: Dialing 012345678901234567890123456789 on interface Serial1/0/0:15 of interface Dialer1
    Oct 14 2007 09:07:40.770.3+08:00 AR2220-S DCC/7/debug:DCC: DDR Dial :send DDR_CONN_REQ message successfully,sertype=8,IfIndex=0x9 
    Oct 14 2007 09:07:40.770.4+08:00 AR2220-S DCC/7/debug:DCC: not set the queue! discard this packet 
    Oct 14 2007 09:07:40.780.1+08:00 AR2220-S DCC/7/CC_Debug:                                                                              
    CC<-DDR : ISDN_CONN_REQ                                                                                                             
     CallID=0xffffffff UserID=0x2 PortID=0x9 ServiceType=0x8 Channel=0x2 IsCompleted=0x0 Cause=0x00 szCalledNum=01234567890123456789456789  
    

  3. Check that the network-side device sends response packets.

    Run the debugging dialer all, debugging isdn cc, debugging isdn q931, terminal debugging, and terminal monitor commands to check whether the network-side device sends response packets.

    • If the command outputs do not contain N->U, the network-side device does not send response packets. Restart the network-side device.
    • If the command outputs contain N->U, the network-side device has sent response packets. Go to step 4.

  4. Check whether the AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600 rejects the call.

    Various interaction packets are sent during the setup of an ISDN call. If the AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600 receives a packet of a wrong type, the AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600 rejects the call.

    Run the debugging dialer all, debugging isdn cc, debugging isdn q931, terminal debugging, and terminal monitor commands to check whether the AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600 rejects the call.

    • If the following information is displayed, the AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600 has rejected the call. Restart the AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600.

      <Huawei> Oct 14 2007 08:56:10.30.1+08:00 AR2220 DCC/7/CC_Debug:  
      CC <-DDR : ISDN_DISC_REQ 
      CallID=0x0 UserID=0x0 PortID=0x9 ServiceType=0x8 Channel=0x2 IsCompleted=0x0 Cause=0x00
      Oct 14 2007 08:56:10.30.2+08:00 AR2220 DCC/7/CC_Debug: 
      CC->Q931: PRIM_DISCONNECT_REQ 
       CCIndex=0x0 L3Index=0x1 PortID=0x9 CES=0x1 *cause=08 02 80 90     
      Oct 14 2007 08:56:10.40.1+08:00 AR2220 Q931/7/Q931_Debug: Serial1/0/0:15 
          U->N   DL_I_Data_Req  CES = 1
          cr= 01 01 DISCONNECT  *cause=08 02 80 90
      
      <Huawei> Oct 14 2007 08:56:10.30.1+08:00 AR2220-S DCC/7/CC_Debug:  
      CC <-DDR : ISDN_DISC_REQ 
      CallID=0x0 UserID=0x0 PortID=0x9 ServiceType=0x8 Channel=0x2 IsCompleted=0x0 Cause=0x00
      Oct 14 2007 08:56:10.30.2+08:00 AR2220-S DCC/7/CC_Debug: 
      CC->Q931: PRIM_DISCONNECT_REQ 
       CCIndex=0x0 L3Index=0x1 PortID=0x9 CES=0x1 *cause=08 02 80 90     
      Oct 14 2007 08:56:10.40.1+08:00 AR2220-S Q931/7/Q931_Debug: Serial1/0/0:15 
          U->N   DL_I_Data_Req  CES = 1
          cr= 01 01 DISCONNECT  *cause=08 02 80 90
      
    • If the command outputs do not contain the preceding information, the AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600 has accepted the call. Go to step 5.

  5. Check whether the network-side device rejects the call.

    Run the debugging dialer all, debugging isdn cc, debugging isdn q931, terminal debugging, and terminal monitor commands to check whether the network-side device rejects the call.

    • If the following information is displayed, the network-side device has rejected the call. Restart the network-side device.

      <Huawei> Oct 14 2007 09:40:38.10.1+08:00 AR2220 Q931/7/Q931_Debug: Serial1/0/0:15 
          N->U   DL_I_Data_Ind  CES = 1
          cr= 01 84 DISCONNECT  *cause=08 02 80 90  
      Oct 14 2007 09:40:38.10.2+08:00 AR2220 Q931/7/Q931_Debug:
       [FUN: ProcMsgDisconnect, LINE: 545] ISDN Layer 3 call state change:-> CS_DISCONNECT_INDICATION 
      Oct 14 2007 09:40:38.10.3+08:00 AR2220 DCC/7/CC_Debug:
      CC<-Q931: PRIM_DISCONNECT_IND
       CCIndex=0x3 L3Index=0x4 PortID=0x9 CES=0x1 *cause=08 02 80 90   
      
      
      <Huawei> Oct 14 2007 09:40:38.10.1+08:00 AR2220-S Q931/7/Q931_Debug: Serial1/0/0:15 
          N->U   DL_I_Data_Ind  CES = 1
          cr= 01 84 DISCONNECT  *cause=08 02 80 90  
      Oct 14 2007 09:40:38.10.2+08:00 AR2220-S Q931/7/Q931_Debug:
       [FUN: ProcMsgDisconnect, LINE: 545] ISDN Layer 3 call state change:-> CS_DISCONNECT_INDICATION 
      Oct 14 2007 09:40:38.10.3+08:00 AR2220-S DCC/7/CC_Debug:
      CC<-Q931: PRIM_DISCONNECT_IND
       CCIndex=0x3 L3Index=0x4 PortID=0x9 CES=0x1 *cause=08 02 80 90   
      
      
    • If the command outputs do not contain the preceding information, the network-side device has accepted the call. Go to step 6.

  6. Check that the protocol status of the data channel is Up.

    Run the display isdn active-channel command to check the activated data channel.

    <Huawei> display isdn active-channel                   
    Serial1/0/0:15                                                                              
    -------------------------------------------------------------------------------             
    Channel  Call     Call     Calling        Calling     Called         Called                 
    Info     Property Type     Number         Subaddress Number         Subaddress              
    -------------------------------------------------------------------------------            
    B26      Digital  Out      88888204           -        88888206           -
    

    Run the display interface serial 1/0/0:15 command to check the data channel corresponding to the call. If the protocol status is Line protocol current state : Up, the protocol status of the data channel is Up. Go to step 7.

    If the protocol status is Line protocol current state : DOWN, the protocol status of the data channel is Down. Rectify the fault according to Protocol Status of a PPP Interface Is Down.

  7. Collect the following information and contact technical support personnel.

    • Results of the preceding troubleshooting procedure
    • Configuration files, log files, and alarm files of the AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600

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Updated: 2019-05-10

Document ID: EDOC1000079719

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