Cisco Systems Router 1800 Series User Manual

 
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Chapter 13      Configuring Dial Backup and Remote Management   Configuring Dial Backup and Remote Management Through a V.92 Modem
Line Configuration
Perform these steps to configure the line on the V.92 modem, beginning in global configuration mode: 
 Command Purpose
Step 1line line-number  
Example:
Router(config)#  line 1
Router(config-line)
Identifies a specific line for configuration and 
enters...

 
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  Configuring Dial Backup and Remote Management Through a V.92 Modem 

CH A P T E R
 
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Troubleshooting
Use the information in this chapter to help isolate problems you might encounter or to rule out the router 
as the source of a problem. This chapter contains the following sections:
 Getting Started
 Before Contacting Cisco or Your Reseller
 ADSL Troubleshooting
 SHDSL Troubleshooting
 ATM Troubleshooting Commands
 Software Upgrade Methods
 Recovering a Lost...

 
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Chapter 14      Troubleshooting
  ADSL Troubleshooting
ADSL Troubleshooting
If you experience trouble with the ADSL connection, verify the following:
 The ADSL line is connected and is using pins 3 and 4. For more information on the ADSL 
connection, see the hardware guide for your router.
 The ADSL CD LED is on. If it is not on, the router may not be connected to the DSL access 
multiplexer (DSLAM)....

 
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Chapter 14      Troubleshooting
  ATM Troubleshooting Commands
ping atm interface Command
Use the ping atm interface command to determine whether a particular PVC is in use. The PVC does 
not need to be configured on the router to use this command. 
Example 14-1 shows the use of this 
command to determine whether PVC 8/35 is in use.
Example 14-1 Determining If a PVC Is in Use
Router# ping atm interface...

 
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Chapter 14      Troubleshooting
  ATM Troubleshooting Commands
     426 packets output, 46282 bytes, 0 underruns     0 output errors, 0 collisions, 2 interface resets
     0 output buffer failures, 0 output buffers swapped out
Router# show interface fastethernet 0
Ethernet0 is up, line protocol is up 
Hardware is PQUICC Ethernet, address is 0000.Oc13.a4db (bia0010.9181.1281)
Internet address is...

 
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Chapter 14      Troubleshooting
  ATM Troubleshooting Commands
show atm interface Command
To display ATM-specific information about an ATM interface, use the show atm interface atm 0 
command from privileged EXEC mode, as shown in 
Example 14-3.
Example 14-3 Viewing Information About an ATM Interface
Router# show atm interface atm 0Interface ATM0:
AAL enabled:  AAL5   AAL2, Maximum VCs: 23, Current VCCs:...

 
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Chapter 14      Troubleshooting
  ATM Troubleshooting Commands
debug atm Commands
Use the debug commands to troubleshoot configuration problems that you might be having on your 
network. The debug commands provide extensive, informative displays to help you interpret any 
possible problems. 
Guidelines for Using Debug Commands
Read the following guidelines before using debug commands to ensure appropriate...

 
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  ATM Troubleshooting Commands
debug atm events Command
Use the debug atm events command to display events that occur on the ATM interface processor and to 
diagnose problems in an ATM network. This command provides an overall picture of the stability of the 
network. The no form of this command disables debugging output.
If the interface is successfully communicating with...

 
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Chapter 14      Troubleshooting
  ATM Troubleshooting Commands
debug atm packet Command
Use the debug atm packet command to display all process-level ATM packets for both outbound and 
inbound packets. The output reports information online when a packet is received or a transmission is 
attempted. The no form of this command disables debugging output.
CautionBecause the debug atm packet command generates...