Troubleshooting guide
Table of Contents
Cisco DSL Router Configuration and Troubleshooting Guide
Is the circuit tested/provisioned correctly?......................................................................................89
Layer 2 Issues........................................................................................................................................89
Do you have the correct Permanent Virtual Circuit (PVC) values (VPI/VCI)?.............................89
Can you ping the default gateway from your PC?..........................................................................90
Is the bridge port in a forwarding state?..........................................................................................91
Is there an entry in the bridge table?...............................................................................................92
Related Information...............................................................................................................................92
Contact the Cisco Technical Assistance Center.....................................................................................92
RFC1483 Pure Bridging Online Form..................................................................................................93
Record Information from the ISP..........................................................................................................93
Choose Your Next Step.........................................................................................................................94
Step−by−Step Configuration of RFC1483 Routing with a Block of Static IP Addresses.....................94
Step−by−Step Configuration.................................................................................................................94
Connect the Cisco DSL Router and Your PC.................................................................................94
Start and Set Up HyperTerminal.....................................................................................................95
Clear Existing Configurations on the Cisco DSL Router................................................................95
Configure the Cisco DSL Router....................................................................................................96
View Your Configuration................................................................................................................97
Configuration.........................................................................................................................................97
Troubleshoot Your Configuration..........................................................................................................98
RFC1483 Routing with a Single Static IP Address...............................................................................98
Tasks to Perform....................................................................................................................................98
Configuration.........................................................................................................................................99
Troubleshoot Your Configuration........................................................................................................100
RFC1483 Routing with a Block of Static IP Addresses......................................................................100
Tasks to Perform..................................................................................................................................100
Configuration.......................................................................................................................................101
Troubleshoot Your Configuration........................................................................................................101
RFC1483 Routing Implementation Options........................................................................................102
Step−by−Step Configuration of RFC1483 Routing with a Single Static IP Address..........................102
Step−by−Step Configuration...............................................................................................................102
Connect the Cisco DSL Router and Your PC...............................................................................102
Start and Set Up HyperTerminal...................................................................................................103
Clear Existing Configurations on the Cisco DSL Router..............................................................103
Configure the Cisco DSL Router..................................................................................................104
View Your Configuration..............................................................................................................105
Configuration.......................................................................................................................................106
Troubleshoot Your Configuration........................................................................................................107
RFC1483 Routing – Troubleshooting..................................................................................................107
Determine the Layer to Troubleshoot..................................................................................................107
Layer 1 Issues......................................................................................................................................108
Is the carrier detect (CD) light on the front panel of the Cisco DSL Router on or off?................108
Is your ISP using a DSLAM that supports the Alcatel chipset?...................................................108
Is the DSL port on the back of the Cisco DSL Router plugged into the DSL wall jack?.............108
Is the ATM interface in an administratively down state?.............................................................108
Is the cable pinout correct?............................................................................................................108
Do you have the correct power supply for the Cisco 827?...........................................................109
Cisco DSL Router Configuration and Troubleshooting Guide
v