Troubleshooting guide

no ip routing
!
interface ethernet0
no shut
no ip directed−broadcast
bridge−group 1
!
interface atm0
no shut
no ip address
no ip directed−broadcast
no atm ilmi−keepalive
pvc <vpi/vci>
encapsulation aal5snap
!−−− Common PVC values supported by ISPs are 0/35 or 8/35.
!−−− Confirm your PVC values with your ISP.
!
bridge−group 1
!
bridge 1 protocol ieee
!
end
Troubleshoot Your Configuration
If your ADSL service is not working properly, see Troubleshooting Pure Bridging.
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Cisco DSL Router Configuration and Troubleshooting
Guide
RFC1483 Pure Bridging – Troubleshooting
Determine the Layer to Troubleshoot
There are many reasons why your Digital Subscriber Line (DSL) connection may not be functioning properly.
The goal of this section is to isolate the cause of the failure and repair it. The first troubleshooting step is to
determine which layer of your Asymetric Digital Subscriber Line (ADSL) service is failing. There are three
layers in which the failure can occur.
Layer 1 – DSL physical connectivity to your ISP's Digital Subscriber Line Access Multiplexer
(DSLAM)
•
Layer 2.1 – ATM connectivity•
Layer 2.2 – Point−to−Point Protocol over ATM (PPPoA), Point−to−Point Protocol over Ethernet
(PPPoE), RFC1483 Bridging, or RFC1483 Routing
•
Layer 3 – IP•
Cisco DSL Router Configuration and Troubleshooting Guide