Troubleshooting guide

Cisco DSL Router – RFC1483 Pure Bridging
Your Internet Service Provider (ISP) has assigned you a bridged connection.
Tip: If you aren't familiar with configuring Cisco devices and would like to follow a step−by−step
configuration, click here.
Tasks to Perform
Manually configure PC clients with the information provided by your ISP.
IP addresses and subnet masks.♦
Default gateway.♦
Domain Name Server (DNS) IP addresses.♦
•
Configure no ip routing and bridge 1 protocol ieee on the Cisco Digital Subscriber
Line (DSL) Router.
•
Configure the ATM interface (the Asymmetric Digital Subscriber Line (ADSL) interface) with an
ATM permanent virtual circuit (PVC) and encapsulation.
•
Configure bridge−group 1 on the ATM and Ethernet interfaces.•
Note: When the Cisco DSL Router is in bridge mode, Network Address Translation (NAT) and Dynamic
Host Control Protocol (DHCP) server configurations are not supported.
Configuration
Tip: If you aren't familiar with configuring Cisco devices and would like to follow a step−by−step
configuration, click here.
Cisco DSL Router with RFC1483 Pure Bridging
!−−− Comments contain explanations and additional information.
service timestamps debug datetime msec
service timestamps log datetime msec
!
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
!
Cisco DSL Router Configuration and Troubleshooting Guide