Troubleshooting guide

Alternatively, if you want the Cisco DSL Router to assign your PC clients' dynamic IP addresses,
configure each PC to obtain an IP address and DNS server(s) automatically via DHCP.
Note: When an ATM interface is configured with ip unnumbered ethernet0, Network Address
Translation (NAT) configuration is 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 a Block of Static IP Addresses
!−−− Comments contain explanations and additional information.
service timestamps debug datetime msec
service timestamps log datetime msec
ip subnet−zero
!
ip dhcp excluded−address <ip address of ethernet0>
ip dhcp pool <dhcp pool name>
network <ip network address of ethernet0> <subnet mask>
default−router <ip address of ethernet0>
dns−server <ip address of dns server>
!
interface ethernet0
no shut
ip address <ip address> <subnet mask>
no ip directed−broadcast
!
interface atm0
no shut
no ip address
no ip directed−broadcast
no atm ilmi−keepalive
!
interface atm0.1 point−to−point
ip unnumbered ethernet0
pvc <vpi/vci>
encapsulation aal5snap
!−−− Common PVC values supported by ISPs are 0/35 or 8/35.
!−−− Confirm your PVC values with your ISP.
!
!
ip classless
ip route 0.0.0.0 0.0.0.0 <default gateway to isp>
ip route <default gateway to isp> 255.255.255.255 atm0.1
!
end
Troubleshoot Your Configuration
If your ADSL service is not working properly, see Troubleshooting RFC1483 Routing.
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Cisco DSL Router Configuration and Troubleshooting Guide