Troubleshooting guide

System configuration has been modified. Save? [yes/no]:no
Proceed with reload? [confirm]yes
!−−− Reloading the router may take a few minutes.
After the router has reloaded, enter enable mode again.
Router>enable
Router#
4.
Configure the Cisco DSL Router
Configure service timestamp to properly log and display debug output in the troubleshooting
section.
Router#configure terminal
Router(config)#service timestamps debug datetime msec
Router(config)#service timestamps log datetime msec
Router(config)#end
1.
Disable the logging console on your Cisco DSL Router to suppress console messages that may be
triggered while you are configuring the router.
Router#configure terminal
Router(config)#no logging console
Router(config)#end
2.
Configure ip routing, ip subnet−zero, and ip classless to provide flexibility in
routing configuration options.
Router#configure terminal
Router(config)#ip routing
Router(config)#ip subnet−zero
Router(config)#ip classless
Router(config)#end
3.
Configure an IP address and subnet mask on the Cisco DSL Router Ethernet interface.
(Optional) Enable NAT inside on the Ethernet interface.
Router#configure terminal
Router(config)#interface ethernet 0
Router(config−if)#ip address <ip address> <subnet mask>
Router(config−if)#ip nat inside
Router(config−if)#no shut
Router(config−if)#end
4.
Configure the ATM interface of your Cisco DSL Router with the no shut command to bring up the
interface.
Router#configure terminal
Router(config)#interface atm 0
Router(config−if)#no shut
Router(config−if)#end
5.
Configure the ATM subinterface of your Cisco DSL Router with an ATM permanent virtual circuit
(PVC) and encapsulation type.
Router#configure terminal
Router(config)#interface atm 0.1 point−to−point
Router(config−subif)#
Router(config−if)#ip address <ip address> <subnet mask>
Router(config−if)#ip nat outside
Router(config−subif)#pvc <vpi/vci>
Router(config−subif−atm−vc)#encapsulation aal5snap
Router(config−subif−atm−vc)#end
6.
Cisco DSL Router Configuration and Troubleshooting Guide