Troubleshooting guide

Clear Existing Configurations on the Cisco DSL Router

Type enable at the router prompt to enter privileged mode.

Router>enable

Router#

!−−− The # symbol indicates that you are in privileged mode.

Clear existing configurations on the router.

Router#write erase

Reload the router so it will boot with a blank startup configuration.

Router#reload

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#

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

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

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

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

Configure the ATM interface of your Cisco DSL Router with an ATM permanent virtual circuit

(PVC), encapsulation type, and Dialer pool.

Router#configure terminal

Cisco DSL Router Configuration and Troubleshooting Guide