3-3
CiscouBR924 Software Configuration Guide
OL-0337-05 (8/2002)
Chapter3 Advanced Data-Only Configurations
Data-Only Routing
To verify that routing is enabled, enter the show startup-config command. The following example
shows a sample configuration file for basic data-only routing mode; the relevant commands are shown
in bold.
version 12.1
service config
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router
!
clock timezone - 4
ip subnet-zero
!
voice-port 0
!
voice-port 1
!
interface Ethernet0
ip address 172.16.0.1 255.255.0.0
no ip directed-broadcast
ip rip send version 2
ip rip receive version 2
!
interface cable-modem0
ip address dhcp
no ip directed-broadcast
ip rip send version 2
ip rip receive version 2
no cable-modem compliant bridge
!
router rip
version 2
network 10.0.0.0
network 172.16.0.0
!
ip classless
no ip http server
Step14 uBR924(config)# ip classless (Optional) Enable the forwarding of packets that are
destined for unrecognized subnets to the best
supernet route.
Step15 uBR924(config)# ip route 0.0.0.0 0.0.0.0 ip-address (Optional) Establish a static route so that all packets
without an established route are forwarded to the
default gateway (typically the ip-address should be
the IP address for the CMTS), regardless of any
routing metrics.
Step16 uBR924(config-if)# Ctrl-z Return to privileged EXEC mode.
Step17 uBR924# copy running-config startup-config
Building configuration...
Save the configuration to nonvolatile memory so
that it will not be lost in the event of a reset, power
cycle, or power outage.
Step18 uBR924# show startup-config Display the configuration file that was just created.
Step19 uBR924# reload Resets the router and cable interface to enable IP
routing mode.
Command Purpose