CCNA Module 10: Basic Router Configuration

Configure the device hostname

Router(config)# hostname hostname

Secure privileged EXEC mode

Router(config)# enable secret password

Secure user EXEC mode

Router(config-line)# line console 0

password password

login

Secure remote Telnet / SSH access

Router(config-line)# line vty 0 4

password password

login

transport input { ssh | telnet}

secure all passwords in the config file

Router(config)# service password-encryption

Provide legal notification through a banner

Router(config)# banner motd #message#

save the configuration

Router# copy running-config startup-config

Configure router interface

Router(config)# interface type-and-number

Router(config-if)# description description-text

Router(config-if)# ip address ipv4-address subnet-mask

ipv6 address ipv6-address/prefix-length

no shutdown

Verify interface configuration

Router# show ip interface brief

or

show ipv6 interface brief

Display the content of the IP routing tables stored in RAM

Router# show ip route

or

Router# show ipv6 route

configure an IPv4 default gateway on a switch

Router(config)# ip default-gateway ip-address

check if the router has all ip addresses correct

compare running config (on router) to addressing chart (on paper) and ensure PCs have correct IP

also can ping to see if it all works

Cisco 4000 Series Router

Cisco 2960 Series Switches

How to enter line configuration mode

Router(config)# login

or

line vty 0 4

what router command achieves the goal of providing the highest level of security to passwords

enable secret password