X Basic Router Configuration Steps
providing legal notification
(config)# bannet motd [delimiter] [message] [delimiter]
securing privileged EXEC mode
(config)# enable secret <password>
device name configuration
(config)# hostname <hostname>
enter interface configuration mode
(config)# interface [type-and-number]
securing user EXEC mode
(config)# line console 0 (config-line)# password [password] (config-line)# login
securing all passwords in the configuration file
(config)# service password-encryption
add interface configuration description (good practice)
(config-if)# description [description-text]
set IPv4 address to interface configuration
(config-if)# ip address [ipv4-address] [subnet-mask]
set IPv6 address to interface configuration
(config-if)# ipv6 address [ipv6-address/prefix-length]
save interface configuration
(config-if)# no shutdown
securing remote Telnet / SSH access
(config-line)# line vty 0 4 (config-line)# password [password] (config-line)# login (config-line)# transport input {ssh | telnet}
on inter-router connections where there is no Ethernet switch...
...both interconnecting interfaces must be configured and enabled
packets that originate from host computers connected to the switch must already have...
...the default gateway address configured on their host computer operating systems
tasks to be completed when configuring initial setting on a router:
1. device name 2. secured privileged EXEC mode 3. secured user EXEC mode 4. secured remote Telnet / SSH access 5. secured all passwords in the config file 6. provided legal notification 7. saved configuration
saving configuration file
# copy running-config startup-config
verification of interface configuration (IPv4)
# show ip interface brief
display contents of IP routing table in RAM
# show ip route
verification of interface configuration (IPv6)
# show ipv6 interface brief
switch local interface (SVI)
interface that is configured to connect and manage a switch over a local IP network
limitation of description text
no longer than 240 characters
default gateway address
the router logical interface address attached to the local network of the host
Layer 2 device
a switch that interconnects client computers
