~ /project-1 /router-config

Router Config

title: Project 1 · Router Configuration nav_title: Router Config summary: IOS commands on R1 and interface status icon: terminal description: Configuring R1, a Cisco 2901, for CS331 Project 1. Hostname, interface addresses for G0/0 and G0/1, no shutdown, and the show ip interface brief output with both interfaces up/up. kicker: Project 1 · Router config hero: Two addresses and no shutdown. lead: R1 is a Cisco 2901. I configured it from the CLI tab: a hostname, one address per LAN interface, and no shutdown to bring each interface up. Router interfaces are shut down by default. layers: [1, 2, 3] chips: - "Cisco 2901" - "G0/0 · 199.19.30.1" - "G0/1 · 199.19.30.65" - "up/up"

Configuration#

R1 · console
Router>enable
Router#configure terminal
Router(config)#hostname R1
R1(config)#interface GigabitEthernet0/0
R1(config-if)#ip address 199.19.30.1 255.255.255.192
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#interface GigabitEthernet0/1
R1(config-if)#ip address 199.19.30.65 255.255.255.192
R1(config-if)#no shutdown
R1(config-if)#end
R1#
Command What it does
enable User EXEC (>) → privileged EXEC (#)
configure terminal Enter global configuration mode
hostname R1 Name the router. The prompt changes at once
interface GigabitEthernet0/0 Select the port facing Network A
ip address 199.19.30.1 255.255.255.192 Network A's gateway address with the /26 mask
no shutdown Turn the interface on
end Back to privileged EXEC

R1's CLI tab: the configuration, the %LINK-5-CHANGED messages as each port comes up, and show ip interface brief

The Config tab shows the same settings per interface:

GigabitEthernet0/0: port on, 199.19.30.1 / 255.255.255.192

GigabitEthernet0/1: port on, 199.19.30.65 / 255.255.255.192

show ip interface brief#

R1 · show ip interface brief
R1#show ip interface brief
Interface              IP-Address      OK? Method Status                Protocol
GigabitEthernet0/0     199.19.30.1     YES manual up                    up
GigabitEthernet0/1     199.19.30.65    YES manual up                    up
Vlan1                  unassigned      YES unset  administratively down down

show ip interface brief: G0/0 and G0/1 are both up/up

Status · up · Layer 1#

A cable is connected and the port has not been shut down.

Protocol · up · Layer 2#

The link is working at the data-link layer.

Saving

copy running-config startup-config (or write memory) saves the configuration to NVRAM so it survives a reload. Packet Tracer also stores it inside the .pkt file.