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Networking Basic Configuration

This project demonstrates the configuration of a Cisco 2911 router (RouterDoInferno) with three subnets (10.255.255.0/24, 172.31.255.0/24, 192.168.29.0/24) and DHCP for IP management. The network connects multiple PCs and a laptop via switches, as per the provided diagram.

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Network Overview

Router: RouterDoInferno (Cisco 2911)

Interfaces:

  • GigabitEthernet0/0: 10.255.255.1/24 (to Fa0/5 switch)
  • GigabitEthernet0/1: 172.31.255.1/24 (to Fa0/4 switch)
  • GigabitEthernet0/2: 192.168.29.1/24 (to Fa0/3 switch)

Devices: PCs (PC1 to PC12) and Laptop-PT across switches.

Diagram Reference: Star topology with router at center.

Initial Configuration

> enable - Access Privileged EXEC mode.
> configure terminal - Enter Global Configuration mode.
> hostname RouterDoInferno - Rename the device.
> enable secret MYEnablePassword - Set Privileged EXEC password.
> line console 0 - Configure console login.
    > password MyConsolePassword
    > login
    > exit
> service password-encryption - Encrypt passwords.
> banner motd #
  > " THIS IS A CONSOLE BANNER #" - Add banner

Interface GigabitEthernet0/0 (Subnet 10.255.255.0/24) configuration

> interface GigabitEthernet0/0 - Configure first subnet.
    > ip address 10.255.255.1 255.255.255.0
    > no shutdown
    > exit

Set up DHCP for 10.255.255.0/24 - "ESQUERDA"

> ip dhcp pool Esquerda - Set up DHCP for 10.255.255.0/24.
    > network 10.255.255.0 255.255.255.0
    > default-router 10.255.255.1
    > exit

Interface GigabitEthernet0/1 (Subnet 172.31.255.0/24) configuration

> interface GigabitEthernet0/1 - Configure second subnet.
    > ip address 172.31.255.1 255.255.255.0
    > no shutdown
    > exit

Set up DHCP for 10.255.255.0/24 - "MEIO"

> ip dhcp pool Meio - Set up DHCP for 172.31.255.0/24.
    > network 172.31.255.0 255.255.255.0
    > default-router 172.31.255.1
    > exit

Interface GigabitEthernet0/2 (Subnet 192.168.29.0/24) configuration

> interface GigabitEthernet0/2 - Configure third subnet.
    > ip address 192.168.29.1 255.255.255.0
    > no shutdown
    > exit

Set up DHCP for 10.255.255.0/24 - "DIREITA"

> ip dhcp pool Direita - Set up DHCP for 192.168.29.0/24.
    > network 192.168.29.0 255.255.255.0
    > default-router 192.168.29.1
    > exit

Checking configuration

> show running-config - Verify configuration.

At the end:

  • DHCP Requesting - IP configuration > Desktop > IP Configuration > Request DHCP

📚 CESAE DIGITAL – Centro para o Desenvolvimento de Competências Digitais

  • Course: Network & Cyber-Security Administrator
  • Unit: IP Addressing e Network Infrastructure
  • Instructor: Pedro Pereira