Configuração do IP das interfaces e DHCP
📌
ROTEIRO
- Definir o hostname dos roteadores
- Atribuir o endereço IP das interfaces de cada roteador conectadas em cada rede (gateway)
- Criar o pool de endereços do DHCP e configurações de IPv4 de cada rede
RT-A
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Router#configure terminal Router(config)#hostname RT-A RT-A(config)#interface e0/0 RT-A(config-if)#ip address 192.168.1.254 255.255.255.0 RT-A(config-if)#no shutdown RT-A(config-if)#exit RT-A(config)#interface e0/1 RT-A(config-if)#ip address 192.168.2.254 255.255.255.0 RT-A(config-if)#no shutdown RT-A(config-if)#exit RT-A(config)#interface e0/2 RT-A(config-if)#ip address 192.168.3.254 255.255.255.0 RT-A(config-if)#no shutdown RT-A(config-if)#exit RT-A(config)#ip dhcp excluded-address 192.168.1.254 RT-A(config)#ip dhcp excluded-address 192.168.2.254 RT-A(config)#ip dhcp excluded-address 192.168.3.254 RT-A(config)#ip dhcp pool REDE1 RT-A(dhcp-config)#network 192.168.1.0 255.255.255.0 RT-A(dhcp-config)#default-router 192.168.1.254 RT-A(dhcp-config)#dns-server 8.8.8.8 RT-A(dhcp-config)#exit RT-A(config)#ip dhcp pool REDE2 RT-A(dhcp-config)#network 192.168.2.0 255.255.255.0 RT-A(dhcp-config)#default-router 192.168.2.254 RT-A(dhcp-config)#dns-server 8.8.8.8 RT-A(dhcp-config)#exit RT-A(config)#ip dhcp pool REDE3 RT-A(dhcp-config)#network 192.168.3.0 255.255.255.0 RT-A(dhcp-config)#default-router 192.168.3.254 RT-A(dhcp-config)#dns-server 8.8.8.8 RT-A(dhcp-config)#exit RT-A(config)#end RT-A#write memory |
RT-B
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Router#configure terminal Router(config)#hostname RT-B RT-B(config)#interface e0/0 RT-B(config-if)#ip address 192.168.8.254 255.255.255.0 RT-B(config-if)#no shutdown RT-B(config-if)#exit RT-B(config)#interface e0/1 RT-B(config-if)#ip address 192.168.9.254 255.255.255.0 RT-B(config-if)#no shutdown RT-B(config-if)#exit RT-B(config)#ip dhcp pool REDE8 RT-B(dhcp-config)#network 192.168.8.0 255.255.255.0 RT-B(dhcp-config)#default-router 192.168.8.254 RT-B(dhcp-config)#dns-server 8.8.8.8 RT-B(dhcp-config)#exit RT-B(config)#ip dhcp pool REDE9 RT-B(dhcp-config)#network 192.168.9.0 255.255.255.0 RT-B(dhcp-config)#default-router 192.168.9.254 RT-B(dhcp-config)#dns-server 8.8.8.8 RT-B(dhcp-config)#exit RT-B(config)#ip dhcp excluded-address 192.168.8.254 RT-B(config)#ip dhcp excluded-address 192.168.9.254 |
Mapeamento das interfaces diretamente conectadas
| Roteador | Rede | Interface | Endereço IPv4 |
| RT-A | 192.168.0.248/30 | s2/0 | 192.168.0.249 |
| RT-A | 192.168.1.0/24 | e0/0 | 192.168.1.254 |
| RT-A | 192.168.2.0/24 | e0/1 | 192.168.2.254 |
| RT-A | 192.168.3.0/24 | e0/2 | 192.168.3.254 |
| RT-B | 192.168.0.248/30 | s2/0 | 192.168.0.250 |
| RT-B | 192.168.8.0/24 | e0/0 | 192.168.8.254 |
| RT-B | 192.168.9.0/24 | e0/1 | 192.168.9.254 |
Rotas estáticas
| Roteador | Rede alcançada | Próximo roteador |
| RT-A | 192.168.8.0 | 192.168.0.250 |
| RT-A | 192.168.9.0 | 192.168.0.250 |
| RT-B | 192.168.1.0 | 192.168.0.249 |
| RT-B | 192.168.2.0 | 192.168.0.249 |
| RT-B | 192.168.3.0 | 192.168.0.249 |
Configuração do IP de WAN e das rotas estáticas
📌
ROTEIRO
- Atribuir o endereço de WAN nas interfaces seriais dos roteadores
- Definir o clock rate no RT-A
- Inserir as rotas estáticas de acordo com a tabela de rotas definida acima nos respectivos roteadores
RT-A
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RT-A#configure terminal RT-A(config)#interface s2/0 RT-A(config-if)#ip address 192.168.0.249 255.255.255.252 RT-A(config-if)#clock rate 64000 RT-A(config-if)#no shutdown RT-A(config-if)#exit RT-A(config)#ip route 192.168.9.0 255.255.255.0 192.168.0.250 RT-A(config)#ip route 192.168.8.0 255.255.255.0 192.168.0.250 RT-A(config)#end RT-A#wr |
⚠️
NOTA: No GNS3 não é necessário definir o clock rate da interface!
RT-B
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RT-B#conf t RT-B(config)#interface s2/0 RT-B(config-if)#ip address 192.168.0.250 255.255.255.252 RT-B(config-if)#no shutdown RT-B(config-if)#exit RT-B(config)#ip route 192.168.1.0 255.255.255.0 192.168.0.249 RT-B(config)#ip route 192.168.2.0 255.255.255.0 192.168.0.249 RT-B(config)#ip route 192.168.3.0 255.255.255.0 192.168.0.249 RT-B(config)#do wr |
📚 Referência
- Laboratórios de Tecnologias Cisco em Infraestrutura de Redes, 2ª Edição – Samuel Henrique Bucke Brito <https://amzn.to/44QqdZB>
*Atualizado em 28 de julho de 2025
