ospf配置

一、地址规划

1️⃣ 各网段

PC1网段： 10.47.21.0/24
Server1网段： 10.47.31.0/24
PC2网段： 10.47.6.0/24
Client2网段： 10.47.3.0/24
Server2网段： 10.47.4.0/24
Server3网段： 10.47.2.0/24
Client1网段： 10.47.11.0/24
Client3网段： 10.47.5.0/24

2️⃣ 路由器互联

AR1—AR2：10.47.12.0/24
AR2—AR3：10.47.23.0/24

二、核心要求对应说明

三、路由器配置

🔹 AR1 配置

sysname AR1
interface GigabitEthernet0/0/0
ip address 10.47.12.1 255.255.255.0
interface GigabitEthernet0/0/1
ip address 10.47.1.1 255.255.255.0
interface GigabitEthernet0/0/2
ip address 10.47.11.254 255.255.255.0
ospf 1
ospf router-id 1.1.1.1
area 0
network 10.47.12.0 0.0.0.255
network 10.47.1.0 0.0.0.255
network 10.47.11.0 0.0.0.255

🔹 AR2 配置

sysname AR2
interface GigabitEthernet0/0/0
ip address 10.47.12.2 255.255.255.0
interface GigabitEthernet0/0/1
ip address 10.47.21.254 255.255.255.0
interface GigabitEthernet0/0/2
ip address 10.47.23.2 255.255.255.0
ospf 1
ospf router-id 2.2.2.2
area 0
network 10.47.12.0 0.0.0.255
network 10.47.21.0 0.0.0.255
network 10.47.23.0 0.0.0.255

🔹 AR3 配置（重点）

sysname AR3
interface GigabitEthernet0/0/2
ip address 10.47.23.3 255.255.255.0
interface GigabitEthernet0/0/1
ip address 10.47.31.254 255.255.255.0
# 子接口（VLAN50）
interface GigabitEthernet0/0/0.10
dot1q termination vid 50
ip address 10.47.5.254 255.255.255.0
arp broadcast enable
# 子接口（VLAN60）
interface GigabitEthernet0/0/0.20
dot1q termination vid 60
ip address 10.47.6.254 255.255.255.0
arp broadcast enable
ospf 1
ospf router-id 3.3.3.3
area 0
network 10.47.23.0 0.0.0.255
network 10.47.31.0 0.0.0.255
network 10.47.5.0 0.0.0.255
network 10.47.6.0 0.0.0.255

四、交换机配置

🔹 S5700-LSW1（三层交换机）

sysname LSW1
vlan batch 10 20 30 40
interface Vlanif10
ip address 10.47.1.254 255.255.255.0
interface Vlanif20
ip address 10.47.2.254 255.255.255.0
interface Vlanif30
ip address 10.47.3.254 255.255.255.0
interface Vlanif40
ip address 10.47.4.254 255.255.255.0
# 接口划分
interface GigabitEthernet0/0/1
port link-type access
port default vlan 10
interface GigabitEthernet0/0/2
port link-type access
port default vlan 40
interface GigabitEthernet0/0/3
port link-type access
port default vlan 20
interface GigabitEthernet0/0/4
port link-type access
port default vlan 30
# 上联AR1
interface GigabitEthernet0/0/0
port link-type access
port default vlan 10
# OSPF（重点要求2）
ospf 1
ospf router-id 4.4.4.4
area 0
network 10.47.1.0 0.0.0.255
network 10.47.2.0 0.0.0.255
network 10.47.3.0 0.0.0.255
network 10.47.4.0 0.0.0.255

👉 验证命令（要求2）：

display ip routing-table protocol ospf

🔹 S3700-LSW2（二层交换机）

sysname LSW2
vlan batch 50 60

interface e0/0/2
port link-type access
port default vlan 50

interface e0/0/3
port link-type access
port default vlan 60

# 上联AR3
interface e0/0/1
port link-type trunk
port trunk allow-pass vlan 50 60

五、终端配置

PC1

IP: 10.47.21.10
GW: 10.47.21.254

PC2

IP: 10.47.6.10
GW: 10.47.6.254

Client1

IP: 10.47.11.200
GW: 10.47.11.254

Client2

IP: 10.47.5.200
GW: 10.47.5.254

Client3

IP: 10.47.3.200
GW: 10.47.3.254

六、服务器配置

Server1（HTTP）

IP: 10.47.31.100
GW: 10.47.31.254
开启HTTP服务

Server2（HTTP）

IP: 10.47.4.100
GW: 10.47.4.254
开启HTTP服务

Server3

IP: 10.47.2.100
GW: 10.47.2.254

🎯 常见错误提醒（很重要）

1. ❌ OSPF漏宣告网段
2. ❌ VLAN没打通（特别是AR3子接口）
3. ❌ 网关配置错误
4. ❌ 二层交换机 trunk 没放行 VLAN