1. 组网需求
某企业内网PC1 与 PC2 分别属于 VLAN10 和 VLAN20,用户网关均部署在三层核心交换机 上。接入层为二层交换机,仅提供二层交换功能;核心交换机与出口路由器通过 VLAN99 进行三层互联,实现外网路由转发。

2. 配置 思路
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vlan trunk配置
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VLANIF网关配置
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物理接口IP配置
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静态路由配置
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终端网络测试
3. 配置步骤
步骤① vlan trunk配置
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接入交换机VLAN trunk配置。
[SW1] vlan batch 10 20
[SW1] interface GigabitEthernet 0/0/22
[SW1-GigabitEthernet0/0/22] port link-type trunk
[SW1-GigabitEthernet0/0/22] port trunk allow-pass vlan 10 20
[SW1-GigabitEthernet0/0/22] quit
[SW1] interface GigabitEthernet 0/0/1
[SW1-GigabitEthernet0/0/1] port link-type access
[SW1-GigabitEthernet0/0/1] port default vlan 10
[SW1-GigabitEthernet0/0/1] quit
[SW1] interface GigabitEthernet 0/0/2
[SW1-GigabitEthernet0/0/2] port link-type access
[SW1-GigabitEthernet0/0/2] port default vlan 20
[SW1-GigabitEthernet0/0/2] quit -
核心交换机VLAN trunk配置。
[SW2] vlan batch 10 20 99
[SW2] interface GigabitEthernet 0/0/22 //连接SW2的接口
[SW2-GigabitEthernet0/0/22] port link-type trunk
[SW2-GigabitEthernet0/0/22] port trunk allow-pass vlan 10 20
[SW2-GigabitEthernet0/0/22] quit
[SW2] interface GigabitEthernet 0/0/24 //连接路由器的接口
[SW2-GigabitEthernet0/0/24] port link-type access
[SW2-GigabitEthernet0/0/24] port default vlan 99
[SW2-GigabitEthernet0/0/24] quit
步骤② VLANIF网关配置
核心交换机VLANIF用户网关配置。
[SW2] interface vlanif 10
[SW2-vlanif10] ip address 192.168.10.254 24
[SW2-vlanif10] quit
[SW2] interface vlanif 20
[SW2-vlanif20] ip address 192.168.20.254 24
[SW2-vlanif20] quit
步骤③ 物理接口IP配置
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出口路由器接口IP地址配置。
[Router] interface GigabitEthernet 0/0/1
[Router-GigabitEthernet0/0/1] ip address 12.1.1.2 30
[Router-GigabitEthernet0/0/1] quit
[Router] interface GigabitEthernet 0/0/2
[Router-GigabitEthernet0/0/2] ip address 192.168.99.2 24
[Router-GigabitEthernet0/0/2] quit -
核心交换机互联出口路由器地址配置。
[SW2] interface vlanif 99
[SW2-vlanif99] ip address 192.168.99.1 24
[SW2-vlanif99] quit
步骤④ 静态路由配置
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出口路由器配置缺省路由指向公网,静态路由指向内网核心交换机vlan10及vlan20对应的网段。
[Router] ip route-static 192.168.10.0 24 192.168.99.1
[Router] ip route-static 192.168.20.0 24 192.168.99.1
[Router] ip route-static 0.0.0.0 0 12.1.1.1 -
核心交换机配置默认路由,下一跳是出口路由器。
[SW2] ip route-static 0.0.0.0 0.0.0.0 192.168.99.2