首先 这是一个非常简单的VLAN跨三层互通拓扑
利用VLANIF端口实现VLAN间互通,接入交换机ACC1和ACC2下联access类型的vlan10 和20,上行核心交换机之间通过trunk放行vlan 10 20,核心交换机通过vlan 100 和路由器对接,这里需要注意一点:路由器没有到达内部设备网段的路由,路由是双向的,需要手动配置静态路由,下面给出具体配置:
Router:
interface GigabitEthernet0/0/0
ip address 192.168.1.1 255.255.255.248
ip route-static 192.168.10.0 255.255.255.0 192.168.1.3
ip route-static 192.168.20.0 255.255.255.0 192.168.1.3
CORE:
vlan batch 10 20 100
interface Vlanif10
ip address 192.168.10.1 255.255.255.0
interface Vlanif20
ip address 192.168.20.1 255.255.255.0
interface Vlanif100
ip address 192.168.1.3 255.255.255.248
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 10 20
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 10 20
interface GigabitEthernet0/0/3
port link-type access
port default vlan 100
ACC1(这里给出一台接入交换机的配置 另外的配置相同):
vlan batch 10 20
interface GigabitEthernet0/0/1
port link-type access
port default vlan 10
interface GigabitEthernet0/0/2
port link-type access
port default vlan 20
interface GigabitEthernet0/0/3
port link-type trunk
port trunk allow-pass vlan 10 20