2個交換機起好三層的SVI自動就通了

SW1

intface vlanif 10

ip add 192.168.100.1 24

interface vlanif 20

ip add 192.168.200.1 24

SW2

interface vlanif 10

ip add 192.168.100.2 24

interface vlanif 20

ip add 192.168.200.2 24

int eht0/0/3

port link-type trunk

port trunk al pass vlan 10 20

int eth0/0/1

port link-type access

port default vlan 10

int eth0/0/2

port link-type access

port default vlan 20

下游PC閘道器指向所在交換機的vlanif 地址即可。