sw2：

vlan batch  10 30 
interface Ethernet0/0/1  
port link-type trunk  
port trunk allow-pass vlan 2 to 4094

interface Ethernet0/0/2  
port link-type access 
port default vlan 10

interface Ethernet0/0/3  
port link-type access  
port default vlan 30

sw3：

vlan  20 interface Ethernet0/0/1  
port link-type trunk  
port trunk allow-pass vlan 2 to 4094
 

interface Ethernet0/0/2  
port link-type access  
port default vlan 20

核心交換機：sw1

vlan batch 10 20 30 
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 Vlanif30  
ip address 192.168.30.1 255.255.255.0

interface GigabitEthernet0/0/1  
port link-type trunk  
port trunk allow-pass vlan 2 to 4094
 

interface GigabitEthernet0/0/2  
port link-type trunk  
port trunk allow-pass vlan 2 to 4094

華為-兩層架構的SVI配置