eNSP中拓扑：

R1：

[Huawei]sys 
[Huawei]sysname R1
[R1]int g0/0/0.10   
[R1-GigabitEthernet0/0/0.10]dot1q termination vid 10
[R1-GigabitEthernet0/0/0.10]ip add 192.168.10.1 255.255.255.0
[R1-GigabitEthernet0/0/0.10]arp b en
[R1-GigabitEthernet0/0/0.10]int g0/0/0.20
[R1-GigabitEthernet0/0/0.20]dot1q termination vid 20
[R1-GigabitEthernet0/0/0.20]ip add 192.168.20.1 255.255.255.0
[R1-GigabitEthernet0/0/0.20]arp b en

SW1：

[SW1]vlan batch 10 20
[SW1]int e0/0/1
[SW1-Ethernet0/0/1]p l a
[SW1-Ethernet0/0/1]p d v 10
[SW1-Ethernet0/0/1]undo sh
[SW1-Ethernet0/0/1]int e0/0/2
[SW1-Ethernet0/0/2]p l a
[SW1-Ethernet0/0/2]p d v 20
[SW1-Ethernet0/0/2]undo sh
[SW1-Ethernet0/0/2]int g0/0/1
[SW1-GigabitEthernet0/0/1]p l t
[SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[SW1-GigabitEthernet0/0/1]undo sh

测试联通：

在PC1配置IP地址：

在PC2配置IP地址：

PC>ping 192.168.20.10

Ping 192.168.20.10: 32 data bytes, Press Ctrl_C to break
From 192.168.20.10: bytes=32 seq=1 ttl=127 time=156 ms
From 192.168.20.10: bytes=32 seq=2 ttl=127 time=78 ms
From 192.168.20.10: bytes=32 seq=3 ttl=127 time=94 ms
From 192.168.20.10: bytes=32 seq=4 ttl=127 time=78 ms
From 192.168.20.10: bytes=32 seq=5 ttl=127 time=47 ms

--- 192.168.20.10 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 47/90/156 ms

此时实现全网互通说明全网互通，谢谢观看！