配置思路：
此场景用户与服务器间跨越多台二层、三层交换机，可以配置 VLANIF，将汇聚交换机 AGG 作为用户
PC 的网关，核心交换机作为服务器 Server 的网关。但 VLANIF 只生成直连路由，只能使得相邻设备互
通，要使 User 与服务器互通，还需要配置从 AGG 到 VLAN20 网段以及从 CORE 到 VLAN10 网段的路由，
可以使用静态路由，也可以使用动态路由，本示例采用静态路由。

ACC1

sysname ACC1
vlan batch 10

interface GigabitEthernet0/0/1
port link-type access
port default vlan 10

interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 10

ACC2

sysname ACC2
vlan batch 20

interface GigabitEthernet0/0/1
port link-type access
port default vlan 20

interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 20

AGG

sysname AGG
vlan batch 10 30

interface Vlanif10
ip address 10.1.1.1 255.255.255.0

interface Vlanif30
ip address 10.10.30.1 255.255.255.0

interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 10

interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 30

ip route-static 192.168.1.0 255.255.255.0 10.10.30.2

CORE

sysname CORE
vlan batch 20 30

interface Vlanif20
ip address 192.168.1.1 255.255.255.0

interface Vlanif30
ip address 10.10.30.2 255.255.255.0

interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 20

interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 30

ip route-static 10.1.1.0 255.255.255.0 10.10.30.1

PC3和PC4互访