利用华为模拟器eNSP来设计逻辑网络拓朴图，有一台路由器AR201，一台二层交换机S5700，二台PC主机。其之间用线缆连接并作好标注。
注意：连接好线缆后设置PC1和PC2的IP地址、子网掩码及网关，其中网关为路由器中设置的IP地址。
1 实现不同vlan间的通信方法之——单臂路由
1.1 配置交换机
system-view
sysname SW1 //设置交换机名字为SW1
vlan batch 2 3 //连续创建vlan 2 3
interface Ethernet 0/0/2
port link-type access //设置端口类型为access
port default vlan 2 //将接口划分到vlan 2
quit
interface Ethernet 0/0/3
port link-type access
port default vlan 3
quit
interface Ethernet 0/0/1
port link-type trunk //设置端口类型为trunk
port trunk allow-pass vlan 2 3 //华为交换机默认不支持其他vlan通过，除去vlan 1,允许trunk端口通过vlan 2 3
1.2 配置路由器
system-view
sysname R1 //设置路由器名字R1
display interface brief //显示接口概要
interface GigabitEthernet 0/0/0.1
dot1q termination vid 2 //封装dot1q协议,该子接口对应vlan 2
ip address 192.168.2.254 24 //设置子接口IP地址和子网掩码
arp broadcast enable //开启子接口的ARP广播
quit
interface GigabitEthernet 0/0/0.2
dot1q termination vid 3
ip address 192.168.3.254 24
arp broadcast enable
quit
display ip interface brief //显示接口IP的简要状态信息
ping 192.168.2.2 //测试能够ping通
ping 192.168.3.3
2 配置三层交换
[SW2]vlan batch 2 3
[SW2]interface GigabitEthernet 0/0/1
[SW2-GigabitEthernet0/0/1]port link-type access
[SW2-GigabitEthernet0/0/1]port default vlan 2
[SW2-GigabitEthernet0/0/1]interface GigabitEthernet 0/0/2
[SW2-GigabitEthernet0/0/2]port link-type access
[SW2-GigabitEthernet0/0/2]port default vlan 3
<SW2>display vlan
The total number of vlans is : 3
--------------------------------------------------------------------------------
U: Up; D: Down; TG: Tagged; UT: Untagged;
MP: Vlan-mapping; ST: Vlan-stacking;
#: ProtocolTransparent-vlan; *: Management-vlan;
--------------------------------------------------------------------------------
VID Type Ports
--------------------------------------------------------------------------------
1 common UT:GE0/0/3(D) GE0/0/4(D) GE0/0/5(D) GE0/0/6(D)
GE0/0/7(D) GE0/0/8(D) GE0/0/9(D) GE0/0/10(D)
GE0/0/11(D) GE0/0/12(D) GE0/0/13(D) GE0/0/14(D)
GE0/0/15(D) GE0/0/16(D) GE0/0/17(D) GE0/0/18(D)
GE0/0/19(D) GE0/0/20(D) GE0/0/21(D) GE0/0/22(D)
GE0/0/23(D) GE0/0/24(D)
2 common UT:GE0/0/1(U)
3 common UT:GE0/0/2(U)
VID Status Property MAC-LRN Statistics Description
--------------------------------------------------------------------------------
1 enable default enable disable VLAN 0001
2 enable default enable disable VLAN 0002
3 enable default enable disable VLAN 0003
<SW2>
<SW2>
<SW2>display interface brief
PHY: Physical
*down: administratively down
(l): loopback
(s): spoofing
(b): BFD down
(e): ETHOAM down
(dl): DLDP down
(d): Dampening Suppressed
InUti/OutUti: input utility/output utility
Interface PHY Protocol InUti OutUti inErrors outErrors
GigabitEthernet0/0/1 up up 0% 0% 0 0
GigabitEthernet0/0/2 up up 0% 0% 0 0
GigabitEthernet0/0/3 down down 0% 0% 0 0
GigabitEthernet0/0/4 down down 0% 0% 0 0
GigabitEthernet0/0/5 down down 0% 0% 0 0
GigabitEthernet0/0/6 down down 0% 0% 0 0
GigabitEthernet0/0/7 down down 0% 0% 0 0
GigabitEthernet0/0/8 down down 0% 0% 0 0
GigabitEthernet0/0/9 down down 0% 0% 0 0
GigabitEthernet0/0/10 down down 0% 0% 0 0
GigabitEthernet0/0/11 down down 0% 0% 0 0
GigabitEthernet0/0/12 down down 0% 0% 0 0
GigabitEthernet0/0/13 down down 0% 0% 0 0
GigabitEthernet0/0/14 down down 0% 0% 0 0
GigabitEthernet0/0/15 down down 0% 0% 0 0
GigabitEthernet0/0/16 down down 0% 0% 0 0
GigabitEthernet0/0/17 down down 0% 0% 0 0
GigabitEthernet0/0/18 down down 0% 0% 0 0
GigabitEthernet0/0/19 down down 0% 0% 0 0
GigabitEthernet0/0/20 down down 0% 0% 0 0
GigabitEthernet0/0/21 down down 0% 0% 0 0
GigabitEthernet0/0/22 down down 0% 0% 0 0
GigabitEthernet0/0/23 down down 0% 0% 0 0
GigabitEthernet0/0/24 down down 0% 0% 0 0
MEth0/0/1 down down 0% 0% 0 0
NULL0 up up(s) 0% 0% 0 0
Vlanif1 down down -- -- 0 0
<SW2>
<SW2>
<SW2>system-view
Enter system view, return user view with Ctrl+Z.
[SW2]
[SW2]
[SW2]
[SW2]interface vlanif 2
[SW2-Vlanif2]ip address 192.168.2.254 24
[SW2-Vlanif2]
Aug 8 2018 17:27:39-08:00 SW2 %%01IFNET/4/LINK_STATE(l)[55]:The line protocol I
P on the interface Vlanif2 has entered the UP state.
[SW2-Vlanif2]interface vlanif 3
[SW2-Vlanif3]ip address 192.168.3.254 24
[SW2-Vlanif3]quit
[SW2]ping 192.168.2.1
[SW2]ping 192.168.3.1
<SW2>save //切换到用户模式下（ctrl+z）保存配置信息
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