不同vlan间通信方法

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

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                         


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



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
 
save    //切换到用户模式下（ctrl+z）保存配置信息