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ARP地址解析（不同网段）

1.实验拓扑图

2.配置两台PC的IP

3.配置路由器端口IP

<Huawei>system-view

Enter system view, return user view with Ctrl+Z.

[Huawei]sy R1

[R1]int G0/0/0

[R1-GigabitEthernet0/0/0]ip ad    

[R1-GigabitEthernet0/0/0]ip address 192.168.1.254 24

Jun 29 2017 14:26:01-08:00 R1 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP

on the interface GigabitEthernet0/0/0 has entered the UP state.

[R1-GigabitEthernet0/0/0]dis this

[V200R003C00]

#

interface GigabitEthernet0/0/0

 ip address 192.168.1.254 255.255.255.0

[R1-GigabitEthernet0/0/0]int G0/0/1

[R1-GigabitEthernet0/0/1]ip add    

[R1-GigabitEthernet0/0/1]ip address 192.168.2.254 24

Jun 29 2017 14:29:02-08:00 R1 %%01IFNET/4/LINK_STATE(l)[1]:The line protocol IP

on the interface GigabitEthernet0/0/1 has entered the UP state.

[R1-GigabitEthernet0/0/1]dis this

[V200R003C00]

#

interface GigabitEthernet0/0/1

 ip address 192.168.2.254 255.255.255.0

#

return

[R1-GigabitEthernet0/0/1]

4.在路由器上开启ARP代理

<R1>system-view

Enter system view, return user view with Ctrl+Z.

[R1]int G0/0/0

[R1-GigabitEthernet0/0/0]arp-pro    

[R1-GigabitEthernet0/0/0]arp-proxy en    

[R1-GigabitEthernet0/0/0]arp-proxy enable

[R1-GigabitEthernet0/0/0]

[R1-GigabitEthernet0/0/0]int G0/0/1

[R1-GigabitEthernet0/0/1]arp-pro    

[R1-GigabitEthernet0/0/1]arp-proxy enab    

[R1-GigabitEthernet0/0/1]arp-proxy enable

[R1-GigabitEthernet0/0/1]

5.在PC3上抓ARP包，并开始用PC3pingPC4

6.在PC4上抓ARP包

7.建立连接发送ping 包

PC3MAC：54-89-98-70-63-0B

PC4MAC：54-89-98-6D-65-AF

G0/0/1MAC：00-e0-fc-f4-06-8a

G0/0/0MAC：00-e0-fc-f4-06-89

在192.168.1.0网段抓包

在192.168.2.0网段抓包

说明数据包在跨网络传输的时候，源IP与目的IP不会改变，源MAC和目的MAC每经过一跳会变化。

ARP地址解析（不同网段）

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原文地址：http://www.cnblogs.com/sothatis/p/7753391.html