【关于ensp的bug】关于网传mac地址颠倒学习的现象

lab：

一台交换机下挂两台pc机，分别为pc1和pc2，pc1和pc2的网络规划如下表。

确保switch的Mac地址表和arp表是空的

dis mac-address 

dis arp all
IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE INTERFACE      VPN-INSTANCE      
                                          VLAN 
------------------------------------------------------------------------------
------------------------------------------------------------------------------
Total:0         Dynamic:0       Static:0     Interface:0    
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如果mac地址非空使用undo Mac-address

<Huawei>system-view 
[Huawei]undo mac-address 
Info: This operation will delete all MAC address entries except DHCP sticky MAC 
and NAC MAC.
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4

pc1 ping 不存在的ip地址（10.1.1.10）

PC>ping 10.1.1.10

Ping 10.1.1.10: 32 data bytes, Press Ctrl_C to break
From 10.1.1.1: Destination host unreachable
From 10.1.1.1: Destination host unreachable
From 10.1.1.1: Destination host unreachable
From 10.1.1.1: Destination host unreachable
From 10.1.1.1: Destination host unreachable

--- 10.1.1.10 ping statistics ---
  5 packet(s) transmitted
  0 packet(s) received
  100.00% packet loss
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swicth

[Huawei]dis mac-address 
MAC address table of slot 0:
-------------------------------------------------------------------------------
MAC Address    VLAN/       PEVLAN CEVLAN Port            Type      LSP/LSR-ID  
               VSI/SI                                              MAC-Tunnel  
-------------------------------------------------------------------------------
5489-986a-7be1 1           -      -      GE0/0/1         dynamic   0/-         
-------------------------------------------------------------------------------
Total matching items on slot 0 displayed = 1 
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pc1 ping pc2

PC>ping 10.1.1.2

Ping 10.1.1.2: 32 data bytes, Press Ctrl_C to break
From 10.1.1.2: bytes=32 seq=1 ttl=128 time=46 ms
From 10.1.1.2: bytes=32 seq=2 ttl=128 time=63 ms
From 10.1.1.2: bytes=32 seq=3 ttl=128 time=46 ms
From 10.1.1.2: bytes=32 seq=4 ttl=128 time=63 ms
From 10.1.1.2: bytes=32 seq=5 ttl=128 time=46 ms

--- 10.1.1.2 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 46/52/63 ms
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swicth

[Huawei]dis mac-address
MAC address table of slot 0:
-------------------------------------------------------------------------------
MAC Address    VLAN/       PEVLAN CEVLAN Port            Type      LSP/LSR-ID  
               VSI/SI                                              MAC-Tunnel  
-------------------------------------------------------------------------------
5489-986a-7be1 1           -      -      GE0/0/1         dynamic   0/-         
5489-98ea-60b0 1           -      -      GE0/0/2         dynamic   0/-         
-------------------------------------------------------------------------------
Total matching items on slot 0 displayed = 2 
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实验结果并未出现mac地址颠倒的现象，ensp正常。