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ARP detect fail on S5700

Publication Date:  2018-03-08 Views:  74 Downloads:  0
Issue Description
Customer report one issue : I have removed the attribute seems ok. However, I found that the machine will timeout every 5 mins and able to ping again after a few packet drop. I have tested on other huawei switch (same model and version) that has same result. It displays the arp detect failed. I would like to know anyway to solve this issue?
Handling Process

Check the cause of offline users on the device. The reason is that the offline time of ARP detection is offline. The online and offline time intervals are 5 minutes. The user offline time and packet loss time are the same....

<F16COS_BCP_A1>disp aaa offline-record all
  ------------------------------------------------------------------------------
  User name             : 002324869530
  Domain name           : cppm-domain
  User MAC              : 0023-2486-9530
  User access type      : MAC
  User access interface : GigabitEthernet3/0/5
  Qinq vlan/User vlan   : 0/351
  User IP address       : 182.97.117.201
  User IPV6 address     : -
  User ID               : 343
  User login time       : 2018/03/08 18:50:02
  User offline time     : 2018/03/08 18:54:37
  User offline reason   : ARP detect fail
  ------------------------------------------------------------------------------
  Are you sure to display some information?(y/n)[y]:y
  ------------------------------------------------------------------------------

Root Cause

The device is a Layer 2 access switch, and the gateway vlanif is on the upper layer device. Therefore, the source address of the device that sends the probe ARP uses the default of 255.255.255.255. Many terminals do not respond to the ARP packets whose source address is 255.255.255.255, The device considers that the terminal is offline and deletes the user entry on the device and disables the forwarding permission.

Solution

Modify the default source address of the device ARP probe packet (requires the corresponding version to support this command)
 
Use the access-user arp-detect default ip-address command to change the default source IP address to 0.0.0.0
 
Examples are as follows:
 
# Set the default source IP address of offline probe packets to 0.0.0.0.
 
<HUAWEI> system-view
 
[HUAWEI] access-user arp-detect default ip-address 0.0.0.0

END