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Log Reference

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of logs on the product.
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ARP/4/ARP_LOG_DUPLICATE_IPADDR_DETECT:Detected an IP address collision. (IpAddress=[IpAddress], LocalMacAddress=[LocalMacAddress], LocalInterfaceName=[LocalInterfaceName], LocalVlanId=[LocalVlanId], ReceiveMacAddress=[ReceiveMacAddress], ReceiveInterfaceName=[ReceiveInterfaceName], ReceiveVlanId=[ReceiveVlanId])


The device detected an IP address conflict.


Parameter Name Parameter Meaning
IpAddress Conflicting IP addresses
LocalMacAddress MAC address of the local ARP entry
LocalInterfaceName Name of the interface recorded in the local ARP entry
LocalVlanId VLAN ID recorded in the local ARP entry
ReceiveMacAddress MAC address in the received ARP packet
ReceiveInterfaceName Name of the interface that has received ARP packet
ReceiveVlanId VLAN ID that has received ARP packet

Possible Causes

When receiving a non-gratuitous ARP packet, the device found that it had saved the corresponding ARP entry of the IP address in this ARP packet, but the MAC address in the ARP entry was different from the source MAC address in the ARP packet. Or the device receives a probe ARP packet. The source IP address is, the destination IP address is the same as the IP address of the inbound interface that receives the packet, but the source MAC address is different than the MAC address of the inbound interface.


  1. Change the IP address of a device that conflicts with the other IP address. Then, check whether this log message is still generated.

    • If this log message is still generated, go to Step 3.
    • If this log message is not generated, go to Step 4.

  2. Collect log information and configuration information, and then contact technical support personnel.
  3. End.
Updated: 2019-08-21

Document ID: EDOC1000142069

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