ARP/4/ARP_LOG_DUPLICATE_IPADDR_DETECT

Message

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])

Description

The device detected an IP address conflict.

Parameters

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 0.0.0.0, 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.

Procedure

Run the display arp ip-conflict track command to check whether IP addresses conflict in the network.
- If an IP address conflict occurs, go to Step 2.
- If no IP address conflict occurs, go to Step 3.
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.
Collect log information and configuration information, and then contact technical support personnel.
End.