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Massive IPCONFLICT alarm on firewall USG6320

Latest reply: Oct 19, 2018 06:50:30 1166 2 0 0 0
#2018/10/11 11:43:47+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.86, Local interface=GigabitEthernet0/0/2, Local MAC=4c49-e313-6479, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=b035-9f12-be39, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:43:37+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.57, Local interface=GigabitEthernet0/0/2, Local MAC=5427-58d9-b759, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=8844-7790-de38, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:40:33+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.249, Local interface=GigabitEthernet0/0/2, Local MAC=64db-4345-93b3, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=74da-da92-c8b3, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:39:17+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.88, Local interface=GigabitEthernet0/0/2, Local MAC=acd1-b85e-dcc9, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=f442-8fa4-5594, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:37:49+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.148, Local interface=GigabitEthernet0/0/2, Local MAC=409c-283e-adcc, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=e806-a50d-cd1e, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:35:43+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.138, Local interface=GigabitEthernet0/0/2, Local MAC=149f-3cc7-1f28, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=74da-da92-c8b3, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:35:07+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.222, Local interface=GigabitEthernet0/0/2, Local MAC=a028-ed0f-2ec7, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=3063-6b89-fe77, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:33:46+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.86, Local interface=GigabitEthernet0/0/2, Local MAC=b035-9f12-be39, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=4c49-e313-6479, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:33:43+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.76, Local interface=GigabitEthernet0/0/2, Local MAC=f0c8-500e-c11b, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=64db-436f-cf29, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:30:24+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.57, Local interface=GigabitEthernet0/0/2, Local MAC=8844-7790-de38, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=5427-58d9-b759, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:27:42+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.87, Local interface=GigabitEthernet0/0/2, Local MAC=989e-635f-0a8c, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=7404-2bb1-dd1b, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:25:22+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.231, Local interface=GigabitEthernet0/0/2, Local MAC=74da-da92-c8b3, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=d037-42cb-f8cd, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:20:53+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.77, Local interface=GigabitEthernet0/0/2, Local MAC=2492-0ef9-85de, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=9494-26d7-4296, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:20:36+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.86, Local interface=GigabitEthernet0/0/2, Local MAC=b035-9f12-be39, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=4c49-e313-6479, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:19:26+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.148, Local interface=GigabitEthernet0/0/2, Local MAC=409c-283e-adcc, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=e806-a50d-cd1e, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).
#2018/10/11 11:13:39+02:00 USG6300 ARP/4/ARP_IPCONFLICT_TRAP:OID 1.3.6.1.4.1.2011.5.25.123.2.6 ARP detects IP conflict. (IP address=10.23.101.87, Local interface=GigabitEthernet0/0/2, Local MAC=e0aa-9699-6a96, Local vlan=0, Local CE vlan=0, Receive interface=GigabitEthernet0/0/2, Receive MAC=989e-635f-0a8c, Receive vlan=0, Receive CE vlan=0, IP conflict type=Remote IP conflict).

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chenhui
Admin Created Oct 12, 2018 00:56:36

quite a lot of IP conflict may caused by an access switch or main uplink down in redundant connection.
suggest you to upload a simple topology for more detail analyzing.
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WheatGrass
Created Oct 19, 2018 06:50:30

Possible Causes
The remote IP address of a peer in the IPSec policy group applied to an interface is a domain name. However, the IP address obtained through DNS resolution conflicts with the remote address of another peer in the same IPSec policy group.

Procedure
Run the ip host host-name ip-address command in the system view to configure a new mapping between the domain name and IP address.
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