A message about interface conflict or ARP IP address conflict is displayed when a NAT server is configured

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When the IP address of an interface on the public network is used in the nat server command to configure an intranet server to provide services for users on the public network, the following error message is displayed:
[AR2200-GigabitEthernet0/0/1] ip address 22.1.1.1 24
[AR2200-GigabitEthernet0/0/1] nat server protocol 80 global 22.1.1.1 inside 10.1.1.1
Error: The address conflicts with interface or ARP IP.
To solve this problem, change the public IP address to the current-interface in the nat server command as follows:
[AR2200-GigabitEthernet0/0/1] nat server protocol 80 global current-interface inside 10.1.1.1

Other related questions:
When prompted to configure NAT Server,AR router report ARP conflict or interface conflict ?
When configure NAT Server, if use the network interface IP address, there may be the following configuration error. [AR2200-GigabitEthernet0/0/1] IP 22.1.1.1 address 24 [AR2200-GigabitEthernet0/0/1] NAT protocol 80 global inside 22.1.1.1 10.1.1.1 server Error: The conflicts with or ARP interface address IP. At this time, need to configure NAT server command when the network port IP address to current-interface, as follows: [AR2200-GigabitEthernet0/0/1] NAT protocol 80 global inside current-interface 10.1.1.1 server

Do interfaces conflict when the NAT server and outbound NAT are configured on the AR router
Interfaces do not conflict when the NAT server and outbound NAT are configured on the AR router.

Remove IP address conflict on S series switch
In an ARP entry on an S series switch, except S1700, when one IP address matches multiple MAC addresses: If the switch functions as a DHCP server to assign IP addresses to clients, configure IP address conflict probing on the switch. If the switch functions as a gateway and IP addresses are statically assigned to clients, determine the clients using conflicting IP addresses and change the IP addresses for them manually.

Detect IP address conflicts on S series switch
On an S series switch, except S1700: When the IP addresses of two network devices conflict, the CPU usage on the switch becomes high and route flapping will occur on the switch. User services may be interrupted. To manage IP addresses efficiently and detect IP address conflicts promptly, enable IP address conflict detection. The switch can record logs for IP address conflicts. The configuration procedure is as follows: 1. Run the system-view command to enter the system view. 2. Run the arp ip-conflict-detect enable command to enable IP address conflict detection. By default, IP address conflict detection is disabled. 3. Run the display arp ip-conflict track command in any view to check IP address conflict records.

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