Can addresses on the same network segment be configured on different interfaces of an AR

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Addresses on the same network segment cannot be allocated to interfaces on an AR.
Interfaces on an AR can be configured with IP addresses on network segments that overlap. For example, an interface is assigned IP address 20.1.1.1/16. When you configure IP address 20.1.1.2/24 for the other interface, the system displays a message. However, the configuration is successful. When you configure IP address 20.1.1.2/16 for the other interface, the system displays a message indicating that the address conflicts. The configuration fails.
The primary and secondary addresses of an interface can be on network segments that overlap, but must be different. For example, an interface is configured with the primary IP address 20.1.1.1/24. When you configure the secondary IP address 20.1.1.2/16, the system displays a message. However, the configuration is successful.
The primary and secondary addresses of interfaces can be on network segments that overlap, but must be different. For example, an interface is configured with IP address 20.1.1.1/16. When you configure IP address 20.1.1.2/24, the system displays a message. However, the configuration is successful.

Other related questions:
Whether USG firewalls support IP addresses in the same network segment configured for different interfaces
The USG2000, USG5000, and USG6000 do not support IP addresses in the same network segment configured for different interfaces. However, primary and secondary IP addresses of the same interface can be in the same network segment.

Can the interface address of the AR router used as the L2TP LAC and VT interface address of the LNS be on different network segments
The interface address of the AR router used as the L2TP LAC and VT interface address of the LNS can be on different network segments. The LAC and LNS can communicate with each other, but it is recommended that the interface address of the AR router used as the L2TP LAC and VT interface address of the LNS on the same network segment.

Can the LAC address and LNS VT interface address be on different segments on the AR
The LAC address and LNS VT interface address can be on different segments on the AR. The LAC can communicate with the LNS, but you are not advised to configure different network segments for them.

Whether the firewall supports the VRRP group virtual IP address and interface address that are on different network segments
Can actual interface IP addresses reside on the same network segment as virtual IP addresses in hot standby? 1. You must assign IP addresses to a physical interface before you set the virtual IP address of the VRRP group on the interface. 2. When you configure VRRP groups, ensure that the virtual IP addresses is not the IP address of any physical interface. 3. Invalid address, such as broadcast address, multicast address, or loopback address, cannot be used as the VRRP virtual IP address. 4. If the virtual IP address and the IP address of the physical interface reside on different subnets, you need to specify the subnet mask of the virtual IP address. 5. The VRID of the VRRP group cannot be the same as that configured on any other device in the same VLAN. 6. The VRIDs and virtual IP addresses of VRRP groups configured for the same interfaces on the active and standby USGs shall be the same. Configuration on the USG6000 [USG6600-1]int vlani2 [USG6600-1-Vlanif2]ip add 172.16.1.1 24 [USG6600-1-Vlanif2]vrrp vrid 1 virtual-ip 10.1.1.1 24 active [USG6600-1-Vlanif2]dis thi interface Vlanif2 ip address 172.16.1.1 255.255.255.0 vrrp vrid 1 virtual-ip 10.1.1.1 255.255.255.0 active Configuration on the USG2000&5000 [USG5500]int vlanif10 [USG5500-Vlanif10]ip add 172.16.1.1 24 [USG5500-Vlanif10]vrrp vrid 1 virtual-ip 10.10.1.1 24 master [USG5500-Vlanif10]dis this interface Vlanif10 alias vlanif 10 ip address 172.16.1.1 255.255.255.0 vrrp vrid 1 virtual-ip 10.10.1.1 255.255.255.0 master #

Configuration of an AP's wired interfaces
Configuration of a Fit AP's wired interfaces: For V200R005: [HUAWEI]wlan [HUAWEI-wlan-view]ap id 0 [HUAWEI-wlan-ap-0]lineate-port Ethernet 0 pvid vlan 100 [HUAWEI-wlan-ap-0]lineate-port Ethernet 0 vlan untagged 100 The preceding configuration takes VLAN 100 as an example. An AP's wired interfaces can be used to connect wired terminals. For V200R006: [HUAWEI]wlan [HUAWEI-wlan-view]wired-port-profile name profile-name //Create an AP wired port profile, and configure wired interface parameters in the profile. Note: 1. If an AP is connected to a switch, you can configure VLANs to allow their packets to pass through. 2. Some APs have two or more wired interfaces. The serial number of a wired interface starts with 0 and is incremented.

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