Can the IP address of a VLANIF interface in a DAI-enabled VLAN be successfully pinged

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Dynamic ARP Inspection (DAI) is enabled in a VLAN or on a physical interface in the VLAN, and VLANIF interfaces are configured in the VLAN. To successfully ping the IP address of the VLANIF interface from the VLAN or the physical interface in the VLAN, the source IP address of the ping packet must match an entry in the static DHCP snooping binding table.

Other related questions:
Can the IP address of a VLANIF interface in a DAI-enabled VLAN be successfully pinged
Dynamic ARP Inspection (DAI) is enabled in a VLAN or on a physical interface in the VLAN, and VLANIF interfaces are configured in the VLAN. To successfully ping the IP address of the VLANIF interface from the VLAN or the physical interface in the VLAN, the source IP address of the ping packet must match an entry in the static DHCP snooping binding table.

An S series switch can successfully ping an IP address that does not exist
If an S series switch (a non-S1700 switch) can successfully ping an IP address that does not exist, there are reachable routes between the switch and the non-existent IP address. You can check the routing table or capture packets to locate the non-existent IP address. You need to analyze the reason why the switch can successfully ping the non-existent IP address and check whether such fault is related to the service configuration.

How to create a VLANIF interface and configure an IP address for the interface on an AR router
1. In the system view, run the vlan vlan-id command to create a VLAN, and run the quit command to return to the system view. 2. In the system view, run the interface vlanif vlan-id command to create a VLANIF interface. 3. In the VLANIF view, run the ip address command to configure an IP address for the VLANIF interface.

IP address configuration on S series switch
An S series switch, except S1700, supports primary and sub IP addresses on interfaces. Each Layer 3 interface can have multiple IP addresses, including one primary IP addresses and multiple sub IP addresses. (Note: Sub IP addresses become invalid when the primary address is deleted.)Each interface on the modular switch supports 255 sub IP addresses, and each interface on the fixed switch supports 8 sub IP addresses. For example, configure a primary IP address 10.1.0.1 and a sub IP address 10.2.0.1 for VLANIF10, with subnet mask 255.255.255.0. [HUAWEI] interface vlanif 10 [HUAWEI-Vlanif10] ip address 10.1.0.1 255.255.255.0 [HUAWEI-Vlanif10] ip address 10.2.0.1 255.255.255.0 sub (Note: After IP addresses are configured for a VLANIF interface, the clients connected to the switch use one of the IP addresses as gateway address. After sub IP addresses are configured, users can change them as required, but the new IP addresses must be on the same subnet as the primary or one sub IP address; otherwise, the subnets cannot communicate with each other.)For most models in V200R005C00 and later versions, run the undo portswitch command to switch a Layer 2 interface to a Layer 3 interface, and then configure an IP address for the interface. For example, configure a primary IP address 10.1.0.1 and a sub IP address 10.2.0.1 for GE1/0/1, with subnet mask 255.255.255.0. [HUAWEI] interface gigabitethernet 1/0/1 [HUAWEI-GigabitEthernet1/0/1] undo portswitch [HUAWEI-GigabitEthernet1/0/1] ip address 10.1.0.1 255.255.255.0 [HUAWEI-GigabitEthernet1/0/1] ip address 10.2.0.1 255.255.255.0 sub

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