An S series switch can successfully ping an IP address that does not exist

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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.

Other related questions:
For S series switches, can the IP address of a VLANIF interface in a DAI-enabled VLAN be successfully pinged
For S series switches, DAI is enabled in a VLAN or on a port in a VLAN, and VLANIF interfaces are configured in the VLAN. To successfully ping the IP address of the VLANIF interface from the VLAN or the port in the VLAN, the source IP address of the ping packet must match an entry in the static DHCP snooping binding table.

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.

Whether S series switches support ping to the virtual IP address of the VRRP group
S series switches (S1700 excluded) allow user devices to ping a virtual IP address to serve the following purposes: - Monitors the operating status of the master in a VRRP group. Monitors communication between a user device and a network connected by a default gateway using the virtual IP address. Run the vrrp virtual-ip ping enable command to enable the ping to the virtual IP address.

Can S series switches assign the existing static addresses to other terminals
For S series switches excluding the S1700, when there are IP addresses (including static IP addresses) located on the same network segment, the switch will not assign the IP address to other terminals. Before assigning an IP address to a client, the DHCP server must ping the IP address to check whether this IP address is in use. This prevents address conflicts. Address detection refers to the maximum number of ping packets that a DHCP server sends and the maximum timeout interval of each ping reply are set using the dhcp server ping { packet number | timeout milliseconds } * command in the system view. If there is no response to the ping packet within a specified period, the DHCP server continues to send ping packets to this IP address until the number of ping packets reaches the maximum value. If there is still no response, the DHCP server detects that the IP address has not been used by any device on the network segment. This ensures that there is only IP address allocated to the DHCP client.

How can an S series switch ping another device using ping packets carrying a specified source IP address
For S series switches (except the S1700), you can specify the source IP address of ping packets by specifying the -a source-ip-address parameter in the ping command. For example, set the source and destination IP addresses of ping packets to 192.168.150.107 and 10.135.19.157, respectively. [HUAWEI] ping -a 192.168.150.107 10.135.19.157

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