Can the MAC address in an ARP mapping entry be configured to a multicast MAC address for a static ARP mapping table

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Versions earlier than V100R006 do not support the function of configuring the MAC address in an ARP mapping entry to a multicast MAC address for a static ARP mapping table.

V100R006 and later versions support the function of configuring the MAC address in an ARP mapping entry to a multicast MAC address for a static ARP mapping table.

Other related questions:
Configure ARP entry update upon MAC address change on S series switch
principals of ARP entry update upon MAC address change on S series switches (except S1700): Every device on a network has an IP address, which is used to communicate with other devices. On an Ethernet, hosts, switches, or routers send and receive Ethernet data frames based on MAC addresses. ARP provides mappings between IP addresses and MAC addresses. When devices on different network segments communicate, ARP entries must be used to map IP addresses to correct MAC addresses and outbound interfaces. If you change the location of a host to connect the host to another interface of a switch, the host's MAC address will be learned on this interface and the outbound interface corresponding to the MAC address will change. However, the outbound interface in the ARP entry will be updated only after the aging time expires. Before the aging time expires, the switch will use the incorrect ARP entry for communication. After the mac-address update arp command is configured in the system view, the outbound interface in an ARP entry can be updated based on the outbound interface in an MAC address entry. Precautions: 1. This command is valid only for dynamic ARP entries instead of static ARP entries. 2. The mac-address update arp command will not take effect after the arp anti-attack entry-check enable command is executed to configure fixed ARP. 3. After ARP entry update upon MAC address change is enabled, an ARP entry is updated only when the outbound interface in the corresponding MAC address entry changes. 4. Configuring ARP entry update upon MAC address change will cause the gratuitous ARP packet discarding function to become ineffective. 5. S series switches running versions earlier than V100R006C00 do not support ARP entry update upon MAC address change.

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.

Do S series switches support static multicast MAC addresses
S series switches (except the S1700) support static multicast MAC addresses in V100R006 and later versions. However, the support for this function varies depending on switch models. - S2700SI/S2700EI: not supported - S3700SI/S3700EI: not supported - S5710-C-LI: not supported - S5700SI: supported in V200R003 and later versions

How to check ARP and MAC address entries on S series switches
For S series switches (except the S1700), you can run the display mac-address command to check MAC address entries and run the display arp command to check ARP entries.

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