Does the S series switch used as the DHCP relay agent support gateway failover

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Starting from V100R006C00, the DHCP relay agent on the S series switches excluding the S1700 supports gateway failover. When the active gateway fails to obtain IP addresses, the standby gateways take over and obtain IP addresses.

Other related questions:
Does the S series switch used as the DHCP relay agent support QinQ
On an S series switch excluding the S1700, the DHCP relay function can be configured on QinQ termination sub-interfaces.

Does the S series switch used as the DHCPv6 relay agent support PD relay
The S series switch (excluding the S1700) used as the DHCPv6 relay agent supports PD relay starting from V100R006C00. The switch can query, delete, and automatically generate routing information in the DHCPv6-PD table. You can manually configure routing information in the DHCPv6-PD table. The routing information in the DHCPv6-PD table is not lost after the switch restarts.

Do S series switches support the DHCP server polling function on a DHCP relay agent
When functioning as a DHCP relay agent, the S series switch excluding the S1700 supports the DHCP server polling function on a DHCP relay agent starting from V100R006C00. By default, the DHCP server polling function on a DHCP relay agent is disabled. You can enable the DHCP server polling function on a DHCP relay agent by configuring ip relay address cycle in the system view.

Does DHCP relay on S series switch support polling
When functioning as a DHCP relay agent, an S series switch (except S1700 switches) supports the DHCP server polling function since V100R006C00. By default, the DHCP server polling function is disabled. You can enable the DHCP server polling function by running the ip relay address cycle command in the system view.

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