Does the S series switch used as the DHCPv6 relay agent support PD relay

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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.

Other related questions:
Does DHCPv6 relay support PD relay on S series switch
Since V100R006C00, S series switches (except S1700 switches) support the Prefix Delegation with DHCP (DHCPv6-PD). You can view, delete, automatically generate, or manually configure routing information in the DHCPv6-PD table. The routing information in the DHCPv6-PD table will not be lost after the switch restarts.

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.

DHCPv6 Relay configuration on S series switch
S series switches (except S1700 switches) support the DHCPv6 relay function, which can be configured using either of the following methods: - Configure an IPv6 address for the DHCPv6 server or the next-hop relay agent on an interface. [HUAWEI] dhcp enable [HUAWEI] ipv6 [HUAWEI] interface vlanif 100 [HUAWEI-Vlanif100] ipv6 enable [HUAWEI-Vlanif100] dhcpv6 relay destination fc00:1::1 //Enable DHCPv6 relay and configure an IPv6 address for the DHCPv6 server or the next-hop relay agent. - Bind a DHCPv6 server group on an interface. [HUAWEI] dhcp enable [HUAWEI] ipv6 [HUAWEI] dhcpv6 server group DHCPv6-srv1 //Create a DHCPv6 server group. [HUAWEI-dhcpv6-server-group-DHCPv6-srv1] dhcpv6-server fc00:1::1 //Add a DHCPv6 server with IPv6 address fc00:1::1 [HUAWEI-dhcpv6-server-group-DHCPv6-srv1] quit [HUAWEI] interface vlanif 100 [HUAWEI-Vlanif100] ipv6 enable [HUAWEI-Vlanif100] dhcpv6 relay server-select DHCPv6-srv1 //Bind the DHCPv6 server group on the interface. For details about DHCPv6 relay support of S series switches, see information on the right.

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

Why clients cannot go online when S series switch functions as a DHCPv6 relay agent
A PC may fail to go online when an S series switch functions as the DHCPv6 relay agent due to the following: If the PC is directly connected to the switch, check multicast packet statistics on the interface connected to the PC. If the inbound counter is 0, the firewall of the PC may have discarded DHCPv6 Request messages. In this case, disable the firewall and obtain an IP address again.

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