Is S12700 the only S series switch that supports SFUs

2

The S12700 and S9310 support independent SFUs.
The S12704 supports ET1D2SFUA000 and ET1D2SFUC000.
The S12708 supports ET1D2SFUA000, ET1D2SFUC000, ET1D2SFUD000, and ET1D2SFUB000.
The S12712 supports ET1D2SFUA000, ET1D2SFUD000, and ET1D2SFUB000.
The S12710 supports ET1D2SFUB000.
The S9310 supports LE1D2SFUK000.

Other related questions:
S12700 SFU clustering
The S12700 uses a hardware architecture that separates the switching plane from the control plane. It has independent SFUs, and the CSS card is installed on the SFU. Packet forwarding is not affected when the S12700 has no MPU installed. This architecture allows two S12700s to set up a CSS with no MPU installed on the standby switch. 1+N backup of MPUs enables a CSS to run stably as long as one MPU of any chassis in the CSS is working normally.

SFU functions of S12700 switches
The ET1D2SFU provides the data plane for the entire system. The data plane provides high-speed, non-blocking data channels for data switching between service modules. The ET1D2SFU consists of the following functional modules: - Switching module: functions as the data plane and provides high-speed service channels for data switching. - Local clock module: provides the working clock for the chips of the switching module, management module, and monitoring module on the ET1D2SFU. - Power module: provides power supply for the ET1D2SFU. For the hardware description of S12700 switches, see S12700 Hardware Description.

DHCPv6 support on S series switch
Versions and models of S series switches (except S1700 switches) that support DHCPv6 are as follows: - S9300 and S7700 series switches in V100R003 and later versions - S3700SI, S3700EI, S5700SI, and S5700EI switches in V100R005 and later versions - S3700HI, S5700HI, and S6700EI switches in V100R006 and later versions - S9700 series, S5700LI, S5700S-LI, S5710-C-LI, and S5710EI switches in V200R001 and later versions - S2750EI and S5710HI switches in V200R003 and later versions - S12708 and S12712 switches in V200R005 and later versions - S1720, S2720EI, and S5720HI switches in V200R006 and later versions - S5720EI switches in V200R007 and later versions

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