Stacking support of S series fixed switch

The S7706/S7712, S9706/S9712, S12704/S12708/S12712, and S9306/S9312 support CSS, but S7703, S9703, and S9303 do not support CSS. Only the switches of the same series can set up a CSS. For example, an S7706 can set up a CSS with S7706 or S7712, but cannot set up a CSS with S9706.
A CSS can contain a maximum of two switches.
The S7706/S7712, S9706/S9712, and S9306/S9312 support both cluster card CSS and service port CSS. The S12700 supports only cluster card CSS. The S7706/S7712 have supported cluster card CSS since V1R6 and service port CSS since V2R2. The S9706/S9712 have supported cluster card CSS since V2R3 and service port CSS since V2R1C01. The S9306/S9312 have supported cluster card CSS since V1R3 and service port CSS since V2R2. The S12708/S12712 have supported cluster card CSS since V2R5 and S12704 has supported cluster card CSS since V2R8.
To set up a CSS through cluster cards, the customer needs to buy the cluster cards. To set up a CSS through service ports on S9306/S9312, the customer needs to apply for the license (the other models do not need license).
The CSS support, clustering modes, software and hardware requirements, typical networking, and configuration procedures on all models are provided in Typical CSS Configuration of Typical Configuration Examples.
For the CSS support on S7700&S9700, see Software and Hardware Requirements for the CSS Card Connection Mode and Software and Hardware Requirements on the Service Port Connection Mode in Typical Configuration Examples-Typical CSS Configuration.
For the CSS support on S12700, see Software and Hardware Requirements for the CSS Card Connection Mode and Software and Hardware Requirements on the Service Port Connection Mode in Typical Configuration Examples-Typical CSS Configuration.
For the CSS support on S9300, see Software and Hardware Requirements for the CSS Card Connection Mode and Software and Hardware Requirements on the Service Port Connection Mode in Typical Configuration Examples-Typical CSS Configuration.

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