S5710-X-LI Service Port Stacking Support

For the cables that can be used as stack cables, see "Cables" in the Hardware Description. Using other cables may cause exceptions in the stack system, for example, frequent error-down events on stack ports.
Combo ports cannot function as stack member ports.
For stacking-supported service ports, some of them can be used as stack ports, whereas some can be used as ordinary service ports.
Since V200R011C10, S5710-X-LI series switches can set up stacks in service port stacking mode using dedicated stack cables.
The number of stacked switches is recommended to be 2 to 5.

**Table 1** Service port stacking support
Device Series	Port Supporting Stacking	Stack Cable	Rate of a Single Port	Remarks
S5710-X-LI	Four SFP+ optical ports	1 m and 3 m SFP+ passive high-speed copper cables 5 m SFP+ passive high-speed copper cables (supported in V200R009 and later versions) 10 m SFP+ active high-speed copper cable 3 m and 10 m AOC cables 10GE SFP+ optical module and optical fiber 0.5 m and 1.5 m SFP+ dedicated stack cable (supported in V200R011C10 and later versions)	10 Gbit/s	Any models of the S5710-X-LI series can set up a stack. A switch supports a maximum of two logical stack ports, and each logical stack port contains one or two stack member ports. Each switch can use a maximum of four service ports as stack member ports. When a logical stack port contains two stack member ports, the logical stack port can contain only stack member ports 1 and 2 or stack member ports 3 and 4. Since V200R010, if stack member ports are connected using 1 m or 3 m SFP+ passive high-speed copper cables, their working speed can be increased to 12 Gbit/s using the stack port speed command. After their working speed is increased to 12 Gbit/s, switches using these ports cannot set up a stack with switches using ports with the working speed 10 Gbit/s.