S5700-LI and S5700S-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.
S5700-LI series switches are classified into S5700-P-LI, S5700-TP-LI, and S5700-X-LI based on their uplink interface types. A stack cannot be set up between S5700-P-LI, S5700-TP-LI, and S5700-X-LI.
S5700S-LI series switches are classified into S5700S-P-LI and S5700S-X-LI based on their uplink interface types. A stack cannot be set up between S5700S-P-LI and S5700S-X-LI.
Among S5700-LI series switches, only the S5700-10P-LI-AC, S5700-10P-PWR-LI-AC, S5700-28P-LI-BAT, S5700-28P-LI-24S-BAT do not support stacking function.
Among S5700S-LI series switches, the S5700S-28P-LI-AC and S5700S-52P-LI-AC do not support stacking function.
Since V200R011C10, S5700-LI and S5700S-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
S5700-P-LI	V200R010 and earlier versions: last two SFP optical ports V200R011 and later versions: last four SFP optical ports	1 m passive SFP+ copper cable 10 m active SFP+ copper cable 3 m and 10 m AOC cables (supported in V200R003 and later versions) 6GE stack optical module (SFP-6GE-LR) and optical fiber (supported in V200R007 and later versions) 0.5 m and 1.5 m SFP+ dedicated stack cable (supported in V200R011C10 and later versions)	Using a 10 m SFP+ active high-speed copper: 5 Gbit/s Using other stack cable: 2.5 Gbit/s	Any models of the S5700-P-LI series can set up a stack. V200R010 and earlier versions: A switch supports a maximum of two logical stack ports, and each logical stack port contains one stack member port. A switch supports a maximum of two stack member ports. V200R011 and later versions: A switch supports a maximum of two logical stack ports, and each logical stack port contains one or two stack member ports. A switch supports a maximum of four stack member ports. When one logical stack port contains two stack member ports, the logical stack port can contain only stack member ports 1 and 2, or 3 and 4.
S5700-TP-LI	Two SFP optical ports	1 m passive SFP+ copper cable 10 m active SFP+ copper cable 3 m and 10 m AOC cables 6GE stack optical module (SFP-6GE-LR) and optical fiber (supported in V200R007 and later versions) 0.5 m and 1.5 m SFP+ dedicated stack cable (supported in V200R011C10 and later versions)	Using a 10 m SFP+ active high-speed copper: 5 Gbit/s Using other stack cable: 2.5 Gbit/s	Any models of the S5700-TP-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 two service ports as stack member ports.
S5700-X-LI	Four SFP+ optical ports	1 m passive SFP+ copper cable 3 m passive SFP+ copper cable 5 m passive SFP+ copper cable (supported in V200R009 and later versions) 10 m active SFP+ copper cable 3 m and 10 m AOC cables (supported in V200R003 and later versions) 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 S5700-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.
S5700S-P-LI	Two SFP optical ports	1 m SFP+ passive high-speed copper cables 10 m SFP+ active high-speed copper cables 3 m and 10 m AOC cables 6GE stack optical module (SFP-6GE-LR) and optical fiber 0.5 m and 1.5 m SFP+ dedicated stack cables (supported in V200R011C10 and later versions)	Using a 10 m SFP+ active high-speed copper: 5 Gbit/s Using other stack cable: 2.5 Gbit/s	Any models of the S5700S-P-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 two service ports as stack member ports.
S5700S-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 cables 3 m and 10 m AOC cables 10GE SFP+ optical module and optical fiber 0.5 m and 1.5 m SFP+ dedicated stack cables (supported in V200R011C10 and later versions)	10 Gbit/s	Any models of the S5700S-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 on S5700S-X-LI, 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.