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Determining the Stack Con...

Determining the Stack Connection Support and Mode

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Determining the Stack Connection Support and Mode

Stack Version Requirements

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:Switches can set up a stack through stack card connection and service port connection based on stack port types. Service port connections are classified into ordinary and dedicated cable connections based on cable types.

  • Ordinary cable connection: Switches use optical cables, network cables, and high-speed cables to set up a stack.

  • Dedicated cable connection: Switches use dedicated stack cables to set up a stack. This connection mode is also called zero-configuration stacking.

Table 4-3  Applicable product models and versions

Product

Software Version

Stack Connection Mode

Product Model

S2700SINot supported-

All S2700SI switches do not support stacking.

S2710SI

V100R006(C03&C05)

Service port connection using ordinary cables

All S2710SI switches support stacking.

S2700EI

V100R005C01, V100R006(C00&C01&C03&C05)

Service port connection using ordinary cablesS2700-9TP-EI-AC, S2700-9TP-EI-DC, S2700-9TP-PWR-EI, S2700-18TP-EI-AC, S2700-26TP-EI-AC, S2700-26TP-EI-DC, and S2700-26TP-PWR-EI do not support stacking, whereas other models support.
S2720EIVersions supporting service port connection using ordinary cables:

V200R006C10, V200R009C00, V200R010C00, V200R011C10, V200R012C00, V200R013C00

Versions supporting service port connection using dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S2720EI switches support stacking.

S2750EIVersions supporting service port connection using ordinary cables:

V200R003C00, V200R005C00SPC300, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00

Versions supporting service port connection using dedicated cables:

V200R011C10 and V200R012C00

Service port connections using ordinary and dedicated cables

All S2750EI switches support stacking.

S3700SI

V100R005C01, V100R006(C00&C01&C03&C05)

Service port connection using ordinary cables

All S3700SI switches support stacking.

S3700EI

V100R005C01, V100R006(C00&C01&C03&C05)

Service port connection using ordinary cables

All S3700EI switches support stacking.

S3700HINot supported-

All S3700HI switches do not support stacking..

S5700EI

V100R005C01, V100R006(C00&C01), V200R001(C00&C01), V200R002C00, V200R003C00, V200R005(C00&C01&C02&C03)

Stack card connection

All S5700EI switches support stacking.

S5700SI

V100R005C01, V100R006C00, V200R001C00, V200R002C00, V200R003C00, V200R005C00

Stack card connectionS5700-26X-SI-12S-AC does not support stacking, whereas other models support.
S5700HIV200R003C00, V200R005C00Service port connection using ordinary cables

All S5700HI switches support stacking.

S5700LIVersions supporting service port connection using ordinary cables:

V200R001C00, V200R002C00, V200R003(C00&C02&C10), V200R005C00SPC300, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00

Versions supporting service port connection using dedicated cables:

V200R011C10 and V200R012C00

Service port connections using ordinary and dedicated cablesS5700-10P-LI-AC, S5700-10P-PWR-LI-AC, S5700-28P-LI-BAT, and S5700-28P-LI-24S-BAT do not support stacking, whereas other models support.
S5700S-LIVersions supporting service port connection using ordinary cables:

V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00

Versions supporting service port connection using dedicated cables:

V200R011C10 and V200R012C00

Service port connections using ordinary and dedicated cablesS5700S-28P-LI-AC and S5700S-52P-LI-AC do not support stacking, whereas other models support.
S5710EI

V200R001C00, V200R002C00, V200R003C00, V200R005(C00&C02)

Service port connection using ordinary cables

All S5710EI switches support stacking.

S5710HIV200R005C03Service port connection using ordinary cables

All S5710HI switches support stacking.

S5710-C-LI

V200R001C00

Stack card connection

All S5710-C-LI switches support stacking.

S5710-X-LIVersions supporting service port connection using ordinary cables:

V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00

Versions supporting service port connection using dedicated cables:

V200R011C10 and V200R012C00

Service port connections using ordinary and dedicated cables

All S5710-X-LI switches support stacking.

S5720LI and S5720S-LIVersions supporting service port connection using ordinary cables:

V200R010C00, V200R011C00, V200R011C10, V200R012(C00&C20), V200R013C00

Versions supporting service port connection using dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S5720LI and S5720S-LI switches support stacking.

S5720SI and S5720S-SIVersions supporting service port connection using ordinary cables:

V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00

Versions supporting service port connection using dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S5720SI and S5720S-SI switches support stacking.

S5720I-SIV200R012C00, V200R013C00Service port connections using ordinary and dedicated cablesS5720I-6X-PWH-SI-AC and S5720I-10X-PWH-SI-AC do not support stacking, whereas other models support.
S5720EI

V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00

Service port connection using ordinary cables: S5720-C-EI, S5720-PC-EI

Stack card connection: S5720-P-EI, S5720-C-EI, S5720-X-EI, S5720-PC-EI

When using the stack card connection mode, note the following:
  • S5720-C-EI and S5720-PC-EI series switches use dedicated stack cards to set up stacks.
  • S5720-X-EI and S5720-P-EI series switches use stack ports fixed on cards to set up stacks.

All S5720EI switches support stacking.

S5720HIVersions supporting service port connection using ordinary cables:

V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00

Versions supporting service port connection using dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S5720HI switches support stacking.

S5730HI

V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S5730HI switches support stacking.

S5730SIVersions supporting service port connection using ordinary cables and dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Versions supporting stack card connection:

V200R012C00 and V200R013C00

Service port connections using ordinary and dedicated cables, and stack card connection

All S5730SI switches support stacking.

S5730S-EIVersions supporting service port connection using ordinary cables and dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Versions supporting stack card connection:

V200R012C00 and V200R013C00

Service port connections using ordinary and dedicated cables, and stack card connection

All S5730S-EI switches support stacking.

S6700EI

V100R006C00, V200R001(C00&C01), V200R002C00, V200R003C00, V200R005(C00&C01&C02)

Service port connection using ordinary cables

All S6700EI switches support stacking.

S6720EIVersions supporting service port connection using ordinary cables:

V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00

Versions supporting service port connection using dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S6720EI switches support stacking.

S6720HI

V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S6720HI switches support stacking.

S6720S-EIVersions supporting service port connection using ordinary cables:

V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00

Versions supporting service port connection using dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S6720S-EI switches support stacking.

S6720SI and S6720S-SIVersions supporting service port connection using ordinary cables:

V200R011C00, V200R011C10, V200R012C00, V200R013C00

Versions supporting service port connection using dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S6720SI and S6720S-SI switches support stacking.

S6720LI and S6720S-LIVersions supporting service port connection using ordinary cables:

V200R011C00, V200R011C10, V200R012C00, V200R013C00

Versions supporting service port connection using dedicated cables:

V200R011C10, V200R012C00, V200R013C00

Service port connections using ordinary and dedicated cables

All S6720LI and S6720S-LI switches support stacking.

S2700 Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • After a UCL group is created using the ucl-group command on S2720EI switches, a stack cannot be set up.
  • Since V200R011C10, S2720EI and S2750EI series switches can set up stacks in service port stacking mode using dedicated stack cables.
  • The number of S2750EIs used to set up a stack is recommended to be 2 to 5.
  • For S2700EIs and S2710SIs, if the stack system works only in Layer 2 and Layer 3 forwarding scenarios, the number of stack member switches is recommended to be 2 to 5. If the stack system works in user access or gateway scenarios that require protocol interaction, the number of stack member switches is recommended to be 2 or 3.
  • The S2720EI has only one model, S2720-28TP-EI-AC, in V200R006C10, V200R009C00, and V200R010C00. The S2720-28TP-EI-AC cannot be upgraded to V200R011C00 and later versions. The number of S2720-28TP-EI-ACs used to set up a stack is recommended to be 2 to 5. In V200R011C10 and later versions, the number of S2720EIs used to set up a stack is recommended to be 2 to 9.

Table 4-4  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S2700EIFirst two GE ports on the front panel

1.5 m SFP stack cable

2.5 Gbit/s

  • Among S2700EI switches, only the S2700-52P-EI-AC and S2700-52P-PWR-EI support the stacking function. A stack can be set up between the S2700-52P-EI-AC and S2700-52P-PWR-EI.

  • 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.

S2710SI

First two GE ports on the front panel

1.5 m SFP stack cable

2.5 Gbit/s

  • Any models of the S2710SI series can set up a stack.

  • 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.

S2720EITwo or four SFP optical ports
  • 1 m passive SFP+ copper cables
  • 3 m and 5 m passive SFP+ copper cables (supported in V200R011C10 and later versions)
  • 10 m active SFP+ copper cable
  • 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 cable (supported in V200R011C10 and later versions)
2.5 Gbit/s
  • Any models of the S2720EI 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. A switch supports a maximum of four stack member ports.

S2750EI

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 cable (supported in V200R011C10 and later versions)
2.5 Gbit/s
  • Any models of the S2750EI series can set up a stack.
  • On an S2750EI switch, only the first and second service ports from the right can be configured as stack member ports of a logical stack port.
  • 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.

S3700 Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • If the stack system works only in Layer 2 and Layer 3 forwarding scenarios, the number of stack member switches is recommended to be 2 to 5. If the stack system works in user access or gateway scenarios that require protocol interaction, the number of stack member switches is recommended to be 2 or 3.

Table 4-5  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S3700EI

First two GE ports on the front panel

1.5 m SFP stack cable

2.5Gbit/s

  • All models support the stacking function except that a stack cannot be set up between the S3752EI and S3728EI.

  • 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.

S3700SI

First two GE ports on the front panel

1.5 m SFP stack cable

2.5Gbit/s

  • All models support the stacking function except that a stack cannot be set up between the S3752SI and S3728SI.

  • 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.

S5700EI and S5700SI Stack Card Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • The number of stacked switches is recommended to be 2 to 5.

Table 4-6  Stack card stacking support

Device Series

Stacking-supported PortStack CableRate of a Single PortRemarks

S5700SI

Two ports on each stack card
  • 1 m PCIe cable
  • 3 m PCIe cable (supported in V200R003 and later versions)
12 Gbit/s
  • All models except S5700-26X-SI-12S-AC support the stacking function.
  • Any models of the S5700SI series can set up a stack.

S5700EI

Two ports on each stack card
  • 1 m PCIe cable
  • 3 m PCIe cable (supported in V200R002 and later versions. In V200R002, only S5700-52C-EI and S5700-28C-EI-24S support the 3 m PCIe cable. In V200R003 and later versions, all the S5700EI series supports the 3 m PCIe cable.)
12 Gbit/sAny models of the S5700EI series can set up a stack.

S5700HI and S5710HI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • The number of stacked switches is recommended to be 2 to 5.

Table 4-7  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S5700HI

10GE ports on front cards: The S5700HI supports ES5D00X2SA00 and ES5D00X4SA00 front cards, which support two and four 10GE SFP+ optical ports respectively.
  • 1 m and 3 m SFP+ passive high-speed copper cables
  • 10 m SFP+ active high-speed copper cables
  • 3 m and 10 m AOC cables
  • 10GE SFP+ optical module and optical fiber

10 Gbit/s

  • Any models of the S5700HI series can set up a stack.
  • A switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most four stack member ports. A switch supports a maximum of four stack member ports.
  • After a front card is replaced by a card of a different type, the stack configurations become ineffective and need to be performed again.
S5710HI8*10GE ports on the front panel
  • 3 m and 10 m AOC cables
  • 10GE SFP+ optical module and optical fiber
10 Gbit/s
  • Any models of the S5710HI series can set up a stack.
  • A switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most four stack member ports. Each switch can use a maximum of eight service ports as stack member ports.

S5720HI and S5730HI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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, S5720HI series switches can set up stacks in service port stacking mode using dedicated stack cables. S5730HIseries switches of all versions can set up stacks in service port stacking mode using dedicated stack cables.
  • The number of stacked switches is recommended to be 2 to 9.

Table 4-8  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S5720HI

Four 10GE SFP+ optical ports

  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s
  • Any models of the S5720HI series can set up a stack.

  • A switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of eight stack member ports. Each switch can use a maximum of eight service ports as stack member ports.

NOTE:

An S5720HI supports the stacking function since V200R009C00. When a member device in a stack is faulty and fails to restart for three consecutive times, the device attempts to roll back to a version earlier than V200R009C00 for restart. When the device restarts successfully after rolling back to a version earlier than V200R009C00, a multi-active situation may occur because the version earlier than V200R009C00 does not support the stacking function. To prevent this situation, you are advised to delete the system software earlier than V200R009C00 from member devices when using S5720HIs to set up a stack.

Optical ports on a 4-port 10GE interface card

  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 10 m SFP+ active high-speed copper cables
  • 3 m and 10 m AOC cables
  • 10GE SFP+ optical module and optical fiber
10 Gbit/s

S5730HI

Four 10GE SFP+ optical ports

  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable
10 Gbit/s
  • Any models of the S5730HI series can set up a stack.
  • Two types of ports among 10GE SFP+ optical ports, 10GE optical ports on an interface card, 10GE electrical ports on an interface card, and 40GE optical ports on an interface card on an S5730HI can both be configured as stack member ports, but each logical stack port contains only the same type of stack member ports.

  • When 10GE ports are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of eight stack member ports. Each switch can use a maximum of twelve service ports as stack member ports.

  • When 40GE ports are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of two stack member ports. Each switch can use a maximum of two service ports as stack member ports.
  • 40GE ports do not support the stacking function after they are split into 10GE ports.

Optical ports on an 8-port 10GE interface card

  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 10 m SFP+ active high-speed copper cables
  • 3 m and 10 m AOC cables
  • 10GE SFP+ optical module and optical fiber
10 Gbit/s

Electrical ports on an 8-port 10GE interface card

Category 6A or higher network cables (If Category 6 cables are used, ensure that the cables meet requirements of TSB-155.)

10 Gbit/s

Optical ports on a 2-port 40GE interface card

  • 1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
  • QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical fiber
  • 10 m QSFP+ AOC cable
40 Gbit/s

S5700LI and S5700S-LI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • S5700LI 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 S5700LI 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, S5700LI 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 4-9  Service port stacking support

Device Series

Port Supporting StackingStack CableRate 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-LITwo 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-LIFour 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-LITwo 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 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 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-LIFour 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 cable (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 speedcommand. 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.

S5710-C-LI Stack Card Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • The number of stacked switches is recommended to be 2 to 5.

Table 4-10  Stack card stacking support

Device Series

Stacking-supported PortStack CableRate of a Single PortRemarks

S5710-C-LI

Two ports on each stack card1 m PCIe cable12 Gbit/sAny models of the S5710-C-LI series can set up a stack.

S5710-X-LI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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 4-11  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S5710-X-LIFour 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.

S5710EI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • The number of stacked switches is recommended to be 2 to 5.

Table 4-12  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S5710EIAny 10GE ports, including the four fixed 10GE SFP+ optical ports on the front panel and ports on the ES5D21X02S00 rear card (A switch supports a maximum of two rear cards, and each card provides two 10GE SFP+ optical ports.)
  • 1 m SFP+ passive high-speed copper cable
  • 3 m SFP+ passive high-speed copper cable
  • 10 m SFP+ active high-speed copper cable
  • 3 m and 10 m AOC cables (supported in V200R003 and later versions)
  • 10GE SFP+ optical module and optical fiber
10 Gbit/s
  • Any models of the S5710EI series can set up a stack.
  • V200R001: A switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most three stack member ports. A switch supports a maximum of four stack member ports.
  • V200R002 and later versions: A switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most four stack member ports. A switch supports a maximum of eight stack member ports.
  • Ports on different rear cards can be added to the same logical stack port, but ports on a rear card and fixed ports on the front panel cannot be added to the same logical stack port.

S5720EI Stack Card Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • S5720EI series switches are classified into S5720-C-EI, S5720-PC-EI, S5720-X-EI, and S5720-P-EI based on their uplink interface types.
  • In V200R009C00 and later versions, if MPLS-incapable S5720EIs exist in a stack, this stack cannot have MPLS enabled. If member devices in a stack are running MPLS services, adding MPLS-incapable S5720EIs to the stack is not allowed. To check whether S5720EIs support MPLS, run the display device capability command.
  • The number of stacked switches is recommended to be 2 to 9.

Table 4-13  Stack card stacking support

Device Series

Port Supporting StackingStack Cable

Remarks

S5720-C-EI and S5720-PC-EI

Two ports on each ES5D21VST000 stack card
  • 1 m, 3 m, 5 m QSFP+ passive high-speed cables
  • QSFP+ optical module (only QSFP-40G-SR4 and QSFP-40G-iSR4 supported) and matching optical fiber
Any models of the S5720EI series can set up a stack.

S5720-X-EI and S5720-P-EI

Two ports fixed on the rear panel
  • 1 m, 3 m, 5 m QSFP+ passive high-speed cables
  • QSFP+ optical module (only QSFP-40G-SR4 and QSFP-40G-iSR4 supported) and matching optical fiber

S5720EI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • In V200R009C00 and later versions, if MPLS-incapable S5720EIs exist in a stack, this stack cannot have MPLS enabled. If member devices in a stack are running MPLS services, adding MPLS-incapable S5720EIs to the stack is not allowed. To check whether S5720EIs support MPLS, run the display device capability command.
  • The number of stacked switches is recommended to be 2 to 9.

Table 4-14  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S5720EI

Optical ports on a 2-port 10GE optical interface card
  • 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
10 Gbit/s
  • Any models of the S5720EI 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.
Electrical ports on a 2-port 10GE electrical interface card

Category 6A or higher network cables (If Category 6 cables are used, ensure that the cables meet requirements of TSB-155.)

10 Gbit/s

S5720LI and S5720S-LI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • After a UCL group is created using the ucl-group command on S5720LI&S5720S-LI switches, a stack cannot be set up.
  • S5720LI series switches are classified into S5720-P-LI, S5720-TP-LI, and S5720-X-LI based on their uplink interface types.
  • S5720S-LI series switches are classified into S5720S-P-LI, S5720S-TP-LI, and S5720S-X-LI based on their uplink interface types.
  • S5720-28X-LI-24S-AC, S5720-28X-LI-24S-DC, and S5720S-28X-LI-24S-AC do not support electrical ports. Therefore, they cannot set up stacks using electrical ports.
  • MultiGE port on the S5720-28X-PWH-LI-AC cannot be configured as a stack member port.
  • If you want to set up a mixed stack of S5720SV2-28P-LI-AC and other switch models, only a mixed stack of the S5720SV2-28P-LI-AC and S5720SV2-52P-LI-AC is supported.
  • In a stack set up using electrical interfaces, when adding a new member switch or replacing a faulty member switch, to prevent a packet loop caused by a failure to add the new member in case of insufficient ACL resources, you are advised to configure the service ports used in both the new switch and the stack as stack ports before connecting the switch to the stack using cables.
  • Since V200R011C10, S5720LI and S5720S-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 9.

Table 4-15  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S5720-P-LINOTE:

Supported only in V200R011.

Four SFP optical ports (Before the device has the license loaded)
  • 1 m, 3 m, and 5 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 cable (supported in V200R011C10 and later versions)
2.5 Gbit/s
  • A stack can be set up between S5720-P-LI, S5720-TP-LI, and S5720-X-LI, but a stack cannot be set up between the S5720LI and S5720S-LI. When different models need to set up a stack, they must use stack ports of the same type. That is, all of them either use electrical ports on the front panel or use SFP or SFP+ optical ports.
  • When SFP optical ports are used as stack ports, 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.
  • When electrical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.On a switch with 48 electrical ports, the first and last 24 ports must be added to two separate logical stack ports to ensure that a stack can be set up successfully.
  • Before the device has the license loaded, four optical ports are GE ports, and each port works at 2.5 Gbit/s in stack scenarios. After the device has the license loaded and restarts, four optical ports are XGE ports, and each port works at 10 Gbit/s in stack scenarios.
  • After the device has the license loaded and restarts, 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.
Four SFP+ optical ports (After the device has the license loaded and restarts)
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable (supported in V200R011C10 and later versions)

10 Gbit/s

Electrical ports on the front panel

Category 5 or higher network cable

1 Gbit/s
S5720-TP-LITwo SFP optical ports
  • 1 m, 3 m, and 5 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 cable (supported in V200R011C10 and later versions)
2.5 Gbit/s
  • A stack can be set up between S5720-P-LI, S5720-TP-LI, and S5720-X-LI, but a stack cannot be set up between the S5720LI and S5720S-LI. When different models need to set up a stack, they must use stack ports of the same type. That is, all of them either use electrical ports on the front panel or use SFP or SFP+ optical ports.
  • When SFP optical ports are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of two stack member ports. Each switch can use a maximum of two service ports as stack member ports.
  • When electrical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of eight stack member ports.On a switch with 48 electrical ports, the first and last 24 ports must be added to two separate logical stack ports to ensure that a stack can be set up successfully.
Electrical ports on the front panel

Category 5 or higher network cable

1 Gbit/s
S5720-X-LIFour SFP+ optical ports
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s
  • A stack can be set up between S5720-P-LI, S5720-TP-LI, and S5720-X-LI, but a stack cannot be set up between the S5720LI and S5720S-LI. When different models need to set up a stack, they must use stack ports of the same type. That is, all of them either use electrical ports on the front panel or use SFP or SFP+ optical ports.
  • When SFP+ optical ports are used as stack ports, 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.
  • When electrical ports or downlink SFP optical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.On a switch with 48 electrical ports, the first and last 24 ports must be added to two separate logical stack ports to ensure that a stack can be set up successfully.
  • Since V200R010, several new S5720-X-LI models with downlink SFP optical ports are available. These switches allow using downlink SFP optical ports on the front panel as stack member ports. If one member switch uses downlink SFP optical ports as stack member ports, all the other member switches must also use downlink SFP optical ports as stack member ports.
  • 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.
  • If S5720-X-LI switches are stacked with S5720-P-LI switches that do not have the license loaded and with S5720-TP-LI switches using optical ports, run the stack port speed command on the S5720-X-LI switches to reduce the working speed of stack member ports to 2.5 Gbit/s.
Downlink SFP optical ports on the front panel

GE SFP optical module and optical fiber

1 Gbit/s
Electrical ports on the front panel

Category 5 or higher network cable

1 Gbit/s
S5720S-P-LIFour SFP optical ports
  • 1 m, 3 m, and 5 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 cable (supported in V200R011C10 and later versions)
2.5 Gbit/s
  • A stack can be set up between S5720S-P-LI, S5720S-TP-LI, and S5720S-X-LI, but a stack cannot be set up between the S5720S-LI and S5720LI. When different models need to set up a stack, they must use stack ports of the same type. That is, all of them either use electrical ports on the front panel or use SFP or SFP+ optical ports.
  • When SFP optical ports are used as stack ports, 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.
  • When electrical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.On a switch with 48 electrical ports, the first and last 24 ports must be added to two separate logical stack ports to ensure that a stack can be set up successfully.
Electrical ports on the front panel

Category 5 or higher network cable

1 Gbit/s
S5720S-TP-LITwo SFP optical ports
  • 1 m, 3 m, and 5 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 cable (supported in V200R011C10 and later versions)
2.5 Gbit/s
  • A stack can be set up between S5720S-P-LI, S5720S-TP-LI, and S5720S-X-LI, but a stack cannot be set up between the S5720S-LI and S5720LI. When different models need to set up a stack, they must use stack ports of the same type. That is, all of them either use electrical ports on the front panel or use SFP or SFP+ optical ports.
  • When SFP optical ports are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of two stack member ports. Each switch can use a maximum of two service ports as stack member ports.
  • When electrical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of eight stack member ports.On a switch with 48 electrical ports, the first and last 24 ports must be added to two separate logical stack ports to ensure that a stack can be set up successfully.
Electrical ports on the front panel

Category 5 or higher network cable

1 Gbit/s
S5720S-X-LIFour SFP+ optical ports
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s
  • A stack can be set up between S5720S-P-LI, S5720S-TP-LI, and S5720S-X-LI, but a stack cannot be set up between the S5720S-LI and S5720LI. When different models need to set up a stack, they must use stack ports of the same type. That is, all of them either use electrical ports on the front panel or use SFP or SFP+ optical ports.
  • When SFP+ optical ports are used as stack ports, 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.
  • When electrical ports or downlink SFP optical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.On a switch with 48 electrical ports, the first and last 24 ports must be added to two separate logical stack ports to ensure that a stack can be set up successfully.
  • Since V200R010, several new S5720S-X-LI model with downlink SFP optical ports are available. These switches allow using downlink SFP optical ports on the front panel as stack member ports. If one member switch uses downlink SFP optical ports as stack member ports, all the other member switches must also use downlink SFP optical ports as stack member ports.
  • 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.
  • If S5720S-X-LI switches are stacked with S5720S-P-LI and S5720S-TP-LI switches using optical ports, run the stack port speed command on the S5720S-X-LI switches to reduce the working speed of stack member ports to 2.5 Gbit/s.
Downlink SFP optical ports on the front panel

GE SFP optical module and optical fiber

1 Gbit/s
Electrical ports on the front panel

Category 5 or higher network cable

1 Gbit/s

S5720SI, S5720S-SI, and S5720I-SI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • After a UCL group is created using the ucl-group command on S5720SI&S5720S-SI&S5720I-SI switches, a stack cannot be set up.
  • S5720SI series switches are classified into S5720-P-SI and S5720-X-SI based on their uplink interface types.
  • S5720S-SI series switches are classified into S5720S-P-SI and S5720S-X-SI based on their uplink interface types.
  • MultiGE ports of an S5720-14X-PWH-SI-AC cannot be used as stack member ports.
  • In V200R010 and later versions, any models of S5720I-SI, S5720SI and S5720S-SI can set up a stack. When different models need to set up a stack, they must use stack ports of the same type. That is, they either all use electrical ports on front panels or all use SFP+ or SFP optical ports. In V200R009 and earlier versions, S5720-14X-PWH-SI-AC cannot set up a stack with S5720S-SI or other S5720SI models. The S5720S-SI can set up a stack with all S5720SI models except S5720-14X-PWH-SI-AC.
  • Since V200R010, two SFP+ optical ports of an S5720-14X-PWH-SI-AC can be used as stack member ports. If SFP+ optical ports of an S5720-14X-PWH-SI-AC have been configured as stack member ports but the switch needs to be downgraded to V200R009 or an earlier version, delete the stack member port configuration of SFP+ optical ports before the downgrade. If this configuration is not deleted before the downgrade, a stack that cannot run normally will be set up after the downgrade. You need to disable the stacking function to delete the stack member port configuration of SFP+ optical ports.
  • Among S5720I-SI series switches, the S5720I-6X-PWH-SI-AC and S5720I-10X-PWH-SI-AC do not support the stacking function.
  • In a stack set up using electrical interfaces, when adding a new member switch or replacing a faulty member switch, to prevent a packet loop caused by a failure to add the new member in case of insufficient ACL resources, you are advised to configure the service ports used in both the new switch and the stack as stack ports before connecting the switch to the stack using cables.
  • Since V200R011C10, S5720SI and S5720S-SI series switches can set up stacks in service port stacking mode using dedicated stack cables. S5720I-SI series switches of all versions can set up stacks in service port stacking mode using dedicated stack cables.
  • The number of stacked switches is recommended to be 2 to 9.

Table 4-16  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S5720-P-SI and S5720S-P-SIFour 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s
  • When SFP optical ports are used as stack ports, 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.
  • When electrical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.On a switch with 48 electrical ports, the first and last 24 ports must be added to two separate logical stack ports to ensure that a stack can be set up successfully.

  • 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.

Electrical ports on the front panel

Category 5 or higher network cable

1 Gbit/s
S5720-X-SI and S5720S-X-SIFour 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s
  • When SFP+ optical ports are used as stack ports, 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.
  • When electrical ports or downlink SFP optical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.On a switch with 48 electrical ports, the first and last 24 ports must be added to two separate logical stack ports to ensure that a stack can be set up successfully.
  • Since V200R010, several new S5720-X-SI models with downlink SFP optical ports are available. These switches allow using downlink SFP optical ports on the front panel as stack member ports. If one member switch uses downlink SFP optical ports as stack member ports, all the other member switches must also use downlink SFP optical ports as stack member ports.

  • 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.

Electrical ports on the front panel

Category 5 or higher network cable

1 Gbit/s
Downlink SFP optical ports on the front panel

GE SFP optical module and optical fiber

1 Gbit/s
S5720I-SIFour SFP+ optical ports
  • 3 m SFP+ passive high-speed copper cables
  • 10GE SFP+ industrial optical module and optical fiber
  • 0.5 m and 1.5 m SFP+ dedicated stack cable
10 Gbit/s
  • S5720I-SI series can set up stacks with any S5720SI and S5720S-SI models. When different models need to set up a stack, these models must use stack ports of the same type. That is, they either all use electrical ports on front panels or all use SFP+ optical ports.
  • When SFP+ optical ports are used as stack ports, 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 electrical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.
  • If stack member ports are connected using 3 m SFP+ passive high-speed copper cables, their working speed can be increased to 12 Gbit/s using the stack port speedcommand. 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.
Electrical ports on the front panel

Category 5 or higher network cable

1 Gbit/s

S5730SI Stack Card Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • Stack card stacking and service port stacking (including ordinary cable stacking and dedicated stack cable stacking) cannot be used together. If service port configurations are correct, service port stacking is preferred over stack card stacking. If stack card stacking has been used to set up a stack, to use service port stacking to set up the stack, you need to restart the stack to make service port stacking takes effect after configuring service port stacking.
  • 40GE ports on the ES5D21VST000 stack card cannot be used together with 40GE ports on the ES5D21Q04Q01 card to set up a stack.
  • The number of stacked switches is recommended to be 2 to 9.

Table 4-17  Stack card stacking support

Device Series

Port Supporting StackingStack Cable

Remarks

S5730SI

Two stack ports on the ES5D21VST000 dedicated stack card

  • 1 m, 3 m, 5 m QSFP+ passive high-speed cables
  • QSFP+ optical module (only QSFP-40G-SR4 and QSFP-40G-iSR4) and fiber
  • 10 m QSFP+ AOC cable

Any models of the S5730SI can set up a stack.

S5730SI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • Stack card stacking and service port stacking (including ordinary cable stacking and dedicated stack cable stacking) cannot be used together. If service port configurations are correct, service port stacking is preferred over stack card stacking. If stack card stacking has been used to set up a stack, to use service port stacking to set up the stack, you need to restart the stack to make service port stacking takes effect after configuring service port stacking.
  • 40GE ports on interface card cannot be used together with 40GE ports on the ES5D21VST000 stack card to set up a stack.
  • S5730SI series switches of all versions can set up stacks in service port stacking mode using dedicated stack cables.
  • The number of stacked switches is recommended to be 2 to 9.

Table 4-18  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S5730SI

10GE optical ports on the front panel
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable
10Gbit/s
  • Any models of the S5730SI series can set up a stack.
  • When 40GE optical ports are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most four stack member ports. A switch supports a maximum of four stack member ports.
  • When 10GE ports are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of eight stack member ports. On a switch with 68 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.
  • Two types of ports on an S5730SI can both be configured as stack member ports, but each logical stack port contains only the same type of stack member ports.
  • 40GE ports do not support the stacking function after they are split into 10GE ports.
  • If stack member ports on the front panel are connected using 1 m, 3 m, or 5 m QSFP+ passive high-speed copper cables, their working speed can be increased to 48 Gbit/s using the stack port speed command. After their working speed is increased to 48 Gbit/s, switches using these ports cannot set up a stack with switches using ports with the working speed 40 Gbit/s.
40GE ports on interface card
  • 1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
  • QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical fiber
  • 10 m QSFP+ AOC cable
40Gbit/s

S5730S-EI Stack Card Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • Stack card stacking and service port stacking (including ordinary cable stacking and dedicated stack cable stacking) cannot be used together. If service port configurations are correct, service port stacking is preferred over stack card stacking. If stack card stacking has been used to set up a stack, to use service port stacking to set up the stack, you need to restart the stack to make service port stacking takes effect after configuring service port stacking.
  • 40GE ports on the ES5D21VST000 stack card cannot be used together with 40GE ports on the ES5D21Q04Q01 card to set up a stack.
  • The number of stacked switches is recommended to be 2 to 9.

Table 4-19  Stack card stacking support

Device Series

Port Supporting StackingStack Cable

Remarks

S5730S-EI

Two stack ports on the ES5D21VST000 dedicated stack card

  • 1 m, 3 m, 5 m QSFP+ passive high-speed cables
  • QSFP+ optical module (only QSFP-40G-SR4 and QSFP-40G-iSR4) and fiber
  • 10 m QSFP+ AOC cable

Any models of the S5730S-EI can set up a stack.

S5730S-EI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • Stack card stacking and service port stacking (including ordinary cable stacking and dedicated stack cable stacking) cannot be used together. If service port configurations are correct, service port stacking is preferred over stack card stacking. If stack card stacking has been used to set up a stack, to use service port stacking to set up the stack, you need to restart the stack to make service port stacking takes effect after configuring service port stacking.
  • 40GE ports on interface card cannot be used together with 40GE ports on the ES5D21VST000 stack card to set up a stack.
  • S5730S-EI series switches of all versions can set up stacks in service port stacking mode using dedicated stack cables.
  • The number of stacked switches is recommended to be 2 to 9.

Table 4-20  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S5730S-EI

10GE optical ports on the front panel
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable
10Gbit/s
  • Any models of the S5730S-EI series can set up a stack.
  • When 40GE optical ports are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most four stack member ports. A switch supports a maximum of four stack member ports.
  • When 10GE ports are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of eight stack member ports. On a switch with 68 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.
  • Two types of ports on an S5730S-EI can both be configured as stack member ports, but each logical stack port contains only the same type of stack member ports.
  • 40GE ports do not support the stacking function after they are split into 10GE ports.
  • If stack member ports on the front panel are connected using 1 m, 3 m, or 5 m QSFP+ passive high-speed copper cables, their working speed can be increased to 48 Gbit/s using the stack port speed command. After their working speed is increased to 48 Gbit/s, switches using these ports cannot set up a stack with switches using ports with the working speed 40 Gbit/s.
40GE ports on interface card
  • 1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
  • QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical fiber
  • 10 m QSFP+ AOC cable
40Gbit/s

S6700EI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • The number of stacked switches is recommended to be 2 to 5.

Table 4-21  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S6700EI

All 10GE ports on the switch
  • 1 m SFP+ passive high-speed copper cable
  • 3 m SFP+ passive high-speed copper cable
  • 5 m SFP+ passive high-speed copper cable (supported in V200R005C02)
  • 10 m SFP+ active high-speed copper cable (supported in V200R001 and later versions)
  • 3 m and 10 m AOC cables (supported in V200R003 and later versions)
  • 10GE SFP+ optical module and optical fiber
10 Gbit/s
  • Any models of the S6700EI series can set up a stack. The 10GE ports do not support the stacking function when they work as GE ports.
  • A switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of eight stack member ports. A switch supports a maximum of eight stack member ports.
  • On an S6700EI switch, a maximum of eight service ports can be configured as stack member ports. Four service ports with contiguous IDs must be configured together, and the last ID of the service ports must be a multiple of 4. For example, ports 1 to 4, or 5 to 8 can be configured as stack member ports together, but ports 2 to 5 cannot. When one of the four service ports is configured as a stack member port, the other three service ports are automatically configured as stack member ports.

S6720HI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • For stacking-supported service ports, some of them can be used as stack ports, whereas some can be used as ordinary service ports.
  • The first 12 10GE ports of the S6720-50L-HI-48S cannot be used as stack member ports.
  • S6720HI series switches of all versions can set up stacks in service port stacking mode using dedicated stack cables.
  • The number of stacked switches is recommended to be 2 to 9.

Table 4-22  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S6720HI

10GE ports on the front panel
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable
10 Gbit/s
  • Any models of the S6720HI series can set up a stack.
  • Two types of ports on an S6720HI can both be configured as stack member ports, but each logical stack port contains only the same type of stack member ports.
  • When 10GE ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.
  • When 40GE ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most six stack member ports. Each switch can use a maximum of six service ports as stack member ports.
  • When 100GE ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of two stack member ports. Each switch can use a maximum of two service ports as stack member ports.
  • Only the last 16 10GE ports on the front panel can be used to set up a stack using dedicated stack cables.
  • 40GE ports do not support the stacking function after they are split into 10GE ports.
  • When 100GE ports are used as stack member ports and are connected using 1 m, 3 m, and 5 m QSFP+ passive cables or QSFP+ optical modules (QSFP-40G-SR-BD not supported) and fibers, you can run the stack port speedcommand to reduce their working speed from 100 Gbit/s to 40 Gbit/s. After their working speed is reduced to 40 Gbit/s, switches using these ports can set up a stack with switches using ports working at 40 Gbit/s and cannot set up a stack with switches using ports working at 100 Gbit/s.
40GE ports on the front panel
  • 1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
  • QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical fiber
  • 10 m QSFP+ AOC cable
40 Gbit/s
100GE ports on the front panel
  • 1 m, 3 m, and 5 m QSFP28 high-speed copper cables
  • 10 m QSFP28 AOC cables
  • QSFP28 optical module and optical fiber
100Gbit/s

S6720EI and S6720S-EI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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.
  • Ports on the ES5D21X08S00 card of S6720EI series switches cannot function as stack ports.
  • Since V200R011C10, S6720EI and S6720S-EI 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 9.

Table 4-23  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S6720EI

10GE ports on the front panel
  • 1 m and 3 m SFP+ passive high-speed copper cables
  • 5 m SFP+ passive high-speed copper cables (supported in V200R009C00 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s
  • A stack can be set up between S6720EI and S6720S-EI if these switches use the same stack port types. That is, all of them either use 10GE ports or use 40GE ports.
  • When 10GE ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.
  • On an S6720EI switch, when 40GE ports are used as stack member ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most six stack member ports. Each switch can use a maximum of six service ports as stack member ports.
  • On an S6720S-EI switch, when 40GE ports are used as stack member ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of two stack member ports. Each switch can use a maximum of two service ports as stack member ports.
  • 40GE ports do not support the stacking function after they are split into 10GE ports.
  • Only the last 16 10GE ports on the front panel can be used to set up a stack using dedicated stack cables.
  • On the S6720EI and S6720S-EI, every four of 10GE interfaces on the left are added to one group. For example, 10GE interfaces numbered 1 to 4 can be added to one group, but 10GE interfaces numbered 2 to 5 cannot. That is, the number of the last 10GE interface in each group must be the multiple of 4. If you configure any interface in each group as a physical member interface, configurations on the other three interfaces in the group will be lost and the three interfaces cannot be used as service ports.
40GE ports on the front panel and Ports on a 4-port 40GE rear interface card
  • 1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
  • QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical fiber
  • 10 m QSFP+ AOC cable (supported in V200R009C00 and later versions)
40 Gbit/s

S6720S-EI

10GE ports on the front panel
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s
40GE ports on the front panel
  • 1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
  • QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical fiber
  • 10 m QSFP+ AOC cable
40 Gbit/s

S6720LI and S6720S-LI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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, S6720LI and S6720S-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 9.

Table 4-24  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S6720LI and S6720S-LI

40GE ports on the front panel
  • 1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
  • QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical fiber
  • 10 m QSFP+ AOC cable
40 Gbit/s
  • A stack can be set up between S6720LI models and between S6720S-LI models, but a stack cannot be set up between S6720LI and S6720S-LI.
  • When 40GE ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of two stack member ports. Each switch can use a maximum of two service ports as stack member ports.
  • When 10GE optical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.
  • Two rate of ports on an S6720LI or S6720S-LI can both be configured as stack member ports, but each logical stack port contains only the same rate of stack member ports.
  • 40GE ports do not support the stacking function after they are split into 10GE ports.
  • If stack member ports on the front panel are connected using 1 m, 3 m, or 5 m QSFP+ passive high-speed copper cables, their working speed can be increased to 48 Gbit/s using the stack port speed command. After their working speed is increased to 48 Gbit/s, switches using these ports cannot set up a stack with switches using ports with the working speed 40 Gbit/s.
  • Only the last 16 10GE ports on the front panel can be used to set up a stack using dedicated stack cables.
10GE optical ports on the front panel
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s

S6720SI and S6720S-SI Service Port Stacking Support

imgDownload?uuid=91b0e2452a1c416da8501f7 NOTE:

  • 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, S6720SI and S6720S-SI 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 9.

Table 4-25  Service port stacking support

Device Series

Port Supporting StackingStack CableRate of a Single Port

Remarks

S6720SI

40GE ports on the front panel and interface card
  • 1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
  • QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical fiber
  • 10 m QSFP+ AOC cable
40 Gbit/s
  • A stack can be set up between S6720SI models, but a stack cannot be set up between S6720SI and S6720S-SI.
  • When 40GE ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of two stack member ports. Each switch can use a maximum of two service ports as stack member ports.
  • When electrical ports or 10GE optical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.
  • Two types of ports among 40GE ports, 10GE optical ports, and electrical ports on an S6720SI can both be configured as stack member ports, but each logical stack port contains only the same type of stack member ports.
  • 40GE ports do not support the stacking function after they are split into 10GE ports.
  • If stack member ports on the front panel are connected using 1 m, 3 m, or 5 m QSFP+ passive high-speed copper cables, their working speed can be increased to 48 Gbit/s using the stack port speed command. After their working speed is increased to 48 Gbit/s, switches using these ports cannot set up a stack with switches using ports with the working speed 40 Gbit/s.
  • Only the rate of 40GE interfaces on the front panel can be increased to 48 Gbit/s.
  • Only the last 16 10GE ports on the front panel can be used to set up a stack using dedicated stack cables.
10GE optical ports on the front panel and interface card
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s
Electrical ports on the front panel

Category 6A or higher network cables (If Category 6 cables are used, ensure that the cables meet requirements of TSB-155.)

10 Gbit/s

S6720S-SI

40GE ports on the front panel
  • 1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
  • QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical fiber
  • 10 m QSFP+ AOC cable
40 Gbit/s
  • A stack can be set up between S6720S-SI models, but a stack cannot be set up between S6720S-SI and S6720SI.
  • When 40GE ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports a maximum of two stack member ports. Each switch can use a maximum of two service ports as stack member ports.
  • When 10GE optical ports on the front panel are used as stack ports, a switch supports a maximum of two logical stack ports, and each logical stack port supports at least one stack member port and at most eight stack member ports. A switch supports a maximum of 16 stack member ports.
  • Two types of ports on an S6720S-SI can both be configured as stack member ports, but each logical stack port contains only the same type of stack member ports.
  • 40GE ports do not support the stacking function after they are split into 10GE ports.
  • If stack member ports on the front panel are connected using 1 m, 3 m, or 5 m QSFP+ passive high-speed copper cables, their working speed can be increased to 48 Gbit/s using the stack port speed command. After their working speed is increased to 48 Gbit/s, switches using these ports cannot set up a stack with switches using ports with the working speed 40 Gbit/s.
  • Only the last 16 10GE ports on the front panel can be used to set up a stack using dedicated stack cables.
10GE optical ports on the front panel
  • 1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
  • 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 cable (supported in V200R011C10 and later versions)
10 Gbit/s

See more please click 

https://support.huawei.com/enterprise/en/doc/EDOC1000069520/9aadccc0/comprehensive-configuration-examples


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