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Configuration Guide - Device Management

S1720, S2700, S5700, and S6720 V200R011C10

This document describes the principles and configurations of the Device Management features, and provides configuration examples of these features.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Licensing Requirements and Limitations for PoE

Licensing Requirements and Limitations for PoE

Involved Network Elements

Powered devices (PDs)

Licensing Requirements

PoE is a basic feature of a switch and is not under license control.

Version Requirements

NOTE:

Only switches with "PWR" or "PWH" in the device names are PoE switches. Whether switches support PoE depends on the hardware. Non-PoE switches cannot be changed to PoE switches through software upgrades.

Table 8-3  Applicable product models and versions

Product

Product Model

Software Version

S1700 S1720GFR Not supported

S1720GW and S1720GWR

V200R010C00, V200R011C00, V200R011C10

S1720GW-E and S1720GWR-E

V200R010C00, V200R011C00, V200R011C10

S1720X and S1720X-E

Not supported
Other S1700 models

Models that cannot be configured using commands. For details about features and versions, see S1700 Documentation Bookshelf.

S2700 S2700SI Not supported
S2710SI

V100R006(C03&C05)

S2700EI

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

S2720EI V200R011C10
S2750EI

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

S3700 S3700SI

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

S3700EI

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

S3700HI Not supported
S5700 S5700LI

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

S5700S-LI V200R008C00, V200R009C00, V200R010C00, V200R011C00, and V200R011C10
S5710-C-LI

V200R001C00

S5710-X-LI Not supported
S5720LI and S5720S-LI

V200R010C00, V200R011C00, V200R011C10

S5700SI

V100R005C01, V100R006C00, V200R001C00, V200R002C00, V200R003C00, V200R005C00

S5700EI

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

S5710EI

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

S5720EI

V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10

S5700HI Not supported
S5710HI

V200R003C00, V200R005(C00&C02&C03)

S5720HI

V200R006C00, V200R007(C00&C10), V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10

S5720SI

V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10

S5720S-SI Not supported
S5730SI

V200R011C10

S5730S-EI

V200R011C10

S6700 S6700EI Not supported
S6720EI Not supported
S6720S-EI Not supported
S6720SI

V200R011C00, V200R011C10

S6720S-SI Not supported
S6720LI and S6720S-LI Not supported
NOTE:
To know details about software mappings, see Hardware Query Tool.

Feature Limitations

PoE power supplies supported by the switch
  • Downlink electrical interfaces of PoE switches provide PoE power and each interface supports a maximum of 200 m power supply distance and provides a maximum of 30 W, except that: Each MultiGE interface of the S5720-14X-PWH-SI-AC provides a maximum of 90 W power; each MultiGE interface of the S5720-28X-PWH-LI-AC, each interface of the S6720SI, and interfaces GE0/0/1 to GE0/0/12 of the S5720-16X-PWH-LI-AC provide a maximum of 60 W power. The PoE switch can transmit both current and data on a pair of signal cables.

  • For the available PoE power, maximum number of ports, and power module type provided by different PoE switch models, see "Chassis" in the Hardware Description of the specific switch model. PoE switches have "PWR" or "PWH" in the product names. For details about PoE power supply configuration, see "Power Supply Configuration" of the specific switch model.

PoE function
  • The switch supports power supply capability negotiation using the Link Layer Discovery Protocol (LLDP).
  • The switch supports perpetual power supply and fast power-on.
  • If a switch supports PoE, its PoE feature is not affected after it joins a stack.

Restrictions on the PoE function
  • The PoE models of the S1720GW, S1720GWR, S1720GW-E, S1720GWR-E, S2720EI, S5700LI, S5700S-LI, S5710-C-LI, S5720LI, S5720S-LI, S2750EI, S5710EI, S5720EI, S5720SI, S5720HI, S5710HI, S5730SI, S5730S-EI, and S6720SI series can still power the attached PDs when they are reboot using the reboot command. After rebooting, a PD will be powered off and then on when all the following conditions are met:
    1. The PD can be powered on successfully.
    2. Forcible power supply has been enabled on the port connected to the PD or any of the other three ports that share the same PSE chip with this port, but the forcible power supply configuration has not been saved before the reboot.
  • If the switch power is sufficient but PDs cannot be powered on, try to use the poe force-power command to forcibly power on the PDs connected to interfaces.
  • On the S5720-16X-PWH-LI-AC, S5720-28X-PWH-LI-AC, and S6720SI, forcible PoE power supply and PD compatibility check are mutually exclusive, and different power supply modes are mutually exclusive on PoE interfaces.
  • In V200R011C00 and earlier versions, if you run the poe af-inrush enable command in the system view to set the power supply mode to PoE on interfaces and then run the poe bt-inrush enable command in the interface view to set the power supply mode on this interface, the system displays a message to ask you to clear the poe af-inrush enable command configuration. In V200R011C10 and later versions, if you run the poe af-inrush enable command in the interface view to set the power supply mode to PoE on this interface and then run the poe bt-inrush enable command in the interface view to set the power supply mode on this interface, the poe af-inrush enable command configuration is automatically overwritten.

Maximum PoE power supply distance

The maximum PoE power supply distance supported by the S5720-28X-PWH-LI-AC, S6720-32C-PWH-SI-AC, and S6720-32C-PWH-SI is 200 m. The maximum PoE power supply distance supported by other switch models is 100 m.

When switches support a maximum PoE power supply distance of 200 m, the following restrictions apply:
  • The switches can only be connected to APs of the specified models, including P7052DN/AP7152DN, AP6052DN, AP8082DN/AP8182DN, AP7060DN, and AP7052DE.
  • Supported PoE power supply standards include 60 w PoE++, 30 w PoE+, and 15.4 w PoE. There is a 5 w power loss per 100 m.
  • The maximum PoE power supply distance can reach 200 m only when the following network cables are used.
    Table 8-4  Ports and network cables required for providing the maximum PoE power supply distance of 200 m

    Device Model

    Required Port

    Required Network Cable

    S5720-28X-PWH-LI-AC

    8x2.5GE electrical ports

    • Category 5e shielded twisted pair (Cat5e STP)
    • Category 6 shielded twisted pair (Cat6 STP)
    • Category 6A foiled/unshielded twisted pair (Cat6A F/UTP)
    • Category 6A shielded twisted pair (Cat6A STP)
    • Category 7 twisted pair (Cat7)

    S6720-32C-PWH-SI-AC and S6720-32C-PWH-SI

    Right 8x2.5GE electrical ports

    • Category 5e shielded twisted pair (Cat5e STP)
    • Category 6 shielded twisted pair (Cat6 STP)
    • Category 6A foiled/unshielded twisted pair (Cat6A F/UTP)
    • Category 6A shielded twisted pair (Cat6A STP)
    • Category 7 twisted pair (Cat7)
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Updated: 2019-10-21

Document ID: EDOC1000178167

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