Poe Configuration Tasks - Huawei Quidway S3900 Series Operation Manual

Operation Manual – PoE & PoE Profile
Quidway S3900 Series Ethernet Switches-Release 1510
Through the fixed 24/48 Ethernet electrical ports, it can supply power to up to
24/48 remote Ethernet switches with a maximum distance of 100 m (328
feet).
Each Ethernet port can supply at most a power of 15,400 mW to a PD.
When AC power input is adopted for the switch, the maximum total power that
can be provided is 300 W. It can determine whether to supply power to the
next remote PD it detects depending on its available power.
When DC power input is adopted for the switch: it is capable of supplying full
power to all of the 24/48 ports, that is, 15,400 mW for each port, and the total
power is 369.6/739.2 W.
The PSE processing software on the switch can be upgraded online.
The switch provides statistics about power supplying on each port and the
whole equipment, which you can query through the display command.
The switch provides two modes (auto and manual) to manage the power
feeding to ports in the case of PSE power overload.
The switch provides over-temperature protection mechanism. Using this
mechanism, the switch disables the PoE feature on all ports when its internal
temperature exceeds 65 0C (149 0F) for self-protection, and restores the PoE
feature on all its ports when the temperature drops below 60 0C (140 0F).
The switch supports the PoE profile feature, that is, different PoE policies can
be set for different user groups. These PoE policies are each saved in the
corresponding PoE profile and applied to ports of the user groups.
Note:
When using the PoE-enabled S3900 switch to supply power, the PDs need not
have any external power supply.
If a remote PD has an external power supply, the PoE-enabled S3900 switch
and the external power supply will be redundant with each other for the PD.
Only the electrical ports of the PoE-enabled S3900 switch support the PoE
feature.

1.2 PoE Configuration Tasks

Table 1-1 PoE configuration tasks
Enable the PoE feature on a port
Set the maximum output power on
a port
Operation
1-2
Chapter 1 PoE Configuration
Description Related section
Section 1.3 Enabling the
Required
PoE Feature on a Port
Section 1.4
Optional Maximum Output Power
on a Port
Setting the