Poe Overview; Poe Features Supported By The S9300; Configuring Poe Functions - Huawei Quidway S9300 Configuration Manual

Quidway S9300 Terabit Routing Switch
Configuration Guide - Device Management

7.1 PoE Overview

This section describes the concept and working principle of PoE.
The S9300 supports power over Ethernet (PoE). It can provide power for powered devices (PDs)
through twisted pairs after configured with PoE power supplies and PoE boards.

7.2 PoE Features Supported by the S9300

This section describes the PoE features supported by the S9300.
PoE Functions Provided by the S9300
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PoE Power Supplies Supported by the S9300
The S9300 can use the AC PoE power supply.
The maximum output power of a 220 V AC PoE power supply is 800 W, and the maximum
output power of a 110 V AC PoE power supply is 400 W.
PoE Boards Supported by the S9300
Currently, the S9300 supports only one type of PoE board, that is, G48VA.

7.3 Configuring PoE Functions

This section describes how to configure PoE functions.
Issue 03 (2011-12-29)
The PoE power supply is independent of the system power supply.
The PoE power supplies of the S9300 are managed by the main control board. Each PoE
board can be regarded as the power sourcing equipment (PSE), and a PoE board provides
power for all the ports on the board independently.
The S9300 complies with the legacy power supply standard, and it can also provide power
for PDs that do not comply with the legacy standard.
The S9300 can provide power and transmit data at the same time through the signal lines
1, 3, 2, and 6 of the category-3 or category-5 twisted pair. If the PD can obtain power only
through the idle lines 4, 5, 7, and 8 of the twisted pair, the S9300 can provide power through
a converter.
The S9300 provides power for devices through Ethernet electrical interfaces on the LPUs.
An LPU can provide power for a maximum of 48 devices at a distance of up to 100 m.
The maximum PoE power of an Electrical interface is 30 W.
NOTE
l When the S9300 provides power for a PD, the PD can work without other external power supplies.
l If a PD has an external power supply, the S9300 and the external power supply of the PD work in
redundancy mode.
NOTE
The maximum output power of the system is determined by the number, type, and voltage of PoE power
supplies.
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