Support For Power Over Ethernet (Poe) - Alcatel-Lucent 7210 SAS M Interface Configuration Manual

Ports

Support for Power over Ethernet (PoE)

NOTE: PoE is not supported on any other 7210 SAS platform other than 7210 SAS-T ETR and
7210 SAS-Mxp ETR.
The 7210 SAS-T ETR unit and 7210 SAS-Mxp ETR unit supports Power over Ethernet (PoE) as
per 802.3af and 802.3at standards. It allows these devices to be used to supply power to connected
PoE devices, such as telephones, CCTV cameras, and other PoE standard compliant devices.
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The following functionalities are available:
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ration Guide
On 7210 SAS-T ETR, up to four fixed copper ports are available to connect PoE/PoE+
devices. It can supply a maximum of up to 60W of power.
On 7210 SAS-Mxp ETR unit, up to 2 ports are available to connect PoE/PoE+ devices. It
can supply a maximum of up to 60W of power.
On both 7210 SAS-T ETR and 7210 SAS-Mxp ETR, the maximum amount of power
available is to be shared among all the PoE/PoE+ devices connected to the node. In other
words, it is possible to have a mix of PoE devices (using 15W of power) and PoE+ devices
(using 30W of power) as long as the total power drawn is within the system limits.
Supports both 802.3af (PoE) and 802.3at (PoE+) on any of the ports. The ports can be
used to connect either PoE devices or PoE+ devices or a combination of both
simultaneously, as long as the power drawn is within the device's system limits.
Only Alternative A is supported on the supported 7210 SAS devices.
Supports classification of both Type 1 and Type 2 PD using physical layer classification
mechanism (using 1-event physical layer classification mechanism for Type 1 PD and 2-
event physical layer classification mechanism for Type 2 PD).
Supports allocation of power based on the identified class (called as class-based power
allocation method) using physical layer classification mechanism. The 802.3af and
802.3at standards define the power that can be allocated or requested by a particular class.
There are four classes defined - Class 1, Class 2, Class 3 and Class 4 by standards. These
are used to allow PoE devices to request power based on their needs. If enough power is
not available to supply power based on the identified class, then power is denied to the
connected PoE device. Each device has limit on the maximum amount of power it can
provide. If the total of power requested by the devices connected to PoE enabled ports
exceed this threshold, then the device denies power to the device. When power is denied
to the PD, the port is operationally up, though power is not supplied to the port. If the
power is applied successfully or power is denied to the port, the system logs an event.
Only DC power is supplied to connected PoE devices (PDs). It works with PoE devices
that use injectors where a AC/DC wall device is used to power a remote PoE device.
7210 SAS M, T, X, R6, R12, Mxp Interface Configu-