16
Installation Dragon PTN Nodes
Release 01 02/2018
The PD receives power in parallel to data, over the existing CAT-5 (or higher for more power)
Ethernet infrastructure without it being necessary to make any modifications to it. PoE inte-
grates data and power on the same cable, it keeps the structured cabling safe and does not
interfere with concurrent network operation, see Figure 17.
PoE delivers a minimum of 48V of DC power over shielded/unshielded twisted-pair wiring for
terminals consuming less than 25.5 Watts of power.
Before the power is delivered to a connected device, a protocol measures whether that de-
vice is a PoE device and how much power it needs (power classification). If required, the
necessary power will be delivered by the PSE with a maximum of 40 Watts per port. PoE is
supported on all the electrical RJ45 ports of the 4-GC-LW module. All these ports can deliver
power according to the 802.3af (PoE) and 802.3at (PoE+) standard.
Via HiProvision it is possible to enable/disable PoE per port and to verify which ports in each
node are PoE enabled.
(Future) Power management is supported, i.e. the Dragon PTN node decides in an intelligent
way which PoE ports will get power and which ones will not. There are a lot of possible
scenarios in which power management must tune its delivered power on each port. Some
configuration/status parameters in HiProvision used by power management are:
External PoE PSU power
Available power budget
Power Priority / Port Priority
Power Class (class 0, 1, 2, 3, 4 configured and detected)
Power management also offers PoE diagnostics in HiProvision.
Figure 13
General PoE Example
NSM
PSU-1
PSU-2
CSM-1
CSM-2
IFM-1 IFM-2 IFM-3 IFM-4
IFM-5 IFM-6
NSM
PSU-1
PSU-2
CSM-1
CSM-2
IFM-1 IFM-2 IFM-3 IFM-4
IFM-5 IFM-6
NSM
PSU-1
PSU-2
CSM-1
CSM-2
IFM-1 IFM-2 IFM-3 IFM-4
IFM-5 IFM-6
Dragon PTN
MPLS-TP Network
PoE Power & Data
External PSU
AC/DC PoE PSU
à
NSM
DC/DC PoE PSU
à
NSM
Power
Data only
Power
No PoE
PoE
NSM
PSU-1
PSU-2
CSM-1
CSM-2
IFM-1 IFM-2 IFM-3 IFM-4
IFM-5 IFM-6
4-GC-LW IFM
NSM
