User's Manual

Table Of Contents
22
DragonWave Inc.Features
3.9.3 CoS Queue and Egress Port Rate Limiting (Shaping)
Traffic shaping is supported across each egress port.
Lite supports port rate limiting by L1 and L2.
3.10 Power over Ethernet
To be size/cost optimized, there is no dedicated external power supply interface to Lite.
The power supply feed to Lite is provided over Ethernet interface.
Both standard PoE+ (IEEE 802.3at) and P+E solutions are supported.
g
Lite is available in 2 hardware versions, one supporting both PoE+ and P+E, another
supporting only P+E. Refer to 4.2 for the mechanism. Refer to the document of Order
Codes Reference for the order codes of the 2 versions.
The system’s rated voltage is -48 VDC, rated current 1.0 A.
P+E is a proprietary power over Ethernet solution that supports at least 60 W of power
output. Lite also supports one P+E output which facilitates powering an additional Lite.
The PoE+ and P+E circuits are independent.
3.10.1 P+E
The functionality of the P+E feature is shown is Figure 8.
Figure 8 P+E functionality
The P+E In interface works as a P+E PD (powered device) port. Lite can be fed by
a P+E PSE (power source equipment) via this port. This interface can be connected
to the following systems:
IDU such as Hub 800 (with order code T555800MB.01) or First Mile 200i;
AC/DC or DC/DC proprietary Power Injector;
Base station with P+E functionality.
The P+E Out interface works as P+E PSE port and can be used to feed another Lite
at the same location (chain site).
Figure 9 shows the scenario where a P+E device is powering two Lites.