User's Manual

AP230 User Guide 7
AP230 PRODUCT OVERVIEW
Figure 2 PoE wire usage and pin assignments
The ETH0 port can receive PoE through an Ethernet cable connected to PSE that is 802.3af- or
802.3at-compatible. Such equipment can be embedded in a switch or router, or it can come from
purpose-built devices that inject power into the Ethernet line en route to the AP. Aerohive provides several
PoE injectors as accessories that you can order: AH-ACC-INJ-30W-EU, AH-ACC-INJ-30W-UK,
AH-ACC-INJ-30W-US, AH-ACC-INJ-30W-AU, and AH-ACC-INJ-30W-IL. If an Aerohive AP is connected to both
an AC power source and PSE, the AC power source takes priority. If the device loses power from that source,
it automatically switches to PoE. If the AC power comes back online, the AP automatically switches back to
AC. Each time the AP switches from one power source to another, it must reboot.
The two Ethernet interfaces can be configured as aggregate interfaces for increased throughput and
redundant interfaces for increased reliability. For more information, see "Aggregate and Redundant
Interfaces" on page 8.
ETH0
Pin T568A Wire Color
1White/Green
2Green
3 White/Orange
4Blue
5White/Blue
6Orange
7White/Brown
8Brown
(View of the ETH0
PoE Port)
8 1
Pin numbers
Pin T568B Wire Color
1 White/Orange
2 Orange
3 White/Green
4Blue
5White/Blue
6Green
7White/Brown
8Brown
T568A-terminated Ethernet
cable with an RJ45
Data Signal
802.3af Alternative A
(data and power on
the same wires)
802.3af Alternative
B (data and power
on separate wires)
802.3at wring options
Pin MDI MDI-X MDI or MDI-X 1 2 3 4
1 Transmit + DC+ DC– – – – DC1+ DC1– DC1+ DC1–
2 Transmit - DC+ DC– – – – DC1+ DC1– DC1+ DC1–
3 Receive + DC– DC+ – – – DC1– DC1+ DC1– DC1+
4 (unused) – – – – – – DC+ DC2+ DC2+ DC2– DC2–
5 (unused) – – – – – – DC+ DC2+ DC2+ DC2– DC2–
6 Receive - DC– DC+ – – – DC1– DC1+ DC1– DC1+
7 (unused) – – – – – – DC– DC2– DC2– DC2+ DC2+
8 (unused) – – – – – – DC– DC2– DC2– DC2+ DC2+
MDI = Medium dependent interface for straight-through connections
MDI-X = Medium dependent interface for cross-over (X) connections
The ETH0 PoE port is auto-sensing and can automatically adjust to transmit and receive data over
straight-through or cross-over Ethernet connections. Likewise, it can automatically adjust to 802.3af
Alternative A and B power delivery methods. Furthermore, when the Alternative A method is used, the port
automatically allows for polarity reversals depending on their role as either MDI or MDI-X. In 802.3at, the 1/2
and 3/6 wire pairs connect to DC source 1 and 4/5 and 7/8 pairs to DC source 2 in PSE. Although the exact
polarity depends on the PSE design, the ETH0 PoE port can support all possible options.
T568B-terminated Ethernet
cable with an RJ45
T568A and T568B are two
standard wiring termination
schemes. Note that the only
difference between them is
that the white/green + solid
green pair of wires and the
white/orange + solid orange
pair are reversed.
For straight-through Ethernet
cables—using either the T568A
or T568B standard—the eight
wires terminate at the same
pins on each end.
For cross-over Ethernet cables,
the wires terminate at one end
according to the T568A
standard and at the other
Preliminary Draft