Ethernet And Console Ports - Aerohive HiveAP 20 ag Deployment Manual

Chapter 1 The HiveAP Platform

Ethernet and Console Ports

There are two ports on the HiveAP: a 10/100Base-T/TX Ethernet port and a male DB-9 console port. Both ports use
standard pin assignments.
The pin assignments in the PoE (Power over Ethernet) Ethernet port follow the TIA/EIA-568-B standard (see
Figure 2). The PoE port accepts standard types of Ethernet cable—cat3, cat5, cat5e, or cat6—and receives power
over this cable from power sourcing equipment (PSE) that is 802.3af-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 HiveAP. Because the PoE port has autosensing capabilities, the wiring termination in the Ethernet cable can be
either straight-through or cross-over.
Figure 2 PoE Wire Usage and Pin Assignments
Pin Numbers
1
(View of the PoE port
on the HiveAP)
The 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 PoE port automatically allows for polarity reversals depending on its role as either MDI or MDI-X.
T568A-Terminated Ethernet Cable
with an RJ-45 Connector
T568B -terminated Ethernet Cable
with an RJ-45 Connector
12
8
Pin
1
2
3
4
5
6
7
8
MDI = Medium dependent interface for straight-through connections
MDI-X = Medium dependent interface for cross-over (X) connections
Pin
1
2
3
4
5
6
7
8
Pin
1
2
3
4
5
6
7
8
802.3af Alternative A
(Data and Power on
the Same Wires)
Data Signal MDI MDI-X
Transmit + DC+ DC–
Transmit - DC+ DC–
Receive + DC– DC+
– – – – – –
(unused)
– – – – – –
(unused)
Receive - DC–
– – – – – –
(unused)
– – – – – –
(unused)
T568A Wire Color
White/Green
Green
White/Orange
T568A and T568B are two standard
Blue
wiring termination schemes. Note that
White/Blue the only difference between them is
that the white/green + solid green pair
Orange
of wires and the white/orange + solid
White/Brown
orange pair are reversed.
Brown
For straight-through Ethernet cables—
using either the T568A or T568B
standard—the eight wires terminate at
T568B Wire Color
the same pins on each end.
White/Orange
For cross-over Ethernet cables, the
Orange
wires terminate at one end according
to the T568A standard and at the
White/Green
other according to T568B.
Blue
White/Blue
Green
White/Brown
Brown
802.3af Alternative B
(Data and Power on
Separate Wires)
MDI or MDI-X
– – –
– – –
– – –
DC+
DC+
– – –
DC+
DC–
DC–
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