Ethernet And Console Ports - Aerohive AP330 User Manual

Chapter 1 Aerohive AP330 and AP350

Ethernet and Console Ports

There are three ports on the AP330 and AP350: two RJ-45 10/100/1000Base-T/TX Ethernet ports and an RJ-45
console port.
The pin assignments in the Ethernet ports follow the TIA/EIA-568-B standard (see
standard types of Ethernet cable—cat3, cat5, cat5e, or cat6. Because the ports have 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
8 1
ETH0
(View of the ETH0
PoE Port)
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.
T568A-terminated Ethernet
cable with an RJ-45 connector
T568B-terminated Ethernet
cable with an RJ-45 connector
10
802.3af Alternative A
(data and power on the
same wires)
Pin Data Signal MDI
1 Transmit + DC+
2 Transmit - DC+
3 Receive + DC–
4 (unused) – – –
5 (unused) – – –
6 Receive - DC–
7 (unused) – – –
8 (unused) – – –
Pin
Pin
802.3af Alternative B
(data and power on
separate wires)
MDI-X MDI or MDI-X
DC– – – –
DC– – – –
DC+ – – –
– – – DC+
– – – DC+
DC+ – – –
– – – DC–
– – – DC–
T568A Wire Color
1 White/Green
2 Green
3 White/Orange
4 Blue
5 White/Blue
6 Orange
7 White/Brown
8 Brown
T568B Wire Color
1 White/Orange
2 Orange
3 White/Green
4 Blue
5 White/Blue
6 Green
7 White/Brown
8 Brown
Figure 2). The ports accept
802.3at wring options
1 2 3
DC1+ DC1– DC1+
DC1+ DC1– DC1+
DC1– DC1+ DC1–
DC2+ DC2+ DC2–
DC2+ DC2+ DC2–
DC1– DC1+ DC1–
DC2– DC2– DC2+
DC2– DC2– DC2+
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 according to
T568B.
4
DC1–
DC1–
DC1+
DC2–
DC2–
DC1+
DC2+
DC2+
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