Aerohive BR200-WP, Справочник по аппаратуре

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Hardware Reference Guide 19
AP121
AND
AP141 P
RODUCT
O
VERVIEW
Ethernet Ports
The AP121 and AP141 devices have one RJ45 10/100/1000Base-T/TX Ethernet port (Eth0). The AP can receive
power through an Ethernet connection to the ETH0 port from PSE (power sourcing equipment) that is
compatible with the 802.3af standard. Aerohive provides suitable PoE (power over Ethernet) injectors as an
optional accessory.
The port accepts standard types of Ethernet cable—cat3, cat5, cat5e, or cat6—and can receive power
over the Ethernet cable from PSE (power sourcing equipment) 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 AP. Because the PoE port has autosensing capabilities, the wiring termination in
the Ethernet cable can be either straight-through or crossover. Aerohive provides several PoE injectors as
accessories that you can order: AH-ACC-INJ-20W-EU, AH-ACC-INJ-20W-UK, AH-ACC-INJ-20W-US,
AH-ACC-INJ-20W-AU, and AH-ACC-INJ-20W-IL.
If an 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.
Through the RJ45 console port, you can make a serial connection between your management system and
the AP. The pin-to-signal mapping of the RJ45 console port is shown in "RJ45 Console Port Pin Assignments" on
page 113 . For cabling and connection details, see "Power over Ethernet Port Pin Assignments" on page 110 .
The pin assignments in the Ethernet port follow the TIA/EIA-568-B standard (see "Power over Ethernet Port Pin
Assignments" on page 110 ).
Power connector There are two ways to power an AP121 or AP141. You can connect a device to a
100 – 240-volt AC power source by connecting an AC/DC power adaptor
(available as an extra option) to the 12 V (1.1A) DC connector. You can also power
the device through the ETH0 port from PSE (power sourcing equipment) that is
compatible with the 802.3af and 802.3at standards. Because there is no on/off
switch, these devices automatically power on when you connect them to power.
ETH0 10/100/1000
Mbps port
The 10/100/1000-Mbps RJ45 Ethernet port—ETH0—is compatible with
10/100/1000Base-T/TX and automatically negotiates half- and full-duplex
connections with the connecting device. It is autosensing and adjusts to
straight-through and crossover Ethernet cables automatically. See "Ethernet Ports"
on page 19 .
Reset button The reset button allows you to reboot the device or reset it to its factory default
settings. See "Reset Button" on page 20 .
USB port Reserved for future use.
Security tab cavity,
security screw and
device lock slot
When mounting the AP on a ceiling track or flat surface, you can secure it to the
track using the security screw that ships with the device. You can also physically
secure the AP by attaching a lock (such as a Kensington
®
notebook lock) and
cable to the device slot. See "Locking the AP121 and AP141" on page 24 .
If you connect the AP to a power source using the power connector and the ETH0 PoE port at the
same time, the device draws power through the power connector and automatically disables PoE.
Table 1 AP121 and AP141 component descriptions (Continued)
Component Description