User's Manual

Aruba AP-120 Series Indoor Access Point | Installation Guide 7

Ethernet Ports

The RJ45 Ethernet ports (ENET0 and ENET1) support 100/1000Base-T auto-sensing MDI/MDX

connections. Use these ports to connect the AP to a twisted pair Ethernet LAN segment or directly to an

Aruba Mobility Controller. Use a 4- or 8-conductor, Category 5 UTP cable up to 100 m (325 feet) long.

The 100/1000 Mbps Ethernet ports are on the bottom of the AP. These ports have RJ-45 female

connectors with the pin-outs shown in Table 1.

Serial Console Port

The serial console port allows you to connect the AP to a serial terminal or a laptop for direct local

management. This port is an RJ-45 female connector with the pinouts described in Table 2. Connect this

port in one of the following ways:

z Connect it directly to a terminal or terminal server using an Ethernet cable.

z Use a modular adapter to convert the RJ-45 (female) connector on the AP to a DB-9 (male)

connector, and connect the adapter to a laptop using an RS-232 cable. See Figure 7 for connector

details of the adapter.

NOTE

Aruba 12x APs are intended only for installation in Environment A as defined in IEEE 802.3.af, Power

over Ethernet. All interconnected equipment must be contained within the same building, including

the interconnected equipment’s associated LAN connections.

NOTE

When installed in an air-handling space, such as above suspended ceiling (plenum), the unit is

required to be powered through PoE only. Additional cabling such as Fast Ethernet (FE) cables

installed in such spaces should be suitable under NEC Article 800.50 and marked accordingly for

use in plenums and air-handling spaces with regard to smoke propagation, such as CL2-P, CL3-P,

MPP or CMP.

Table 1 Connector for Ethernet Ports ENET0 and ENET1

Connector Pin

Signal

Name

GE Connection

Connection

PoE

1 BI_DA+ Bi-directional pair A+ RX+ POE negative

2 BI_DA– Bi-directional pair A– RX– POE negative

3 BI_DB+ Bi-directional pair B+ TX+ POE positive

4 BI_DC+ Bi-directional pair C+ Spare pair POE positive

5 BI_DC– Bi-directional pair C– Spare pair POE positive

6 BI_DB– Bi-directional pair B– TX– POE positive

7 BI_DD+ Bi-directional pair D+ Spare pair POE negative

8 BI_DB– Bi-directional pair D– Spare pair POE negative

Table 2 Connector for Serial Console Port

Connector Pin Signal Name Function

3TXD Transmit

4GND Ground

5GND Ground

6RXD Receive

Pins not listed are not connected.