User's Manual

AP230 User Guide 9
AP230 PRODUCT OVERVIEW
Redundant Interface
If a single Ethernet link provides sufficient bandwidth and speed, such as a 1000 Mbps link, but you want
to ensure link redundancy, you can connect the two Ethernet ports to the same switch—or to two
different switches—and configure them to act as a redundant interface called "red0". In this mode, only
one Ethernet interface is actively forwarding traffic at any one time. If eth0 is active and eth1 is passive
and eth0 loses its connection, the AP switches over to eth1. To configure a redundant interface, enter
the following commands:
interface eth0 bind red0 primary
interface eth1 bind red0
The interface that you specify as primary is the one that the AP uses when both interfaces have network
connectivity. Because the AP uses eth0 as the primary interface by default, it is unnecessary to specify
"primary" in the first command above. However, it is included to make the role of eth0 as the primary
interface obvious.
Interface Selection for the Default Route
In cases where there are multiple active interfaces in backhaul mode, the AP uses the following logic to
choose which interface to use in its default route:
• If there is an Ethernet interface and a wireless interface in backhaul mode, the AP uses the Ethernet
interface in its default route.
• If there are multiple Ethernet interfaces in backhaul mode, the AP chooses which one to use in its
default route in the following order:
• It uses red0 or agg0 if either has at least one member interface bound to it and its link
state is UP.
• It uses ETH0 if neither red0 nor agg0 has any member interfaces and the link state for
ETH0 is UP.
• It uses ETH1 if neither red0 nor agg0 has any member interfaces, the link state for ETH0 is
DOWN, and the link state for ETH1 is UP.
Console Port
Through the Console port, you can make a serial connection between your management system and the
AP. When you connect to the device using the RJ45 Console port, the management station from which you
connect to the device must have a VT100 emulation program, such as Tera Term Pro
©
(a free terminal
emulator) or Hilgraeve HyperTerminal
®
(provided with Windows
®
operating systems from XP forward). The
serial connection settings are: 9600 bits per second, 8 data bits, no parity, 1 stop bit, no flow control.
USB Modem Port
The USB modem port (backward compatible with USB1.1) allows you to connect a wireless 3G/4G USB
modem to serve as a backup WAN connection. The port is protected by a port cover. To access the port,
remove the screw on the bottom of the unit that secures the cover in place. To protect the port, keep the
cover in place when the port is not in use. For additional security, when you are not using the port, you can
secure it with one of the security screws that ship with the device.
No extra configuration is necessary on the connecting switch or switches to support a
redundant interface.
If you use the security screw, you will need a spanner insert bit for size #6 security screws and a driver
handle
that will accept the bit. These bits are available from Aerohive in sets of three for AP121, AP141,
AP230, AP330, AP350, AP370, and AP390 models (AH-ACC-SEC-BIT-330-AP350-3PK).
Preliminary Draft