24
Chapter 7: Advanced Tab
airFiber
®
X User Guide
Ubiquiti Networks, Inc.
Here are a couple of examples involving the use of the
Use Timeout Duration
option.
• Example #1
•
Link Off Duration
5
seconds
•
Link Off Spacing
60
seconds
The Data port’s Ethernet link will be initially
disconnected when the RF link first goes down. That
event will start a 60-second timer. The Ethernet link
will remain offline for 5 seconds (regardless of the RF
link status) and then come back online. The Ethernet
link will remain online (regardless of the RF link
state) until the 60-second timer expires.
• Example #2
•
Link Off Duration
20
seconds
•
Link Off Spacing
120
seconds
The Data port’s Ethernet link will be initially
disconnected when the RF link first goes down. That
event will start a 120-second timer. The RF link goes
back up after 10 seconds; however, that does not
affect the Ethernet link. The Ethernet link will remain
offline for 20 seconds and then come back online.
The RF link goes down again after 60 seconds;
however, that does not affect the Ethernet link.
The Ethernet link will then remain online until the
120-second timer expires.
•
Enabled
This option is designed for use by operators
who are not using in-band management. The
Track
Radio Link
option is enabled without timers, so the Data
port’s Ethernet link follows the RF link state exactly. If
the RF link goes down, then the Ethernet link goes down
and remains down until the RF link goes back up.
Minimum TX Capacity
This is the minimum allowable TX
capacity before the link is dropped. If the capacity drops
below this threshold, the Ethernet link will be dropped.
If set to 0, then capacity will not be used; only the RF link
state will be used.
Minimum RX Capacity
This is the minimum allowable RX
capacity before the link is dropped. If the capacity drops
below this threshold, the Ethernet link will be dropped.
If set to 0, then capacity will not be used; only the RF link
state will be used.
Capacity Window
This is the number of continuous
seconds that the radio must remain under the minimum
TX or RX capacity before the link is dropped. If set to
0, then as soon as capacity drops below a set limit, the
Ethernet link will be dropped.
MGMT Port Ethernet Settings
MGMT Speed
This is the speed of the
Management
port. By default, the option is
Auto. The airFiber X radio
automatically negotiates transmission parameters, such as
speed and duplex, with its counterpart. In this process, the
networked devices first share their capabilities and then
choose the fastest transmission mode they both support.
To manually specify the maximum transmission link
speed and duplex mode, select one of the following
options:
100 Mbps‑Full
,
100 Mbps‑Half
,
10 Mbps‑Full
,
or
10 Mbps‑Half.
If you are running extra long Ethernet
cables, a link speed of
10 Mbps could help to achieve
better stability.
Full-duplex mode allows communication in both
directions simultaneously. Half-duplex mode allows
communication in one direction at a time, alternating
between transmission and reception.
