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Chapter 3
Mounting and Alignment Overview
You use the Install LED to determine when the bridge successfully associates with a remote bridge and
to verify its mode of operation. After association, the other three LEDs indicate signal strength (see
Table
The startup and association sequence depends on the bridge configuration, which can be one of the
following types:
•
•
Aligning the Antenna Using LED Indications
You can align the integrated antenna using LEDs after the bridge successfully associates with a remote
bridge. In the installation mode before association to another bridge, the Install LED blinks amber. If the
bridge associates to a root bridge, the Install LED turns steady amber. If the bridge does not associate to
a root bridge in the first 30 seconds, the Install LED blinks green to indicate beacons are being
transmitted and the bridge is waiting for another non-root bridge to associate. After association, the
Install LED turns into steady green and the Ethernet, status, and radio LEDs then display signal strength
as shown in
For the signal level (dBm), a smaller number represents a stronger signal because the signal level is given
Note
as a negative value.
Each time you move the antenna, you must wait approximately 20 seconds before the LED patterns are
Note
valid.
Table 3-3
Signal Level (dBm)
>-44
-47 to -44
-50 to -47
-53 to -50
-54 to -53
-57 to -54
-60 to -57
-63 to -60
-66 to -63
-69 to -66
-72 to -69
-75 to -72
< -75
OL-4072-01
D R A F T - C I S C O C O N F I D E N T I A L
3-3).
Default—The bridge attempts to associate with a root bridge for 30 seconds. If it does not associate
with a root bridge, it then attempts to associate with a non-root bridge.
Pre-configured—The bridge attempts to associate with a remote bridge in the configured mode,
either root or non-root. Because there are no time-outs, it is easier to align the antenna.
Table
3-3).
LED Installation Mode Signal Strength Display
Ethernet LED
On
Fast blink
Medium blink
Slow blink
Off
Off
Off
Off
Off
Off
Off
Off
Off
Status LED
On
1
On
2
On
3
On
On
1
Fast blink
Medium blink
3
Slow blink
Off
Off
Off
Off
Off
Cisco Aironet 1400 Series Wireless Bridge Hardware Installation Guide
Aligning the Antenna Using LED Indications
Radio LED
On
On
On
On
On
On
2
On
On
On
1
Fast blink
2
Medium blink
3
Slow blink
Off
3-5
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