Chapter 3 Mounting and Alignment Overview

Aligning the Antenna Using LED Indications

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 3-3).

The startup and association sequence depends on the bridge configuration, which can be one of the following types:

Default—The bridge attempts to associate with a root bridge for 60 seconds. If it does not associate with a root bridge, it then attempts to associate with a non-root bridge.

Preconfigured—The bridge attempts to associate with a remote bridge in the configured mode, either root or non-root. Because there are no timeouts, it is easier to align the antenna.

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 continuous amber. If the bridge does not associate to a root bridge in the first 60 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 continuous green and the Ethernet, status, and radio LEDs then display signal strength as shown in Table 3-3).

Note For the signal level (dBm), a smaller number represents a stronger signal because the signal level is given as a negative value.

Table 3-3

LED Installation Mode Signal Strength Display

 

 

 

 

 

Signal Level (dBm)

Ethernet LED

Status LED

Radio LED

 

 

 

 

 

>–44

 

On

On

On

 

 

 

 

 

–47 to –44

 

Fast blink1

On

On

–50 to –47

 

Medium blink2

On

On

–53 to –50

 

Slow blink3

On

On

–54 to –53

 

Off

On

On

 

 

 

 

 

–57 to –54

 

Off

Fast blink1

On

–60 to –57

 

Off

Medium blink2

On

–63 to –60

 

Off

Slow blink3

On

–66 to –63

 

Off

Off

On

 

 

 

 

 

–69 to –66

 

Off

Off

Fast blink1

–72 to –69

 

Off

Off

Medium blink2

–75 to –72

 

Off

Off

Slow blink3

< –75

 

Off

Off

Off

 

 

 

 

 

1.Slow blinking rate of 1 blink/sec.

2.Medium blinking rate of 2 blinks/sec.

3.Fast blinking rate of 4 blinks/sec.

Cisco Aironet 1400 Series Wireless Bridge Hardware Installation Guide. OL-4072-03

 

OL-4072-04

3-5

 

 

 

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Cisco Systems 1400 manual Aligning the Antenna Using LED Indications, Signal Level dBm Ethernet LED Status LED Radio LED

1400 specifications

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