Cisco Aironet 1400 Series Outdoor Bridge Hardware Installation Guide, OL-4072-04
Overview
Downloads: This chapterpdf (PDF - 311.0KB) | Feedback

Overview

Table Of Contents

Overview

Key Features

Power

External Antenna

Integrated Antenna

Ethernet Ports

Metal Enclosure

Bridge LEDs

Receive Signal Strength Indicator Port

Network Configuration Examples

Point-to-Point Configuration

Port Aggregation or Redundancy Configuration

Point-to-Multipoint Configuration

Bridge Specifications

Maximum Power Levels


Overview


The Cisco Aironet 1400 Series Wireless Bridge (hereafter called the bridge) is a wireless device designed for building-to-building wireless connectivity. Operating in the 5.8-GHz UNII 3 band (5725 to 5825 MHz), derived from the 802.11a standard, the bridge delivers 6 to 54 Mbps data rates without the need for a license. The bridge is a self-contained unit designed for outdoor installations, providing differing antenna gains as well as coverage patterns. It supports both point-to-point and multipoint configurations.

The bridge uses a browser-based management system, but you can also configure the bridge using Cisco IOS commands or Simple Network Management Protocol (SNMP).

This chapter provides information on the following topics:

Key Features

Network Configuration Examples

Bridge Specifications

Key Features

Key features of the bridge:

Unlicensed UNII-3 5.8-GHz radio operation

Metal enclosure supports outdoor installations

Industrial temperature rating

Integrated antenna or external antenna configurations (see Figure 1-1)

Dual-coax 100-Mbps Ethernet ports

Four LEDs on bridge

Inline power over dual-coax cables

Receive Signal Strength Indicator (RSSI) voltage port for easy antenna alignment

Bridge control using Cisco IOS commands, Internet browser, or SNMP


Note The bridge communicates only with other bridges and does not support associations with wireless client adapters.


Figure 1-1 Bridge Configurations

1

Integrated antenna bridge configuration

2

External antenna bridge configuration


Power

The bridge is available in two output power versions to support international regulatory regions:

Regular Power—Supports 24, 23, 22, 21, 18, 15, 12 dBm output power settings. Available in the integrated antenna and external antenna bridge configurations.

Low Power—Supports 16, 13, 12, 10, 9, 8, 7, 4 dBm output power settings. Available only in the integrated antenna bridge configuration for use in international regulatory regions.

The bridge receives inline power from the Cisco Aironet Power Injector LR (hereafter called the power injector). Dual-coax cables are used to provide Ethernet data and power from the power injector to the bridge. The power injector is an external unit designed for operation in a sheltered environment, such as inside a building. The power injector also functions as an Ethernet repeater by connecting to a
Category 5 LAN backbone and using the dual-coax cable interface to the bridge.

The power injector uses an external 48-VDC power module and after detecting the presence of the bridge, injects the DC voltage into the dual-coax cables to power the bridge.


Note The power injector and the power module should not be placed in an outdoor unprotected environment.


External Antenna

The bridge is available with an N-type RF connector on the front of the unit (see Figure 1-1) for an external 5.8-GHz antenna. The supported external antennas connect to the bridge antenna connector using the antenna's 4.9-ft (1.5-m) coax cable.

9-dBi omnidirectional external antenna with vertical polarization

9.5-dBi sector external antenna

28-dBi dish external antenna


Note To meet regulatory restrictions, the external antenna bridge configuration and the external antenna must be professionally installed.



Note Some international regulatory regions may restrict the use of external antennas.


Integrated Antenna

The bridge is available with an integrated 22.5-dBi or 20-dBi patch array antenna. The antenna is covered with a radome to protect it from environmental elements. When configured with the integrated antenna, the antenna polarization is controlled by the mounting orientation of the bridge. The bridge must be physically rotated 90 degrees to obtain either horizontal or vertical polarization. An arrow indicating polarization is designed into the bridge housing to indicate the polarization direction.


Note The 20-dBi integrated is available only on the low power bridge version for Korea.



Note Some international regulatory regions may restrict the integrated antenna bridge configuration.


Ethernet Ports

The bridge's power injector dual-coax ports accept a pair of 75-ohm F-type connectors, linking the bridge to your 100BASE-T Ethernet LAN through the power injector. The dual-coax cables are used to send and receive Ethernet data and to supply inline 48-VDC power from the power injector. For the location of the ports, refer to Figure 1-2.


Tip You can connect the dual-coax cable connectors to either of the bridge's power injector dual-coax ports. The bridge senses the Ethernet signals and automatically switches internal circuitry to match the cable connections.


Metal Enclosure

The bridge uses a metal enclosure that supports outdoor operating environments and supports an industrial temperature operating range (refer to "Bridge Specifications" section).

Bridge LEDs

Four LEDs are located on back of the housing to report installation and alignment conditions, bridge status, radio activity, and Ethernet activity (see Figure 1-2).

Figure 1-2 Bridge Connectors and LEDs

1

Power injector dual-coax ports

4

Status LED

2

RSSI voltage port

5

Radio LED

3

Ethernet LED

6

Install LED


The bridge LEDs are shown in Figure 1-2.

The install LED indicates that installation mode is activated. During installation mode, the other LEDs provide signal strength readings used for antenna alignment.

The radio LED blinks green to indicate radio traffic activity. The light is normally off, but it blinks green whenever a packet is received or transmitted over the bridge radio link. This LED also provides signal strength readings during installation mode.

The status LED signals bridge association status. Blinking green indicates that the bridge is not associated with another bridge. Steady green indicates that the bridge is associated with at least one other bridge. This LED also provides signal strength readings during installation mode.

The Ethernet LED signals Ethernet traffic. This LED blinks green when a packet is received or transmitted over the Ethernet infrastructure. The LED is off when the Ethernet link not working or the port is shutdown. This LED also provides signal strength readings during installation mode.

For additional information on the LEDs, refer to "Checking the Bridge LEDs" section on page 6-2.

Receive Signal Strength Indicator Port

The bridge supports a receive signal strength indicator (RSSI) port for use in antenna alignment. The RSSI port produces a DC voltage proportional to the strength of the received radio signal. The highest voltage indicates the best antenna alignment position. The RSSI port is a female BNC connector located on the bottom of the bridge housing (see Figure 1-2).


Note The RSSI port requires the use of a voltmeter and a cable with a male BNC connector.


Network Configuration Examples

This section describes the bridge's role in three common wireless network configurations.

Point-to-Point Configuration

In a point-to-point configuration, two bridges connect two remote LAN networks using a wireless communication link (see Figure 1-3). The bridge connected to the main LAN network is classified as a root bridge and the other bridge is classified as a repeater bridge.

Figure 1-3 Point-to-Point Bridge Configuration

Port Aggregation or Redundancy Configuration

The port aggregation or redundancy configuration (Figure 1-4) is used to provide increased bandwidth or backup redundancy communications between two LANs. Port aggregation or increased bandwidth occurs when both wireless links are used to simultaneously pass Ethernet traffic. Backup communication redundancy can be achieved with this configuration when one wireless bridge link is used only if the other wireless bridge link fails.

Figure 1-4 Port Aggregation or Redundancy Bridge Configuration

Point-to-Multipoint Configuration

The point-to-multipoint configuration (Figure 1-5) connects the main LAN network to multiple remote LAN networks.

Figure 1-5 Point-to-Multipoint Bridge Configuration

Bridge Specifications

The bridge, power injector, and power module specifications are listed in Table 1-1.

Table 1-1 Bridge, Power Injector, and Power Module Specifications 

Category
Bridge
Power Injector and Power Module

Size

Integrated antenna configuration:

11.4 in. W x 11.4 in. H 4.2 in. D
29.0 cm W x 29.0 cm H 10.7 cm D

External antenna configuration:

11.6 in. W x 11.6 in. H x 3.6 in. D
29.5 cm W x 29.5 cm H x 9.1 cm D

Power injector:

6.3 in. W x 6.4 in. H x 1.3 in. D
16.0 cm W x 16.3 cm H x 3.3 cm D

Power module:

6.2 in. W x 3.2 in. H x 1.7 in. D
15.7 cm W x 8.1 cm H x 4.3 cm D

LEDs

Four LEDs on the back panel: Installation and Alignment Mode, Ethernet traffic, bridge status, and radio traffic

Three LEDs on the front panel: Uplink activity, injector status, Ethernet activity

One LED on the side panel: Power

Connectors

Bottom panel (left to right): Power injector dual-coax ports (two F-type connectors), RSSI port (female BNC connector)

Front Panel (external antenna configuration):
antenna Type N connector

Side panel (left to right): 48-VDC power connector, two coaxial uplink F-type connectors, and Ethernet RJ-45 connector for 100BASE-T Ethernet

Operating Temperature

-22 to 131oF (-30 to 55oC)

32 to 122oF (0 to 50oC)

Cold Start Temperature

-22oF (-30oC)

Warm-up time
(for full performance)

15 minutes after cold start

Non-Operational Temperature

-40 to 185oF (-40 to 85oC)

-40 to 158oF (-40 to 70oC)

Humidity

0 to 100% (condensing)

0 to 90% (non-condensing)

Operational Vibration

0.001 G2/Hz from 5-100 Hz

0.001 G2/Hz from 5-100 Hz

Non-Operational Vibration

0.01 G2/Hz from 5-100 Hz

0.01 G2/Hz from 5-100 Hz

Environmental Testing Compliance

Integrated antenna configuration:

The enclosure has been successfully tested for protection against the ingress of particulate matter and fluids in compliance with a NEMA Type 4 (IP56) enclosure rating.

External antenna configuration:

The enclosure has been successfully tested and is in compliance with a NEMA Type 4 (IP56) enclosure rating.

Weight

Integrated antenna configuration:

12 lbs (5.44 kg)

External antenna configuration:

11 lbs (4.99 kg)

Power injector—1.4 lbs (0.6 kg)
Power Module—1.0 lbs (0.5 kg)

Input Voltage

48 VDC nominal (supplied by dual-coax cables)
40 VDC (minimum)
50 VDC (maximum)

Power injector—48 VDC (± 2 VDC)
Power module:

90 to 264 VAC at 47 to 63 Hz

Power Consumption

32W (typical)
41W (maximum)

2.5W (maximum)

Output Power

Regular power version:

24, 23, 22, 21, 18, 15, 12 dBm

Low power version:

16, 13, 12, 10, 9, 8, 7, 4 dBm

(Depending on the regulatory region)

Power injector—45W (maximum) supplied to the bridge through dual-coax cables

Power module—60W (maximum)

Frequency

UNII 3—5.725 to 5.825 GHz
(Depending on the regulatory region)

Wireless modulation

Coded Orthogonal Frequency Division Multiplexing
(COFDM)

Subcarrier modulation

BPSK (6 Mbps and 9 Mbps)
QPSK (12 Mbps and 18 Mbps)
16-QAM (24 Mbps and 36 Mbps)
64-QAM (48 Mbps and 54 Mbps)

Data rates

6, 9, 12, 18, 24, 36, 48, and 54 Mbps

Non-overlapping channels

4

Antenna

(Depending on the regulatory region)

Integrated antenna

22.5-dBi patch array
20-dBi patch array

External antennas:

9-dBi omnidirectional
9.5-dBi sector
28-dBi dish

(Depending on the regulatory region)

Safety

Bridge:

UL 60950
CSA C22.2 No. 60950
IEC 60950
EN 60950

Power injector and power module:

UL 60950
CSA C22.2 No. 60950
IEC 60950
EN 60950

Note The power injector and the power module must be used in an indoor environment.

Electromagnetic Compatibility (EMC)

Bridge:

FCC Part 15.107 and 15.109 Class B
ICES-003 Class B (Canada)
EN 55022 Class B
EN 55024
EN 301.489-1
EN 301.489-4

Power injector and power module:

FCC Part 15.107 and 15.109 Class B
ICES-003 Class B (Canada)
EN 55022 Class B
EN 55024

Radio Type Approvals

Bridge radio:

FCC Part 15.207, 15.407, and15.209 Class B
ICES-003 Class B (Canada)
Canada DGTP-010
FCC Bulletin OET-65C
Industry Canada RSS-102, RSP100, and
RSS 210 Issue 5

Note No harmonized standard exists for this frequency in the European Union regulatory region. The radio spectrum matters are covered in a Technical Construction File per R&TTE Directive 99/5/EC.

RF Exposure

Bridge antenna:

AIR-ANT58G28SDA-NAironet
AIR-ANT58G10SSA-NAironet
AIR-ANT58G9VOA-NAironet

Note For Ireland the bridge satisfies EN50835 for RF exposure.


Maximum Power Levels

Each regulatory region limits the equivalent isotropic radiated power (EIRP) that can be supported within their region. This restricts the bridge output power that can be used with the bridge antennas and affects the resulting operating range of the bridge (for additional information refer to Appendix C, "Channels and Maximum Power Levels."