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CHAPTER
1
Overview
The Cisco Aironet 1520 Series Outdoor Mesh Access Point (hereafter called the access point) is a
modularized wireless outdoor access point designed for use in a mesh network. The access point also
supports wireless client access, point-to-point bridging, point-to-multipoint bridging, and
point-to-multipoint mesh wireless connectivity. The access point is a standalone unit that can be
The LAP1522 model supports two radios (2.4-GHz and 5-GHz) and the LAP1524 model supports
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Chapter 1 Overview Hardware Features This chapter provides information on the following topics: • Hardware Features, page 1-2 Network Deployment Examples, page 1-11 Hardware Features This section describes the hardware features of the access point. Figure 1-1, Figure 1-2, and Figure 1-3 show the access point connectors. Note The illustrations in this document show all available connections for the access point. Unused connections are capped with a connector plug to ensure the access
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Chapter 1 Overview Hardware Features Figure 1-2 Cable, Fiber-Optic, and Antenna Connector Locations 1 2 1 Cable POC connector (optional) 4 Antenna port 2 (Type N) 3 2 2 Fiber-optic connector (optional) 5 Antenna port 1 (Type N) 2 3 Antenna port 3 (Type N) 1. Stinger connector shown is user supplied. 2. Antenna locations depend upon access point configuration (see the “Antenna Connector Locations” section on page 1-5). 3. Liquid tight adapter not shown. Cisco Aironet 1520 Series Outdoo
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Chapter 1 Overview Hardware Features Figure 1-3 DC Power Connector and Ground Screw Holes 1 Ground screw holes 2 DC power connector Figure 1-4 shows the antenna port locations for all models. The ports used depend on the model ordered. Cisco Aironet 1520 Series Outdoor Mesh Access Point Hardware Installation Guide 1-4 OL-12632-03
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Chapter 1 Overview Hardware Features Figure 1-4 Antenna Port Locations 1 Antenna port 1 5 Hinge 2 Antenna port 2 6 Antenna port 5 3 Antenna port 3 7 Antenna port 6 4 Antenna port 4 Antenna Connector Locations The access point is manufactured in three configurations, cable, mesh, and pole mount. These configurations support specific locations for the access point antennas, as shown in Table 1-1. Table 1-1 Antenna Locations per Access Point Configuration Access Point Configurations Ante
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Chapter 1 Overview Hardware Features Table 1-1 Antenna Locations per Access Point Configuration (continued) Access Point Configurations Antenna Port Cable Mesh and Pole Mount 3 2.4-GHz antenna connector 2.4-GHz antenna connector (RX) (TX/RX) 1 4– 2.4-GHz antenna connector (RX) 1 1 5– – 1 6– 2.4-GHz antenna connector (TX/RX) 1. Reserved for future use. Some of the access point’s hardware features are listed below: Multiple radios (2.4-GHz, 5-GHz, and 4.9-GHz)—see the “Multiple Radi
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Chapter 1 Overview Hardware Features Note The 4.9-GHz band requires a license and can only be used by qualified public safety operators as defined in section 90.20 of the FCC rules. The 2.4-GHz radio supports two or three antennas for single-input, multiple-output (SIMO) operation. The access point uses two or three receivers to support maximum ratio combining (MRC) to enhance receiver performance. MRC is a technique that combines the signals from multiple receivers in a manner to
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Chapter 1 Overview Hardware Features Table 1-3 External 2.4-GHz Antennas Part Number Model Gain (dBi) AIR-ANT2450V-N 2.4-GHz compact omnidirectional 5.5 AIR-ANT2480V-N 2.4 GHz omnidirectional 8 Multiple Power Sources The access point supports these power sources: PoE—power injector (AIR-PWRINJ1500-2=) AC power—100 to 480 VAC (standard power source for the pole mount configuration) POC—40 to 90 VAC (quasi-square wave AC), (standard power source for the cable configuration) Exter
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Chapter 1 Overview Hardware Features Caution When the access point is installed outdoors or in a wet or damp location, the AC branch circuit that is powering the access point should be provided with ground fault protection (GFCI), as required by Article 210 of the National Electrical Code (NEC). The Ethernet cable from the power injector to the access point (PoE-in port) must be not less than 10 ft (3.1 m). The AC power cord options are listed below: 40-ft (15.2-m) power cord for l
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Chapter 1 Overview Hardware Features Cable Modem The access point cable configuration contains an internal cable modem for connection to the cable network from the pole-mounted cable lines. The access point can be powered using the 40-to 90-VAC (quasi-square wave AC) power provided by the cable network. Note The access point uses a Scientific Atlanta DPC2100 cable modem board and 4015821 RF splitter. The cable modem supports these main features: Data Over Cable Service Interface S
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Chapter 1 Overview Network Deployment Examples o o – 2-hour access point operation using two radios at 77 F (25 C)— with PoE output port on banding strap tool (BAND IT) (AIR-BAND-INST-TL=)—used to install the metal straps used in pole mounting. Network Deployment Examples The access point is a wireless device designed for wireless client access and point-to-point bridging, point-to-multipoint bridging, and point-to-multipoint mesh wireless connectivity. The access point provides 5-
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Chapter 1 Overview Network Deployment Examples Point-to-Point Bridging The access points can be used to extend a remote network by using the 5-GHz backhaul radio to bridge the two network segments as shown in Figure 1-6. To support Ethernet bridging, you must enable bridging on the controller for each access point. Figure 1-6 Access Point Point-to-Point Bridging Example Point-to-Multipoint Bridging The access points can be used as a RAP to connect multiple remote MAPs with their asso
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Chapter 1 Overview Network Deployment Examples Mesh Network The access points are typically deployed in a mesh network configuration. In a typical mesh deployment, one or more RAPs have a wired network connection through a switch to a controller. Other remote MAPs without wired network connections use the backhaul feature to optimally link to a RAP that is connected to the wired network. In the mesh network, the links between the access points are referred to as the backhaul links.
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Chapter 1 Overview Network Deployment Examples Layer 3 Network Operation The access points support Layer 3 network operation. Access points and controllers in Layer 3 configurations use IP addresses and UDP packets, which can be routed through large networks. Layer 3 operation is scalable and recommended by Cisco. Figure 1-9 illustrates a typical Layer-3 wireless network configuration containing access points and a controller. Figure 1-9 Typical Layer 3 Access Point Network Configura
