Cisco Systems 102063, 102064 User Manual

CISCO CONFIDENTIAL - Draft 1

CHA PT ER

Overview

The Cisco Aironet 1520 Ser ies Outdoo r Mesh Acc ess Point (h ereaft er cal led the acce ss po int) is a wireless device designed for 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 mounted on a streetlight pole or on a building wall or overhang. It is a self-contained outdoor unit that can be configured with a wire d backhau l connec tion to an Et hernet segment for a ro oftop deployment or can be configured with a w ire less ba ckha ul for a pole -top de ployme nt. The a cce ss point can be installed whe re p ower is available wit hout the nee d f or a w ire d ne twork conne ct ion.

The access po int i s available in two mode ls : L AP1522 (s uppo rts 2.4 -G Hz an d 5-G Hz ra dio s) a nd LAP1521 (supports a 2.4 -G Hz radio) .T he a cce ss poi nt p rovides cli ent ac cess an d wi reles s m esh backhaul that suppo rts 6 to 54 Mbps dat a rates with out the need for a lice nse. The LA P1522 mo del dedicates the 5-GHz radio for backhaul operations to reach a wired network and uses the 2.4-GHz radio for wireless client s. T he L A P1521 m ode l u ses the 2 .4- o r 5 -GH z ra dio fo r bot h back ha ul and w ire less clients.

The access point can also operate as a relay node for other access points not directly connected to a wired network. Intelligent wireless r outing is p rovid ed b y the paten t-pending Ad apti v e Wireless Path Proto col (AWPP). This enables each access point to identify its neighbors and intelligently choose the optimal path to the wired netw ork b y ca lcula ting the c ost of e ach pa th in ter ms of signal str ength and the n umber of hops required to g et to a c ont roll er.

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The access point is configured, monitored, and operated through a Cisco wireless LAN controller (hereafter ca lled a controller) as described in the Cisco Wireless LAN Controller Configuration Guide. The Deployment Guide: Ci sco Mesh Netw orki ng Solu tion describes how to plan and initially configure the Cisco Mesh network, which suppor ts wireless poin t-to-p oint, point- to-mult ipoint, and me sh deployments. The controllers use a browser-based management system, a command-line interface (CLI), or the Cisco Wireless Control System (WCS) network management system to manage the controller and the associated access points. The access point is compliant with Wi-Fi Protected Access (WPA2) and employs hardware-base d Advanced E ncryp tion Sta nda rd ( AE S) en crypt ion b etw een w ire less nodes t o provide end-to-end se cu rity.

This chapter provides information on the following topics:

• Main Hardware Feature s, page 2

• Network Configuration Examp les, page 6

Cisco Aironet 1520 Series Outdoor Mesh Access Point Hardware Installation Guide

1-1

Main Hardware Features

Some of the access point’s main hardware features are listed below:

• One or two radios (2.4- and 5-GHz)— see the “Single or D ual Radio Op erati on” sect ion on page 3

• External radio an ten nas — see the “Ext erna l A nte nna s” se ct ion o n pa ge 3

• Multiple power sources—see the “Mu ltiple Power Sources” sec tion on page 4

• Rugged metal enclosure—see the “Metal Enclosure” section on page 5

• Optional Ethernet ports— see the “Ethe rnet Ports” sect ion on page 5

• Optional cable modem—see the

• Optional hardware—see the “Option al Hard ware” sec tion on page 6

–

Cable strand mount kit

–

Pole mount kit

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150 ft (45.72 m) Etherne t outdoor cable

• Optional battery backup—future availability

Figure 1 shows the access point connectors .

Figure 1 Access Point Connectors

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Connectors

The optional featues of the access point support these connectors (see Figure 1):

• Ethernet (PoE) uplink con nector —(typ e RJ45 wi th T BD for wa terp roo fing)

• Ethernet downlink connect or—(t ype RJ45 wi th TBD for wate rproo fing)

• Three Type N antenna connectors (2.4-GHz radio)

• One Type N antenna connector (5-GHz radio)

• Fiber-optic connector— Sma ll form factor pluggable (SFP)

• Power-over-cable (POC) connector—(TBD)

• AC power connector

Single or Dual Radio Operation

The access po int i s available in two mode ls : L AP1522 (s uppo rts 2.4 -G Hz an d 5-G Hz ra dio s) a nd LAP1521 (supports a 2.4- or 5-GHz radio). The radios use external antennas (see “External Antennas”).

The LAP1522 model supports simultaneous dual-radio operation using a 2.4-GHz 802.11b/g radio and a 5-GHz 802.11a ra dio. The LAP1 521 mode l su ppor ts b ot h me sh b ackh aul op erat ion and w ireless clients using a single 2.4- or 5-G Hz radio.

The 5-GHz rad io i ncor por ate s a n Unl ice nsed N ationa l I nf orm ati on I nfr ast ruc ture ( UNI I) radi o transceiver operating in the UNII 5-GHz frequency bands. The 5-GHz radio on the access point is used for backhaul oper ations to the contro ller. The 5-GHz radio can also opera te in the 4. 9-GHz Public Safety band in the United States.

Note The 4.9-GHz band requires a license and may be used only by qualif ied Publ ic Safety operators

as defined in section 90.20 of t he FC C rule s.

The 2.4-GHz radio supports three antennas for multi-input, single output (MISO) operation. The radio uses 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 optimize the signals. MRC can provide up to 3 dB of incr ease d receive signal strengt h.

The access poin t do es no t sup por t both ra dio s c onfigured f or bac kha ul supp ort

External Antennas

The access point is equ ipped with t hree N-ty pe radi o freque ncy (RF) conne ctor on the t op of the uni t for external 2.4-GHz antennas to support multiple input single output (MISO) operation. The LAP1522 model also has one to three N-type RF connectors on the bott om of the unit for external 5 -GHz antennas (see Figure 1). Whe n usi ng t he o pti onal Cisco co mpa ct om ni dir ectiona l a nten nas, the 2. 4- a nd 5-GHz antennas conn ect dir ectl y to t he a cce ss point. T he Ci sco omn idi rect ion al an tenn as use ver tic al polarization.

The access point can also be e quipped with spec ific third-pa rty external ant ennas (see Table 1 and Table 2), subject to local regulatory requirements. When you are installing third-party antennas, they must be installed with all waterproofing steps recommended by the third-party manufacturer.

Note When you mount the access point in an indoor environ ment, y ou mus t also mount the antennas

in an indoor environment.

Warning

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

Table 1 and Table 2 lists the supported external antennas for the access point.

Table 1 External 5-GHz Antennas

Part Number Model Gain (dBi)

AIR-ANT5180V-N 5-GHz compact omnidirectional

4.9-GHz compact omnidir ectiona l

7 AIR-ANT58G10SSA-N 5-GHz sector 9.5 AIR-ANT5114P-N 4.9- to 5-GHz patch AIR-ANT5117S-N 4.9- to 5-GHz 90-degree sector

1. The compact omnidirectional antennas mount directly on the access point.

2. The use of the 4.9-GHz band requires a license and may be used only by qualified Public Safety operators as defined in

section 90.20 of the FCC rules.

Table 2 External 2.4-GHz Antennas

14.0

17.0

Part Number Model Gain (dBi)

AIR-ANT2450V-N 2.4-GHz compact omnidirec tional

5.5

AIR-ANT2480V-N 2.4 GHz omnidirectiona l 8.0

1. The compact omnidirectional antennas mount directly on the access point.

Multiple Power Sources

The access point supports these power sources:

• Power-over-Ethernet (POE)—1520 power injecto r

• AC power—90 to 480 VAC

• Quazi-AC power-over-cable (POC)—40 to 90 V

• External 12 VDC

• Internal battery

The access point can be connected to more than one power source. The access point detects the available input sources and switches to the preferred power source using the following default prioitization:

• AC power or POC power

• External 12VDC power

• 1250 Power Injetor PoE power

• Internal Battery power

Note The power source default prioriti zation can be us er reconf i gu red.

Caution To provide inline PoE, you must use the 1250 power injector. Other power injectors, PoE

switches, and 802.3af power sources cannot provide adequate power , which may cause the access point to malfunct ion and ca use over-current condi tions at the power source. You must ensure that the switch port connected to the access point has PoE turned off.

Caution The power injector and the power module must be used in an indoor environme nt only.

Overview

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Caution When the access point is installed outdoors or in a wet or damp location, the AC branch

Ethernet Ports

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 AC power cord options are listed below:

• 40-ft (12.2-m) power cord for light pole installations in the US and Canada.

• 40-ft (12.2-m) power c ord f or use o uts ide the US an d C an ada. One e nd of t he power cor d is

terminated with an access point AC power connector and the other end is unterminated.

• 4-ft (1.2-m) streetlight power tap adapter for light pole installations in the US and Canada.

The access po int sup por ts an Et hern et upl ink po rt a nd a d ownlink por t. T he a cce ss poi nt’s Ethernet uplink port uses an RJ-45 connector (with weatherproofing) to link the access point to your10BASE-T, 100BASE-T , or 1000BASE-T network. The Ethernet cable is used to send and receive Ethernet data and to optionally supply inline 56-VDC power from the power injector.

The access point’s downlink Ethernet p ort u ses an R J -45 conne c tor ( with we ath erpr oofing) t o pr ovide LAN connectivity and IEEE 802.3af po wer to a peripheral customer device, such as a camera or sensor gateway.

The Ethernet MAC addresses are printed on the label on the side of the access point (refer to the

“Finding the Product Serial Number - TBD” section on page 13).

Tip s The ac c ess po in t s e nse s th e Et hern et an d p ower si gn als an d au to ma tic al ly sw it ch es

internal circuitry to match the cable connections.

Caution To provide inline PoE , you must use the 1520 power injector. Other power injectors, PoE

switches, and 802.3af power sources can no t provide adequa te power, which may cause the access point to malfunction and cause possible over-current conditions at the power source.

Metal Enclosure

The access po int uses a me tal en cl osure th at ca n acco mm oda te bo th in door or o utdoo r ope rat ing environments and a n in dust r ial te mp er atur e op er ati ng range of (–40°F (–40°C ) to 131°F (5 5°C). The access point complies with NEMA Type 4X and I P66 re quir emen ts fr om IEC6 052 9.

Note When the access point is mounted indoors, the antennas must also be mounted indoors.

Cable Modem

Optional Hardware

Some of the access point hardware options are listed below:

• Cable modem—DOCSIS 2.0 compatible for direct connection to cable lines.

• Fiber optic module—uses Small Form Factor Pluggable (SFP) connections for connection to fiber

optic lines.

–

Supports 100BaseBX module s

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Supports 15.5 mi (25 km) of fiber-optic cable.

• Pole mount kit (SKU - TBD)—provides hardware for mounting the access point to the top of a

metal or wood pole, such as a streetlight pole.

• Streetlight power tap adapter (SKU - TBD)—connects to the light control connector on a streetlight

pole and provides AC power to the access point.

• Outdoor ra ted Ethernet cable ( ???)—used to supply Ethernet and optional DC power to the access

point.

• 1520 power injector (SKU - TBD)—provides power-over-Ethernet (PoE) to the access point.

• AC power cord (for additional information, refer to the “Multiple Power Sources” section on

page 4).

• Future availability—battery backup module (80 Watt hour (WHr). The integrated battery can be

used to power the uni t w hen extern al power so ur ces a re not available.

–

Four hour access po int op erat ion u sin g two r adio s at 77oF (25oC)—with PoE outpu t port o ff

–

Two hour access point operation using two radi os at 77oF (25oC)— with PoE output port on

–

User installable and replaceable

•

Network Configuration Examples

The access poin t is a wir eless d evice desi gned fo r wir eless c lien t a cce ss and po int -to-p oint bri dgin g, point-to-multipoint bridging, and point-t o-multi point mesh w ireless conne ctivity. The access point provides 5-GHz back ha ul c apab ilit y to li nk wi th a not her ac cess point to r eac h a wir ed ne twork —connection or to p rovide repe ate r ope rat ions for oth er a cce ss poi nts.

The access point plays two primary radio roles: a root access point (hereafter called a RAP) or a non-root access poi nt (here after called a MAP). When the ac cess p oint ha s a wi red E thern et connec tion to the controll er (thr oug h a s witc h), t he ra dio role is ca ll ed a RAP. A RAP is a parent node t o any bridging or mesh network. A controller can support one or more RAPs, each one parenting the same or different wireless networks. The re can be more than one RAP for the same mesh networ k for redundancy. RAPs also support wireless clients on the band not being used for the backh aul interfac e.

When the access point does not have a wired Ethernet connection to the controller (through a switch), the radio role is called a MAP. The M APs have a wireless connection (through the backhaul interface) to other MAPs and final ly to a RA P wit h an Eth erne t c onn ect ion thro ugh a swit ch t o the c ontro ller. MAPs may also have a wired Ethernet connection to a local LAN and serve as a bridge endpoint for that LAN (using a poi nt-to- poin t or po i nt-to- mult ipoin t brid ge c onn ecti on) . MA Ps also sup port wi reless clients on the band not used for the backhau l interfac e.

Overview

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Wireless Backhaul

The access po int sup por ts wi reless ba ckha ul c apa bil ity usin g th e 5-GH z radi o t o brid ge to an othe r access point to re ach a wi red n etwo rk co nnec tio n to a cont rol ler (s ee Fi gu re 2). The acce ss po int connected to the wired network is considered a RAP in this configuration. The remote access point is considered a MAP and transfers wireless client traffic to the RAP for transfer to the wired network. Lightweight access point protocol (LWAPP) control traffic is also transferred over this bridged link.

Note The LAP 1505 model uses the 2.4-GHz radio for backhaul and wir eless client operat ions.

Figure 2 Access Point Backhaul Example

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 sho wn in Figure 3. To support Ethernet bridging, you must enable bridging on the controller for each access point .

Note The LAP 1505 model uses the 2.4-GHz radio for bridgi ng op er ations .

Wireless client access is sup por ted; however, if bridging between tall building s, the 2.4- Gh z w irele ss coverage area may be limited and possib ly not suitabl e for direc t wireless cli ent access.

(5.8 Ghz)

(2.4 Ghz)

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Figure 3 Access Point Point-to-Point Bridging Example

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Point-to-Multipoint Bridging

The access points can be used as a RAP to connect multiple remote MAPs with their associated wired networks (see Figure 4). By default this capability is turned-off for all access points. To support Ethernet bridging, you mu st enable br idging on the controller for each acc ess point.

Wireless client access can be provided over the bridging link; however, if bridging between tall buildings, the 2.4-Ghz wi reless c overage area may be l imit ed a nd possi bly not s uitabl e f or dir ect wireless client access.

Figure 4 Access Point Point to Multipoint Bridging Example

Mesh Network

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The access po int s are typ i cal ly d ep loyed in a m esh n etwor k co nfigurati on. I n a typi cal me sh deployment, one or more RAPs have a wired network connection through a switch to a controller . Other remote MAPs without w ire d net work c onnec tions us e t he ba ckha ul f eat ure t o o ptima lly link t o a RA P that is connected to the wired network. In the mesh network, the links between the access points are referred to as the backhaul links.

Intelligent wireless routing is provided b y the patent-pendin g Adaptiv e W ireless Pa th protocol (AWPP). This enables each MAP to i dent ify its neig hbor s an d i nte llig ently c hoose t he op timal pa th t o t he RA P with the wired net work c onn ect ion by ca lcu lat ing the c ost of each pa th i n ter ms o f sign al st reng th an d the number of hops required to get to a cont roller.

Overview

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+ 18 hidden pages