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C H A P T E R

Overview

This document covers the Cisco 2800/3800 Series Access Points theory of operation and installation as part
of a Cisco wireless LAN (WLAN) solution. Subjects related include:

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Choosing the right access point, part numbers and descriptions

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Supported code versions

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Differences between AP 2800 and AP 3800

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Physicals / Hardware details, mounting options, bracket choices

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Third party mounting options including hospital and cleanroom environments

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Understanding Flexible Radio Assignment (FRA) and architecture

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Understanding Macro and Microcells

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Looking at roaming between cells

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Hardware differences in FRA between I, E and P versions

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Approved antennas and new FCC regulatory

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B domain

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AP 2800 and AP 3800 powering options and requirements

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AP 3800 and Multigigabit Ethernet (mGig)

Cisco Aironet Series 2800/3800 Access Point Deployment Guide

Summary of Contents for aironet 2800 series

Page 1: ...00 3800 Access Point Deployment Guide First Published 2016 05 11 Americas Headquarters Cisco Systems Inc 170 West Tasman Drive San Jose CA 95134 1706 USA http www cisco com Tel 408 526 4000 800 553 NETS 6387 Fax 408 527 0883 ...

Page 2: ... IMPLIED INCLUDING WITHOUT LIMITATION THOSE OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING USAGE OR TRADE PRACTICE IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES INCLUDING WITHOUT LIMITATION LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE T...

Page 3: ...nting Options 13 Channel Rail Adapters 14 Mounting an AP Directly into the Tile Using Optional AIR AP BRACKET 3 16 Using an In tile Mount from Oberon Wireless 18 Wall mounting the AP 18 Changing the Color of an AP 21 Clean Rooms Healthcare 22 Above the Ceiling Tiles 22 C H A P T E R 4 Understanding Flexible Radio Assignment software overview 25 Understanding Flexible Radio Assignment Software Over...

Page 4: ... and AP 3800 Powering Options 41 C H A P T E R 8 AP 3800 and Multigigabit Ethernet mGig 47 C H A P T E R 9 New B Regulatory Domain for US Theater 51 C H A P T E R 1 0 Stadium and Harsh Environments 53 C H A P T E R 1 1 Areas with High Vibration 55 C H A P T E R 1 2 Related References 57 Previous Deployment Guides 57 C H A P T E R 1 3 Frequently Asked Questions FAQ s 59 Cisco Aironet Series 2800 38...

Page 5: ...hysicals Hardware details mounting options bracket choices Third party mounting options including hospital and cleanroom environments Understanding Flexible Radio Assignment FRA and architecture Understanding Macro and Microcells Looking at roaming between cells Hardware differences in FRA between I E and P versions Approved antennas and new FCC regulatory B domain AP 2800 and AP 3800 powering opt...

Page 6: ...Cisco Aironet Series 2800 3800 Access Point Deployment Guide 2 Overview ...

Page 7: ...s target customers requiring support for mission critical and best in class applications The 2800 3800 embodies ClientLink 4 0 an innovative antenna technology comprising four transmit radios and four receive radios called 4x4 in a Multiple Input Multiple Output MIMO configuration and supporting three spatial streams 3SS together referenced as 4x4 3 Using this type of antenna system along with add...

Page 8: ...tories and warehouses anywhere a need exists for external antennas and or extended operating temperatures The e version also supports mounting inside NEMA enclosures for use in the most demanding environments Access points for professional install are labeled p series and may be used in outdoor applications Part Numbers and Descriptions Description SKU Single Unit Internal Antenna Model AIR AP3802...

Page 9: ...reless LAN Controller WLC AirOS release 8 2MR1 Polaris release 16 3 Prime release 3 1MR1 MSE or CMX 10 2 2 ISE 2 0 Differences between the AP 2800 and AP 3800 Access Points The mechanical front of the AP 2800 and AP 3800 are nearly identical in physical appearance Figure 2 AP 2800 and AP 3800 I and E versions Cisco Aironet Series 2800 3800 Access Point Deployment Guide 5 Choosing the Right Access ...

Page 10: ... in the weight and thickness of the 2800 and 3800 The AP 3800 is a bit more robust as it has support for mGig NBASE T and optional module support AP 2800 on left is smooth and does not have heat fins Figure 4 AP 2800 3800 Dimensions Cisco Aironet Series 2800 3800 Access Point Deployment Guide 6 Choosing the Right Access Point Differences between the AP 2800 and AP 3800 Access Points ...

Page 11: ...E and P versions as well as the 2800e is 2 1 kg AP 3800i is 2 0 kg AP 2800i is 1 6 kg Note Both products use the same brackets as 2700 3700 2700 3700 Series Access Points AIR AP BRACKET1 and AIR AP BRACKET 2 Cisco Aironet Series 2800 3800 Access Point Deployment Guide 7 Choosing the Right Access Point Differences between the AP 2800 and AP 3800 Access Points ...

Page 12: ...fferences Here is a basic feature comparison Figure 6 Feature comparisons of 2800 and 3800 series Cisco Aironet Series 2800 3800 Access Point Deployment Guide 8 Choosing the Right Access Point Feature Differences ...

Page 13: ...s on 3800 series The AP 3800 has a local power supply jack on the right This is a new style connector and is not compatible with the older AIR PWR B power supplies used with the AP 2700 and AP 3700 series For more on this connector see the AP 2800 and AP 3800 Powering Options for details Cisco Aironet Series 2800 3800 Access Point Deployment Guide 9 Choosing the Right Access Point Ports on the AP ...

Page 14: ...ence The external antenna connectors on the E and P series are identical to the antenna connectors on previous access points There is no difference in operation when the access point is used in dual band 2 4 and 5 GHz operation which is the default mode RF coverage and cell sizes are similar to the previous AP 2700 and 3700 series so there is no need to do a new site survey Unlike the prior extern...

Page 15: ...ined in software as Radio 0 now has its RF switched to the smart antenna connector Figure 10 External connector ports on AP 2800e and 3800e Cisco Aironet Series 2800 3800 Access Point Deployment Guide 11 Choosing the Right Access Point Modularity and Smart Antenna Connector Ports ...

Page 16: ...Cisco Aironet Series 2800 3800 Access Point Deployment Guide 12 Choosing the Right Access Point Modularity and Smart Antenna Connector Ports ...

Page 17: ...ring the ordering process the customer may choose one of two brackets but not both Each bracket is a zero dollar 0 option at the time of configuration If the customer does not choose a bracket the selection default is AIR AP BRACKET 1 which is the most popular for ceiling installations The other choice is a universal bracket that carries part number AIR AP BRACKET 2 The AP 2800 and AP 3800 is noti...

Page 18: ... allows for wiring and the extra holes line up with many popular electrical boxes When mounting the bracket to the ceiling gridwork some ceiling tiles are recessed For this reason two different styles of ceiling clips recessed and flush rails are available For new installations AIR BRACKET 2 is recommended as it provides a little extra room and accomodates earlier access points with modules so it ...

Page 19: ... Example of a recessed ceiling rail system Figure 14 Example of Channel Rails used on thin rail recessed rail ceilings Figure 15 AIR CHNL ADAPTER left Slides onto the Rails Cisco Aironet Series 2800 3800 Access Point Deployment Guide 15 Physical Hardware and Mounting Options Channel Rail Adapters ...

Page 20: ...ail Ceiling Grid profile Mounting an AP Directly into the Tile Using Optional AIR AP BRACKET 3 This bracket is not compatible with the AP 2800 and AP 3800 Series Note If you have this bracket currently installed and are migrating to the newer AP 2800 and AP 3800 series you may be able to still use the existing tile and leverage the new in tile mount available from Oberon Wireless a Cisco partner C...

Page 21: ... is fully supported above the tile with a metal rail that extends the length of the tile This supports the AP should the tile become wet or otherwise fail A mechanical set screw pulls the AP tight to the ceiling and locks it into the bracket Additionally physical security of the AP can be maintained by the use of a Kensington style lock but once installed it is difficult to remove the AP without r...

Page 22: ...urity is required Wall mounting the AP When wall mounting is desired the installer should understand that walls can be a physical obstacle to the wireless signal therefore maintaining 360 degree coverage may be compromised by the wall If the wall is an outside wall and or the goal is to send the signal in a 180 degree pattern instead a directional antenna often Cisco Aironet Series 2800 3800 Acces...

Page 23: ... 2800e or AP 3800e with dipoles pointing vertical Figure 19 Correct orientation of dipole antennas when mounted on a vertical surface Figure 20 Avoid wall mounting units with internal antennas Cisco Aironet Series 2800 3800 Access Point Deployment Guide 19 Physical Hardware and Mounting Options Wall mounting the AP ...

Page 24: ...Cisco Aironet Series 2800 3800 Access Point Deployment Guide 20 Physical Hardware and Mounting Options Wall mounting the AP ...

Page 25: ...coverage is not needed Note Figure 21 Third Party options to Wall Mount Changing the Color of an AP If there is a desire to change the color of an AP rather than painting the AP which would void the warranty consider using colored vinyl tape or using a colored plastic cover from Oberon Figure 22 Third party option for changing AP color adding custom Logo or hiding the LED Cisco Aironet Series 2800...

Page 26: ...rademark name SPOR KLENZ See http www sterislifesciences com Products Surface Disinfectants Cleaners and Alcohols Sporicides Sterilant Spor Klenz Ready To Use Cold Sterilant aspx Note Figure 23 Third Party Locking Ceiling Mount Above the Ceiling Tiles The AP 2800 and 3800 are rated for installation in the Plenum area UL 2043 Many customers prefer to locate the AP so that nothing can be visible on ...

Page 27: ... Tiles For more information see http www erico com http www cooperindustries com Additionally Oberon also offers above tile solutions Figure 25 Oberon Model 1045 Above ceiling hanger kit this includes a hanger bar and wire and a light pipe that can be pressed through the ceiling tile so you can see the status LED from below without lifting ceiling tile Cisco Aironet Series 2800 3800 Access Point D...

Page 28: ...ch as voice and location so verify coverage and performance Always try to mount the AP as close to the inside middle of the tile as possible and avoid areas with obstructions Note Figure 26 Installing AP above ceiling tiles Pick an area clear of obstructions avoid ceiling clutter Cisco Aironet Series 2800 3800 Access Point Deployment Guide 24 Physical Hardware and Mounting Options Above the Ceilin...

Page 29: ...erve clients and another Flexible Radio known as an XOR radio that can be assigned different functions within the network The flexible radio is similar to the previous XOR radio used in the Cisco WSSI WSM modules for the AP 3700 but this new flexible radio module is able to be configured to serve clients in either 2 4 GHz or 5 GHz or serially scan both 2 4 GHz and 5 GHz on the flexible radio while...

Page 30: ...r coverage Creating 2 diverse 5 GHz cells doubles the airtime available Permits one AP with one Ethernet drop to function like two 5 GHz APs Introduces concept of Macro Micro cells for airtime efficiency Allows more bandwidth to be applied to an area within a larger coverage cell Can be used to address non linear traffic Enhances the High Density Experience HDX with one AP XOR radio can be user se...

Page 31: ...ear field and negotiate typically at the highest data rates while clients farther away compete at lower data rates The lower rate clients that are farther away tend to take more airtime than the closer clients running at faster rates This results in non linear traffic and increases the overall channel utilization as clients compete for airtime Figure 28 Single 5 GHz and 2 4 GHz cell default mode C...

Page 32: ...ble the access point to have two 5 GHz radios this solves the problem of too much 2 4 GHz coverage while creating two completely RF diverse 5 GHz cells This not only doubles the air time available to the 5 GHz clients it also optimizes the client throughput by keeping like clients together for better spectrum efficiency Now instead of 60 channel utilization with the clients in near field competing...

Page 33: ...11v BSS transition request with the Micro cell BSSID and the only candidate If a non 11v client it will send an 11k neighbor list and a disassociate packet Other methods and optimizations are being investigated Figure 30 Intra cell roaming Macro cell to Micro cell Client Roaming from a Micro to Macro Cell When a client initially associate to the Micro cell first while less likely but certainly pos...

Page 34: ...he AP 3700 the third radio was defined as Radio 2 sometimes called Slot 2 Now with FRA Radio 0 is the 2 4 GHz radio OR it can be a 5 GHz radio hence the term XOR By default the FRA functions as a 2 4 GHz radio so out of the box the AP behaves the same as a conventional AP 2700 and AP 3700 operating off the dual band Macro cell large brass colored antennas on the four corners in the figure below Ad...

Page 35: ...are horizontal polarity and higher gain to create a smaller cell foot print 3 RF output power on the Micro cell is significantly reduced Cisco Aironet Series 2800 3800 Access Point Deployment Guide 31 Client Roaming in a Micro and Macro Cell Micro and Macro cells on I Series Access Points ...

Page 36: ... heat maps Figure 33 Smith chart comparing radiation patterns of Macro and Micro cell antennas Figure 34 Smith chart radiation pattern of 2 4 GHz 4 dBi Macro cell antenna Cisco Aironet Series 2800 3800 Access Point Deployment Guide 32 Client Roaming in a Micro and Macro Cell Micro and Macro cells on I Series Access Points ...

Page 37: ...rs on top of the device and an additional four RF connectors as well as digital via a new smart antenna connector Figure 35 Smart antenna connector is an integrated feature of the E P series products Cisco Aironet Series 2800 3800 Access Point Deployment Guide 33 Client Roaming in a Micro and Macro Cell RF Operations on E P Series Access Points ...

Page 38: ...smart connector port This allows the top connectors for the 5 GHz radio serving clients and the FRA radio is now free regardless of mode to use the smart connector for RF communications The flexibility to do this allows many different types of modes from discrete single band operation SRE to DRE operation The ability to change the antenna controls sending different bands 2 4 GHz and 5 GHz out of d...

Page 39: ... This can be set manually or automatically if RRM control is desired Figure 37 FRA XOR radio defaults to 2 4 GHz Client serving but is selectable in software Cisco Aironet Series 2800 3800 Access Point Deployment Guide 35 Client Roaming in a Micro and Macro Cell RF Operations on E P Series Access Points ...

Page 40: ...ngly Using the smart antenna connector to RP TNC adapter AIR CAB002 DART R the FRA XOR radio can now be used in many applications as the RF system on the FRA XOR radio will now use the four external RP TNC connectors for a wide variety of application deployments Figure 39 Cisco Smart Antenna Adapter AIR CAB002 DART R Cisco Aironet Series 2800 3800 Access Point Deployment Guide 36 Client Roaming in...

Page 41: ... unique customer requirements dictate that 2 4 GHz RF operation be on one set of antennas and 5 GHz on a completely different set of antennas and that is also possible Figure 40 Smart antenna cable adapter and the Cisco external Omni antenna Since both sets of antennae can be physically spaced apart many new RF design opportunities become available allowing for many different types of new and uniq...

Page 42: ...ual 5 GHz mode the caveats are 1 Channels must not be closer than 100 MHz 2 Antennas should not be mounted so that energy from one antenna is directed into another 3 Ideally if one antenna is Omni then 6 ft or 2 meter physical separation 4 Antennas may be closer if used in Micro cell very low power is used 5 Any combination of Micro Macro can be used as long as physical isolation exists 6 SSIDs mu...

Page 43: ...00E 3800E 3800P The above list is the approved antennas for use in the US Theater using the FCC B domain The new B products allow for outdoor use provided the correct antenna is used Customers should avoid using UNII 1 band outdoors in the US unless the P version is used Cisco Aironet Series 2800 3800 Access Point Deployment Guide 39 ...

Page 44: ...Cisco Aironet Series 2800 3800 Access Point Deployment Guide 40 Approved Antennas for Use with Access Points 2800 and 3800 ...

Page 45: ...ts at the Power Sourcing Equipment PSE Many of Cisco s previous access points such as the AP 1850 and AP 3700 worked best with the higher power sources 802 3at and PoE but would function with reduced functionality if powered by the older 802 3af 15 4W powering systems With the introduction of the XOR radio along with more advanced features it simply is not feasible to run these higher performance ...

Page 46: ... clients 6 Additional auxiliary Ethernet port USB and advanced radio functions such as 160 MHz Dual XOR 7 Support for smart antenna functionality WSM monitor mode and enhanced location 8 802 3bz NBASE T mGig Ethernet support AP 3800 9 Future hardware expandability using modular technology AP 3800 Understanding different types of PoE powering standards Cisco Pre standard PoE Original implementation...

Page 47: ...44 AP 2800 and AP 3800 requires an 802 3at or better PoE source If an 802 3at or better power source is not available the following Cisco mid span injectors may be used Figure 45 Low cost 802 3at GbE injector for AP 2800 and AP 3800 if mGig is not required Cisco Aironet Series 2800 3800 Access Point Deployment Guide 43 AP 2800 and AP 3800 Powering Options ...

Page 48: ...dditional mid span injector capable of 802 3bz known as mGig N BASE T Figure 46 Planned Mid Span Injector Cisco Aironet Series 2800 3800 Access Point Deployment Guide 44 AP 2800 and AP 3800 Powering Options ...

Page 49: ...ite power supply and cord Figure 48 AIR PWR 50 mechanicals Spare part AIR PWR 50 The following Mid Span devices are not compatible with the AP 2800 AP 3800 Note Mid Span Injectors AIR PWRINJ AIR PWRINJ2 AIR PWRINJ3 AIR PWRINJ4 and AIR PWRINJ5 Local power supplies AIR PWR A AIR PWR B and AIR PWR C Cisco Aironet Series 2800 3800 Access Point Deployment Guide 45 AP 2800 and AP 3800 Powering Options ...

Page 50: ...Cisco Aironet Series 2800 3800 Access Point Deployment Guide 46 AP 2800 and AP 3800 Powering Options ...

Page 51: ...he goal is to deliver up to 5 times the speed in the Enterprise without replacing existing cable structure Although the AP 2800 does not directly support mGig these are ideal switches for providing the power required by the AP 2800 as well Note Here are the recommended mGig switches and PoE solutions for the AP 3800 Figure 49 Cisco line of mGig capable switches Cisco Aironet Series 2800 3800 Acces...

Page 52: ...uires 62 5 MHz bandwidth Cat 5e is 100 MHz 2 Data rates up to 2 5G requires 100MHz bandwidth Cat 5e is 100 MHz 3 Data rates up to 5G requires 200MHz bandwidth which is more than the specified Cat 5e 100MHz bandwidth but within the Cat 6 cable The main point is that 5G operations over Cat 5e may have issues using certain cable configurations due to the fact we are using Cat 5e cable beyond the spec...

Page 53: ...ng dense cable bundles for example cables in a dense area like a pipe or places where five or more cables are tied in a bundle Figure 52 Cisco Multigigabit distance limitations Figure 53 Cisco Multigigabit distance limitations Cisco Aironet Series 2800 3800 Access Point Deployment Guide 49 AP 3800 and Multigigabit Ethernet mGig ...

Page 54: ...Cisco Aironet Series 2800 3800 Access Point Deployment Guide 50 AP 3800 and Multigigabit Ethernet mGig ...

Page 55: ...U NII 1 band 5150 5250 MHz the allowed TX power level is increased to 1W for indoor outdoor point to point with extreme restrictions on EIRP above 30 degree horizon when used outdoors The Terminal Doppler Weather Radar TDWR bands channels 120 124 128 are re opened with new test requirements for Dynamic Frequency Selection DFS protection 3 channels New power spectral density and above below band ed...

Page 56: ...n General thoughts concerning compliance as it relates to the AP 2800 and AP 3800 For US customers the B domain is now used for AP 3800 US customers should not order the A domain for US based customers Other countries that use A are unchanged This change only applies to the US This new B domain supports the new channels and transmit powers allowed in the US Customers are responsible for verifying ...

Page 57: ...s wishing to install the AP in harsh environments where it may be exposed to weather such as stadiums sporting areas open garden areas or warehouse freezers may wish to use a NEMA type enclosure Cisco Aironet Series 2800 3800 Access Point Deployment Guide 53 ...

Page 58: ...e world Note Figure 55 Example of NEMA Enclosure with pressure vent on bottom Third party sources for NEMA type enclosures include http www oberonwireless com http www sparcotech com http www terra wave com When using a NEMA type enclosure try to have the cables exit out of the bottom of the enclosure so that rain and moisture do not run down the cable into the enclosure Also the color of the encl...

Page 59: ... using a side arm type mount or other mounting locations where there is a likelihood of high vibration it is recommended that a padlock or metal pin be used to prevent the AP from vibrating loose from the bracket Cisco Aironet Series 2800 3800 Access Point Deployment Guide 55 ...

Page 60: ...Figure 56 Metallic Parts Cisco Aironet Series 2800 3800 Access Point Deployment Guide 56 Areas with High Vibration ...

Page 61: ...loyment_Guide html Understanding Stadium Warehouse Factory and other RF theory such as Spatial Streams Data rates http www cisco com c en us td docs wireless technology apdeploy 8 0 Cisco_Aironet_3700AP html Understanding mGig http blogs cisco com enterprise introducing cisco catalyst multigigabit technology to future proof your network for 802 11ac wave 2 http www cisco com c en us solutions ente...

Page 62: ...Cisco Aironet Series 2800 3800 Access Point Deployment Guide 58 Related References Previous Deployment Guides ...

Page 63: ...primary 5 GHz radio services clients Reduces installation costs as a single AP can now support two 5 GHz radios fewer APs better aesthetics This can provide flexibility in architectural designs and can reduce the number of needed Ethernet drops Can increase accuracy of location based devices and client can roam from Micro to Macro cell on same AP Primary 5GHz radio can service clients while the se...

Page 64: ...a port In addition future Smart Antennas will be released at future times 4 What is the Extension module slot used for The module slot on the AP 3802I AP 3802E and AP 3802P can be used to insert future modules Some of the proposed modules are 3G and LTE Small Cell Offload Bluetooth Beaconing BLE Future Wi Fi upgrades to meet new IEEE standards Video Surveillance Custom Applications using Linux 5 W...

Page 65: ...f uplink to the access point When operating in LAG the 3800 s multigigabit port will operate as a single GE port The following Cisco switching series support LAG with the APs Catalyst 3850 all models non Converged Access mode Catalyst 3650 all models non Converged Access mode Catalyst 4500 Sup 8E Catalyst 6500 Sup 720 or newer 9 What is ClientLink 4 0 How is it different from IEEE 802 11ac Wave 2 ...

Page 66: ...et 13 Can you advise how much system memory this access point has 1024 MB DRAM and 256MB flash 14 I would like to understand more about FRA and how RRM works Please refer the RRM guide at http www cisco com c en us td docs wireless controller technotes 8 2 b_RRM_White_Paper html 15 Does this product support TKIP Customers should be discouraged from running legacy TKIP as that feature has been depr...

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