Cisco Aironet 1850 Series Guida di riferimento rapido

Cisco Aironet Series 1850 Access Point Deployment Guide

Channel Rail Adapters –Cisco Part Number AIR-CHNL-ADAPTER 5

Physical Hardware and Mounting Options of an AP 7

Wall Mounting the AP 11

Above the Ceiling Tiles 12

Stadium / Harsh Environments 14

Ethernet Cable Recommendation 15

Antenna Cable Recommendation 16

Access Point Spacing Recommendations 17

Installations in IDF Closets (Telecommunications or Other Electrical Equipment) 18

Installations Inside and Around Elevators 19

Understanding AP 1850 Powering Options 20

PoE Negotiation 21

Approved antennas and Radiation Patterns 23

Antennas for Outdoor Deployments 25

General Considerations –WLAN Best Practice Guidelines 35

802.11ac Wave-2 primer and the AP 1850 37

Clients Supporting 3 and 4 Spatial Streams 37

Understanding Channel Plans and Bonded Channels 38

Understanding Channels and How They Relate to the Client 40

802.11ac and Legacy Client Recommendations 42

802.11ac Devices on the Market 45

Variables Impacting Performance 46

A Quick Look at a Few Non-Optimal Installations 49

New features 55

Auxiliary Ethernet Port 55

USB Port 57

Understanding Multi-User MIMO 58

Checking the Access Point LEDs 61

Access Point Status LEDs 61

Ethernet Port LEDs 62

Q & A 63

References 64

Revised: January 25, 2017,

ChannelRailAdapters–CiscoPartNumberAIR-CHNL-ADAPTER

When mounting APs to ceiling channel rails, an optional channel adapter AIR-CHNL-ADAPTER is used. The channel adapter comes

in a two-pack and is attached to the ceiling grid clip.

Figure 1: Example of Channel Rails

Figure 2: AIR-CHNL-ADAPTER (left) Slides Onto the Rails

Figure 3: AIR-CHNL-ADAPTER Mounted to Rail Clip (left) and Finished Installation (right)

Revised: January 25, 2017,

Physical Hardware and Mounting Options of an AP

Figure 4: AP 1850 Model port view

Ports are easily accessible. Mode button is recessed and requires a tool such as a paperclip to engage.

Note the vent holes below the ports, avoid using chemicals or solvents around the AP as the ingress of such materials have the potential

to cause damage to the device.

AP 1850 has similar physical dimensions as other Cisco APs but with a few differences in physical appearance, most of which are

cosmetic changes to distinguish the different models. The mounting options and bracket configurations are identical and interchangeable

between Cisco 1140, 1600, 1700, 1850, 2600, 2700, and 3700 series APs.

Figure 5: Mechanical Dimensions AP 1850

Figure 6: Mechanical Dimensions AP 1850

Different installation options are available depending upon the requirements of the customer. Brackets are available from Cisco as

well as third-party companies. During 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.

Figure 7: Access Point Bracket Choices

If the AP needs to be mounted directly to a ceiling on the grid work, then AIR-AP-BRACKET-1 is flush mounted and has the lowest

profile. However, if the AP is mounted to an electrical box, other wiring fixture, inside a NEMA enclosure, or wall mounted, then

AIR-AP-BRACKET-2 is a better choice. The extra space in the bracket allows for wiring, and the extra holes line up with many

popular electrical boxes. When mounting the bracket to the ceiling grid work, some ceiling tiles are recessed. For this reason, two

different styles of ceiling clips, such as recessed and flush rails are available

Figure 8: Different Clips are Available for Attaching to Ceiling Grid Work

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