Table of Contents
- Overview of the AP-702W.
- Physicals / Hardware details, mounting options, bracket choices, and installation considerations.
- Powering options, antenna patterns, switched ports, AP placement, and so on.
The Cisco AP-702W Series Access Point targets Multi-Dwelling-Unit (MDU) deployments, such as customers requiring support for Higher Education, Hospitality, college dorm-rooms, K-12 classrooms, and healthcare, seeking a high-performance in-room Wireless + Wired Access Device.
- Combined hardware switch and wireless AP.
- 4 x 10/100/1000BASE-T local Ethernet ports for wired device connectivity.
- 1 local Ethernet port includes Power-Over-Ethernet (PoE) out.
- 1 x 10/100/1000BASE-T Power-Over-Ethernet (PoE) uplink port.
- 802.11n 2x2:2 simultaneous dual band 2.4 GHz and 5 GHz support.
- Compact form factor designed for in-room installations.
- Integrated 2.4 GHz 2 dBi and 5 GHz 4 dBi antennas.
- Small footprint 6 x 4 x 1.6 inches.
- Wi-Fi Standards - 802.11a/b/g/n
- Max Data Rate - 300 Mbps per radio
- Radio Design MIMO: Spatial Stream - Dual-Radio, 2x2:2
- Local Ethernet Ports - 4xGE
- Powering Capability - 1xGE port PoE out
- Data Uplink (Mbps) - 10/100/1000
- Power - 802.3af/at, AC Adapter
- Security Lock - #6 Torx screw, Kensington lock
- Support for Cisco Radio Resource Management (RRM)
- Maximum number of clients per AP = 200
- Support for Cisco Band Select
- Support for VideoStream and Adaptive wIPS
- Rogue AP detection support
- Mesh Support
- Office Extend
- Explicit Beam-forming
- Cisco ClientLink
- IGMP Snooping for IP TV multicast Join
- Managed local-switched ports
- Tunneling Ethernet Ports
- Split-Tunneling Ethernet ports
As mentioned in Figure 1, the AP-702W is designed to be mounted on an existing electrical box or network outlet box. Because of the vent holes on the device, it is not designed for ceiling mounting but may be mounted on the wall close to the ceiling so long as there is at least a 3-inch gap between the top of the unit and the ceiling for heat dissipation.
The default wall bracket is designed to allow the four switched ports to be accessible for downstream devices. It is not recommended (or supported) to use the downstream switched ports to connect additional APs or other heavy upstream traffic devices such as additional switches and so on.
The AP-702W is designed to accept power via Power over Ethernet (PoE) or by using a local “brick” style power supply. Because the AP-702W has the ability to provide PoE out on port #4, the unit draws in an excess of 15.4 Watts (802.3af) specification, and therefore it is recommended that PoE+, 802.3at, or local power supply Cisco part number AIR-PWR-C be used.
When the AP is first powered on, if powered via Power over Ethernet (PoE) it will negotiate power using the Cisco Discovery Protocol (CDP) and/or Link Layer Discovery Protocol (LLDP). By using these methods, the AP-702W will ask for 15.4 W initially starting up with that amount of power. During the Power On Self Test (POST) it will discover that it has a port on PSE LAN4 capable of producing PoE out, so it will then attempt to negotiate for additional Ethernet power via the same methods for that port. If additional power is available, it will switch from 802.3af (15.4 W power) to PoE Plus / 802.3at power. The amount of power it negotiates varies with the version of code being used.
If the code version is 7.6, it will request 30 W. If the code version is 8.x, it will request 22.1 W. If the AP is successful in negotiating the higher PoE power from an 802.3at or PoE+ source, the AP-702W will then come up and allow the PSE LAN4 port to provide Class 2 PoE out at 6.49 W (7W with cable losses).
Note At this time there is no method of disabling the “ask” for additional power if high power is present. There is a feature request to better handle this in the future, but if the goal is to have the AP-702W not ask for additional power, then a work around would be to configure the powering device to only allocate 15.4 W (802.3af) power on the port that the AP-702W is attached.
PoE Budget 1 (Watts)
Note If the unit is powered by 802.3at (PoE+) then the device can deliver PoE out of port 4 at 7 W output. If 802.3af (15.4 W) is desired out of Port 4, then the local power supply AIR-PWR-C must be used.
As mentioned, the AP-702W is designed for wall mounting and so it may have a slightly smaller cell coverage area than a conventional AP that is typically mounted physically higher on a ceiling. This is fine, because Cisco Radio Resource Management (RRM) will learn and properly balance out the channel assignments, and clients will roam smoothly when there is a mixture of ceiling and wall mounted APs.
Roaming, channel assignments, and RF power all function well with the AP-702W. Its antenna technology comprising two transmit radios and two receive radios in each band called 2x2 in a Multiple Input Multiple Output (MIMO) configuration support two spatial streams (2SS) together referenced as 2x2:2. For more on the benefits of 802.11n, see the following URL: http://www.cisco.com/c/en/us/solutions/collateral/enterprise-networks/802-11n/
The 4 x 10/100/1000BASE-T local Ethernet ports support half and full duplex mode, auto-negotiation, and MDI/MDIX Auto-Sensing. Devices you connect must support auto-negotiation if you connect with another mode, for example—hard configured speed and so on. The port may not be enabled, and in some cases the ports are not managed, depending on the version of code, for example 188.8.131.52 (the initial release).
Note VLAN support is available in release 8.0. See Configuring VLANs in Release 8.0 at the end of this guide for details.
Due to the early release of the 184.108.40.206 code, the
enable/disable allcommand was not integrated, so you must configure each AP and each port, one by one. With code 8.0 and later, a more refined control along with VLAN support is being added to these ports.
When configuring the AP-702W for PoE out on port 4, it is important to verify that you have at least 16.1 W when powering the unit by PoE. So, the AP will require PoE+ or higher power than what can be provided by 802.3af (15.4 W).
The PoE needs to be at full power. You can use PoE+, 802.3at, local power supply, or Cisco Power Injector 4 Cisco part number AIR-PWR-INJ4 which provides higher PoE power. The AP-702W will not be able to provide PoE out if a 15.4 W injector, such as the AIR-PWR-INJ5 or 802.3af power, is used.
For more on PoE, see Table 1 .
NoteFor more on LEDs and mounting options please refer to the AP-702W quick start guide and AP specifications at this URL:http://www.cisco.com/c/en/us/products/collateral/wireless/aironet-700-series/
If you have a Wi-Fi device such as an AP and you are going to use another AP in the vicinity on a different channel, it is recommended that you space each AP apart by approximately 6 feet (2 meters). Avoid clustering the APs or the antennas from different APs together because this could cause degradation in performance. The recommended distance is based on the assumption that both devices operate in the unlicensed band and do not transmit RF energy more than 23 dB, that is, 200 mW. If higher power is used, space the devices farther apart.
Should you have other devices that transmit, especially if they operate in the same frequency ranges, for example, frequency hopping legacy APs or other devices that operate with close frequency to those of the APs (think below or above the 2.4 and 5 GHz band), you should consider moving or separating the devices as far apart as can reasonably be done. After you have done this, check for interference by testing both devices at the same time under heavy utilization (load) and then characterize each system independently to see how much, if any, degradation exists.
Warning In order to comply with FCC, EU, and EFTA RF exposure limits, antennas should be located at a minimum of 7.9 inches (20 cm) or more from the body of all persons. See the installation guide under declaration of conformity for more on this.
When installing APs near other electrical or telecommunications equipment, keep all wiring and metal away from the antennas and avoid placing the antennas near electrical lines. Do not route wiring electrical or Ethernet in the near field (6-15 inches) of the antenna. Try to refrain from installing the AP in the electrical closet because the best place for the AP is as close to the users as possible/practical. If you have remote antenna cables from in a closet, you may be required to use Plenum rated cable (see local fire/safety regulations for more on this).
It is considered a good practice to conduct a site survey to assess cell coverage and look for problem areas such as poor RF coverage or high retries. Always try to install the AP as close to the actual users as possible or practical to do so.
If you have done a site survey with a previous product, chances are that the survey is still valid and you only need to perform simple checks to verify that coverage holes or problem areas do not exist.
While cell sizes are similar, each higher end AP model employs methods that allow the user to experience higher data rate connectivity with less retries. For example, using higher MCS rates, Spatial streams, or Cisco’s ClientLink beam-forming technology. So, the take away is that the client experiences a higher performance and faster connectivity, but it is not designed to change the actual cellular coverage area so surveys maintain their validity across different AP models.
The AP 702W uplink port connected to the controller must be set to trunk. The AP will set its IP address (and therefore its management interface) in the untagged / native VLAN. The AP VLAN is assigned by setting the right native VLAN on the trunk.
Client traffic can be assigned to different VLANs by assigning these VLANs on the AP 702W's trunk port and then configuring the 4 Ethernet ports specifying the VLAN per port on the Wireless controller software AP configuration.
Once the LEDs are enabled, connect a client to one of the ports (1 - 4) on the 702W. The Green LED on the 702W should be off because the ports are not yet enabled. Once the ports are enabled, the Green light will turn on.
Now, verify if the client is able to receive an IP on each of the different VLANs. You should be able to do an IP config release and renew, and physically move the client across ports 1-3 (verifying the different VLANs and confirming that port 4 remains disabled). At this point, the ports that are enabled should work.
Note On disabling access VLAN, vlan_valid in the lan_port info structure will be set to FLASE and vlan_id will be set to 0. When VLAN is disabled on a port, it sends untagged packets towards WAN and internal AP software.
1. Always try to mount the AP as close to the users as possible for best performance. Be aware of the environment; for example, hospitals have metal doors and the coverage can change when the doors close or old buildings can have metal grid work in the plaster or asbestos. Avoid mounting the AP or antennas near metal objects because doing so can change the coverage area.
2. When using the 2.4 GHz frequency, the same 1, 6, and 11 channel scheme is used as is the 5 GHz channel scheme. Avoid putting all the APs on the same channel, and reuse channels as you can. See our other deployment guides for more on this topic.
4. While site surveys are generally recommended, if the design is done at half power and Cisco RRM is in place, sometimes a limited site survey (coverage check) is adequate for smaller venues. If this is a very challenging environment such as train connectivity, Gas and Oil verticals, large hospitals, and so on, Cisco has an Advanced Services team that can be contracted to help you get up to speed or perform your installation. See your Cisco account team for more information.
Generally speaking the AP 3700e, 3600e, or 2700e would be the first choices because these external antenna models have the highest operating temperature range, -20 to 55C. The AP-1600 can also be used but it has a slightly lower operating temperature, -20 to 50C. If temperature is not a concern then the internal antenna “I” series 1600, 2600, and 3600 may be used.
The newer AIR-PWR-INJ5 is a low-cost injector for use with 702i, 1600 and 2600 Series Access Points products. It is a 802.3af (15.4 W) injector. The AIR-PWR-INJ4 is a more powerful injector designed to work with the AP-702W, AP-3700, and AP-2700. The AIR-PWR-INJ5 can be used with the AP-702W but not if the PoE output port #4 is required.
2. AP and controller Datasheets: http://www.cisco.com/en/US/products/hw/wireless/index.html
3. Cisco Aironet Series 2700/3700 Access Points Deployment Guide: http://www.cisco.com/c/en/us/td/docs/wireless/technology/apdeploy/7-6/
4. Cisco antenna reference guide: www.cisco.com/go/antenna-ref
5. Why buy Cisco brand antennas: http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps10981/
6. Understanding antenna patterns and their meanings: http://www.cisco.com/en/US/prod/collateral/wireless/ps7183/ps469/
7. Cisco Guest Access Deployment Guide: http://www.cisco.com/en/US/docs/wireless/technology/guest_access/technical/reference/4.1/
8. Cisco Schools WLAN Deployment Guide: http://www.cisco.com/en/US/docs/solutions/Verticals/Education/SRA_Schools/
9. The Apple Bonjour / Apple TV Deployment Guide: http://www.cisco.com/en/US/partner/products/hw/wireless/ps4570/
10. Optimizing Enterprise Video Over Wireless LAN: http://www.cisco.com/en/US/prod/collateral/wireless/ps6302/ps8322/ps10315/ps10325/
11. Cisco 7925 IP Phone deployment guide: http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7925g/7_0/english/deployment/guide/
12. Cisco Mobility Services Engine – WLAN location deployment guide: http://www.cisco.com/en/US/products/ps9742/products_tech_note09186a00809d1529.shtml
13. WLAN Design Guide for High Density Client Environments in Higher Education: http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps10981/
14. Mobility Design Guides: http://www.cisco.com/en/US/netsol/ns820/networking_solutions_program_home.html
15. Software support and downloads: http://www.cisco.com/tac
16. New Generation of Cisco Aironet Access Points: http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps10981/
17. 802.11ac Customer Use Cases: http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps13367/
18. Adaptive Radio Modules: http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps11983/
19. Cisco Aironet Access Point Module for 802.11ac Data Sheet: http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/
20. 802.11ac – The Fifth Generation Wi-Fi Technical Whitepaper: http://www.cisco.com/c/en/us/products/collateral/wireless/aironet-3600-series/
21. Getting Started Guide: Cisco Aironet 702W Series Access Points: http://www.cisco.com/c/en/us/td/docs/wireless/access_point/702W/quick/guide/