Cisco Systems AIRRM3000ACAK9 manual Clients That Support Three Spatial Streams

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802.11n Primer - Understanding Spatial Streams

Clients That Support Three Spatial Streams

Clients with 3SS support are starting to become commonplace. As the new 802.11ac specification starts to get traction, many newer client adapters will have the newer chipsets and support 3SS as a subset to 802.11ac. Additionally, unlike many of our competitors the Cisco AP 1600/2600 and 3600 fully supports all the DFS channels for more usable channels in the 5 GHz range. More clients, especially 802.11ac clients, will start to emerge supporting these newer channels in 802.11n modes as well.

Currently the most popular 3SS client is the Apple 2011 MacBook Pro, as it is based upon the Broadcom BCM4331 chipset and a small USB adapter by Trendnet, “TEW 684UB”, based on the Ralink chipset.

Additionally, the Intel 5300 and 6300 has supported 3SS for a long time. Perhaps because of the different hardware platforms this card is installed in, testers have observed good throughput on many notebooks (+320 Mbps) and reduced throughput on other notebooks such as 240 Mbps. If you experience low throughput using the Intel card, one suggestion might be to try a MacBook Pro or Trendnet adapter, and if they perform well try another notebook with the Intel card or perhaps open a case with Intel or the laptop manufacturer for a possible remedy. During the AP 3600 beta trials we observed differences in performance with different notebooks using the Intel 6300 card.

Note Sometimes it can be difficult to reliably maintain a 3SS link as it is easy for the client to rate-shift out of the 3SS mode. The client plays an important role in the ability to maintain a 3SS link, so it can vary with the quality of the client being used and the test environment.

The AP 3600 with its extra radio per band can use the extra redundant radio to beamform (thanks to ClientLink 2.0) and uses this to maintain the advantage of 3SS links. Cisco ClientLink 2.0 can also improve the overall performance of 802.11n clients using 1, 2 and 3 spatial streams and legacy .11a/g clients.

Understanding Beamforming – ClientLink 1.0 and 2.0

ClientLink 1.0 was first introduced with the AP 1250 and AP 1140 series Access Points; it is a method of creating a stronger signal on the downlink side for 802.11a/g clients by hearing the clients on the uplink and then adjusting the transmitter timing so the signal appears much stronger at the client end.

This feature used to be user configurable; however, starting with 7.2 code stream it is now on by default and is not user configurable as there is no benefit to disabling it.

The AP 3600 fully supports ClientLink 1.0 for 802.11a/g clients but has a greater advantage as it also supports all 802.11n clients including 1, 2 and 3 spatial stream clients. This capability is called ClientLink 2.0. There is a distinct advantage with ClientLink 2.0 over the 802.11n enhanced beamforming specification, as ClientLink 2.0 works with ALL clients today and does not require any client sounding or support (Figure 54).

Cisco Aironet Series 1600/2600/3600 Access Point Deployment Guide, Release 7.5

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Contents Cisco Systems, Inc Table of Contents AbstractAudience Choosing the Right Access Point ModelsAccess Point Portfolio Placement AP 3600 Models and Eco-packs Differences between the AP 3600 and AP 3500 Access Points Bottom of AP 3600 Unit AP 3600 Feature Module Support Differences between the AP 3600 and APDifferences between the AP 3600 and AP Introducing Cisco Aironet 1600 Series Access Point Cisco Clean Air Express Comparison of CleanAir featuresAccess Point Physical Hardware and Mounting Options Comparison 3600, 2600 and 1600 series Access PointsMechanical Drawing of the AP 2600 and the AP Channel Rail Adapters Cisco Part Number AIR-CHNL-ADAPTER Recessed and Flushed Ceiling Grid ClipsAIR-CHNL-ADAPTER left Slides onto the Rails Wall-mounting the AP Changing the Color of an AP Unique Installations Clean Rooms HealthcareAbove Ceiling Tiles Example of how to hang an AP above the ceiling tiles Stadium/Harsh Environments Areas with High VibrationWarehouse and Factory AP Placement in Warehouse Environment Ethernet Cable Recommendation Installations at Very High Altitudes Access Point Spacing RecommendationsInstallations Inside and Around Elevators For use with AP 1600/2600 and 3600e Access PointsExternal Antenna Options and Patterns External Antenna Options and Patterns External Antenna Options and Patterns External Antenna Options and Patterns External Antenna Options and Patterns AP 3600i, AP 2600i, and AP Radiation Patterns for the AP 3600i @ 2.4 GHz Radiation Patterns for the AP 2600i @ 2.4 GHz Understanding External Antenna Deployments Radiation Patterns for the AP 1600i @ 2.4 GHzUnderstanding External Antenna Deployments Understanding External Antenna Deployments Antenna Placement Understanding External Antenna Deployments 802.11n Primer Understanding Spatial Streams AP 3500i/e is a 2x32 system supports up to 2 transmit chains AP 3600 4 Transmitters and 4 Receivers per Radio Band Clients That Support Three Spatial Streams Understanding Beamforming ClientLink 1.0ClientLink Site Survey Considerations Site Survey Sensitivity and SNR General Considerations Regarding Access Points 802.11ac Primer How is it different from 802.11n? 802.11ac Primer How is it different from 802.11n? Typical Wave-1 data rates @ 2 and 3 spatial streams Understanding 802.11ac and the option module AP 3600 Radio Module Cisco Part Number AIR-RM3000AC-x-K9=Radio Module Operational Overview Switches that support the AP Understanding 802.11ac and the option module Current channel allocation plan US Theater Client Band Steering 802.11ac Client RecommendationsRadio Interfaces and Understanding Client Associations USB clients available todayTroubleshooting the module basics Understanding RF radio interfacesThings to look for if the module is not found Quick Look at a few Non-Optimal Installations Patch antenna against a metal fenceAbout Quick Look at a few Non-Optimal Installations Misc. Questions and Answers Which AP is best for manufacturing and warehouse areas?Misc. Questions and Answers AP 3600 datasheet AP and controller datasheets URL Links and Other ResourcesURL Links and Other Resources

AIRRM3000ACAK9 specifications

Cisco Systems has long been a leader in networking solutions, and one of its standout offerings in the wireless access point market is the AIR-RM3000-AK9 model. This device is designed to provide high-performance and reliable wireless connectivity for a wide range of applications, making it an ideal choice for organizations that demand robust networking capabilities.

One of the main features of the AIR-RM3000-AK9 is its dual-band operation, which allows it to operate on both the 2.4 GHz and 5 GHz frequency bands. This dual-band capability enables the access point to support a greater number of devices and deliver higher data throughput, thereby enhancing the overall user experience. The access point can automatically select the best band, ensuring optimal performance based on network conditions and user requirements.

The device also supports the latest Wi-Fi 5 (802.11ac) standard, delivering impressive wireless speeds and improved capacity compared to previous generations. With Multi-User Multiple Input Multiple Output (MU-MIMO) technology, the AIR-RM3000-AK9 can communicate with multiple devices simultaneously. This feature is particularly advantageous in crowded environments, as it helps to reduce latency and increase overall network efficiency.

Security is another critical aspect of the AIR-RM3000-AK9. It offers advanced security protocols such as WPA2 and WPA3, ensuring that data remains protected as it traverses the wireless medium. Additionally, with Cisco's identity and access services, organizations can manage user access and maintain compliance with security policies.

The access point is also designed for easy deployment and management. With support for Cisco DNA Center, network administrators can leverage a centralized platform for monitoring, troubleshooting, and optimizing network performance. This capability is essential for reducing operational costs and improving overall network reliability.

Moreover, the AIR-RM3000-AK9 features advanced Quality of Service (QoS) capabilities to prioritize traffic, ensuring that critical applications receive the bandwidth they need for seamless operation. This feature is particularly beneficial for organizations that rely on real-time applications such as video conferencing and VoIP.

In summary, Cisco Systems AIR-RM3000-AK9 access point stands out due to its dual-band operation, support for Wi-Fi 5, MU-MIMO technology, robust security features, and ease of management. These characteristics make it an excellent choice for businesses seeking to enhance their wireless networking capabilities while ensuring high performance and security.
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