802.11ac is important? Do you want to upgrade to 802.11ac? Why? 802.11ac addresses the speed and capacity challenges facing the next-generation unified access network
● Wi-Fi is the primary access method for all new devices.
● Cisco VNI trend data shows that by 2016 over half of all IP traffic will originate on fixed Wi-Fi.
● Chip manufacturers have accelerated their delivery timetables for 802.11ac to meet device manufacturers’ demands.
● Wi-Fi is assumed. Device manufacturers have never included Ethernet ports on smartphones or tablets, and they are no longer including Ethernet ports on laptops.
Benefits of 802.11ac
802.11ac offers longer battery life, more bandwidth, greater client density, and fast client adoption.
● Longer battery life: Better airtime utilization means devices are on and off the network more efficiently, conserving precious battery life.
● More bandwidth: Three to four times higher throughput than 802.11n means users have better experience for data, voice, video, virtual desktops, etc.
● Greater client density: More users and more devices per user can be accommodated.
Fast client adoption: Client devices such as smartphones and tablets are adopting 802.11ac faster than 802.11n.
802.11ac radios also support 802.11a/n clients.
● Most enterprise-grade access points provide at least two radios: 2.4 GHz for 802.11b/g/n and 5 GHz for 802.11a/n.
● 802.11ac is offered only in the 5-GHz band.
802.11g/a/n vs. 802.11ac
The differences are found in frequency, speed, modulation, battery savings, and channel width.
● Frequency Band: 802.11n operates in both the 2.4-GHz and 5-GHz band. Both 802.11a and 802.11ac operate in 5 GHz band only.
● Speed: Some of the latest generation of 802.11n access points have a maximum datarate of 450 Mbps. Wave 1 of 802.11ac provides a maximum datarate of 1.3 Gbps, and Wave 2 will offer a maximum datarate of 6.9 Gbps.
● Modulation: 802.11ac provides 256 quadrature amplitude modulation (QAM) vs. 64-QAM for 802.11n. Basically, when you have better modulation, you can transport more data. 802.11ac can operate up to three times faster than 802.11n.
● Battery savings: Since 802.11ac devices are more efficient over the air, they transmit for shorter intervals, conserving battery life. 802.11ac has been shown to improve battery life by up to 2x over 802.11n.
● Channel width: 802.11n allows a 20 MHz and 40-MHz channel. 802.11ac allows up to 80-MHz channels in Wave 1 and 160-MHz Channel in Wave 2.
Has the 802.11ac standard been ratified? Yes; the ratification and publication of 802.11ac by IEEE was completed December 9, 2013, and ANSI approved it on December 11, 2013. (The 802.11 timeline updates can always be found under the “RevCom & Standards Board Final or Continuous Process Approval” at http://www.ieee802.org/11/Reports/802.11_Timelines.htm.)
What is the difference between Wave 1 and Wave 2 of 802.11ac?
The biggest difference is that Wave 1 802.11ac is available now and the expectation is that 802.11ac Wave 2 will come to market in CY15.
● 802.11ac Wave 2 will require new hardware, so it will not simply be a software upgrade to current 802.11ac platforms.
● The main features of 802.11ac Wave 1 include: The maximum datarate is 1.3 Gbps; Channel bonding support for 80 MHz (mandatory); Three spatial streams, single-user multiple-input and multiple-output (MIMO); Two spatial streams are mandatory for non-battery-powered access points; Only one spatial stream is mandatory for battery-powered access points and clients; Faster modulation: 256-QAM
● The main features expected in 802.11ac Wave 2 include: Multi-user MIMO; Up to 8 spatial streams; 160-MHz-wide channels; Maximum datarate is 6.9Gbps
Why deploy 802.11ac Wave 1?
◦ You can expand your network and adopt 802.11ac Wave 1 today, instead of buying 802.11n or waiting for Wave 2, which won’t be available until 2015.
◦ 802.11ac Wave 1 represents fundamental improvements and enhancements to 802.11n in terms of client performance due to three to four times higher throughput than 802.11n.
◦ Device users can expect to have better experience for data, voice, video, virtual desktop, etc.
◦ Wider channel bandwidth in 802.11ac means more real estate to support higher client density in conference rooms, auditoriums, and stadiums.
◦ Client devices are adopting 802.11ac faster than 802.11n.
◦ Smartphones, tablets, and laptops are on and off the network faster with 802.11ac, thereby conserving battery life.
What benefits can I expect with 802.11ac Wave 2?
◦ MU-MIMO switch-like behavior will allow for an even higher number of concurrent Wi-Fi devices.
◦ Higher throughput is expected with the additional spatial streams and 160-MHz-wide channels.
How does Cisco support 802.11ac? Cisco also offers the Aironet 2700 and 3700 Series Access Points, both of which have integrated 802.11ac Wave 1 radios. Cisco also offers an 802.11ac module that can be added to the Cisco Aironet 3600 Series Access Points.
● The Cisco Aironet 3700 Series also support a modular architecture that allows expansion to the Wireless Security Module, the 3G Small Cell Module, and support for future technology such as 802.11ac Wave 2.
● Both the Cisco Aironet 3700 and 2700 Series supports Cisco’s High Density Experience (HDX) technology.
● Cisco’s HDX High-Density Experience is a purpose-built Innovative Chipset designed specifically for the high performance environments of 802.11ac.
● The features of HDX includes:
◦ Turbo Performance which Scales to Support More Devices
◦ Running High Bandwidth Apps
◦ Optimized Roaming which Intelligently Decides the Proper
◦ Access Point as People Move
◦ Cisco’s CleanAIr with 80MHZ channel support which mitigates interference and improves channel capacity
◦ Cisco’s ClientLink 3.0 which improves legacy and 802.11ac Client performance
◦ Cross AP Noise Reduction (future) which enables dense Access Point Coexistence/implementation
More Related Topics of Cisco Wireless APs & 802.11ac
Advanced Collaboration Demands a Multi-purpose Endpoint
- High-quality voice, video and conferencing
- Real-time video, integrated presence and viewing of shared documents
- Access to corporate cloud services and cloud apps
- Intuitive touch screen navigation and innovative personalization
The Smart Cisco Desk Phone? Cisco Desktop Collaboration Experience DX600 Series
- Always-On Collaboration for the Desk
- HD Voice and Video Communications
- Comprehensive UC suite
- Integrated Conferencing, IM & Presence
- On-demand Access to Cloud Apps and Services
- Personalize with Android
- IT Deployed & Managed
Why Cisco DX600?
…To be Continued…
More Related Cisco IP Phone Topics
Do you know something about the Cisco Catalyst 6900 Series 40 Gigabit Ethernet Interface Module for Cisco Catalyst 6500 Series Switches? Such as Cisco WS-X6904-40G-2T.
The module is designed to meet the increasing demand for aggregation of 10 Gigabit Ethernet on campus and data center, as well as for high-density 10 Gigabit Ethernet and 40 Gigabit Ethernet transport in the core.
Each port can accept a 40 Gigabit Ethernet C Form-Factor Pluggable (CFP) optics module or be converted to four ports of 10 Gigabit Ethernet with a FourX adapter, enabling customers to deploy 10 Gigabit Ethernet to meet current needs and be ready to transition to 40 Gigabit Ethernet without any disruption. The module can also be used in mixed mode, where one side of the card uses two CFP modules for 2 times 40 Gigabit Ethernet ports and the other side uses two FourX adapters for 8 times 10 Gigabit Ethernet ports.
The Cisco Catalyst 6900 Series 4-Port 40 Gigabit Ethernet Fiber Module is compatible only with Cisco Catalyst 6500 Supervisor Engine 2T.
Cisco Catalyst 6900 Series 4-port 40 Gigabit Ethernet Fiber Module can operate in a number of modes. Performance mode enables 80 Gigabit Ethernet performance by using two ports without oversubscription. In Oversubscribed mode, the module uses four ports with 2:1 oversubscription.
The 4-Port 40 Gigabit Ethernet Fiber Module provides up to 44 x 40 Gigabit Ethernet Fiber ports in a single Cisco Catalyst 6513-E chassis and 88 x 40 Gigabit Ethernet ports in a Cisco Catalyst 6500 Virtual Switching System (VSS) 4T. The module has two 40-Gbps connections (for a total of 80 Gbps) to the 2-Tbps switch fabric of the Cisco Catalyst Supervisor Engine 2T, providing 2:1 oversubscription when all four ports of 40 Gigabit Ethernet or 16 ports of 10 Gigabit Ethernet ports are active.
Cisco Catalyst 6904 modules support two types of CFP optics: CFP-40G-LR4 and CFP-40G-SR4, providing operational distances of up to 10-km over single-mode fiber and 100m over OM3 multimode fiber, respectively. FourX adapters support a variety of Small Form-Factor Pluggable Plus (SFP+) optics
Pluggable Optics for Cisco Catalyst 6900 Series 4-Port 40 Gigabit Ethernet Fiber Module
CFP Part Number
Maximum Distance and Cable Type
100m over OM3 multi-mode fiber, MPO connector
10 km over single-mode fiber, SC duplex connector
FourX coverter to convert each 40GE port into 4 10GE SFP+ ports
For up-to-date information about the end-of-life and end-of-sale status of Cisco Catalyst 6500 Series Switch compatible transceivers, visit: http://www.cisco.com/en/US/products/hw/modules/ps5455/prod_eol_notices_list.html.
Each of the 40/10 Gigabit Ethernet ports supports Cisco TrustSec technology and IEEE 802.1ae (MACsec) encryption. The 40/10 Gigabit Ethernet ports also support Security Group Access Control Lists (SGACL), also known as Role-Based Access Control Lists (RBACL), and both Layer 2 and Layer 3 Security Group Tagging (SGT) functionality.
More Cisco Optics Module Topics
The Cisco Catalyst 6904 4-Port 40 Gigabit Ethernet Fiber Module, fully compliant with the IEEE 802.3ba standard, complements this product portfolio.
The module also supports Virtual Switch Link (VSL) on all ports in both Oversubscribed mode and Performance mode.
Take a Look at WS-X6908-10G-2T or 2TXL-Feature of 6900 Series 8-Port 10 Gigabit Ethernet Fiber Modules