Gigabit WLANs Need Gigabit WLAN Analysis
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Transcript of Gigabit WLANs Need Gigabit WLAN Analysis
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Jay BotelhoDirector of Product [email protected] me @jaybotelho
Gigabit WLANs Need Gigabit WLAN Analysis
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Administrivia
• All callers are on mute‒ If you have problems, please let us know via the Chat window
• There will be Q&A at the end‒ Feel free to type a question at any time
• Slides and recording will be available:‒ Via a follow-up email
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Agenda
• 802.11ac – The State of Affairs
• WLAN Analysis – Then and Now
• OmniPeek for the fastest 802.11ac Networks
• Demos
• Industry-Leading Analytics
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802.11acThe State of Affairs
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802.11ac Highlights
• Wider channel bandwidths; More MIMO‒ 80 MHz and 160 MHz channel ‒ Support for up to 8 spatial streams
• Multi-user MIMO (MU-MIMO)‒ Multiple STAs transmit or receive independent data streams
simultaneously‒ Downlink MU-MIMO (one transmitting device, multiple receiving
devices) included as an optional mode
• Low level MAC and RF improvements‒ Beam forming improvements‒ MAC modifications (mostly to support above changes)‒ Coexistence mechanisms for 20/40/80/160 MHz channels, 11ac and
11a/n devices
• 802.11n “lessons learned”
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802.11ac vs. 802.11n
• Gigabit speed wireless with approximately 3 times the performance for the same power
• Better performance at any range with fewer dead spots
• More reliable connections for media streaming with beam-forming
• More Wi-Fi bandwidth on your mobile
• Only utilizes the 5 GHz band - much less prone to interference
• Backward compatible to 802.11 a/n
http://www.netgear.com/landing/80211ac/images/wp_netgear_802_11ac_wifi.pdf
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Example 802.11ac Configurations
http://en.wikipedia.org/wiki/IEEE_802.11ac
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802.11ac Adoption
The Farpoint Grouppredicts that criticalmass usage of802.11ac BYODclient devices willoccur in 2014 and802.11ac access pointinfrastructure in 2015.
February 2014http://v1.aberdeen.com/launch/report/market_alert/8853-MA-wireless-standard-adoption.asp?lan=US
“Abandon all doubt that 802.11ac is replacing 802.11n – today. Except in very limited or unbelievably-cost-constrained situations, I can’t see further installations of .11n making any sense.”
Craig Mathias, The Farpoint Group
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WLAN Analysis – Then and Now
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Then …
• Locally connected devices
• Commercially available USB devices
• Multiple devices for channel aggregation
10
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Now - The Issues Are Simple
• WLANs now exceed 1Gbps - analysis software must capture and process data at wired network speeds
• Traditional WLAN analysis not up to the task‒ Software
• Freeware and commercial “wireless only” analysis software not architected for gigabit speeds
‒ Hardware• WLAN adapters typically used in portable analysis are not capable
enough to analyze 802.11ac enterprise APs• Analysis can’t be done on the basis of management packets only• Sensors are expensive and don’t scale
‒ Reality: You’re probably not near the problem
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USB WLAN Adapters Not Up to the Task
• This is how analysis is done today
• Data > 433Mbps is simply ignored
• Analysis is incomplete
• And you don’t even know it!
1,300Mbps 433Mbps
=/
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New Technologies, New Methods
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WildPackets’ OmniPeek for the fastest 802.11ac networks
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OmniPeek – the Only Solution for 802.11ac WLAN Analysis
• Software designed to handle full duplex, 10G networks
• Flexible data capture for any situation
• Detailed analysis for every situation
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Software That Handles the Speed
Key findings and conclusions:• Omnipliance TL with OmniAdapter
10G card has a capture-to-disk rate of 20.94Gbps with no packet loss
• Capture-to-disk rate per 10G port of 10.47Gbps is the highest observed to date in testing of network analysis and recording appliances
• Using an OmniAdapter 40G card, the capture-to-disk rate was measured at 25.33Gbps with no loss in storing the data
• Provides analysis with full display of real-time statistics without impeding capture-to-disk performance
http://miercom.com/pdf/reports/20140109.pdf
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Flexible Data Capture
• Portable‒ Convenient‒ Real-time‒ Limited hardware
capability
• Remote‒ Anytime, anywhere‒ Uses most capable
capture devices‒ Cisco, Aruba,
Remote Ppcap, etc.
• Distributed/Forensics
‒ 24x7 WLAN analysis‒ WLAN recording for
post-incident analysis
Remote SoftwareProbe for 24x7 Operation
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Specific 802.11ac Solutions
•Cisco AE6000: 1-stream 802.11ac device compatible with OmniPeek
•OmniPeek v7.8 and above with latest Ralink OmniPeek driver
•Capturing 3 stream 802.11ac with Cisco Aironet 3700 and Aruba AP225
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Remote Adapters
Available for Cisco, Aruba and Meru Access Points
APs are “reconfigured” via the AP controller software
Allow the full capabilities of the AP to be leveraged
Allow an AP to be put into promiscuous mode and act like a direct-connected sniffing device
AP3700
Cisco 2504Corporate Network
Corporate Network
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Remote Pcap Support
Ruckus
Aerohive
Xirrus
Others
Remote Pcap support enables wireless captures directly from any AP that supports Remote Pcap
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Our Partners
Partner AP(s) Controller? Connection Bands
Cisco AP3700 Yes Remote (WRA) a//b/g/n/ac
Aruba AP-225 Yes Remote (WRA) a/b/g/n/ac
IAP-225 No Local (WRA) a/b/g/n
Meru Yes Yes Remote (WRA) a/b/g/n
Aerohive Yes Yes (Cloud) Remote (RemotePcap) a/b/g/n
Ruckus Yes Yes Remote (RemotePcap) a/b/g/n
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Industry-Leading Analytics
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Channel Aggregation
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Multi-Channel Analysis
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Wireless Roaming
Campus-wide deployments imply frequent roaming
Roaming is the cause of many wireless
issues
Voice and video are especially sensitive
Roaming analysis requires detailed and
accurate measurements
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Expert AnalysisSecurity policies monitored in real time Rapidly identify and resolve
wireless network issues
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Voice over Wi-Fi (VoFi)
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Wired and Wireless
Security protocols and policy
Ad-hoc networks
Wireless security attacks
QoS configuration and use
Signal strength
Dropped packets
and retries
AccessPoint Router
Air-link
PrivateNetworkor the
Internet
AuthServer
Ethernet Ethernet
WLANController
Tracking wireless packets onto the wired network
Wireless security attacks
QoS configuration and useVPN/MPLS
Dropped packets
and retries
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WildPackets Advantage
Remote data capture from commercial enterprise APs
First to support data capture and analysis of 802.11ac traffic
802.11n 3-stream (450Mbps) portable analysis
Comprehensive voice-over-wireless (VoFi) analysis
Industry-leading UI that makes troubleshooting effortless
Multi-channel and wireless roaming analysis
Both wireless and wired network analysis in the same solution
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Why WildPackets Is A Leader
• Protocol analysis since 1990
• WLAN analysis since 2001
• Many “firsts”
• Used by‒ 802.11 chipset vendors‒ Device manufacturers/OEMs‒ Technical Assistance Centers (TACs)‒ Wi-Fi Alliance and Certified Test Labs (CTLs)
• UI/Workflow
• Expert analysis
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Q&A
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#wp_wirelesspacketswith any questions, comments, or feedback.
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Follow us on SlideShare!Check out today’s slides on SlideShare
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Thank You!
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