real-world wi-fi capacity / interference testing
DESCRIPTION
2011. Real-World Wi-Fi Capacity / Interference Testing. Top (Undeniable) Takeaways. 1. LONG. MEDIUM. SHORT. Ruckus continues to deliver the best performance at long ranges Downlink represents 80%+ of today’s enterprise traffic mix, Ruckus excels - PowerPoint PPT PresentationTRANSCRIPT
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Real-World Wi-Fi Capacity / Interference Testing2011
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2 | Tom’s Test Results
Top (Undeniable) TakeawaysRuckus continues to deliver the best performance at long ranges
Downlink represents 80%+ of today’s enterprise traffic mix, Ruckus excels
ZoneFlex delivers more aggregate throughput for high-capacity client environments
Ruckus is the only vendor to mitigate interference
Airtime fairness is critical and works best with Ruckus
Ruckus provides all around consistency across all tests
SHORTMEDIUM
LONG 12
3
56
“”
Ruckus puts forth the best effort in the largest number of tests [and does so] with a mere 2x2:2 design and through engineering attention to the factors necessary to provide a high-quality wireless experience in increasingly hostile RF conditions.
T H E B O T T O M L I N E
4
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3 | Tom’s Test Results
What was the Big Difference?THEM US
Fixed 1:1 relationship between Wi-Fi radios and antennas
Dynamic 1:manyrelationship between Wi-Fi radios and antennas
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4 | Tom’s Test Results
Tom’s Test Environment
DUT
100’ (30m)LoS
10’ (3m)LoS
70’ (21m)LoS
OFFICE BUILDING DETAILS▪20,000+square feet▪6” sheetrock interior walls,
metal studs▪Steel frame▪Tilt-up concrete slab▪12” stucco exterior walls▪5’ tall, 2” cubicle walls▪Noise floor: -90dBm
DUT Device (AP) Under TestSingle client test locationsClients used for capacity and interference testing
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5 | Tom’s Test Results
A Real Wi-Fi Testbed
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6 | Tom’s Test Results
HP E-MSM460Dual-band 802.11n(3x3:3)
CiscoAironet 3502i
Dual-band 802.11n(2x3:2)
Airport Extreme A1354
Dual-band 802.11n(3x3:2)
ArubaAP125
Dual-band 802.11n(3x3:2)
MerakiMR24
Dual-band 802.11n(3x3:3)
RuckusZoneFlex 7363
Dual-band 802.11n AP
(2x2:2)
Standalone Standalone Cloud controlled
version 5.5.0.0-01-9514
Cisco 4402(ver. 7.0.98.0)
Version7.5.1
Aruba 3200ArubaOS 6.0.0.1
MerakiEnterprise
Cloud Controller
ZoneDirector 1106 controller
(ver. 9.1.0.0.38)
Devices Under Test
Default (out of box) configuration used for all DUTs
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7 | Tom’s Test Results
▪Tools used▪ IxChariot 7.0 server and endpoints▪ IxChariot default WLAN high throughput
TCP script using 1MB file transfer▪ 300+ tests run (including client rotations)▪ Open: no encryption
▪Single client testing▪ Dell Latitude E6410 laptop (3x3:3)
▪ Windows 7 Professional OS▪ Intel Core i7 2.67GHz with 4GB RAM▪ Intel Centrino Ultimate-N 6300 AGN
(driver version 13.1.1.1)
▪Multi-client testing▪ 60 Dell Vostro laptops
▪ Intel Core i3 - 2.27 GHz with 3 GB RAM▪ MS Windows XP professional SP3▪ DW1520 Wireless-N WLAN half-mini card (Broadcom)▪ Driver 5.60.48.35
Test Details
1. Non-802.11n interference• 2.4GHz interference generator
2. Co-channel interference▪60 laptops (5GHz) continuously
downloading 1MB file over same channel from different AP
INTERFERENCE SOURCES
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8 | Tom’s Test Results
What Was Measured1. 5 GHz downlink TCP performance at 10’ LoS (no interference)
2. 5 GHz uplink TCP performance at 10’ (3m) LoS (no interference)
3. 5 Ghz downlink TCP performance at 70‘ (21m) LoS (no interference)
4. 5 GHz uplink TCP performance at 70‘ (21m) LoS (no interference)
5. 5 GHz TCP downlink performance at 70‘ (21m) LoS (with interference)
6. 5 GHz TCP uplink performance at 70‘ (21m) LoS (with interference)
7. 2.4 GHz downlink TCP performance at 100‘ (30m) NLOS (no interference)
8. 2.4 GHz uplink TCP performance at 100' (30m) NLOS (no interference)
9. 2.4 GHz downlink TCP performance at 100' (30m) (with interference)
10. 2.4 GHz uplink TCP performance at 100' (30m) (with interference)
11. 5 GHz TCP Uplink aggregate throughput (with 60 clients)
12. 5 GHz TCP downlink aggregate throughput (with 60 clients)
13. 5 Ghz TCP bi-directional aggregate throughput (with 60 clients)
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9 | Tom’s Test Results
Non-802.11 Interference (2.4 GHz)Channel Utilization With No Tests Running
Amplitude of RF transmission over time
Interferer transmission
Channel utilization
TIM
E
CH A NN E L S
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10 | Tom’s Test Results
Non 802.11 Interference (2.4 GHz)Channel Utilization During Single Client Performance Tests
RF interference + Wi-Fi client transmissions (-50dBm to -60dBm)
Break between tests
85% channel utilization
CH A NN E L S
TIM
E
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11 | Tom’s Test Results
802.11n Co-Channel Interference (5 GHz)Channel Capacity During Multi Client Performance Tests
95% channel utilization
Wi-Fi transmissions (-50dBm)
Test begins
CH A NN E L S
TIM
E
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12 | Tom’s Test Results
Rate/Range Comparison (2.4GHz)
Meraki MR24HP E-MSM460
Aruba AP125Apple AirPort Extreme
Ruckus ZoneFlex 7363
Cisco Aeronet 3502i
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13 | Tom’s Test Results
Rate/Range Comparison (5GHz)
Ruckus ZoneFlex 7363Meraki MR24HP E-MSM460
Cisco Aeronet 3502iAruba AP125Apple AirPort Extreme
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14 | Tom’s Test Results
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
126.15
136.55
113.68
128.47
157.47
129.51
Uplink TCP Performance
Mbps
10’ (3m) Throughput Testing (5GHz)
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 10 20 30 40 50 60 70 80 90 100110120130140150160170180
156.03
166.25
152.42
179.10
169.52
161.45
Downlink TCP Performance
Mbps
L E G E N D
Channel: 36 (40 MHz wide)Distance: 10 feet line of sightInterference: NoneClient: Single 802.11n client
(3 stream capable)
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15 | Tom’s Test Results
70’ (21m) Throughput Testing (5GHz)
Mbit/s
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
103.33
103.45
113.68
101.69
114.70
136.11
Downlink TCP Performance
Mbps
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 10 20 30 40 50 60 70 80 90 100 110 120
97.43
108.23
100.44
112.86
82.90
89.63
UplinkTCP Performance
Mbps
L E G E N D
Channel: 36 (40 MHz wide)Distance: 70 feet line of sightInterference: NoneClient: Single 802.11n client
(3 stream capable)
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16 | Tom’s Test Results
70’ (21m) Throughput Testing (5GHz)
Mbit/s
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
17.76
67.93
56.30
67.81
10.27
88.55
Downlink TCP Performance
Mbps
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
2.15
24.82
48.11
37.53
0.50
78.89
Uplink TCP Performance
Mbps
L E G E N D
Channel: 36 (40 MHz wide)Distance: 70 feet line of sightInterference: Co-channel (60 clients to different AP)Client: Single 802.11n client
(3 stream capable)
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17 | Tom’s Test Results
100’ (30m) Throughput Testing (2.4GHz)
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
27.34
33.81
38.37
35.28
51.85
88.55
Downlink TCP Performance
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
42.14
32.94
48.11
37.53
69.11
76.26
UplinkTCP Performance
Mbps Mbps
L E G E N D
Channel: 1 (20 MHz wide)Distance: 100 feet non line of sightInterference: NoneClient: Single 802.11n client
(3 stream capable)
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18 | Tom’s Test Results
100’ (30m) Throughput Testing (2.4GHz)
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 5 10 15 20 25 30 35
17.24
24.15
28.28
23.79
0.50
31.64
Downlink TCP Performance
Mbps
Apple Extreme
Aruba 125
Cisco 3500
HP 460
Meraki 24
Ruckus 7363
0 5 10 15 20 25 30 35
7.52
10.42
27.83
10.39
0.50
28.98
Uplink TCP Performance
Mbps
L E G E N D
Channel: 1 (20 MHz wide)Distance: 100 feet non line of sightInterference: 2.4 GHz interference generatorClient: Single 802.11n client
(3 stream capable)
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19 | Tom’s Test Results
Apple
Meraki
Cisco 3502i
Aruba AP125
HP E-MSM460
Ruckus ZF7363
0 20 40 60 80 100
54
0
54.34
82.64
85.07
103.99
Bi-Directional (75% downlink, 25% uplink)
Apple AirPort Ex-treme
Cisco 3502i
Meraki MR24
Aruba AP125
HP E-MSM460
Ruckus ZF7363
0 10 20 30 40 50 60 70 80 90 100
54
62
42*
69
77
97
Mbps*failed to complete test run
High Capacity Wi-Fi Testing (5GHz)
AirPort Extreme
Cisco 3502i
Meraki MR24
Aruba AP125
HP E-MSM460
Ruckus ZF7363
0 20 40 60 80 100 120
3.8
38
47
76
88
111
Mbps
TCP Downlink TCP Uplink
IxChariot Aggregate TCP Throughput: Continuous 1MB Download from 60 Clients
Failed to finish
Failed to finish
Mbps
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20 | Tom’s Test Results
More Downlink Capacity (5GHz)IxChariot Aggregate TCP Throughput: Continuous 1MB Download from 60 Clients
Ruckus 7363111
HP E-MSM460
Aruba AP125
Cisco 3502iMeraki 24*
AirPort Extreme*
88
76
47
4
38
*Meraki and Apple unable to complete test runs
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21 | Tom’s Test Results
More Uplink Capacity (5GHz)IxChariot Aggregate TCP Throughput: Continuous 1MB Download from 60 Clients
Ruckus 736396
HP E-MSM460
Aruba AP125
Cisco 3502i
Meraki 24*
AirPort Extreme*
77
69
42
54
62
*Unable to complete test runs
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22 | Tom’s Test Results
High Capacity Wi-Fi Testing (5GHz)IxChariot Aggregate TCP Throughput: iPads and Laptops
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23 | Tom’s Test Results
Airtime Fairness Matters More Now
▪Proliferation of different devices
▪Widely varying 11n capabilities:▪ Peak iPad throughput = 13 Mbps▪ Good .11n laptop > 100 Mbps
▪User revolt with any disproportional impact on bandwidth from growing quantities and variety
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24 | Tom’s Test Results
Not All ATF Approaches are Fair
Fails to support client count
Starves iPads 100%
Perfectly Proportional
Impact
Starves Laptops
100%
Ruckus
Meraki
HPCisco
ArubaApple
Test: Single AP to 10 iPads +
1, 10, or 60-count 802.11n laptopsProportionality of Traffic Impact from Laptop Additions
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25 | Tom’s Test Results
Interference
▪Patented technology that combines:▪ Smart antenna arrays▪ Best path selection algorithms▪ Advanced quality of service
engine▪ Smart mesh RF routing▪ Centralized Wi-Fi management
▪Adapts to real-time changes in environmental conditions
▪Extends Wi-Fi coverage 2 to 3 times
▪Radically simplifies deployment
What’s Behind Tom’s Results?
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26 | Tom’s Test Results
Adaptive Wi-Fi Control
▪Patented adaptive antenna array combined with expert (best path) signal control software
▪Directional, high-gain multi-element smart antenna
▪Continually picks the best signal path to clients
▪Adaptive antenna switching and dynamic beamsteering
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27 | Tom’s Test Results
And Clever Networking, Too…Smart meshing ▪ Autonomously optimized, self-organizing
networks, including hybrid meshing▪ Adapt automatically (and carefully) to
changes in environment and interference
Dynamic channel management
▪ Periodic survey of channel performance▪ Automatic adjustment where optimal▪ Channel chosen based on best available throughput
Band steering ▪ Balances client load across bands by redirecting clients based on capabilities
▪ Maximizes overall throughput
QoS at AP level ▪ Application queues per client▪ Prioritization of voice, video, and data
Airtime fairness ▪ Round-robin time allocation based on client capabilities▪ Prevents slower clients from throttling faster ones
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28 | Tom’s Test Results
Redefining WLAN Price/Performance
1.Deploy in
half the time at half the cost
Unmatched performance at range
Bigger, better, more affordable wireless
Simplicity brought to large-scale wireless LANs
Indoor/outdoor802.11n APs
ScalableWLAN controllers
out of data path
SmarterWLAN
applications
2.100%
performance increase over
any other 802.11n WLANs
Simple, robust remote management of APs and WLANs
RemoteWi-Fi systemsmanagement
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29 | Tom’s Test Results
Unrivaled Consistency