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Aruba Networks, Inc. 4

Enabling High-Performance for Apple iPads in the Enterprise Aruba White Paper

Thousands of organizations around the world have deployed Aruba’s products to meet their campus wireless LAN,

branch networking and remote networking needs. Aruba Networks meets the ﬁve biggest challenges of deploying

iPads into an enterprise-class environment. To verify, Aruba performed extensive testing of iPad on Aruba wireless

LANs to verify enterprise-scale performance, integration, security, mobility, and battery life. In all cases, iPad passed

with ﬂying colors. We tested iPad connectivity in an Aruba network using a lab network that consisted of one Aruba

Mobility Controller 651-9 and two Aruba AP-105s. We used the Aruba corporate network in our Sunnyvale, CA

headquarters to test connectivity, performance, security, roaming and usability.

Aruba Delivers Scalable Performance in a High Density Network

When it comes to supporting high density of iPads in the enterprise, organizations can count on the Aruba WLAN.

Aruba’s Adaptive Radio Management (ARM) takes the guesswork out of RF management by using automatic, infrastructure-

based controls to maximize client performance and enhance the stability and predictability of the entire Wi-Fi network.

Key ARM features include:

• Band steering actively guides faster 802.11a/n clients, including Apple iPad, to the best available wireless channel

in the 802.11 5GHz frequency band. The result is better immunity from noise, fewer sources of interference, and

more available channels – and ultimately better network performance for end-user applications.

• Spectrum load balancing dynamically shifts Wi-Fi clients to available 802.11 channels instead of individual access point

radios. This technique helps prevent degraded network performance due to oversubscription of 802.11 channels.

• Co-channel interference mitigation across all access points and wireless clients that share the same 802.11

channel overcomes the challenges of densely populated deployments, such as lecture halls, airport lounges and

conference centers.

• Airtime fairness gives equal opportunity for all Wi-Fi clients to transmit and receive when they are associated to the

same access point radio, which is essential for dense client deployments.

With Aruba, organizations can be conﬁdent that their enterprise WLAN will deliver scalable performance, even in

dense Wi-Fi client deployments that are typical of iPads. Users can continue to use their favorite applications while

they move around the corporate campus or building for the vast majority of the workday.

Aruba WLAN makes it easier to deliver a consistent and positive experience for users of a wide variety of smart

mobile devices.

The results of Aruba’s extensive performance and operations tests for iPads are shown in Table 1. The band steering

test results are particularly interesting. In our extensive testing, iPad connected to the 5-GHz band 10 out of 10 times

when Aruba ARM band steering was enabled, which demonstrates that band steering improves network performance.

When Aruba ARM band steering was disabled, iPad connected seven to ﬁve times to the 2.4-GHz band, which shows

the unpredictable performance for iPad, depending on the time and place of network connectivity. Latest ArubaOS

software release is recommended for best performance of Apple iPad platform within an Aruba WLAN.

Connectivity and Performance

802.11n connectivity with WPA2-AES Pass

Range vs. Performance Pass

Band Steering Pass

Band Steering with stronger signal on 2.4-GHz Pass

Roaming with Band Steering Pass

Roaming with Spectrum Load Balancing Pass

Performance testing with Air Time Fairness Pass

Roaming from 5-GHz to 2.4-GHz and back Pass

Table 1

1 2 3 4 5 6 7 8 9 ... 17 18

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