Super-fast Wi-Fi: Cisco, Ubiquiti access points top out at nearly 400Mbps
- 16 September, 2013 10:35
Earlier this year we tested several consumer-level 802.11ac routers. Here, we take a look at two enterprise-level access points. They're a part of the so-called "Wave 1" phase of the 802.11ac standard: both access points support up to three spatial streams and 80 MHz wide channels, offering theoretical data rates up to 1.3Gbps. But just as we saw with the 802.11ac routers, you won't get throughput rates nearly that fast.
Our test subjects were Cisco's Aironet 3602I AP with their 802.11ac module and Ubiquiti's UniFi AP AC. For the performance tests we used two clients: the Edimax AC1200 Wireless Dual-Band USB Adapter (two-stream 802.11ac) and the ASUS AC1750 Dual-band Wireless PCI-E Adapter (three-stream 802.11ac).
(Product review:Consumer-focused 802.11ac routers)
We found maximum throughput speeds in the range of 360M to 380Mbps range, similar to the rates found in the 802.11ac routers we tested earlier this year.
Cisco Aironet 3602I AP with 802.11ac Module
Cisco sent its Aironet 3602I Access Point ($1,495) loaded with their 802.11ac module ($500). Although the access point supports the standard Control and Provisioning of Wireless Access Points Protocol (CAPWAP), we used their Cisco 2504 Wireless LAN Controller for the testing.
The access point comes with two integrated 2.4GHz/5GHz dual-band radios. The 802.11ac module that attaches to the bottom of the access point adds a 5-GHz radio supporting three spatial streams. The access point supports broadcasting up to 16 SSIDs. There's a 2dBi gain internal omnidirectional antenna for 2.4 GHz and 5 dBi gain internal omnidirectional antennas for 5Ghz. The maximum transmit power for both integrated dual-band radios is 23 dBm and 22 dBm for the 802.11ac module.
The access point has a similar form factor as the Ubiquiti AP: a rounded-square panel, but is about an inch larger in height and length. Its depth is about double of the Ubiquiti AP. And with the 802.11ac module installed the access point is about 3.5 pounds; more than triple the weight of the Ubiquiti AP. On the front of the access point is a LED light to indicate the access point status. On the back you'll find the Mode button, a Gigabit Ethernet port, and a console Ethernet port. Plus there's a DC power jack, which is required to power the 802.11ac module if using 802.3af PoE instead of 802.3at PoE+.
The access point setup and configuration process was fairly straightforward, but could be complex for those without Cisco experience. The web-based interface of the controller is akin to other Cisco products. All the controller and access point settings are highly configurable and customizable. The Cisco AP performed anywhere from 4% to 22% better on our throughput tests than the Ubiquiti AP.
Ubiquiti UniFi AP AC
Ubiquiti provided its UniFi AP-AC ($299) and the free UniFi Controller Software. The access point has a 2.4GHz radio and 5GHz radio with three spatial streams, supporting up to four BSSIDs per radio. Both radios have integrated omnidirectional antennas with a maximum transmit power of 28 dBm.
Unlike Cisco and other traditional Wi-Fi solutions, Ubiquiti's UniFi system is designed to be managed using their virtual controller software. Once the controller software is installed on a non-dedicated PC, Mac, Linux computer, or in the cloud, the web-based controller interface can be accessed by any device.
The UniFi AP has a similar physical build as the Cisco AP: a rounded-square panel, but has about half the depth. It weighs just over a pound; much lighter than the Cisco AP. On the front of the access point is a unique LED status light outlining a square in the middle. On the back you'll find a reset button and two Gigabit Ethernet ports: a main and a secondary. There's no separate power input; it supports 802.3at Power-over-Ethernet+ (PoE+) and comes with an injector.
The access point setup and configuration process was simple and straightforward. Once you install the UniFi Controller Software on a computer you can access the web-based interface to run the setup wizard that helps you set an admin login and configure the access points with a secure SSID and optional guest SSID.
The admin interface is user-friendly and intuitive, even for those without enterprise-level network experience. Though it doesn't allow you to configure as many settings as other typical enterprise solutions, it does allow you to apply general wireless, network, and guest settings across multiple UniFi APs. It also allows you to place access points on an uploaded map and view statistics information on access point and client usage. Plus it offers various integrated guest/hotspot authentication capabilities.
For the performance part of the testing we used IxChariot to run throughput tests on both access points with two different clients:
Edimax AC1200 Wireless Dual-Band USB Adapter (two stream 802.11ac) plugged into a USB 2.0 port of a Windows 7 desktop PC. Be aware that USB 2.0 has a maximum data rate of 480Mbps, so if you're expecting to exceed that rate, you would need to go to USB 3.0.
ASUS AC1750 Dual-band Wireless PCI-E Adapter (three stream 802.11ac) connected inside the same Windows 7 desktop PC, using the provided antennas attached directly to the adapter rather than using their base extender.
On the access points, we enabled WPA2/AES security and 80 MHz channel-width support, and set the 5Ghz channel to 153. All wired connections between the access points, wireless controllers, and testing end-points were made via Gigabit Ethernet ports with newer CAT6 cables. And these connections were tested as well and confirmed to running near Gigabit speeds. During the testing, the distance between the access points and clients was about 25 feet with one wall and a closet partially blocking the line of sight (both made of drywall material).
We ran the tests with the IxChariot High_Performance_Throughput.scr script for one minute with each client individually in the 5GHz band. It simultaneously tested both the TCP uplink (client to access point) and downlink (access point to client), which we add to show the total simultaneous throughput. We ran each access point/client test three times and recorded the average and maximum throughput seen for each.
Cisco outperformed Ubiquiti in all tests. For the two-stream Edimax client the Cisco AP did about 6% better for average throughput and about 22% better on maximum throughput. For the three-stream ASUS client, the Cisco AP did again about 6% better for average throughput and about 4% better on maximum throughput. For all tests the results were surprisingly consistent.
Remember, wireless throughput tests can dramatically vary between different clients and test plans. Although we came up with fairly low throughput results compared to what the vendors and other testers said they've seen with 802.11ac, this test still serves as a valid comparison test as both access points were tested with the same test plan. Testing with different types or numbers of clients, different traffic types, and using a different test infrastructure and environment can produce much higher or lower results.
During our tests we found pros and cons of each access point. For instance, the Cisco AP performed better in the throughput tests and provides a feature-set and configuration process comparable to other enterprise-level access points. The Ubiquiti AP didn't perform quite as well and lacks much of the advanced enterprise settings, but is easier to setup, especially for those that lack true enterprise-level networking experience.
My recommendation if you're picking between these two access points would be to use Ubiquiti for small or midsized networks and Cisco for larger enterprise networks.
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