What is channel bonding and how do I enable or disable channel bonding on Aruba Central?

Aruba Employee
Aruba Employee
Environment This article applies to Aruba Instant™ Access Points running Aruba InstantOS or higher and managed by Aruba Central.



The amount of data that can be transmitted depends on the width of the channel used in data transmission. By bonding or combining two or more channels together, more bandwidth is available for data transmission. In 2.4 and 5 GHz frequency band, each channel is approximately 20 MHz wide. In 802.11n, two adjacent channels, each of 20 MHz are bonded to get a total bandwidth of 40 MHz. This provides increased channel width to transmit more data.

But the trade-off of using channel bonding is that fewer channels remain for other devices. In traditional 2.4 GHz Wi-Fi deployments. where there are only three non-overlapping 20MHz channels, channel bonding has been found to be harmful. However, the channel bonding has more relevance in 5 GHz frequency range where there are many as 23 adjacent non-overlapping channels currently available.  


By Default channel bonding is enabled in 5 GHz Band. If the AP density is low you can enable it in the 2.4GHz band too and disable it altogether when there are legacy clients in the network that don't support Channel bonding 


Configuring Wide Channel Bands on an IAP managed by Aruba Central.

1.  Login to Aruba Central Dashboard
2.  Navigate to Configuration>RF>ARM and select WIDE CHANNEL BANDS
3.  Choose between None, All, 2.4 GHz and 5 GHz



4.   Click Save to save the settings

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Last update:
‎06-18-2014 02:23 PM
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