07-19-13 Expert Day

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Aruba Employee
srangasamy
Posts: 5
Registered: ‎09-28-2009

Too many APs are on the Same Channel

If many APs are selecting the same RF channel, there may be excessive interference on the other valid
802.11 channels. Issue the CLI commands show ap arm rf-summary ap-name <ap-name> or show ap
arm rf-summary ip-addr <ap ip address> and calculate the Interference index (intf_idx) for all the
valid channels.

 

An AP will only move to a new channel if the new channel has a lower interference index value than the
current channel. The ARM Free Channel Index parameter specifies the required difference between
two interference index values. If this value is set too high, the AP will not switch channels, even if the
interference is slightly lower on another channel. Lower the Free Channel Index to improve the
likelihood that the AP will switch to a better channel

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