Environment : This article applies to all Aruba Instant Access Points running Aruba InstantOS 6.2.1.0-3.3.0.0 or higher.
Spectrum Load Balnalcing (SLB) feature helps optimize network resources by balancing client load across channels and by dividing APs in a cluster into several logical AP RF neighborhood domains.
For SLB to function in a instant cluster, the Adaptive Radio Management (ARM) must be enabled as its load balancing forces the client to a ‘better’ channel using standard association response frames thereby seeking to equalize the number of clients on each available channel.
Note: Also note that SLB feature is in action only when a client first connects onto the network. There is no dynamic load-balancing once the client is already associated to an AP.
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By default Spectrum Load Balancing is enabled on IAP. However, follow below steps to enable:
From GUI:
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Login to web interface of IAP
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In the top-right menu, clicn on "RF"
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From the dropdown, select "Enabled" for Spectrum Load Balancing
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For further configuration parameters related to SLB, click on "Show Advance Options"
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Here, SLB calculating interval, SLB neighbor matching % and SLB Threshold can be configured.
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Once finish, click OK.
Below is the screenshot from GUI:
Below commands would help to verify if the SLB is enabled on the Instant AP:
# show arm config# show running-config
(If SLB is enabled then the ARM section of running-config should show the entry for "spectrum-load-balancing")# show ap debug spectrum-load-balancing x(Where, x stands for radio: 0 or 1. 0 is for 5.GHz and 1 is for 2.4GHz)
This command is radio specific and shows if the SLB is enabled and active on a particular radio.
IAP# show ap debug spectrum-load-balancing 0
Spectrum Load Balancing Status: RUNNING, Associated:1, Threshold:5
Spectrum Load Balancing Neighbor Table
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MAC Channel Client_Count Flags Recved_Seconds
--- ------- ------------ ----- --------------
00:24:6c:07:b2:60 48 0 VR 85
00:24:6c:24:24:50 165 3 VR 136
00:24:6c:33:06:00 165 9 V 281
00:24:6c:24:17:60 161 0 2180
00:24:6c:07:7e:80 36 0 S 296
Neighbor Flags: V - Valid; R - Is in Virtual RF Neighborhood; S - Same Channel