Understanding 802.11ac and the option module
Figure 72 Understanding RF radio interfaces
Since 802.11ac is fairly new, having a dedicated module handling the VHT (Very High Throughput) requests makes it easy to see which clients are connected at 802.11ac rates and which 802.11ac clients are actually connecting at 802.11n rates. This is accomplished by observing the SLOT ID.
Figure 73 Understanding client associations
Troubleshooting the module (basics)
Common issues arise because:
•Module isn’t screwed down tightly
•Not enough PoE power (requires 802.3at) 18W
•Not configured correctly
•Not understanding the radios operate “together” so you need to configure the radio in slot 1 (5 GHz internal) first
Cisco Aironet Series 1600/2600/3600 Access Point Deployment Guide, Release 7.5
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