How to avoid STP loop on RAP deployment wired ports IAP 4.0
Hotel customers who deploy RAP3 in hotel rooms want to allow their guests to use both the eth1 and eth2 ports on the AP, but are worried that a guest could accidentally connect the ports together, causing a loop that could bring down their wired network.
Feature Notes :
This feature is only supported by IAP with more than three Ethernet ports--RAP3 and RAP155.
IAPv4.0 enabled the AOS feature STP for IAP to detect and avoid loops
Environment : Typically scenario of rap deployment in customer hotel rooms. This will be the common scenario of connecting two ports together by mistake causing loop on the wired ports on the RAP itself. This guide and configuration of enabling STP on IAP will help us to detect and avoid loop.
Configuration Steps :
Go to wired setting -->Select Spanning tree and make sure it is enabled.
Answer : From below, we could notice from show port status the stp-status shows forwarding state.
Troubleshooting : From CLI, when we run show ap debug spanning tree will help us to troubleshoot and understand for bridge priortity/port status/cost and state details as shown below.
IAP uplink packet-captures also will also help to understand the STP traffic.