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Cisco Aironet 1500 Series Outdoor Mesh Access Point Hardware Installation Guide
OL-9977-05
Chapter 3 Troubleshooting
Using DHCP Option 43
Using DHCP Option 43
You can use DHCP Option 43 to provide a list of controller IP addresses to the access points, enabling
the access point to find and join a controller. Refer to the product documentation for your DHCP server
for instructions on configuring DHCP Option 43. For additional information, refer to the
“Configuring
DHCP Option 43” section on page G-1
.
Misconfigured Bridge Shared Secret Key
If an access point has a misconfigured bridge shared secret key, it is not allowed to join the mesh
network. If Enable Zero Touch Configuration is checked on your controller, the access point can
obtain the shared secret key from the controller or a neighbor access point.
If Enable Zero Touch Configuration is not checked, you might need to check the feature to allow the
access point to get a new bridge shared secret key (refer to the
“Enabling Zero Touch Configuration on
the Controller” section on page 2-10
).
Misconfigured MESH Access Point IP address
IP address misconfiguration can occur when you are re-addressing a segment of your mesh network and
your first IP address change is the IP addresses of the RAP connected to the wired network. To avoid this
problem, always start the IP addressing changes from the farthest access point and work your way back
to the RAP. This problem might also happen if you move equipment; for example, you uninstall an access
point and redeploy it in another physical location on the mesh network with a different IP subnet.
Another option to fix this misconfigured IP address is to physically take a controller in L2 mode with a
RAP to the location of the misconfigured MAP. Set the bridge group name for the RAP to match the
misconfigured MAP. Add the MAP’s MAC address to the controller’s filter list and check Enable Zero
Tough Configuration. When the misconfigured MAP displays on the controller’s Summary page, you
can properly configure the access point.
