Cisco IW3702 Getting Started Manual page 37

Cisco IW3702 Access Point Getting Started Guide
Configuration
Notes: 
The access point downgrades to 3x3 when connected to a 15.4W power supply. For maximum
operating efficiency, use an IEEE 802.3at compliant PoE switch or AIR-PWRINJ1500-2= power
injector.

To prevent Ethernet port bottlenecks due to wireless traffic speeds exceeding 10/100 Ethernet port
transmit speeds, the Cisco IW3702 access point requires a Gigabit Ethernet link.
As the access point attempts to connect to the controller, the LEDs cycle through a green-red-amber sequence,
which can take up to 5 minutes.
Notes: 
If this connection takes longer than five minutes, the access point cannot find the master Cisco
Wireless LAN Controller. Check the connection, and ensure that both are on the same subnet.

To prevent Ethernet port bottlenecks due to wireless traffic speeds exceeding 10/100 Ethernet port
transmit speeds, the Cisco IW3702 access point requires a Gigabit Ethernet link.

If the access point shuts down, check the power source.
After a successful connection, the access point compares operating system code versions with the Cisco Wireless
LAN Controller. If versions differ, it downloads the newest version. The Status LED blinks dark blue during this
process. On a successful download, the access point reboots.
3. (Optional) Configure the access point.
Use the controller CLI, controller GUI, or Cisco Prime Infrastructure to customize access-point-specific
IEEE 802.11ac network settings.
On successful access point priming, the Status LED is green indicating normal operation.
4. Disconnect the access point and mount it in location.
Notes: 
If the access point LEDs do not indicate normal operation, turn it off and repeat the access point
priming procedure (see

When installing a Layer 3 access point on a different subnet than the Cisco Wireless LAN Controller,
ensure that:
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Using DHCP Option 43
You can use DHCP Option 43 to provide a list of controller IP addresses to the access points, enabling them to find and
join a controller. For additional information, refer to
Performing a Pre-Installation Configuration, page
a DHCP server is reachable from the subnet on which you are installing the access point and that
subnet has a return route to the Cisco Wireless LAN Controller.
the return route to the Cisco Wireless LAN Controller has destination UDP ports 5246 and 5247
open for CAPWAP communications.
the return route to the primary, secondary, and tertiary Cisco Wireless LAN Controllers allows IP
packet fragments.
if using address translation, the access point and the Cisco Wireless LAN Controller have a static
1-to-1 NAT to an outside address. (Port address translation is not supported.)
Configuring DHCP Option 43 and DHCP Option 60, page
37
35).
38.