You'll need to:
Add SNMP community string in your Airwave server.
It's been a long time since I had to do that, so rather than give you incorrect information, I'm going to recommend you check out the Airwave User Guide, under the Documention tab of Airwave Home.
Then add the SNMP information to point your controllers to the Airwave server:
commands to add on controller:
conf t
snmp-server community "SNMP_STRING"
snmp-server host "airwave_server_IP" version 2c "SNMP_STRING" udp-port 162
exit
You can also add via the GUI:
Configuration
SNMP (under Management)
*** probably not best to use SNMP version 2c - I believe there are some security concerns and SNMPv3 is probably the way to go. ***