Hi cowper
What version of software you are using?
As I can see you missed some parameters. You can see all needed parameters in my example below
example:
ePMP1000_c6f915>config set cambiumDeviceAgentEnable 1
ePMP1000_c02071>config set cambiumDeviceAgentCNSURL <your URL>
ePMP1000_c02071>config set cambiumCNSDeviceAgentID mykola
ePMP1000_c02071>config set cambiumCNSDeviceAgentPassword 12345678
ePMP1000_c02071>config save
ePMP1000_c02071>config apply
Thank you.