I am sure this must be an easy one to answer....
Is there a way of making another port, other than fxp0, the management interface for external access so I can test jflow?
In general fxp0 is only used for management access.
To use Jflow you can use any of the ge/xe interface.
Okay. Cool. I know the fxp is the management but jflow won't work through that interface.
It's all good. I've configuerd a routable address onto a GE interfaces and tested and it works great. Cheers.