Collect and analyse BGP traffic

bloomingdals

Hello every one,
I want to collect BGP tarfic and analyse it in order to store it in a data base et use it later for other goals.
I have a juniper router (MX5 to be more specific). I want to configure sflow on it but apparently sflow is not supported by the MX plateform.
Is it ok if i configure inline-jflow instead?
what collector can i use knowing that my machine is ubuntu 12.04? i thought of NFDUMP but i don't know if it supportes jflow?
Other question, all the configurations i found on juniper websites are general, they don't use BGP which is a problem because i want to monitor traffic between bgp peers and also trafic specific to each route in the routing table.

I hope that you can guide me and thank you for your time