streaming debugging

[vl_]

Hello,
Are there any logging / tracing I can use with vlc if I have problems with streaming?
I am using vlc 0.8.6 on Ubuntu...

Also, documentation give me the following command line options for streaming:
vlc -vvv input_stream --sout '#rtp{dst=192.168.0.12,port=1234,sdp=rtsp://server.example.org:8080/test.sdp}'
on the client(s), run:
% vlc rtsp://server.example.org:8080/test.sdp

What is 'test.sdp'? What would be the simple command line for client to open network stream?

Thanks,
-v