[ns] monitor the buffer using xgraph

[Huike LI <huike@ee.mu.oz.au>]

Greeting all,

Sorry for my ignorance, as a beginer to NS, I have some junior questions,
thanks for  your patience.

1, where can I get some example source(TCL script) of using xgraph, the
samples uder ex and test are more likely to use nam.

2, I had read the tutorial about how to use xgraph, but if the sink is not
a LossMonitor, but e.g. TCPSink, how can I get the parameters of the
sink, such as the bytes received, etc.?

Thanks a lot,
Victor