On Wed, 16 Feb 2000, Jun Ke wrote: > I found my previous question had something to do with "trace_all" > method. If I ran "trace_all" after "create_topology", there was no > error message, however, I could not get any trace information. That's because the trace-all method in ns is spelt with a minus sign, not an underline. L. <[email protected]>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>