Hi, I tried to run "ns test-suite-full.tcl droppedfastrexmit" but failed, and the error messages were as follows: tclsh: not found tclsh: not found tclsh: not found tclsh: not found ~/ns-allinone-2.1b4a/ns-2/tcl/test $ Problems found with input data. Problems found with input data. What would be the problem? Any solution? Thanks. -- Tsungli Wu E-mail:[email protected]