Hi, Thank you very much with that piece of advice because it helped solve the error. unfortunately, i seem to get another problem when i run the command ns test-80211.tcl.
$ ns test-80211.tcl invalid command name "NodeConstructor" while executing "NodeConstructor create _o12 " invoked from within "catch "$className create $o $args" msg" invoked from within "if [catch "$className create $o $args" msg] { if [string match "__FAILED_SHADOW_OBJECT_" $msg] { delete $o return "" } global errorInfo error "class $..." (procedure "new" line 3) invoked from within "new NodeConstructor" invoked from within "set nodeConstructor [new NodeConstructor]" (file "test-80211.tcl" line 6) Help of any sort is welcomed and hugely appreciated. Regards, Balkrishna S Gukhool