hello all, I am simulating TORA protocol in ns2.35 following errors are occured, (_o17 cmd line 1) invoked from within "_o17 cmd port-dmux _o28" invoked from within "catch "$self cmd $args" ret" invoked from within "if [catch "$self cmd $args" ret] { set cls [$self info class] global errorInfo set savedInfo $errorInfo error "error when calling class $cls: $args" $..." (procedure "_o17" line 2) (SplitObject unknown line 2) invoked from within "$agent port-dmux $dmux_" (procedure "_o14" line 11) (Node/MobileNode add-target-rtagent line 11) invoked from within "$self add-target-rtagent $agent $port" (procedure "_o14" line 28) (Node/MobileNode add-target line 28) invoked from within "$self add-target $agent $port" (procedure "_o14" line 15) (Node attach line 15) invoked from within "$node attach $ragent [Node set rtagent_port_]" (procedure "_o3" line 85) (Simulator create-wireless-node line 85) invoked from within "_o3 create-wireless-node" ("eval" body line 1) invoked from within "eval $self create-wireless-node $args" (procedure "_o3" line 23) (Simulator node line 23) invoked from within "$ns node" ("for" body line 2) invoked from within "for {set i 0} {$i < $val(nn) } { incr i } { set node_($i) [$ns node] }" (file "wrls-tora1.tcl" line 54)
How should I resolve it.