Post #12, @KiranByahatti : Welcome to LQ.
First : ns2 default cannot use tcl8.6 . ( ns-allinone-2.35 has tcl8.5 ).
Which command has been used to produce the output in your question ?
( I.e. an error output with no command tells very little.)
Info : The 2014 .. 2017 update is `ns-allinone-2.35_gcc5.tar.gz“
https://drive.google.com/file/d/0B7S...ew?usp=sharing
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