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Mininet : exception caught error SOLVED!

What to do when an exception caught error pops up in mininet?

1. If mininet crashes for some reason, the application runs a clean up once being run again.

2. If that does not work, we can run clean up manually using
Command:



The result is as follows:




3. Other ways are such as that using the process kill commands to kill the process running on that port.

Here controller runs on the port : 6653





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