mininet

OSError: Path does not exist or is not directory: '/usr/lib/python3/dist-packages/ryu/app/gui_topology/html/' Question: I was trying to open RYU topology viewer. I created a tree topology using these commands: user@ubuntu:~$ sudo mn –topo tree,3 –controller remote [sudo] password for user: *** Creating network *** Adding controller Unable to contact the remote controller at 127.0.0.1:6653 Unable to contact …

NameError: name '_name_' is not defined Question: I have gone through the similar question in stackoverflow but couldn’t find the answer close to my problem. In the code below the 3 line before the last line is giving Error – NameError: name ‘_name_’ is not defined I have copied the below code from the University …