How to set bandwidth on Mininet custom topology?

You should add cls=TCLink on the self.addLink(h1,s1,bw=10)

so the code will be self.addLink(h1,s1,cls=TCLink,bw=10)

Add to the other addLink to make it work

When starting Mininet, add an additional argument --link=tc

You should use --link argument. For example: sudo mn --topo tree,depth=2,fanout=5 --controller=remote,ip=10.0.0.1,port=6633 --switch ovsk,protocols=OpenFlow13, --link tc,bw=1,delay=10ms

I'll update with an example soon.