No ping between hosts in mininet when ran mininet

1
votes

I have install mininet and then have run it but there are no ping between hosts.

ali@ubuntu:~$ sudo mn

No default OpenFlow controller found for default switch!

Falling back to OVS Bridge

Creating network

Adding controller

Adding hosts:
h1 h2 

Adding switches:
s1 

Adding links:
(h1, s1) (h2, s1) 

Configuring hosts
h1 h2 

Starting controller


Starting 1 switches
s1 ...

Starting CLI:

mininet> pingall

Ping: testing ping reachability

h1 -> X 

h2 -> X 

Results: 100% dropped (0/2 received)
1
mininet

1 Answers

0
votes

"No default OpenFlow controller found for default switch!"

There is no ping between hosts because there is no controller to your network. You need a Controller even to guide switches to "act_like_switch" or "act_like_hub". Else switches will not forward packets.

The problem is that you installed mininet but mininet doesn't find default controller for some reason.

  • Try to run other controllers or remote like this
  • Execute again mininet/util/install.sh
  • Try to deactivate sudo service openvswitch-controller stop sudo update-rc.d openvswitch-controller disable and reconfigure : sudo dpkg-reconfigure openvswitch-datapath-dkms sudo service openflow-switch restart
  • Reinstall mininet if nothing works and follow all the steps