I am new in mininet and I want to know while I create spin leaf DataCenter topology and visualiz the topology using RYU controller the ping is not working. The Topology:
____[S1]
[L1], [L2], [L3]------|
|----[S2]
3 hosts are attached to each Leaf switch, and each leaf is connected to both Spine Switches. The hosts doesn't ping on each other.