we got the original code from: http://csie.nqu.edu.tw/smallko/sdn/dijkstra_ryu.htm and fix some of its bug!
If you want to test the code, first you need to open a terminal bash and write:
sudo mn --topo tree,3 --mac --switch ovsk --controller remote -x && sudo mn -c
if you want to run on a custom topology the write:
sudo mn --custom ./customTopo.py --topo mytopo --mac --switch ovsk --controller remote -x && sudo mn -c
then goto the controller:c0 and write:
ryu-manager --verbose ryu/app/controller.py --observe-links
then you can write in mininet terminal:
pingall
if you want to check the flow table of a switch, for example for s2, then write the below command in switch:s2:
ovs-ofctl dump-flows s2
if you want to capture the packets of a certain host, for example for h1, then write the below command in host:h1:
tcpdump -en -i h1-eth0