Hi All, I have been using the https://github.com/CPqD/ofsoftswitch13/wiki/OpenFlow-1.3-Tutorial for my research.
Used mininet to create a linear topolgy with 2 switches on one Ubuntu 12.04 running box. (sudo mn -x --mac --topo linear,2 --switch user --controller=remote,ip=ip address ,port=6633 ) Nox controller was running in another ubuntu box with module 'switch'. ( ./nox_core -v -v -i ptcp:6633 switch ) Issue ===== I could observe all the handshake messages happening properly in wireshark. Thinks works fine. But when I try to simulate a port state change by taking a Port down as shown in mininet documentation-- "link h1 s1 down", am not not able to see any port status message send from switch to controller. I tried bringing down the interface using "ifconfig XX down". In both these cases, on pinging, I understand that the port is really down. Even then I do not receive a port status message. Can some one help me out ??? Thanks, Anoop.
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