[pox-dev] Determine packets coming from which switch

[Murphy McCauley]

On Jul 2, 2013, at 7:25 AM, nibble nibble wrote:

> I have a l2.learningSwitch and a network with a few switches. For every packet I receive I want to determine packet was received from which one of the switches. For this I used packet_in.in_port . But its does not seem that it indicate switch, because when I have two switches I received packets from port 1,2 and 3.

Right.  It's indicating which port on the switch the packet was received on.  Not which switch.

> Now my question is how to determine packet coming from switch x??

The PacketIn event has a .dpid attribute that holds the datapath ID of the switch.

-- Murphy