Hi
I wonder that when a new flow is arriving at the OpenFlow switch, the
first packet will be forwarded to the controller, then whether the following
packets will be forwarded to the controller or buffered in the switch before
the flow entry is installed in the switch.
Recently I read a paper about nox and an sentence said "For TCP traffic
only the first packet header of a new flow is sent to the controller, while for
UDP all packets are relayed until a flow rule is in place". TCP flow needs to
receive SYN ack so there is only one packet arriving at the switch, but UDP
flow has persistent packets.
Previously I thought that the packets will be buffered. Is that right?
