I am trying to do multipath routing using per packet in openflow. I do not know how are multipaths used to deliver data on per packet basis. Is flow table updated everytime or group table does per packet delivery?
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Each flow entry may have an idle timeout and or a hard timeout associated with it. The idle timeout and a hard timeout control the removal of a flow entry from the OpenFlow table. If either value is non-zero, the switch must note the flow entry's arrival time, as it may need to evict the entry later. A non-zero idle_timeout entry field causes the flow entry to be removed after the given number of seconds, if no packet has been matched by the flow. A non-zero hard_timeout field causes the flow entry to be removed after the given number of seconds, regardless of how many packets it has matched.
Hard timeout: The absolute timeout after which the flow is removed from the device.
Idle timeout: The absolute timeout in which if there are no packets hitting the flow for the duration, then flow is removed from the device.
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