Hi, Khubaib

Ryu does not delete flows when the connection established.
It should be caused by OVS or your application,
so please check your application or ask OVS community.

Thanks,
Fujimoto

On 2017年04月19日 21:20, Khubaib wrote:
I configured my OVS in failure-secure mode with some flow tables/entries in place. Upon connecting to the controller all flows are removed.

OpenFlow 1.5 specifications state:

"When the OpenFlow channel is reestablished, the flow entries present in the flow tables at that time are preserved and normal OpenFlow operation resumes. If desired, the controller has then the option of reading all flow entries with a flow-stats request (see 7.3.5.2), to re-synchronise its state with the switch state. Alternatively, the controller then has the option of deleting all flow entries with a flow-mod request (see 6.4), to start from a clean state on the switch."

So I'm assuming Ryu is deleting them upon INITIAL contact. Is that an immutable feature?


— Khubaib


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