Hi Group,

      I have a following doubt regarding SCTP TSN/SSN Handling.

    SCTP                                                                                                                SCTP

(Peer Node)                                                                                                       (Local Node)

                     Association is established with Local Init TSN = 0

                  ß---------------------------------------------------------------------------------------------à

                                          DATA1

                  -------------------------------------------------------------------------------------------------à    

                        TSN(0)     SSN(0)   StreamId = 0

                                          DATA2

                  -------------------------------------------------------------------------------------------------à    

                        TSN(2)     SSN(1)   StreamId = 0

                                          DATA3

                  -------------------------------------------------------------------------------------------------à    

                        TSN(1)     SSN(2)   StreamId = 0

                                          DATA4

                  -------------------------------------------------------------------------------------------------à    

                        TSN(2)     SSN(3)   StreamId = 0

                                          DATA5

                  -------------------------------------------------------------------------------------------------à    

                        TSN(3)     SSN(3)   StreamId = 0

            What should be the behavior when we receive DATA4 and DATA5 since the SSN is in sequence but the TSN is out-of-order?

     Request you to please clarify my doubt.

Thanks and Regards,

Nagesh.

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