Hi!

  I have doubt in sending the GAP ACK blocks in SACK.

 

            Let X = Maximum value of 4 bytes value.

            That is X = (2**32 - 1).

 

            If SYSTEM_1 sends DATA chunks with the following TSN values in sequence,

            TSN = X - 3      

            TSN = X - 2

            TSN = X - 1

            TSN = X

            TSN = 0 (after wrapping)

            TSN = 1

            TSN = 2

            TSN = 3

            to the SYSTEM_2.

 

            Let the DATA chunk with the TSN value “X -1“is lost and “0“is lost.

All other DATA chunks reach the SYSTEM_2.

Then SYSTEM_2 should send the SACK with Cumulative TSN = “X -2” and other DATA chunks TSN should be ACKed by GAP ACK blocks (In offset values).

 

What are the values that should be in GAP ACK blocks?

 

Thanx in advance,

S.Gobinath.