Follow these steps:
NOTE: For better understanding we have not used the sequence number for representing frames instead we have taken the running serial number i.e., 1,2,3,4,5,6....
1. Firstly, select the first five frames to be sent to the receiver, i.e., 1,2,3,4,5, and now wait to receive the acknowledgment of the 1st packet.
2. After ACK 1 received, select the next frame to be sent i.e., 6th and the window slides containing five frames, i.e., 2, 3, 4, 5, 6.
3. After ACK 2 received, select the next frame to be sent i.e., 7th and the window slides containing five frames, i.e., 3, 4, 5, 6, 7.
4. ACK 3 not received because the acknowledgment is lost, retransmit all the frames of the current window i.e., 3, 4, 5, 6, 7.
5. After ACK 3 received, select the next frame to be sent i.e., 8.
6. After ACK 4 received, select the next frame to be sent i.e., 9.
7. After ACK 5 received, select the next frame to be sent i.e., 10.
8. ACK 6 not received, retransmit all the frames of the current window i.e., 6, 7, 8, 9, 10.
9. Input the correct total number of frames transmitted and click the Submit button.
10. ACK received for all frames, ALL FRAMES SENT!