Stop and Wait protocol Algorithm at sender(node a) (with initial condition SNEO 1) Accept packet from higher layer when available assign number sn to it 2) Transmit packet sn 3 Wait for an error free packet from B if received and it contains rn>sn in the request# field, set sn to rn and go to 1 li. if not received within given time(to), go to 2Stop and Wait Protocol Algorithm at sender (node A) (with initial condition SN=0) 1) Accept packet from higher layer when available; assign number SN to it 2) Transmit packet SN 3) Wait for an error free packet from B i. if received and it contains RN>SN in the request # field, set SN to RN and go to 1 ii. if not received within given time (TO), go to 2