Go-Back-N Protocol Week
1. In the Go-Back-N Protocol, the sequence numbers are modulo 2m, where m is the size of the sequ
number field in bits. Sequence Nos in the range (0 to 2m-1). e.g. for m=3, seq nos: 0 to 7
2. In the Go-Back-N protocol, the acknowledgment number is cumulative and defines the sequence nu
the next packet expected to arrive
3. The send window is an abstract concept defining an imaginary box of maximum size (Ssize) = 2m −
three variables: Sf, Sn, and Ssize.
4. The send window can slide one or more slots when an error-free ACK with ackNo between Sf and
modular arithmetic) arrives.
1. In the Go-Back-N Protocol, the sequence numbers are modulo 2m, where m is the size of the sequ
number field in bits. Sequence Nos in the range (0 to 2m-1). e.g. for m=3, seq nos: 0 to 7
2. In the Go-Back-N protocol, the acknowledgment number is cumulative and defines the sequence nu
the next packet expected to arrive
3. The send window is an abstract concept defining an imaginary box of maximum size (Ssize) = 2m −
three variables: Sf, Sn, and Ssize.
4. The send window can slide one or more slots when an error-free ACK with ackNo between Sf and
modular arithmetic) arrives.
