HDLC Command/Response Repertoire
| Type Of Frame | Name | Command/ Response |
Description | Info | C-Field Format | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |||||
| Information(I) | C/R | User exchange data | N(R) | P/F | N(S) | 0 | ||||||
| Supervisory (S) | Receive Ready (RR) | C/R | Positive Acknowledgement | Ready to receive I-frame N(R) | N(R) | P/F | 0 | 0 | 0 | 1 | ||
| Receive Not Ready (RNR) | C/R | Positive Acknowledgement | Not ready to receive | N(R) | P/F | 0 | 1 | 0 | 1 | |||
| Reject (REJ) | C/R | Negative Acknowledgement | Retransmit starting with N(R) | N(R) | P/F | 1 | 0 | 0 | 1 | |||
| Selective Reject (SREJ) | C/R | Negative Acknowledgement | Retransmit only N(R) | N(R) | P/F | 1 | 1 | 0 | 1 | |||
Read more about this topic: High-Level Data Link Control
Famous quotes containing the words command, response and/or repertoire:
“I, who should command a regiment,
Do amble amiably here, O God,
One of the neat ones in your awkward squad.”
—Norman Cameron (b. 1905)
“Parents’ accepting attitudes can help children learn to be open and tolerant. Parents can explain unfamiliar behavior or physical handicaps and show children that the appropriate response to differences should be interest rather than revulsion.”
—Dian G. Smith (20th century)
“The best joke-tellers are those who have the patience to wait for conversation to come around to the point where the jokes in their repertoire have application.”
—Joseph Epstein (b. 1937)