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:
“There are confessable agonies, sufferings of which one can positively be proud. Of bereavement, of parting, of the sense of sin and the fear of death the poets have eloquently spoken. They command the world’s sympathy. But there are also discreditable anguishes, no less excruciating than the others, but of which the sufferer dare not, cannot speak. The anguish of thwarted desire, for example.”
—Aldous Huxley (1894–1963)
“The reason can give nothing at all Like the response to desire.”
—Wallace Stevens (1879–1955)
“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)