Byte Stuffing in PPP (PDF)
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TU Dublin
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This document provides information about byte stuffing in PPP and how it deals with framing in computer networking. it describes different methods including character-oriented and bit-oriented protocols and discusses byte stuffing and unstuffing procedures.
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Synchronous Protocols Character-oriented protocols (or byte-oriented protocols) - the frame or packet is interpreted as a series of characters Bit-oriented protocols - the frame or packet is interpreted as a series of bits Figure 11.1 A frame in a character-oriented protocol 11.2 ...
Synchronous Protocols Character-oriented protocols (or byte-oriented protocols) - the frame or packet is interpreted as a series of characters Bit-oriented protocols - the frame or packet is interpreted as a series of bits Figure 11.1 A frame in a character-oriented protocol 11.2 Figure 11.2 Byte stuffing and unstuffing 11.3 Note Byte stuffing is the process of adding 1 extra byte whenever there is a flag or escape character in the text. 11.4 11.5 11.6 Byte stuffing (in general) 5E if PPP 5D if PPP 5D 5E 5D 5D (a) Typical data link frame Escape = 7D (b) Byte stuffing of the data 11.7 Figure 11.3 A frame in a bit-oriented protocol Revise – Bit stuffing 11.8
