Basic HTML version of Foils prepared Dec. 6 98

Foil 42 SDLC and derivatives (3)

From Introduction to Network WANs Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
HDLC - High-level Data Link Control
  • SDLC modified by ISO
  • considered to be compatible with SDLC; the same frame format; does not support loop or hub go-around
  • supports full-duplex, synchronous operation
  • 3 transfer modes:
    • Normal Transfer Mode (used also by SDLC) - secondary cannot communicate with primary without permission
    • Asynchronous Response Mode (ARM) - can communicate
    • Asynchronous Balanced Mode (ABM) - combine node: primary or secondary

© Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Sun Dec 6 1998