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Chapter 7 - Variable Length Subnet Masking (VLSM)

Cisco & IP Addressing
Louis D. Rossi, Louis R. Rossi and Thomas Rossi
  Copyright © 1999 The McGraw-Hill Companies, Inc.

Summary
  VLSM is an addressing process whereby we can use a different subnet mask for the same major network address.
  The major advantage of VLSM is that it helps preserve addressing space.
  VLSM can only be used with a classless routing protocol.

 


 
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