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