August 2000
Intermediate to advanced
528 pages
12h 44m
English
Content preview from Internet Routing Architectures, Second Edition
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Frequently Asked Questions
Q— How is VLSM different from subnetting?
A— It is not. VLSM is an extension of basic subnetting whereby the same Class A, B, or C address is subnetted by using masks of different lengths.
Q— Why do I need VLSM?
A— VLSM provides a more efficient way to assign IP addresses. It provides more flexibility in assigning adequate numbers of hosts and subnets given a limited number of IP addresses.
Q— What is the difference between CIDR and supernetting?
A— Classless inter-domain routing is the mechanism that allows networks to advertise both supernets and subnets outside the normal bounds of a classful network number. Supernetting is a representation that allows masks that are shorter than the natural masks, hence creating ...
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