Basic VLSM Packet Tracer Activity


Understanding and being able to configure VLSM is essential part of today’s network engineers duties as well as an important part of the CCNA exam.  In this Free CCNA Lab we will use Cisco’s Packet Tracer to model a small network that will demonstrate how to design and configure VLSM to subnet a single network address space to provide 3 separate networks.  

VLSM allows a network to use more than one subnet mask within the same network address space. Implementing VLSM is often referred to as “subnetting “, and can be used to maximize addressing efficiency

VLSM occurs when more than one mask is used in a single Class A, B, or C network. Although route summarization causes more than one mask to be used, requiring support for VLSM, you can also simply design a network to use multiple subnet masks. By using VLSM, you can reduce the number of wasted IP addresses in each subnet, allow for more subnets, and avoid having to obtain another registered IP network number from the NIC.

  Basic VLSM (55.1 KiB, 1,997 hits)

  Packet Tracer 5-3-3 By Cisco (48.3 MiB, 1,782 hits)
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