Cisco CCNA Subnetting Tutorials

This page contains free information and video tutorials on subnetting.

Definition:
A subnetwork, or subnet, describes networked computers and devices that have a common, designated IP address routing prefix.

Subnetting is used to break the network into smaller more efficient subnets to prevent excessive rates of Ethernet packet collision in a large network. Such subnets can be arranged hierarchically, with the organization’s network address space partitioned into a tree-like structure. Routers are used to manage traffic and constitute borders between subnets.

here are some free video tutorials on CCNA Subnetting:

CCNA Router Summarization: Speed Your Network

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CCNA Router Summarization: Speed Your Network

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for full version visit www.nhanced.co.uk . In large internetworks thousands of network addresses can exist. It is often problematic for routers to maintain this volume of routes in their routing tables. By learning Route summarization you can reduce the number of routes to ensure your network runs faster

FREE Subnet Question Generator

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Finally - a tool to help you test your subnetting skills

Subnetting in 6 easy steps - part 2.flv

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ccna

A typical subnet is a physical network served by one router, for instance an Ethernet network (consisting of one or several Ethernet segments or local area networks, interconnected by network switches and network bridges) or a Virtual Local Area Network (VLAN). However, subnetting allows the network to be logically divided regardless of the physical layout of a network, since it is possible to divide a physical network into several subnets by configuring different host computers to use different routers.