Hour 5 Subnetting 1

you will be able to Explain how subnets and supernets are used Explain the benefits of subnetting Develop a subnet mask that meets business needs Describe supernetting and CIDR notation 2

Subnets in TCP/IP 3

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To borrow some of the bits from the host ID to designate a subnet address. Subnet uses a 1 in the part of the network ID or subnet ID. And uses a 0 in the IP address that is part of the host ID. 5

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Converting a Subnet Mask to Dotted Decimal Notation

Working with Subnets The subnet mask defined how many bits will be used for the subnet ID. The best solution is to plan your network first and determine the number and location of all network segments, then assign each segment a subnet ID. 9

Figure 5.6, the network is divided into four subnets 10

Figure 5.7. A subnetted Class C network. 11

Classless Internet Domain Routing Classless Internet Domain Routing (CIDR) is a technique that allows a block of network IDs to be treated as a single entity in routing tables. called a supernet mask. the supernet mask in effect takes bits away from the network ID 12