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Hour 5

Hour 5. Subnetting. 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. Subnets in TCP/IP.

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Hour 5

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  1. Hour 5 Subnetting

  2. 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

  3. Subnets in TCP/IP

  4. 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. Converting a Subnet Mask to Dotted Decimal Notation 11111111111111111111111100000000 255.255.255.0

  6. 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.

  7. Figure 5.6, the network 129.100.0.0 is divided into four subnets

  8. Figure 5.7. A subnetted Class C network.

  9. 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

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