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1 IP Addressing. 2 What Is an IP Address? 133.120.75.8 86 131.107.0.0 131.107.3.27 133.120.0.0 129.102.12.7 129.102.0.0 129.102.16. 2 90 94 MARIA AVE.

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Presentation on theme: "1 IP Addressing. 2 What Is an IP Address? 133.120.75.8 86 131.107.0.0 131.107.3.27 133.120.0.0 129.102.12.7 129.102.0.0 129.102.16. 2 90 94 MARIA AVE."— Presentation transcript:

1 1 IP Addressing

2 2 What Is an IP Address? MARIA AVE

3 3 Network ID and Host ID Network IDHost ID 32 Bits w. x. y. z Example: Class B

4 4 Converting IP Addresses from Binary to Decimal Bits 255 Decimal Value

5 5 Address Classes Class C wxyz Class A Network ID Host ID 0 Class B Network IDHost ID 1 0 Network IDHost ID 1 1 0

6 6 Address Class Summary Number of Networks Number ,384 2,097,152 Number of Hosts per Network Number of Hosts per Network 16,777,214 65, Class A Class B Class C Range of Network IDs (First Octet) Range of Network IDs (First Octet) 1 – – – 223

7 7 Addressing Guidelines Network ID Cannot Be is reserved for lookback functions Network ID and Host ID Cannot Be 255 (All Bits Set to 1) 255 is a broadcast address Network ID and Host ID Cannot Be 0 (All Bits Set to 0) 0 means “this network only” Host ID Must Be Unique to the Network

8 8 Assigning Network IDs Router x.y.z z y.z Router

9 9 Assigning Host IDs Router x.y.z z z

10 10 What Is a Subnet Mask? Distinguishes the Network ID from the Host ID Used to Specify Whether the Destination Host is Local or Remote

11 11 Default Subnet Masks (No Subnetting) Bits Used for Subnet Mask AddressClass Dotted Decimal Notation Notation Class A Class B Class C Class A Class B Class C Class B Example w.x. IP Address Subnet Mask Network ID Host ID y.z

12 12 Determining the Destination of a Packet IP Address Subnet Mask IP Address Subnet Mask Result Local and Destination Host’s Subnet Masks Are ANDed 1 AND 1 = 1 Other combinations = 0 If ANDed results of source and destination hosts match, the destination is local.

13 13 IP Addressing with IP Version 6 Expanded Addressing Capabilities Simplified Header Format Support for Time-Dependent Options Support of IP Header Extensions for Future Technologies

14 14 Review What Is an IP Address? Address Classes Addressing Guidelines What is Subnet Mask? IP Addressing with IP Version 6


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