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Ipv4 and Ipv6 Overview

Ipv4 and Ipv6 Overview. Overview. System of addresses used to identify devices on a network. Hey, who are you?. Oh, Word. 144.92.43.178. Overview. Internet Protocol is in the Network layer of the OSI model In the Network layer, data is organized into packets, or datagrams

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Ipv4 and Ipv6 Overview

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  1. Ipv4 and Ipv6 Overview

  2. Overview System of addresses used to identify devices on a network. Hey, who are you? Oh, Word. 144.92.43.178

  3. Overview Internet Protocol is in the Network layer of the OSI model In the Network layer, data is organized into packets, or datagrams The datagram is the envelope for data and helps it travel through the channels

  4. Overview Notice the differences? What does the IPv4 datagram look like? What does the Ipv6 datagram look like?

  5. Internet Protocol version 4 IPv4 • Each address has a unique 32 bit number • Divided into 4 octects • Each octect is 8 bits • Each octect is separated by periods. • The Network Class can be determined by the first octect • Class A, Class B, Class C

  6. Table 4-1 Commonly used TCP/IP classes IPv4 Classes Class D and E do exist. But are reserved for multicasting and experimental use. You should never assign Class D or E addresses

  7. Ipv4 Addressing • Eight bits have 256 combinations • Networks use 1 through 254 • 0: reserved as placeholder • 10.0.0.0 • 255: reserved for broadcast transmission • 255.255.255.255

  8. IPv4 Subnet Masks

  9. Ipv4 Subnet Mask Special 32 bit number Combines with IP address to inform the rest of the network about the segment or network the device is attached to. The default subnet masks are separated into classes.

  10. Table 4-2 Default subnet masks Subnet Mask Classes

  11. Assigning IPv4 Addresses The modern method of assigning IP addresses is through Dynamic Host Configuration Protocol, or DHCP With DHCP, a device leases an IP address while it is attached to the network Device receives address when it connects to network and uses it for duration of lease.

  12. DHCP Hey this is Client A, what IP address can I use? Sweet! I’ll take 123.45.67.89 What’s up Client A? This is DHCP server. I can hook you up with 123.45.67.89. Word. Client A is now assigned 123.45.67.89 and no other devices can use it.

  13. IPv6 • IPv6 is also know as IP next generation (Ipng). • Supported by most applications, servers and devices. • Offers billions and billions of additional IP addresses through new addressing scheme.

  14. Differences Between IPv6 & IPv4 Addresses • Size • IPv4:32 bits • IPv6: eight 16 bit fields(128 bits) • increase in size of 2^96 (4 billion x 4 billion x 4 billion) • Representation • IPv4: binary number (for example,123.45.67.89) • IPv6: hexadecimal numbers (for example, 0:0:0:0:0:0:0:1 or ::1)

  15. Differences Between IPv6 &IPv4 Addresses • Scope • IPv6 addresses can reflect scope of transmission’s recipients. • Unicast, Multicast, and Anycast. • Format • IPv6 indicate what type of address it is • Example: • Unicast begins with hexadecimal string: FECO or FF80. • Multicast begins with hexadecimal string: FFOx, where x represents the group scope ID.

  16. Advantages of IPv6 • Efficient Header. • Better security. • Better prioritization provision. • Automatic IP address configuration. • Billions of additional IP addresses.

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