IPv6 Network Addresses

In this chapter you will learn: Understand the shortcomings of IPv4; know the IPv6 address format, address types, and abbreviations; be familiar with the IPv6 header format; know the extension header types; know the differences between ICMPv4 and ICMPv6; know the strategies for transitioning from IPv4 to IPv6.

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The following will be discussed in this chapter: Configure DHCP in an enterprise branch network, Configure NAT on a Cisco router, Configure new generation RIP (RIPng) to use IPv6. Every device that connects to a network needs an IP address. Network administrators assign static IP addresses to routers, servers, and other network devices whose locations (physical and logical) are not likely to change.

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Students will be able to: Describe IPv6, describe the basics of IPv6 addressing, describe and configure IPv6 addresses, describe and configure IPv6 routing, describe and configure IPv6 tunneling, describe and configure static and dynamic NAT -PT.

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In this chapter, you will be able to: Describe the structure of an IPv4 address, describe the purpose of the subnet mask, compare the characteristics and uses of the unicast, broadcast and multicast IPv4 addresses, explain the need for IPv6 addressing,...

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In this chapter, you learned to: Explain why routing is necessary for hosts on different networks to communicate; describe IP as a communication protocol used to identify a single device on a network; given a network and a subnet mask, calculate the number of host addresses available;...

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In CERTs 2001 annual report it listed 52,000 security incidents the most serious involving: IP spoofing intruders creating packets with false address then taking advantages of OS exploits eavesdropping and sniffing attackers listen for userids and passwords and then just walk into target systems as a result the IAB included authentication and encryption in the next generation IP (IPv6)

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The U.S. Department of Defense (DoD) created the TCP/IP reference model because it wanted a network that could survive any conditions. The TCP/IP model has since become the standard on which the Internet is based. In 1992 the standardization of a new generation of IP, often called IPng, was supported by the Internet Engineering Task Force (IETF). IPng is now known as IPv6.

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The key to a successful hierarchical network structure is proper IP address management. If addresses are assigned appropriately, it is possible to summarize routing information. TIP Each area used by OSPF or integrated IS-IS should have a contiguous set of network or subnet numbers assigned to it. The area border routers should summarize that set of addresses with an address mask. Summarization provides substantial benefits for your network.

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The Cisco software feature documentation in this configuration guide often includes information about features that are shared across software releases and platforms. This guide may contain information that is not specific to your particular platform or is not supported in your software release. Additionally, some configuration guides contain content that may be superseded by documentation from a later software release.

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Implementing IP Addressing Services. Objectives: Configure DHCP in an enterprise branch network, Configure NAT on a Cisco router, Configure new generation RIP (RIPng) to use IPv6. Every device that connects to a network needs an IP address. Network administrators assign static IP addresses to routers, servers, and other network devices whose locations (physical and logical) are not likely to change. Administrators enter static IP addresses manually when they configure devices to join the network. Static addresses also enable administrators to manage those devices remotely....

55p thanhtung_hk 05-11-2010 112 23   Download

Wireless local area networks Virtual LANs provide support for workgroups that share the same servers and other resources over the network. A flexible broadcast scope for workgroups is based on Layer 3 (network). This solution uses multicast addressing, mobility support, and the Dynamic Host Configuration Protocol (DHCP) for the IP. The hosts in the network are connected to routers via point-to-point connections. The features used are included in the IPv6 (Internet Protocol version 6) protocol stacks. Security can be achieved by using authentication and encryption mechanisms for the IP....

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IP version 6 (IPv6) was developed to overcome the limitations of the current standard, IP version 4 (IPv4). IPv4 allows end systems to communicate and forms the foundation of the Internet as we know it today. However, one of the major shortcomings of IPv4 is its limited amount of address space. The explosion of new IP-enabled devices and the growth of undeveloped regions have fueled the need for more addresses.

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