Address Autoconfiguration DNS and ICMP

Every device that communicates in a TCP/IP network must have an IP address configured. The most efficient way to configure end devices in the network is to do so automatically. The Dynamic Host Configuration Protocol is used for such automatic configurations. In this course youll explore the disadvantages of static IP configuration and the steps for autoconfiguration using DHCP. Youll also learn about DHCP including the message format scopes renewal process how it works in a routed network and troubleshooting techniques. The sheer volume of resources available on the Internet and enterprise networks is astounding. Trying to remember the IP address of even a fraction of these resources would be quite difficult. However we can assign names to these resources and use the Domain Name System to translate easy to remember names into their specific IP addresses. In this course youll also learn about the organizations that coordinate the global DNS. Youll explore the organization and structure of the DNS namespace the types of top level domains the purpose of the root name servers and primary and secondary name servers the DNS name resolution process and the DNS message format. Youll also learn to match the abbreviations with the resource record function when give a list of resource record abbreviations. Finally youll examine the advantages of DDNS and DNS troubleshooting tools. The size and complexity of modern networks almost ensures that problems will sometimes occur in the delivery of IP packets. The Internet Protocol provides a mechanism for reporting error information when those problems arise. The Internet Control Messaging Protocol provides for diagnostic and error reporting in a TCP/IP network. Youll learn how ICMP provides error reports and diagnostic messages. Youll explore the layout of ICMP messages as well as the common ICMP message types and their functions. Youll also learn to recognize several common types of ICMP messages by examining output from a protocol analyzer. Finally youll examine how the ICMP time exceeded message is used with traceroute. This course was originally created by Global Knowledge (GK).