The Importance of Training Hands-On TCP/IP Network Services
Make Your Training Effective Network services are a special class of TCP/IP applications that make it practical and convenient to use a TCP/IP data network‚s resources. In this two day class we discuss the vital TCP/IP applications that run behind the scenes in order to make TCP/IP networks really useful:
·  Domain Name Service (DNS)
·  Dynamic Host Configuration Protocol (DHCP)
·  Simple Network Management Protocol (SNMP)
·  Border Gateway Protocol (BGP)

DNS translates human-readable host names into IP addresses meaningful to routers. How does DNS find just the right address automatically from over 50 million hosts on the Internet? How does DNS work with other network applications? How and where do we implement DNS? What security implications - pros and cons - arise when DNS is implemented?  We will answer these questions as students configure and implement a DNS server and enable DNS in workstations.

DNS looks up names and addresses; DHCP automatically assigns IP addresses, saving large network owners millions in implementation and configuration costs. All the same and again, what are the pros and cons? Students will install a DHCP server, enable DHCP on workstations and routers and watch it dynamically assign IP leases and other vital IP parameters. Since special router commands are needed to pass DHCP requests and responses, students will learn what these are, why they are needed, and where to install them. Students will see for themselves how DHCP and DNS interact, and so understand the integration issues when owners elect to use both as in newer DDNS software offerings, which we will use.

It is said that one should never build a network one can't manage. SNMP is the TCP/IP network management tool. SNMP has proved to be the management answer for production and especially mission-critical networks that require close supervision and instant notification of impending and actual failures.  Students will install SNMP agents on routers and workstations. They will place SNMP network management software into action as they first watch and then deliberately fail router LAN/WAN links and workstations to see how SNMP trap notifications are triggered.

BGP is not an application as such, but it is the glue that binds TCP/IP networks together. Its strategic significance is enormous because it is the only recommended exterior gateway protocol, or EGP. Without it, the Internet and intranets could not exist. Time permitting, we will distinguish between interior and exterior gateway protocols and redefine the meaning of an autonomous system. We will design and build a BGP network that connects several networks together to form an intranet. Students will also learn about Autonomous System numbers, what they mean and how to look them up on the Internet.
 
 

Objectives

Students who complete this class will understand how these "enabling" applications make more visible applications such as the World Wide Web, e-mail and Telnet practical.  Students will leave class with a strong sense of what these applications do because they will have installed and run each of them. Further, graduates will be able to recognize, diagnose and correct some of the most common yet easily-fixed TCP/IP troubles - provided that they know what‚s going on "under the hood".

The class objective is a running, full-service TCP/IP network with all the features one would expect from a sophisticated corporate TCP/IP network.

Class graduates are able to:
· Explain where these applications fit in the OSI Model, and how they relate to other applications and lower layers.
· Use the OSI Model as a troubleshooting tool, and as a way to quickly grasp new terms and technology
· Build a basic network using any, some or all of the four protocols we deploy in class
· Analyze DNS, DHCP and SNMP packets
· Examine and analyze live BGP traffic using a LAN analyzer (time permitting)
· Define what exterior routing is; distinguish between IGPs and EGPs
· Configure Cisco routers to route between autonomous systems
· Install DNS in routers, workstations and servers
· Activate SNMP network manager software and element agents in routers and Windows workstations
· Explain how DHCP works and itemize its benefits and limitations
· Compare DHCP to DNS and see where they complement and conflict
· Understand DNS address resolution, what forms it can take, where it is used and why it is so important
· Use Windows 2000, Windows NT-based and W9x TCP/IP testing and monitoring tools
· Illustrate how the five functions of TCP/IP all work together to form the world‚s most popular network protocol suite
 

Instructional Methods

Balanced presentation and discussion, self-quizzes, paper design labs and hands-on laboratory exercises.
 

Audience

Networking people involved in LANs and TCP/IP networks. These include systems and network analysts and designers, sales staff, troubleshooters, data communications managers and technicians, information managers and LAN/WAN specialists. Application programmers who need a working understanding of LANs and TCP/IP will find value in this class.
 

Prerequisite

Successful completion of LANs, WANs and Cisco Routers class, or six months' hands-on TCP/IP network experience.
 

Duration

 Two days without BGP; three days if BGP is included.
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