STATE COMMITTEE FOR COMMUNICATIONS AND INFORMATION OF UKRAINE

Odessa National Academy of Telecommunications after A.S. Popov

Chair of Communication Networks

Technology analysis of data networks. Means and analysis of network configuration based on tcp / ip

Instructional guide to laboratory work number 5 on the subject "Network Technology"

Odessa 2003

Technology analysis of data networks

Authors: Bubentsova L.V., Korchynskyy V.V., Krasovskyy M.L., Yavorskaya O.M.

This tutorial describes the methodical ways and means diagnosis based network stack TCP / IP, used in modern network operating systems. We give concrete, practical examples, characterize the possibility of using diagnostic tools in different situations.

APPROVED by chair of Communication Networks

and recommended to type Protocol number 5 on November 29, 2002

Built ANALYSIS OF CONFIGURATION OF THE NETWORK ON THE BASE OF TCP / IP

1 Purpose of the work

1. Analysis of the built-in network diagnostics based on tcp / ip and getting practical skills of diagnostics.

2 Key statements

2.1 Basic tools used for network diagnostics based on tcp / ip

Internet - the largest and one of its kind network in the world. Among global networks, it occupies a unique position. It correctly regarded as a sub network - the union of many networks, preserving independent significance. Indeed, the Internet has no clearly defined ownership, nor national origin. Any network can be connected to the Internet, and therefore, be considered as part of it, if it uses accepted for Internet protocols TCP / IP (Transmission Control Protocol / Internet Protocol) or is there a converter in the protocols TCP / IP. TCP / IP - an industry standard stack protocols designed for wide area networks. The composition of the family includes protocols UDP, ARP, ICMP, TELNET, FTP and many others. As the manifestation of an unstable individual nodes in the network based on TCP / IP the most important issue is the possibility of its monitoring and analysis. One method of diagnosing networks is the utility (short program) included in of the software package, TCP / IP. The main utilities used in modern operating systems (OS), are:

· Ping - a procedure that is used for testing of the channels and nodes. · Tracert (Traceroute) - displays the addresses of all routers on the way from client to remote host. · Nslookup - check for the correct names in the address conversion and vice versa. · Netstat - displays stats and current connections for the protocol TCP / IP.

· Ipconfig - shows the setup protocol IP. Default displays only IP-address, subnet mask and default gateway for connection each adapter, which is executed for binding to TCP / IP. · Winipcfg - utility similar Ipconfig, but not in working mode command line, and by application interface. It can be use only on Windows 98. · Finger - used to obtain information about the user removed machine. · Telnet - use the Internet standard protocol for obtaining terminal access to remote machines. · Whois - Search the Whois database for registration information net domain name, user's phone number, e-mail address and more. · Net Time - sync system time with master server.