Networking Basics Articles

BGP Configuration     To begin configuring a BGP process, issue the following familiar command: Router(config)#router BGP AS-number In BGP, the network command tells the BGP process what locally learned networks to advertise Router (config-router) #network network-number [mask ...

How Switches Learn Addresses - A switch uses its bridge forwarding table (called a MAC table in Catalyst) address table when forwarding frames to devices. With an enpty bridge forwarding table, the switch must flood frames to all ports other than the one it arrivied on. This is ...

Tunneling is the most significant component of VPN technology.  Tunneling is the technique of encapsulating an entire data packet in the packet of another protocol format. When a tunneled packet is routed to the destination node, it travels across the internet work through a logical path. This logical path is referred ...

World Wide Web (abbreviated as the Web or WWW) is a system of Internet servers that supports hypertext to access several Internet protocols on a single interface. Almost every protocol type available on the Internet is accessible on the Web. This includes e-mail, FTP, Telnet, and Usenet News. ...

The Internet is a computer network made up of thousands of networks worldwide. No one knows exactly how many computers are connected to the Internet. It is certain, however, that these number in the millions.  No one is in charge of the Internet. There are organizations which ...

FAQ stands for Frequently Asked Questions. These are periodic postings to Usenet newsgroups that contain a wealth of information related to the topic of the newsgroup. Many FAQs are quite extensive. FAQs are available by subscribing to individual Usenet newsgroups. A Web-based collection of FAQ resources has been ...

FTP stands for File Transfer Protocol. This is both a program and the method used to transfer files between computers. Anonymous FTP is an option that allows users to transfer files from thousands of host computers on the Internet to their personal computer account. FTP sites contain books, ...

TELNET is a program that allows you to log into computers on the Internet and use online databases, library catalogs, chat services, and more. There are no graphics in Telnet sessions, just text. To Telnet to a computer, you must know its address. This can consist of words ...

Electronic mail, or e-mail, allows computer users locally and worldwide to exchange messages. Each user of e-mail has a mailbox address to which messages are sent. Messages sent through e-mail can arrive within a matter of seconds.  A powerful aspect of e-mail is ...

All stations on an Ethernet segment are connected to the same segment. Therefore, all signals are received by all the devices. When devices sent signals at the same time, a collision occurs. A scheme is need to detect and