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9. ENTERPRISE NETWORKING & THE INTERNET

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9. ENTERPRISE NETWORKING & THE INTERNET. ENTERPRISE NETWORK. HARDWARE; SOFTWARE; TELECOMMUNICATIONS, DATA RESOURCES MORE COMPUTING POWER ON THE DESKTOP NETWORK LINKING SMALLER NETWORKS *. INTERNETWORKING. LINK NETWORKS EACH RETAINS IDENTITY INTO INTERCONNECTED NETWORK *.

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enterprise network
ENTERPRISE NETWORK
  • HARDWARE; SOFTWARE; TELECOMMUNICATIONS, DATA RESOURCES
  • MORE COMPUTING POWER ON THE DESKTOP
  • NETWORK LINKING SMALLER NETWORKS

*

internetworking
INTERNETWORKING
  • LINK NETWORKS
  • EACH RETAINS IDENTITY
  • INTO INTERCONNECTED NETWORK

*

client server model
CLIENT / SERVER MODEL
  • SPLITS PROCESSING
  • CLIENT
  • SERVER
client
CLIENT
  • USER POINT - OF - ENTRY
  • COMPUTER / WORKSTATION / LAPTOP
  • USER INTERACTS WITH CLIENT
  • THRU GRAPHICAL USER INTERFACE (GUI)
  • ENTER & RETRIEVE DATA
  • ANALYZE & REPORT

*

server
SERVER
  • COMPUTER SATISFIES USER’S NEEDS
  • NOT VISIBLE TO USER
  • PROCESSING
  • ACCESS TO DATABASES

*

electronic commerce
ELECTRONIC COMMERCE
  • DOING BUSINESS ELECTRONICALLY
  • AUTOMATION OF BUSINESS - TO -BUSINESS TRANSACTIONS

*

slide8
INTERNET CAPABILITIES

CAPABILITY

FUNCTIONS SUPPORTED

E -MAIL

PERSON -TO-PERSON MESSAGING; DOCUMENT SHARING

USERNET NEWSGROUPS

ELECTRONIC BULLETIN BOARDS

CHATTING

INTERACTIVE CONVERSATIONS

TELNET

LOG ON ONE COMPUTER, WORK ON ANOTHER

GOPHERS

LOCATE TEXT USING HIERARCHY OF MENUS

ARCHIE

SEARCH DATABASES FOR FILES AVAILABLE FOR DOWNLOADING

WAIS

LOCATE FILES IN DATABASES USING KEYS

FTP

TRANSFER FILES FROM COMPUTER TO COMPUTER

WORLD WIDE WEB

HYPERTEXT LINKS TO RETRIEVE/FORMAT/DISPLAY INFORMATION

internet address
[email protected]

INDIVIDUAL OR ORGANIZATION NAME

HOST COMPUTER

DOMAIN

LOCATION

INTERNET ADDRESS
retrieval on the internet
RETRIEVAL ON THE INTERNET
  • GOPHER: Character-oriented tool; Locates Text Thru Easy-to-use Menus
  • ARCHIE: Tool for Key-word Searches of Databases; Provides File Names
  • WIDE AREA INFORMATION SERVERS (WAIS): Tool for Key-word Searches of Databases; Requires Database Names
  • FILE TRANSFER PROTOCOL (FTP):Easy Tool for Transferring Remote Files

*

world wide web www
WORLD WIDE WEB (WWW)
  • STANDARDS TO STORE, RETRIEVE, FORMAT, DISPLAY INFORMATION
  • CLIENT-SERVER ARCHITECTURE
  • GRAPHICAL USER INTERFACE
  • DYNAMIC LINKS TO OTHER DOCUMENTS
  • EXPLOSION IN BUSINESS USE

*

world wide web www1
WORLD WIDE WEB (WWW)
  • HYPERTEXT MARKUP LANGUAGE (HTML):Hypertext Tool to Create Dynamic Links to Same or Other Documents
  • BROWSER: Tool Supports Graphics, Hyperlinks, to Navigate Web
  • SEARCH ENGINE: Tool for Locating Sites, Information on Internet / WWW

*

world wide web www2
WORLD WIDE WEB (WWW)
  • HOME PAGE: WWW Text / graphics Screen; Welcomes User; Introduces Organization; Starting Screen for Document
  • WEB SITE: All WWW Pages Maintained by an Organization.

*

www address
http//www.datamation.com

GO TO WEB

WEB SITE NAME

TYPE OF ORGANIZATION

WWW ADDRESS
internet benefits to organization
INTERNET BENEFITS TO ORGANIZATION
  • REDUCES COMMUNICATION COSTS
  • ENHANCES COMMUNICATION; COORDINATION
  • ACCELERATES KNOWLEDGE DISTRIBUTION
  • ELECTRONIC COMMERCE
intranet
INTRANET
  • INTERNAL NETWORK
  • WWW TECHNOLOGY
  • FIREWALL: Security System to Prevent Invasion of Private Networks
  • OVERCOMES COMPUTER PLATFORM DIFFERENCES
  • OFTEN INSTALLED ON EXISTING NETWORK INFRASTRUCTURE

*

benefits limitations of intranets
BENEFITS & LIMITATIONS OF INTRANETS

BENEFITS:

  • Standard Documents Always Current, Available. Less Expensive than Paper
  • Can Create, Coordinate New Documents
  • Virtual Conferencing
  • Project, Order Tracking Simplified

*

benefits limitations of intranets1
BENEFITS & LIMITATIONS OF INTRANETS

LIMITATIONS:

  • Can’t Replace Large TPS Programs (e.g.: Payroll; Accounting; Production / Operations; Marketing)
  • Too Slow for High-Speed Data Transfer
  • Not yet as Functional as Groupware
  • Require Tight Security Control and Careful Management Planning

*

internet challenges
INTERNET CHALLENGES
  • SECURITY: Exposure to Thieves & Vandals; Hackers Steal, Use Passwords; Not Yet Safe for Large Business Transactions
  • TECHNOLOGY: Lack of Uniform Standards; Transfer of Graphics, Video can be Costly
  • LEGAL ISSUES: Need More Laws Governing Electronic Commerce; Are e-mail Contracts, Electronic Signatures Legal?

*

connectivity
CONNECTIVITY

MEASURE OF ABILITY OF COMPUTING DEVICES TO PASS & SHARE INFORMATION WITHOUT HUMAN INTERVENTION

OPEN SYSTEMS: Software Able to Function on Different Computer Platforms. Nonproprietary Operating Systems, Applications, Protocols

*

connectivity for networks
CONNECTIVITY FOR NETWORKS
  • REFERENCE MODEL: Generic Framework for Thinking About a Problem
  • PROTOCOL: Statement of How Specific Task will be Performed
  • STANDARD: Approved Reference Models & Protocols; Determined by Standard-setting Groups

*

transmission control protocol internet protocol tcp ip
TRANSMISSION CONTROL PROTOCOL / INTERNET PROTOCOL (TCP / IP)

REFERENCE MODEL DEVELOPED BY DEPARTMENT OF DEFENSE IN 1972

1. APPLICATION: Provides Screen Presentations

2. TRANSMISSION CONTROL PROTOCOL (TCP): Breaks Data into Datagrams

3. INTERNET PROTOCOL (IP): Breaks, Sends Datagrams as Smaller IP Packets; Can Repeat Transmission to Increase Reliability

*

transmission control protocol internet protocol tcp ip1
TRANSMISSION CONTROL PROTOCOL / INTERNET PROTOCOL (TCP / IP)

4. NETWORK INTERFACE: Handles Addressing and Interface Between Computer & Network

5. PHYSICAL NET: Defines Electrical Transmission Characteristics for Sending Signal Along Networks to Destination

*

open system interconnect osi
OPEN SYSTEM INTERCONNECT (OSI)

INTERNATIONAL REFERENCE MODEL

FOR LINKING DIFFERENT TYPES OF

COMPUTERS & NETWORKS. LAYERS:

1. PHYSICAL: Transmission of Data over Medium

2. DATA LINK: Packaging, Transfer of Packets; Error Checking

3. NETWORK: Routing Packets Over WAN

*

open system interconnect osi1
OPEN SYSTEM INTERCONNECT (OSI)

4. TRANSPORT: Ensures Reliable Data Delivery

5. SESSION: Establishes Communication Links on Network

6. PRESENTATION: Code Conversion for Data Presentation

7. APPLICATION: Specialized User Functions (e.g.: Operating System; File Transfer; e-mail)

*

integrated services digital network isdn
INTEGRATED SERVICES DIGITAL NETWORK (ISDN)

INTERNATIONAL STANDARD FOR

TRANSMITTING VOICE, VIDEO, DATA.

WIDE RANGE OF SERVICE

OVER PUBLIC TELEPHONE LINES.

DEVELOPED LATE 1970s BY CONSULTATIVE COMMITTEE ON INTERNATIONAL TELEGRAPHY & TELEPHONY (CCITT)

*

problems posed by enterprise networking
PROBLEMS POSED BY ENTERPRISE NETWORKING
  • CONNECTIVITY PROBLEMS
  • LOSS OF MANAGEMENT CONTROL
  • ORGANIZATIONAL CHANGES
  • HIDDEN COSTS OF CLIENT / SERVER COMPUTING
  • NETWORK RELIABILITY & SECURITY

*

some solutions
SOME SOLUTIONS
  • MANAGING THE CHANGE
  • EDUCATION & TRAINING
  • DATA ADMINISTRATION DISCIPLINE
  • PLANNING FOR CONNECTIVITY

*

management challenges
MANAGEMENT CHALLENGES
  • Enterprise Networking Requires Change of Mindset
  • Difficult to Enforce Connectivity Standards
  • Centralization vs. De-Centralization
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