Lecture 3

Network Management and Mobility

Networked Devices

• • • Networked devices are devices that communicat e with a network.

Technologies include laptops, PDAs, cell and sma rtphones, wikis, intranets, and extranets, GPSs, P OS terminals, and RFID which allow information t o be rapidly collected, processed, shared, and ac ted upon for competitive survival and advantage taking.

Feature-rich wireless devices make collaboration easier and more productive which indicates a m ore integrated, always-connected business enviro nment and lifestyle.

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Apple – Famous for its Creative Connectivity – iPhone……

4G, LTE -> More comming 4-3

Information on Internet Bulletin Boards, Newsgroups, and Social Networking Sites Click to PCWorld Business Center article for more….

Social Networks Go to Work

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Social Networking Shrinks the World

• • • • Social networking via mobile phones is shrinking the world to the size of a small screen.

Micro-blogging is the sending of messages up t o 140 characters.

With more than 3 billion mobile handsets in use in the world (1 for every 2 people on the planet) a powerful force for changes in business and col laboration as well as politics and societies have e merged.

News media, universities, public safety, and othe r organizations are using the technology to deliv er information to a wide audience quickly.

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4.1 Business Networks

Business networks support 4 basic functions: 1. mobility 2. collaboration 3. relationships 4. Search 4-6

Network basics

Figure 4.2 A signal is transmitted from a sender/source to a receiver/destination via circuit or packet switching .

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• • • •

Network Terminology

Bandwidth:

Throughput capacity or speed of a network.

Protocol:

Standards that govern how networked devices exchange information.

TCP/IP:

Transmission control protocol/Internet Protocol) are a suite of Internet protocols.

Broadband:

Short for broad bandwidth . – –

Fixed-line broadband:

Cable or DSL Internet connections.

Mobile broadband

: Wireless high-speed Internet access throug h a portable modem, phone, or other device. 4-8

4.2 Wireless Broadband Networks

• • Enterprises are moving away from unsystematic adoption of mobile devices and infrastructure to a strategic build-out of mobile capabilities . Mobile infrastructure consists of technology, software, support, security measures, and devices to manage and deliver wireless communications. 4-9

• •

4.3 Networks Management and P ortals

When the network goes down or access is blocked, so does the ability to operate or function. Damages when a company cannot operate or fulfill orders include: – lost sales and productivity – – Inability to send and receive payments inability to process payroll and inventory 4-10

TCP/IP Networks • The Internet protocol suite consists of the IP (Internet Protocol) and TCP (Transport Control Protocol), or TCP/IP. • In preparation for transmission, data are digitized into packets and sent via packet-switched networks,

local area networks (LAN),

or

wide area networks (WAN).

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Discovery Discovery

search data sources, in all topic areas, on the Web.

allows users to browse and – – – Search engines Metasearch engines Discovery of material in foreign languages 4-12

Four Largest Search Engines

Google Yahoo Microsoft Network Ask 4-13

Metasearch Engines

Surf-Wax Metacrawler Mamma 4-14

Publication of Material in Foreign Languages

Translation products include: – Altavista – Google – Trados 4-15

Network Computing Infrastructures • • •

Intranets:

a network serving the internal informational needs of a company.

Extranets:

private, company-owned network that uses IP technology to securely share part of a business’s information or operations with suppliers, vendors, partners, customers, or other businesses. Extranets can use virtual private networks (VPNs). Internet.

VPN

s are created using specialized software and hardware to encrypt/send/decrypt transmissions over the 4-16

Figure 4.7 Virtual Private Network (VPN) 4-17

4.4 Collaboration

• • Messaging and collaboration tools include: older communications media such as e mail, videoconferencing, fax, and IM newer media such as blogs, podcasts, RS S, wikis, VoIP, Web meetings, and torrent s (for sharing very large files) 4-18

Collaboration….contd.

• • • • • • • Virtual collaboration Workflow technologies Groupware Teleconferencing Videoconference Web conferencing Real-time collaboration tools 4-19

Workflow and Groupware Technologies

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Telepresence Systems

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Leading Telepresence Systems

Cisco Telepresence 3000 4-22

• •

Collaboration Support Technologi es

Portals, intranets, extranets, and shared workspaces are examples. Web 2.0 or Enterprise 2.0 technologies such as wikis, blogs and microblogs, provide more options to promote and support enterprise collaboration. 4-23

Minicase : Wikis, Blogs, and Chats Support Collaboration at DrKW Wikis used in business continue to grow.

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Wild About Wikis

By Rachael King •

Intel, Motorola, Sony—they're among the companies using Web collaboration tools to promote products and foster teamwork among employees

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Wikis are Web-based tools that make it easy for users to add, remove, and change online content. Employees at companies such as Intel, Motorola, IBM, and Sony use them for a host of tasks, from setting internal meeting agendas to posting documents related to new products.

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Many companies rely on wikis to engage customers in ongoing discussions about products. Wikis for Motorola and T-Mobile handsets serve as continually updated user guides. TV networks including ABC and CBS are creating fan wikis that let viewers interact with each other as they unravel mysteries from such shows as

Crime Scene Investigation.

the wiki is open to the public.

Lost and CSI:

Read about these and other ways companies are warming to wikis. A link is included where 4-27