storr-network-20020110.ppt

www.storrconsulting.com

Network

Dieter W. StorrJanuary 2002


How can I connect two PC’s ?


Network - Contents

BasicsKVM Switch NetworkWireless NetworkOSI Reference ModelIntranet / Internet


Network - Basics

SNA - Systems Network Architecture Proprietary IBM architecture and set of implementing

products for their network computing within an enterprise.

It became part of IBM’s System Application Architecture (SAA) and it is currently part of IBM’s Open Blueprint.

IBM is finding ways to combine its own SNA within the enterprise with TCP/IP in a larger network


Network - Basics

LAN - Local Area Networks It’s a group of computers and associated devices that

share a common communications line and typically share the resources of a single processor or server within a small geographic area (for example, within an office building).

A local area network may serve as few as two or three users (for example, in a home network) or many as thousands of users (for example, in an FDDI network).


Network - Basics

LAN - Local Area Networks The main local area network architectures are:

Ethernet

Token Ring

ARCnet (Attached Resource Computer Network)

FDDI (Fiber Distributed Data Interface)


Network - Basics

Ethernet IEEE 802.3: Ethernet is the most widely-

installed local area network (LAN) protocol. Specified in a standard, IEEE 802.3, Ethernet was originally developed by Xerox and then developed further by Xerox, DEC, and Intel. An Ethernet LAN typically uses coaxial cable or special grades of twisted pair wires.


Network - Basics

Ethernet10BASE-T: The most commonly installed

Ethernet systems are called 10BASE-T and provide transmission speeds up to 10 Mbit/s. Devices are connected to the cable and compete for access using a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) protocol.


Network - Basics

Ethernet100BASE-T or Fast Ethernet provides

transmission speeds up to 100 megabits per second and is typically used for LAN backbone systems, supporting workstations with 10BASE-T cards.

Gigabit Ethernet provides an even higher level of backbone support at 1000 megabits per second (1 gigabit or 1 billion bits per second).


Network - Basics

token ringA token ring network is a local area network

(LAN) in which all computers are connected in a ring or star topology and a binary digit- or token-passing scheme is used in order to prevent the collision of data between two computers that want to send messages at the same time.


Network - Basics

token ringSecond most widely-used protocol on LAN’s

after Ethernet. The IBM Token Ring protocol led to a standard version, specified as IEEE 802.5. Data transfer rates of either 4 or 16 megabits per second.


Network - Basics

ARCnet (Attached Resource Computer network)

ARCnet is a widely-installed local area network (LAN)

technology that uses a token-bus scheme for managing

line sharing among the workstations and other devices

connected on the LAN.

The LAN server continuously circulates empty message

frames on a bus (a line in which every message goes

through every device on the line and a device uses only

those with its address).


Network - Basics

FDDI FDDI (Fiber Distributed Data Interface) is a

standard for data transmission on fiber optic lines in a local area network (LAN) that can extend in range up to 200 km (124 miles).

The FDDI protocol is based on the token ring protocol. In addition to being large geographically, an FDDI local area network can support thousands of users.


Network - Basics

FDDI An FDDI network contains two token rings, one for

possible backup in case the primary ring fails.

The primary ring offers up to 100 Mbps capacity. If the secondary ring is not needed for backup, it can also carry data, extending capacity to 200 Mbps.

The single ring can extend the maximum distance; a dual ring can extend 100 km (62 miles).


Network - Basics

Hub / Switch / Bridge / Router In data communications, a hub is a place of

convergence where data arrives from one or more

directions and is forwarded out in one or more other

directions. A hub usually includes a switch of some kind.

See USB 7-Port Hub

To connect several

USB devices


Network - Basics

Hub / Switch / Bridge / Router In telecommunications, a switch is a network

device that selects a path or circuit for sending a unit of data to its next destination.

See 8-Port Network Switch


Network - Basics

Hub / Switch / Bridge / Router

A switch may also include the function of the router, a

device or program that can determine the route and

specifically what adjacent network point the data should

be sent to.

In general, a switch is a simpler and faster mechanism

than a router, which requires knowledge about the

network and how to determine the route


Network - Basics

Hub / Switch / Bridge / Router

In telecommunication networks, a bridge is a product

that connects a local area network (LAN) to another

local area network that uses the same protocol (for

example, Ethernet or token ring).


Network - Basics

Hub / Switch / Bridge / Router On the Internet, a router is a device or, in some cases,

software in a computer, that determines the next

network point to which a concept of packet should be

forwarded toward its destination.

See 4-Port Cable/DSL Router


Network - Basics

Hub / Switch / Bridge / Router The router is connected to at least two networks and

decides which way to send each information packet

based on its current understanding of the state of the

networks it is connected to.

A router is located at any gateway (where one network

meets another), including each Internet point-of-

presence. A router is often included as part of a network

switch.


Network - Basics

LAN Server Typically, a suite of application programs can be

kept on the LAN server. Users who need an application frequently can download it once and then run it from their local hard disk. Users can order printing and other services as needed through applications run on the LAN server. Read and write access is maintained by a LAN administrator.

A LAN server may also be used as a Web server if safeguards are taken to secure internal applications and data from outside access.


Network - Basics

Wireless LANMobilityCost SavingsDisaster RecoveryConcerns

Radio signal interference, power management, system interoperability, network security, connection problems, installation issues, health risks


Network - Basics

NOS - Network Operating SystemArtisoft's LANtastic, Banyan VINES, Novell's NetWare, and Microsoft's LAN ManagerNetware, MS NT ServerOne thing comes through loud and clear in the year 2000 State of the VAR Market survey data about network operating systems (NOS). The NOS race seems to be over. Windows has won, and Netware is slowly just going away.


Network - KVM Switch


Network - KVM Switch

KVM Switch PS/2 PlatformControl 2 and more

computers from one console. Price starts at $74.99Cable Kit starts at $19.99

per Computer


Network


Networking Starting Kit

One 4-Port Cable/DSL Gateway RouterTwo Desktop Network

PCI CardsTwo 14' Snagless

Molded RJ45 CAT-5e Patch Cables

Price saw at Belkin: $83.99


Network Switch

8-Port Network Switch (10/100Mbps)Package

One 8-Port Network Switch (10/100Mbps)

One Power Supply One CD-Rom (Belkin SOHO

Networking Software) Compatible with Windows® 98,

Windows® 2000, Windows® Me, Windows® XP. Price: $87.99


Network Switch

8-Port Network Switch (10/100Mbps)Features

Share your Internet connection Exchange data quickly between connected PCs and notebooks,

share printers and other peripherals, and communicate via e-mail Auto-sensing feature offers future scalability of 10Base-T

Networks into 100Base-T Networks Add computers to your network at anytime with the uplink

port(s). Use the dedicated bandwidth provided for each port to enjoy an

efficient and error-free network Compliant with Ethernet IEEE 802.3 and 802.3u standards


Network

Ethernet Card ($24.99 per PC) already installed in most PC’s

Router - 8 port Network Switch ($87.99, e.g. Belkin)

RJ45 CAT-5e Patch Cable (starts at $6.99 per PC)

Software Windows NT or free Belkin SOHO Networking Software

included w/ router


Wireless Local Area Network


Wireless Local Area Network

Wireless Desktop PCI Network Card ($164.99)

Wireless Desktop PCI Network Adapter ($49.99)

Wireless Network Access Point ($199.99)

Wireless Notebook Network Card ($109.99)

Wireless Cable/DSL Gateway Router ($249.99)

Wireless USB Network Adapter ($109.99)

Networking Software ($?.??)


Network - Internet Access

KVM Switch

DSL Gateway RouterNAT Firewall

LAN Server

Internet

All Servers have accessto the Internet



Network - Intranet / Internet

LAN Server

Internet

Web Server

Software:- Proxy Server- Cache Server- Gateway Server- Firewall Server- Router- Switch

storr-network-20020110.ppt

Documents

fddi network

network device

network point

token ring network

home network

larger network

network computing

adjacent network