Transcript Network and Infrastructure

Components and Artifacts
Network and Infrastructure
Copyright © 2013-2014 Curt Hill
Recall the Cube
Copyright © 2013-2014 Curt Hill
Introduction
• In this EA3 model there are five
levels
• Goals and Initiatives
• Products and Services
• Data and Information
• Systems and Applications
• Network and Infrastructure
• This considers the components and
artifacts of the Network and
Infrastructure
Copyright © 2013-2014 Curt Hill
What is this about?
• Hardware
• The main focus is on the operational
computers and networks that the
enterprise owns and uses
• Every piece of hardware comes into
view
• Three categories:
– Computer
– Network
– Other computer related – such as
manufacturing robots
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Networks
• Networks come in several flavors
– Data
– Telecommunications
– Video
• These used to be completely
separate, but are now growing
together
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Data Networks
• Communications mechanisms
between computer systems
• Main goal is carry data/information
between systems
• Data must be digitized
• A Local Area Network is usually
confined to a building
• Intranets are collections of close
LANs
• Wide Area Networks are
geographically
dispersed
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Telecommunications
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Main goal is voice communications
These are telephone networks
Data may be analog or digital
Public Business Exchange (PBX)
serves a business or local
enterprise
• Larger networks are usually public
carriers
– Baby bells
– Cell companies
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Video
• Specialized network designed to
carry video
• Transmit from producing sites to
viewing sites
• May be analog or digital
• Public carriers
– Broadcast television
– Cable/satellite television
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The merger
• Telephone used to be entirely
analog as did television
• In the latter quarter of the twentieth
century telephones went digital
• Broadcast television stopped being
analog in June of 2009
• These may now be transmitted over
the internet
• ND IVN converted from dedicated
video network to transmission over
the internet
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Your turn
• How many kinds of networks do we
have at VCSU?
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Network Pieces
• Every network, regardless of type,
has certain pieces
• A connection point
– Where end users connect
• External interface
– Where this network connects to others,
if it does
• Backbone
– The transmission facilities and the
associated hardware
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Artifacts
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Network Connectivity Diagram
Network Inventory
Capital Equipment Inventory
Building Blueprints
Network Center Diagram
Cable Plant Diagram
Rack Elevation Diagram
Virtually all of these will be
augmented by text documents
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Network Connectivity
Diagram
• Show physical connections
• What we want to see:
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Various systems
Connections between these
Connections to internet or other WAN
Wireless access points
• Consider the pieces of the next
slide’s diagram
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Example
Copyright © 2013-2014 Curt Hill
Network Inventory
• The equipment that makes the
network function:
– Routers, switches and hubs
– Network printers
– Servers
• We want to see:
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Description
Manufacturer and model
Internal ID
Location
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Audience Participation
• As we have seen before, we often
have several diagrams, treating one
thing
– Example: Network Connectivity
Diagram and Network Inventory
• Why do we need this profusion of
documents to describe one thing?
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Capital Equipment
Inventory
• Similar to the network inventory, but
things that are not part of the
network
– Same types of descriptions
• Capital equipment purchases
usually take a different process than
incidental items
– Usually there is a threshold cost point
• Typically heavy equipment intended
to last more than a year or two
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Your Turn
• What kind of things does VCSU have
that might fit into this inventory?
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Building Blueprints
• These are used in planning where
new space may be obtained for:
– Offices
– Storage
– Production
• Also important for planning
placement of computing and
network equipment and cabling
• Like all artifacts, we prefer an
electronic version
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Network Center Diagram
• Floor diagram of how the machine
rooms are laid out
• We want to see a floor plan with the
locations of:
– Equipment racks
– Cooling (if it takes floor space)
– Desks and workbenches (if present)
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Cable Plant Diagram
• The goal of this diagram is to show
network cabling in relation to
buildings
• We would like to see
– The cable types
– Network closets
– Computer rooms
• This should distinguish between the
three types of networks
– Data, voice, video
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Rack Elevation Diagram
• Shows the racks within a server
room, network center or network
closet
• Closely related to previous two
diagrams
• These change over time, so should
be maintained electronically
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VCSU Example
• As of 2013 VCSU maintained this in a
spread sheet
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VCSU Example
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Standards
• Standards is a thread that should
pervade the EA process
• A number of technical standards
exist in networking
• Each of these should be identified
• This will assist the planning process
• Acquisition of new equipment will be
easier when the required standards
are known
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Security
• Networks should be made subject to
security reviews
• The artifacts from this are generally
text reports
• These should include:
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A security plan
Vulnerability test reports
Recovery plan
Continuity of operation plan
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Last word on artifacts
• In the presentations on the five
levels of the EA Cube we have seen
many possible artifacts that
document the enterprise
• This is not the only possible set of
artifacts
• In any particular EA different
documents and diagrams could
have been used
• The EA team determines what to use
– This may be modified as they create
and collectCopyright © 2013-2014 Curt Hill