top down network design work
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8/8/2019 Top Down Network Design Work
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Inter American University of Puerto Rico
Guayama Campus
Graduate Program in Computer Sciences
CSNS-5100 Network Analysis and DesignDr. José René Colón (Professor)
Project Proposal
Student: Gustavo Velázquez Dávila
Student#:G00304238
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Index
Introduction……………………………………………………………………………………………………….3
Project Description……………………………………………………………………………………………….4
Company Background…………………………………………………………………………………………..8
Justification……………………………………………………………………………………………………….11
3.2 Stakeholders Definition……………………………………………………………………………………..12
3.3 Network Preparation…………………………………………………………………………………………13
3.4 Network Planning……………………………………………………………………………………………..19
3.5 Network Design Plan………………………………………………………………………………………….21
3.6 Annotated Bibliography…………………………………………………………………………………24, 25
3.7 References……………………………………………………………………………………………….25
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Introduction
In the following work I will present a summary and a complete assessment of a proposal network design for
the Patillas City Hall in order to serve to over 22,000 habitant from that town, the proposed changes are
necessary to improve the service and to increase the employee efficiency. Our project is to plan a network
design for the best known for everybody E-government is a general term describing is the use of technologies
to facilitate the operation of government and the disbursement of government information and services. The
system will serve for the municipality to: Increase revenue, Improve communications, Add a new modern
technologies, Improve security and reliability in critical operation, Offer better customer support, Offer new
services. As we know every company over the world is using the technologies to offer better customer support
and new services, we think that is time now that the public sectors recognize the opportunity is now over the
table. In this case we will notice that we going to work in a place that the infrastructure present is very limited,
so we will have the chance to integer all the municipality department in the use of new technologies, new
opportunities and create basically everything new. The new design is necessary due to the project of the new
city hall building was cancelled and by this reason is very important to design a network that will satisfy the new
requirements in the 21 century. The new network description will has 2 Cisco switches each one with 60 ports
two new servers, a router to go to the Internet, the departments will be segmented logically for security
concerns, VPN will be implemented as security measure too. Our system will be designed capacity of run video
conference and connected to other public agencies as DTOP, IRS, and others, the network layout will give you
a good idea of all this.
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Project Description
The project will consists in a Client /Server environment with 72 IBM computers 4 HP laser jet printers, 2
wireless access point, 2 servers that will act as a file server, email server and application server, 2 Cisco
switches with 60 ports each one with gigabit capacity and 2900 Cisco router. Another thing included will be the
cabling that will be implemented the EIA/TIA 568-B standard. A logical segmentation of the network need to
take place in order to avoid network congestion and at the same time implement security between departments
as example the Human Resource department doesn’t need to have access to the finance department. Wan
services with a leased line will be implemented using the AT&T company for a T1 service this will be necessary
for the service online that will be given to the general public as examples a business owner can pay their taxes
online without need to be physically in the City Hall or the people can get documents needed start a new
business and student can get information needed to complete an assignment of the Patillas town.
Workstations: The workstation will be allocated in each area needed as example if Human Resource need 8
workstation those stations will be in HR area, the recommended workstation will be the IBM MP 58 model for
the complete network one of the main reason to select IBM machines are because IBM machines encrypt the
user id and password as they went across the network, if the user id and password went unencrypted through
the network, using a network diagnostic tool called a LANanalyzer those data as user id
and password can be obtained in clear text. The system will use Novell Netware to
make the log in where users need a user identification and password where their
accounts, user id and password will be unique; the security policy will clarify all
those aspects. None data will be allowed to be stored locally in any workstation
because if you left users to save data in the HD locally then you must perform a
data sensitivity or risk analysis to determine the level of exposure in order to install
the proper third party security product.
Router 2900 series: This device will be connected to the leased lines this device
is the device that let the users navigate through the Internet, in this device we can
implement security policy as Access list control to improve security. At the same
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time this layer 3 device will need some configuration as the following: Host name,
Interfaces configuration with proper IP addresses, the VTY that is needed to perform
remote connection by the Administrator in case of failed leased line or other fail
personal in charge is out of office, the OSPF routing protocol will need to be
configured and a BRI interface in case of fail of the leased line dial backup service is
necessary. Another configuration needed will be NAT in the router to save IP
addresses due to the addressing scheme used in the LAN will be a private
addresses.
Cabling: The cabling standard used will be EIA/TIA 568-A (UTP) cat 5e with the R-
J45 connector as we know this standard defines a hierarchical cable system
architecture, in which a main cross-connect (MCC) is connected via a start topology,
the reason for having a 'Standard' is to define a method of connecting all types of vendors voice and data
equipment, over a cabling system that uses a common media, common connectors and a common
topology. This means that a building can be cabled for all its communications needs without the planner
or architect ever having to know what type of equipment will be used. the cabling need to be
certified with the correct calibrated instrument before perform any device
connection with it and this certification is about the distance that it maximum
allowed is 90 meter for horizontal cabling, Insertion loss, Near end crosstalk,
Propagation delay, Attenuation to Crosstalk Ratio – Near End and others
parameters. The cabling running through the building need to be identified in order
to isolate network fails and to keep a good practice of a well organized job.
Servers: In today’s downsized environment the File Server is usually set up to
allow a System Administrator to have total control over the system. This means
that the Systems Administrator usually functions as the administrator, security
officer, programmer, capacity planner, quality assurance group, and the change
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control group. In other words, at this time in the deployment of Client/Server
applications, one individual usually has total control over all the data files. In the
proposed network we will set two servers one of them will act as a: email server,
application server and web server the other one will act as a file server to save all
document and all data generated by the different department each one will have
2TB of data capacity in order to avoid congestion and to make sure all of them work
smoothly. In servers the Administrator has the responsibility of create account
assign temporary passwords and set the appropriate privilege to all users as
example only HR director can modify the job description of a position, users from
the mayor office will not going to have that privilege. Another advantages of all this
new system is that will give reliability at all the process when may be a legal issue
it’s been discussing in a court or any kind of legal forum.
Scheme Addressing: The scheme addressing used will be an IP dynamic
addressing where the address usually is written in dotted decimal notation, for
example 192.3.4.7 that means that host 7 is on network 192.3.4.0; stations in an IP
environment are call host. The term dynamic means that a DHCP will assign the
address automatically that means that client dynamically request configuration
parameters from servers, the DHCP goal is that clients should require no manual
configuration and the Administrator should not have to enter any per-client
configuration parameters into servers. All of this means that the DHCP server
assigns an IP address to a client for a limited period of time. The private IP
addressing will be the method used for the network in this kind of addressing the
Administrator assigns to internal network and host without any coordination from an
ISP or the Internet Assigned Numbers Authority (IANA). An ISP or the IANA provides
public addresses for web servers or other servers that external user access. One
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advantages of private network numbers is security, private network numbers are
not advertised to the Internet in other word private address do not advertise to the
Internet because they are not globally unique and that’s why a security in private
addressing improve. This addressing scheme makes easier to change the ISP in the
future, by the way if private address is used the only address changes required are
in the router or firewall providing NAT services. The Network address translation
(NAT) is an IP mechanism for converting addresses from an inside network to
addresses that are appropriate for an outside network and vice versa.
Switches: The use of this devices for this network is essential as we know switches
are devices that operate in layer 2 of the OSI model, the network will have two
Cisco switches each one with 60 port with gigabit capacity with cut-through
processing, in cut through switches they quickly look the destination address (the
first field in LAN frame), determines the outgoing port and immediately starts
sending bits to the outgoing interface. This is one of the reasons that switches offer
lower latency than traditional bridges. The other advantages of these devices are
that switches are that they can make partitioning in LANs without incurring in
latency associates with bridges; they behave as a bridge except that they are
faster. Another advantage is that to avoid excessive broadcast traffic switched
networks can be segmented with VLANs and at the same time we make the network
more secure and less congestion. Switching alleviates congestion in Ethernet LANs
by segmenting into multiple collision domains, this reduce traffic on each segment
and increase available bandwidth.
Software: Electronic Mail, File Sharing Access, Groupware, Web Browsing and
Microsoft Dynamics solutions that will be the software used to handle multiple tasks
inside the city hall operation. Why use this? Because Citizens are becoming more
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vocal in their demands for better services that are more citizen-centric. At the same
time, government agencies are faced with more limited public funding and
requirements to show greater accountability in managing these limited resources,
this software will help us manage finances, human resources, citizen relationships,
funds and grants, and service delivery—all with a low total cost of ownership. Every
day, these tools are used by government organizations to provide more effective
services with greater accountability.
Increase efficiency and effectiveness
• Gain real-time insight into organizational information and metrics for
better decision-making.
• Streamline and automate critical processes to free up time for value-
added work.
• Integrate data and streamline information flow across different
systems, departments, and agencies for greater collaboration.
• Enable regulatory compliance through accurate fund and account
management.
Effectively manage your most valuable asset—people
• Simplify the management of employee data, payroll, benefits, and
performance.
• Comply with employment-eligibility and injury-reporting requirements.
• Provide employees with security-enhanced Web access to human
resources (HR) and payroll data.
Increase citizen satisfaction
• Gain a holistic view of citizen interactions across multiple
communication channels.
• Improve response to citizen requests with centralized databases and
automated follow-up tools.
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• Enable one-stop citizen self-service through Web portals.
• Increase ability to analyze service trends and respond quickly to
changing constituent needs.
• Conduct targeted community outreach with comprehensive
communications tools.
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Company Background
The City Hall of Patillas is located in the middle of Patillas town with a total of about
400 employees including all employee that their works is completely out of the
office or running through all the city and as we all know the main reason of it is
bring services to over twenty two thousand habitant and others that come from
other places as tourist, contractors, attorneys, physicians and others. At this time
the Patillas City Hall do not have any web page it’s depend for information of
www.leonespatillas.com but we planned to register a new domain
www.patillaspr.gov totally independent from the first mentioned web. In the new
projected web people will get information historic information from the town, can
apply for public job, will make transaction as pay any debt of taxes or any other,
they can fill online document as document needed to start a new business, they will
print other necessary document to perform any public transaction without need to
go physically to the city hall. At this time the infrastructure available in this city hall
is basically none they just have 15 terminals in the complete building as example
and is true people from the CRIM office share a computer for almost 4 employee to
perform their duties, people from the tax fundraising office only have two terminals
with one printer to assist hundred of business people weekly to get their patent, pay
their taxes and others efforts. The other critically aspects of all this is that data
generated by them are saved locally in the workstation, where people can change
document without left any trace, they don’t log in with usernames and passwords in
other words they still in the 1980’s. The only offices that use Internet is Finance, the
mayor office and the Head Start office that is in the main building and the federal
government require head start to have Internet service, but all this offices don’t
save data in any special storage they saved locally and don’t backup anything. The
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finance office use an old software that at this time nobody knows how is called to
perform their duties and they work in a ineffective environment, because the
physical aspects is not good, we can observe an old cat-5 cabling running through
any place without be well organized in order to preserve a good place for work and
create a favorable work environment. At this time the IT department is represented
by an outside contractor of only one people who come to the offices when some
issues with the workstations are reported. The main departments of the city hall
are: Finance, Human Resource, CRIM, Head Start, Civil Defense, Housing
Department and Tourist Office, those department need changes in the way they
operate due to they use a load of procedure manually and this creates slow and
poor services to the general public and cause that inefficient service in all aspects.
We can thing that this new system will fix the 100% problems of the Patillas City
Hall, but in the way we implement the new system we will see favorable changes in
all aspects because there is no way that operation in public office get worse with
the new system. A this moment and the information collected in a visit to the
Patillas City Hall 72 employees need a computer to perform duties that’s means
that they are needing a complete new system to really put them in the century 21
during the visit we observe that the most complete office with workstation (4) is the
Head Start office due to the requirements of the Federal government to be
committed with a services to the little’s.
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Justification of Project
The new project will be justified due to inefficiency observed in process due to lack
of technology use creating this poor service to the public, some benefits of the new
project will be: Increase Revenue and profit for the city, Improve communications
with other government branches and the general public, Modernized an out dated
technologies, Improve security and reliability in city hall operation, Offer better
customer support, Offer new customer services, Move to a global-network business
model, Reduce telecommunications and networks costs including phone service
payment, due to in order to make a phone call to San Juan the employee can send
an email, other example of cost reduction is the capacity of Video Conference, may
be a meeting with the Governor in the Old San Juan can be accessed by video
conference saving cost in fuel, time and employment efficiency due to when
meeting finished they can perform other duties instead of be driving from San Juan
to Patillas and vice-versa. Fax services can be partially eliminated with a copier with
the capacity of be connected to the LAN where employee will scan a document and
send it through his email and there is not paper wasted, more secure
communication and a document that will go directly to the destination without fear
that any person will get access may be to a confidential document. Another benefits
is that the HR department will have absolutely control of the confidential document
as: employee position, salary, disciplinary actions, any health condition, contract
time, and a complete list of all employee with all the information as: date hire
address, nuclear family, phone numbers, days of vacation balance and more.
Finance department can has all this information too including salary increase,
position salary, money pay in overtime, purchase order information, money pay in
all expenses including all contractor that make business with the municipality, this
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will help them with Contralor Office auditing due to everything will be accessible all
the time and there is no need to go to search in an old box document that may be
get lost or get damage creating writing observation by the Auditors or even worse
be cited by the court.
Stakeholders
PUERTORICO GOVERNMENT
US FEDERAL GOVERNMENT
PUERTO RICO TAX PAYERS
The project will be realized with public fund that come from American Recovery Act, Puerto Rico
government support with funds the project from a special assignment and Puerto Rico tax
payers from sales tax funds. The risk of this project is the burocracy of government that
sometimes act as a firewall by themselves and by general public, but now thinking in the new
government philosophy of process automation it is alienated with Central and Federal
government, so the first risk was the funds consignation, but at the same time is a project that
President Barack Obama is pushing to states and US territories. The other risk is that
employees and syndical leadership begins to rise messages that this is for employment
reduction or privatization of the services
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Network Preparation
Name of new solutions or applications
1) Electronic Mail2) File Sharing3) Groupwise4) Microsoft Dynamics5) Web Browsing6) OS Windows 7 Pro.7) Windows Server 20088) Office 2007
Proposed Network: As described the proposed network will consist basically in over 72 new
workstations, two Cisco switches each one with 60 ports for network future grow, two servers
that will be use for data storage, web server, apps server, email server. The old building cabling
will be replaced totally for a new one, a new web page will be available for general public where
people can perform certain type of transaction to save time and money to them. The Finance
and HR departments will use Microsoft Dynamic software in order to increase employee’s
productivity, better and fastest services this software features were described in previous page.
New Cisco Router will connect our network to the leased lines of the Telco infrastructure the
company and it will provide a T1 service to the new City Hall network.
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Technical Requirements:
1) Workstations: The workstations will use 64 bits Windows 7 professional with
2GB of RAM memory an Intel dual core processor, Video card of 256mb and a
HD of 80GB
2) Switches: The Cisco AS5350 universal gateway is a one-rack-unit, two, four, or
eight T1/E1 gateways that provide universal port data, voice, wireless, and fax
services on any port at any time. The Cisco AS5350 offers high performance and
high reliability in a compact, modular design. This cost-effective platform is
ideally suited for Internet service providers (ISPs) and enterprises that require
innovative universal services. The Cisco AS5350 supports widely deployed
routing protocols, including those generally found in high-end access servers and
routers (that is, Border Gateway Protocol Version 4 [BGPv4], Open Shortest Path
First [OSPF], Enhanced Interior Gateway Routing Protocol [EIGRP], and
Intermediate System-to-Intermediate System.
3) Cisco Router 2811: The 2811, a compact platform, delivers multiple services –
including state full firewall, NAT and hardware-based intrusion detection (IDS) –
along with high-capacity WAN transport, obviating the need for multiple separate
appliances. It deliver a full telephony services including Cisco Call Manager and
this router can sustain 2 T1bidirectional WAN data traffic.
4) Servers: For this task we choose a Dell Power Edge server T710 we choose
Dell due to they are a well known vendor with discount to some public institution
we are going to give 50MB to each employee for storage purpose, the OS
Windows Server 2008 will be keep separately from the files, this will protect the
files if OS has to be reinstalled. The staff of director and the mayor will have 2GB
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of data for storage. The feature of this servers are: Windows Server 2008 OS,
two hard drive of 500GB each configured in RAID 1(mirroring). The
DellTM PowerEdgeTM T710 offers customer-inspired usability with excellent
system and image commonality. The PowerEdge T710 features a clean, logical
layout of components and power supply placement for quick installation and
simplified deployment.
An interactive LCD provides system health monitoring, alerts and control of basic
management configuration from the front of the server. A built-in AC power meter
and ambient temperature thermometer can be monitored from the LCD without
software tools.
With up to 16 hard drives and up to 144GB of memory, the Dell PowerEdge T710
is ideal for large capacity computing. A customer inspired design provides
excellent system commonality along with a clean, logical layout of components
and power supply placement for quick installation and simplified deployment.
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Scalability Goals: The scalability means how much growth a network design must support. In
the proposed system for about 72 users adding about 4 printers one copier, it will support about
80 nodes and we select switches with 60 ports each one that will give us over 40 port free for
future growth, a T1 Internet services enough to run videoconference and support a load of users
connected to the internet, our router has capacity to connect two T1 connection that let
administrator increase bandwidth in case of a higher demand by the network and users, the
router also has capacity for future VoIP network. The servers with capacity each of 1TB and OS
server 2008 make sure any future growth for this network with memory capacity of 18 DIMM
slots of 1GB to 16GB DDR3. Analyzing the proposed network design it should be able to adapt
to increases the network uses and scopes.
Availability Goals: Refer to the amount of time a network is available to users in the presented
case the, the proposed network will be available most of the time due to the operation of the city
hall is about 7:30 am to 5:00 pm. The backup will be performed at weekend on Saturday in a
short period of time this will give us the commodity that the operation of the government is
practically cero on weekends and no interruption for personnel duties will be necessary only
outside users can observe interruption in the web page in about 6 hours in a year giving 99.9%
of availability for them. Unless and power failure occur or a mayor rupture the network for
employees will be 99.9% available.
Performance Goal: When analyzing technical requirement and planned infrastructure we can
say that this system will meet the goals of the expected performance. Bandwidth will be a T1
with 1.544 megabits per second Depending on what they are doing; a T1 line can
generally handle quite a few people. For general browsing, hundreds of users are
easily able to share a T1 line comfortably. The total capacity in use will be moderate
due to city hall employee no need to be online 100% to do their jobs. The maximum
of utilization will be under the system capacity and no network saturation is
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possible. Throughput is the average rate of successful message delivery over a
communication channel in this new system analyzing the complete infrastructure
we can predict that this goal will be meet due to the complete system is an updated
one.
Security goals: One or the most important goals is security, our system will have a border
router that will work as firewall at the same time of provide connection with our ISP. VLAN’s
between departments implemented provide another way of security, an anti-virus is another tool
to improve security. Client connects to the proxy server, requesting some service,
such as a file, connection, web page, or other resource, available from a different
server. The proxy server evaluates the request according to its filtering rules. For
example, it may filter traffic by IP or protocols.
Administrative Goal: The network administration will be performed by two help desk personnel
they will work with new accounts, security, and system performance. At the same time they
have to make sure that system use is according to the policy and they need to watch for
backup, storage and documentation.
Use goal: LAN will increase the efficiency of workers by letting them exchange data
and by eliminating redundant effort three of the most common benefits for the
proposed network are: increased efficiency, improved communications and lowered
costs. Users will have prohibited download software with copyright infringement,
download executable programs, destroy any hardware or software, printing files not
relates to their jobs as example print a picture of Jennifer Lopez or other. System
administrator have to encourage the well use of the network if those policy are clear
and communicated to the personnel the use goals will be accomplished.
Adaptability goal: The technology used in the new system will let us incorporate
any elements without making hard to implement as described the hardware uses
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are with capacity to incorporate new elements as VoIP, increase the capacity of
storage, capacity of add more nodes to the network, the addressing scheme let us
the flexibility to change the ISP at any time.
Cost goal: The cost goal need to be achieved to avoid detractors of the system be opposed,
the time will tell if money used will return in benefits, but in places as the city hall of Patillas
there is no way to be worsen because there is no present any kind of technology, and all money
expenses will result in benefits as: reduce corruption, increase the taxes revenue, reduce paper
use, fastest services, mobility outside the building will be reduced, reduce the use of faxes and
telephone lines, communication between personnel.
Warranty goals: This will be achieved due to new system will be validated, tested and may be
modified before take place, people will be trained and educated in the use of its.
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Network Planning: The network planning will take place in a building of 96 feet of length 80
feet of width and 45 feet high, where the gross of the work take place in the first floor, the
second floor is used for municipal legislature when meet all Wednesday at night. The hardest
work identified is the cabling phase due to this is an old building with areas where the cabling
activity will be difficult because when this building was designed this technology was not
available. The targeted time to finish the project will be 10 month.
Activity Approximated time CommentsDesign 3 month 1 certified technicianCabling 1.75 month 5 Outside contractorsHardware&Software 1month 2 certified technicianConfiguration 2 weeks 2 certified technician
System Validation 1.5 month 4 certified technicianTraining 1 week 2 outside contractor
Different system phases
F l o w c h a r t
Phase
Start design CablingHardware&Software
InstallationConfiguration Validation Training End of Project
Project Approximated Cost
Design $7,000Router 2800 series $1,8992 Cisco Switches AS5350 $8,997*2= $17,994Hardware Configuration $4,500Software Licenses $27,000Cabling $35,0002 Servers $14,800Validation $15,500Training $12,300Total Cost $135,993
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Network Design Plan: The network design plan is one oriented to the client/server with a
flat architecture or topology with private addressing scheme an example of a private address is
10.2..1.2 and the default subnet mask of 255.255.255.0. The network will be segmented
logically and with VLAN’s the switching configuration will have the VLAN’s and spanning tree
protocol to avoid switching loops this is used to avoid network loop and allow redundancy,
remember that layer 2 devices forward all broadcast by default. The proposed network will
support multicasting for video conference purpose Multicast is a different beast entirely At first
glance, it appears to be a hybrid it allow multiple recipient to receive messages without flooding
the messages. Multicast work by sending messages or data to IP multiple group addresses.
Routing process will use OSPF as routing protocol the RP gathers information about available
networks and the distance or cost to reach networks. In addition to directing packets, a router
may be responsible for filtering traffic, allowing some data packets to pass and rejecting others.
Filtering is a very important responsibility for routers; it allows protecting computers and other
network components from illegitimate or hostile traffic. Strategic for the network management is
use a software call SOPHOS this product will let us to get the level of protection we need with
high-capacity, high-availability gateway and groupware email security and data protection via
anti-malware, anti-spam and data loss prevention technology, level of protection you need with
a choice of endpoint security solutions that keep you protected against the latest threats, reduce
the impact on your users, block web threats at the gateway, prevent phishing and create and
enforce acceptable internet use policies to provide essential safeguards for data loss and
protect your confidential information and ensure regulatory compliance with a range of
encryption products that deliver policy-based security across mixed environments and operate
transparently to your users. Administrator will be in charge of write the policy and make sure the
proper use of the system.
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Note: Firewall is a Cisco Router
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This is the proposed network design with redundancy between switches, the network computers
are identified by department and each one will be a separated VLAN’s. and logically segmented
by private IP addresses.
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Annotated Bibliography:
Cisco − Improving Security on Cisco Routers
Cram Session CISCO CCNP Managing Network Security.
Cisco CCNP Routing Study Guide
A lot of readers may already be familiar with Cisco and what it does. However,those of you who are new to the field just coming in fresh from yourMCSE, or maybe even with 10 or more years in the field but wishing to brushup on the new technology, may appreciate a little background on Cisco
THE EASY GUIDE TO DATA AND VOICE NETWORKING
Here’s a strong candidate for the most important word for the 21stCentury. The word is Convergence. It’s important because it will bringabout one of the most subtle, yet profound changes in our modern way of
life. Almost since its invention, the telephone has been a standard piece of equipment
IP Network Design GuideMartin W. Murhammer, Kok-Keong Lee, Payam Motallebi,Paolo Borghi, Karl Wozabal
Encyclopedia of Networking 2nd edition by Wernel Feibel
As in the first edition, I’ve tried to make this Encyclopedia a comprehensive sourceof information. about matters relating to networking. I’ve also tried topresent the information in a clear and useful manner
ROUTER SECURITY CONFIGURATION GUIDE
This document is only a guide to recommended security settings for Internet
Protocol (IP) routers, particularly routers running Cisco Systems Internet
Operating System (IOS) versions 11 and 12.
TCP/IP TUTORIAL AND TECHNICAL OVERVIEW OF IBM 7nd edition
John Katrel, John Karas, Adolfo Rodriguez
The TCP/IP protocol suite has become the de facto standard for computercommunications in today’s networked world. The ubiquitous implementationof a specific networking standard has led to an incredible dependence on theapplications enabled by it. Today, we use the TCP/IP protocols and theInternet not only for entertainment and information, but to conduct ourbusiness by performing transactions, buying and selling products, anddelivering services to customers.
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8/8/2019 Top Down Network Design Work
http://slidepdf.com/reader/full/top-down-network-design-work 25/25
CISCO ROUTER HANBOOK George Sackets
We have all heard the saying "It’s what’s inside that counts" at some point in our lives. In theworld of networking Cisco Internetwork OS”
CCNA STUDY GUIDE
Since its inception, the Cisco Certified Network Associate program has establisheditself as the premierinternetworking certification. Sybex is proud to have helped hundreds of thousandsof CCNA candidatesprepare for their exams in recent years, and we are excited about the opportunityto continue to provideindividuals with the knowledge and skills they’ll need to succeed in the highlycompetitive IT industry.
References:
Routers and Routing Basics, Wendell Odom & Rick McDonald
Cisco Networking Academy Program 2008 v3.1
Cisco Networking Academy Program First-Year Companion Guide
Top-Down Network Design Priscilla Oppenheimer
Windows 7 Bible Jim Boyce
www.cisco.com www.google.com
www.ibm.com http://www.utdallas.edu/~chung/SA/2client.pdf
www.ieee.org
CCNP Switching Study guide
Cisco IOS Access List
Dictionary of Networking
Cisco Designing Network Security
CCNA 2 Module 1 WAN& Routers
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