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Scenarios 137
Scenarios
Scenario 1
To help design the optimum solution and address the issues presented in each chapter, you have
contracted with the design professionals at RouteitRight to help you.
RouteitRight's key personnel are as follows:
Chief Executive Officer (CEO)
Billy Broadcast
Chief Information Officer (CIO)
Megg A. Bight
Senior Telecommunications Engineer
Peter Packett
Director of Sales
Freddy Forklift
Information Systems Manager
Harry Helpnot
Help Desk Manager
Millie Sekkons
Network Specialist
Roddy Routebegone
Distributed Learning, Inc., would like to teach Cisco routing throughout the country. In
conversations with the CEO of Distributed Learning, Billy Broadcast has learned the business
requirements that the network must meet:
·
Deliver to the customers the services they require and demand.
·
Make best use of the resources (bandwidth, people, and capital).
·
Be capable of meeting the demand for growth in subscribers and bandwidth.
·
Be able to support current and future applications, from telephony to multimedia.
·
Have the reach to meet the needs of a global community into the new century.
In addition, Distributed Learning wants to set up remote access centers. At these remote access
centers, students will access video terminals and connect to classrooms that are located at
central sites. In this manner, students in rural and sparsely populated areas will be able to access
the same information that students in metropolitan areas can. For example, a student in Soma,
New Mexico, could access the same classroom resources as a student in Chicago.
Peter recommends that the design include ATM at the core and ATM to the desktop. Peter says
that ATM is the best transport protocol for carrying voice, video, and data, and that currently it
is the only protocol that includes built-in quality of service. Millie likes ATM. She knows that
ATM has high performance. She believes that the students will be thoroughly satisfied with the
performance of the ATM network. Megg wants the group to take a look at the cost of ATM.
Megg has done some cost-benefit analysis for ATM in the past, and she knows that the benefits
of ATM do not always justify the cost. In addition, she has heard that Gigabit Ethernet might be
suitable for carrying the payload to the desktop. Roddy says that ATM can support longer
distances than Gigabit Ethernet. In situations where two sites are connected by fiber, ATM is
the better choice.
87200333.book Page 137 Wednesday, August 22, 2001 2:18 PM