104 Chapter 3: Switched/Campus LAN Solutions
The folks at RouteitRight are having a discussion about WeServeData. Billy Broadcast has
talked to the CEO of WeServeData, Herb Format, who has articulated a five-year business plan
to expand into data warehousing.
Herb has identified the following business requirements for WeServeData:
·
Increase service subscribers by 15 percent each year
·
Reduce or trim network operating cost
·
Provide users with quality service by maximizing network performance
Herb will make the business upgrade only when he believes his customers have confidence in
WeServeData's ability to deliver services with the current technology. Roddy suggests that a
traffic analysis be performed on the network to determine the cause of the bottlenecks. In
addition, Roddy mentioned that a simulator might be used to determine latency, throughput, and
packet loss on the network. Millie recommends an inventory of the applications to determine
if the software is working properly. Peter thinks that the shared hubs should be replaced with
LAN switches.
1
What requirements must you take into account when redesigning the network
infrastructure for peak performance?
2
What is an advantage of the recommended change?
3
What changes could be made to ensure reliability and redundancy?
4
How can WeServeData address potential problems in the future?
Scenario 2
RouteitRight has been asked to review a design plan submitted by WeServeData for a client.
WeServeData has contracted with Hook Me Up, a network cable installation company, to install
network cable throughout its LAN. After a discussion, Hook Me Up has decided to implement
10BaseT Category 5 UTP wire for Hook Me Up's network.
1
Are there areas where the length exceeds the UTP cable length requirements?
2
In the areas where the length is OK, what other factors might determine the selection of a
cable?
Use the following table to help determine the distances between locations and the length of
cable required to reach between them.
Location
Distance
Location
Distance
1 to 2
50 feet
Hub to 1
400 feet
2 to 3
100 feet
Hub to 2
625 feet
3 to 4
150 feet
Hub to 3
800 feet
4 to 5
50 feet
Hub to 4
720 feet
continues
87200333.book Page 104 Wednesday, August 22, 2001 2:18 PM