Case Study 1 GHY Resources

Mr. Martin of GHY Resources is responsible for the company's network. He has invited you to a meeting to discuss some issues.

GHY Resources is a manufacturing company with its headquarters based in St. Louis. In the past 10 years, GHY has grown from 10 employees to more than 400. It now has a manufacturing site in Kansas City, and a new site is opening in Nashville, Tennessee, in three months. The manufacturing sites connect back to St. Louis via a 256 K circuit. Sales offices exist in more than seven cities throughout the United States. Each sales office connects back to the headquarters via a 56 K leased line. These leased lines run at more than 70 percent utilization at certain times during the day. The company currently uses a mix of routers from different vendors and wants to standardize on Cisco's if the price is right. The current routing protocol is RIPvl. Figure 1-5 shows the current topology of GHY Resources.

Novell NetWare fileservers are used throughout the company, with one server at each of the sales offices. Local offices have print servers also. The headquarters' local-area network consists of Ethernet using 10BaseT hubs. These Ethernet segments constantly run at about 45 percent utilization. There are around 10 segments connecting to a pair of Cisco 4000 routers. One of the network analysts mentioned that the protocol analyzer reported broadcast storms on some of the Ethernet segments.

Business applications run on an HP 3000 machine located on one of the segments at the headquarters. An HP 3000 is located at the manufacturing site. The manufacturing site has two NetWare file servers. Mr. Martin expects the new manufacturing site to have the same business applications. The LAN in Kansas City consists of three Ethernet segments with 30 stations each. Network utilization is at 35 percent on each segment.

Case Study #2: Pages Magazine, Inc. 23

Figure 1-5 GHYResources Logical Diagram

St Louis, MO

10Mbps Headquartei"s

Figure 1-5 GHYResources Logical Diagram

St Louis, MO

10Mbps Headquartei"s

Sites

Mr. Martin has mentioned that he is interested in Frame Relay as an alternative for his WAN links. He would like to upgrade his LANs as well. He has requested a LAN/WAN solution that would help reduce the utilization problems he is having on the network. He also would like a solution to reduce the SAP traffic on the network. In addition, he wants to find a way to conserve IP addresses on his network. Mr. Martin needs to get a proposal in one week to have his managers approve the money. The design needs to be installed before the new manufacturing site becomes operational.

Look for questions on the GHY Resources case study at the end of some of the book's chapters.

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