3-2. Redo the analysis in Figure 3-12. Remove the link between Ogden and Seattle but add a link between Seattle and Dublin. On each link, what traffic capacity will be needed, and what leased line would you select for it? Use a traffic table to do the analysis.

Seattle needs to communicate at 1 Gbps with each other site. Honolulu and Dublin only need to communicate with each other at 1 Mbps. Ogden and Dublin need to communicate at 2 Gbps. Honolulu and Ogden need to communicate at 10 Gbps. How much traffic will each transmission link have to carry? The analysis in Figure 3-12shows how to calculate this. Ogden- Honolulu Seattle _ Ogden Dublin 1 Gbps 1 Gbps Gbps 1 Mbps 10 Gbps 2 Gbps 11001 Gbps Figure 3-12 A Four-Site Traffic Analysis The first step, again, is to draw a picture showing the sites and transmission lines. Figure 3-12shows this information at the top. Second, draw traffic requirements for each link between sites. The figure has also done that. Third, using the picture and no traffic table, find the total traffic that must flow over each link. Figure 3-12does this for the link between Honolulu and Seattle. Note that the traffic flowing over the Honolulu-Seattle Link includes 1 Gbps flowing between Honolulu and Seattle, 1 Mbps (0.001 Gbps) between Honolulu and Dublin, and 10 Gbps between Honolulu and Ogden. Therefore, the total traffic flowing over the Honolulu-Seattle Link is 11.001 Gbps. Traffic Requirement for Each Pair of Sites Transmission Link Honolulu-Seattle Seattle-Ogden Ogden-Dublin Honolulu-Seattle Gbps Honolulu-Ogden 10 Gbps 10 Gbps Honolulu-Dublin Seattle-Ogden Seattle-Dublin Ogden-Dublin Figure 3-13 Traffic Table for Figure 3-12 Seattle needs to communicate at 1 Gbps with each other site. Honolulu and Dublin only need to communicate with each other at 1 Mbps. Ogden and Dublin need to communicate at 2 Gbps. Honolulu and Ogden need to communicate at 10 Gbps. How much traffic will each transmission link have to carry? The analysis in Figure 3-12shows how to calculate this. Ogden- Honolulu Seattle _ Ogden Dublin 1 Gbps 1 Gbps Gbps 1 Mbps 10 Gbps 2 Gbps 11001 Gbps Figure 3-12 A Four-Site Traffic Analysis The first step, again, is to draw a picture showing the sites and transmission lines. Figure 3-12shows this information at the top. Second, draw traffic requirements for each link between sites. The figure has also done that. Third, using the picture and no traffic table, find the total traffic that must flow over each link. Figure 3-12does this for the link between Honolulu and Seattle. Note that the traffic flowing over the Honolulu-Seattle Link includes 1 Gbps flowing between Honolulu and Seattle, 1 Mbps (0.001 Gbps) between Honolulu and Dublin, and 10 Gbps between Honolulu and Ogden. Therefore, the total traffic flowing over the Honolulu-Seattle Link is 11.001 Gbps. Traffic Requirement for Each Pair of Sites Transmission Link Honolulu-Seattle Seattle-Ogden Ogden-Dublin Honolulu-Seattle Gbps Honolulu-Ogden 10 Gbps 10 Gbps Honolulu-Dublin Seattle-Ogden Seattle-Dublin Ogden-Dublin Figure 3-13 Traffic Table for Figure 3-12