Answer the following questions for the network in Figure 1, assuming the valley-free export-all routing policy....
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Answer the following questions for the network in Figure 1, assuming the valley-free export-all routing policy. AS 2 AS 3 AS 7 AS 4 AS 8 AS 1 AS 5 AS 666 1.2.4/22 1.2.48/20 Figure 1: Network and relationships. AS 7 and AS 8 announce the prefixes listed below them. 1. What would be the routing table at AS 2? 2. How can AS 666 attract traffic from AS 2 to IP 1.2.4.1? Show the relevant announcement (s) sent by 666, the relevant announcements received by AS 2, and the resulting path of IP packets. 3. Repeat for IP 1.2.6.1. 4. Assume all ASes adopt ROV. Show a (single) ROA that prevents AS 666 from attracting traffic from AS 2 to IP 1.2.6.1. Specify the MAx-Len field of the ROA. 5. (Challenging) Assume now that ROV is only adopted by ASes 1-3. Repeat item 2. Answer the following questions for the network in Figure 1, assuming the valley-free export-all routing policy. AS 2 AS 3 AS 7 AS 4 AS 8 AS 1 AS 5 AS 666 1.2.4/22 1.2.48/20 Figure 1: Network and relationships. AS 7 and AS 8 announce the prefixes listed below them. 1. What would be the routing table at AS 2? 2. How can AS 666 attract traffic from AS 2 to IP 1.2.4.1? Show the relevant announcement (s) sent by 666, the relevant announcements received by AS 2, and the resulting path of IP packets. 3. Repeat for IP 1.2.6.1. 4. Assume all ASes adopt ROV. Show a (single) ROA that prevents AS 666 from attracting traffic from AS 2 to IP 1.2.6.1. Specify the MAx-Len field of the ROA. 5. (Challenging) Assume now that ROV is only adopted by ASes 1-3. Repeat item 2.
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Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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