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Routing TCP/IP, Volume I (CCIE Professional Development) by Jeff Doyle

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Troubleshooting Exercises

1: In the first offset list example, the access list in Barney is changed from
									access-list 5 permit 10.33.32.0 0.0.0.0
								

to

									access-list 5 deny 10.33.32.0 0.0.0.0
									access-list 5 permit any
								

What is the result?

2: Figure 5.20 shows an internetwork in which the IP address masks on one router have been misconfigured. Figures 5.21 through 5.23 show the routing tables of RTA, RTB, and RTC, respectively. Based on what you know about the way RIP advertises and receives updates, explain each entry in RTB's routing table. Explain why RTB's entry for subnet 172.16.26.0 indicates a 32-bit mask. If any entries are missing in any of the routing tables, explain why.
Figure 5.20. The internetwork for Troubleshooting Exercises 2 and ...

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