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

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Troubleshooting Exercises

1: OSPF is not working between two routers. When debugging is turned on, the messages shown in Figure 9.107 are received every 10 seconds. What is the problem?
Figure 9.107. The debug messages for Troubleshooting Exercise 1.

2: Explain what problem is indicated by the debug messages in Figure 9.108.
Figure 9.108. The debug messages for Troubleshooting Exercise 2.

3: Explain what problem is indicated by the error messages in Figure 9.109.
Figure 9.109. The error messages for Troubleshooting Exercise 3.

4: ...

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