Review Questions

1:Why are loopback interfaces advertised as /32 in OSPF?
2:What are the route types used with OSPF?
3:Why do I receive the “cannot allocate router id” error message?
4:Why do I receive the “unknown routing protocol” error message?
5:What do the states DR, BDR, and DROTHER mean in the show ip ospf interface command output?
6:Which router is responsible for generating the network LSA?
7:Why do neighbors show a state of 2-WAY/DROTHER when issuing the show ip ospf neighbor command?
8:Why is it difficult to identify the DR or BDR on a serial link?

Get CCIE Practical Studies: Security (CCIE Self-Study) now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.