Review Questions


1.

What messages (by name and type number) does OSPF use for database synchronization?

2.

What is the purpose of the I and M flags in the OSPF Database Description message?

3.

In what OSPF entities is the Options field found?

4.

What does the E bit of the OSPF Options field signify?

5.

What is the purpose of the OSPF neighbor data structure? What information is stored there?

6.

What is the purpose of the OSPF Link State Transmission list?

7.

What is the purpose of the Link State Request list?

8.

Before a database exchange, how does OSPF determine the Master and the Slave?

9.

What functions does the Master control during the database exchange?

10.

What are the eight OSPF neighbor states, and what does each indicate?

11.

On a broadcast link, what state normally exists between two DROthers?

12.

In Figure 6.9, does the router from which the log entries were taken become the DR or the BDR?

13.

Referring to the information in Figures 6.9 and 6.10, which router is the master and which is the slave for the database synchronization?

14.

What PDUs does IS-IS use for database synchronization?

15.

How is the receipt of an LSP acknowledged on a point-to-point link?

16.

How is the receipt of an LSP acknowledged on a broadcast link?

17.

How does a router on a broadcast link know that it needs a copy of an LSP? How does it request that LSP?

18.

In Figure 6.18, what is the AID of the router from which the log entries are taken? What is the AID of its neighbor?

19.

Are the routers in Figures 6.18 and 6.19 L1 Only, L2 Only, or Both?




OSPF and IS-IS(c) Choosing an IGP for Large-Scale Networks
OSPF and IS-IS: Choosing an IGP for Large-Scale Networks: Choosing an IGP for Large-Scale Networks
ISBN: 0321168798
EAN: 2147483647
Year: 2006
Pages: 111
Authors: Jeff Doyle

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