Chapter 9: Advanced OSPF

Question 1

ARB

Answer 1

Area Border Router, a router that connects an OSPF area to Area 0(the backbone)

Question 2

Backbone Area

Answer 2

The OSPF area 0, which connects to all other OSPF areas. The backbone area is the only area that should provide connectivity between all other OSPF areas.

Question 3

Discontiguous Area

Answer 3

An OSPF network where Area 0 is not contiguous and generally results in routes not being advertised pervasively through the OSPF routing domain

Question 4

Interarea Route

Answer 4

An OSPF route learned from an ABR from another area. These routes are built based on type 3 LSAs

Question 5

Intra-area route

Answer 5

An OSPF route learned from a router within the same area. These routes are built based on Type 1 and type 2 LSAs

Question 6

Router LSA

Answer 6

A type 1 LSA that is a fundamental building block representing an OSPF enabled interface. Type 1 LSAs remain within the OSPF area of origination

Question 7

Summary LSA

Answer 7

A type 3 LSA that contains the routes learned from another area. Type 3 LSAs are generated on ABRs