Link-State Advertisements

Link-State Advertisements
Recall that a router’s link-state database is made up of link-state advertisements (LSAs). However,
just as we had multiple OSPF router categories to consider, we also have multiple types of
LSAs to consider. While the importance of LSA classification may not be immediately apparent,
you will see its application when we examine the various types of OSPF areas. Table 6.1 lists all
of the possible types of LSAs.