Feel free to correct.

Study Questions

  • The obvious first question involves the common LSA types and their function.  Can you list them?

Type-1 - Router - Lists each router their connected IP addresses Type-2 - Network - Lists all the transit, or multiaccess, networks Type-3 - Net Summary - Defines a  host route for interarea routes; this is from the ABR Type-4 - ASBR Summary - Defines a host route for an external (to OSPF) route; this is from an ASBR Type-5 - AS External - Lists the networks advertised into OSPF from external sources (redistribution) Type-7 - NSSA External - External routes injected into a not-so-stubby area