quote of the day... ospf packet types and lsa's...

from rfc2328...

from the horse's mouth... thank john t moy...

type 3 summary-lsa's describe routes to networks... type 4 summary lsa's describe routes to asbr's...

that is a huge distinction...

type 3 summary-lsa's describe routes to networks... type 4 summary lsa's describe routes to asbr's...

The OSPF packet types are:

OSPF uses Hello packets to discover and maintain neighbor relationships. Database Description (DDP) and Link State Request packets are used in the forming of adjacencies. OSPF's reliable update mechanism is implemented by Link State Update and Link State Ack packets.

 Each Link State Update packet carries a set of new Link State Advertisements (LSAs) one hop further away from their point of origination. The different types  of OSPF LSAs are listed below: