OSPF LSA TYPES
		http://nityasworld.com
		Type	Description	Routing Table Symbol
		1	Router LSA. Advertises intra-area routes. Generated by each OSPF router. Flooded only within the area	O
		2	Network LSA. Advertises routers on a multi-access link. Generated by a DR. Flooded only within the area.	O
		3	Summary LSA. Advertises inter-area routes. Generated by an ABR. Flooded to adjacent areas.	O IA
		4	Summary LSA. Advertises the route to an ASBR. Generated by an ABR. Flooded to adjacent areas.	O IA
		5	External LSA. Advertises routes in another routing domain. Generated by an ASBR. Flooded to adjacent areas.	O E1—The metric increases as it is passed through the network
				O E2—The metric does not increase (default).
		6	Multicast LSA. Used in multicast OSPF operations
		7	Not-so-stubby area (NSSA) LSA. Advertises routes in another routing domain. Generated by an ASBR within a not-so-stubby area	O N1—The metric increases as it is passed through the
				O N2—The metric does not increase (default).
		8	External attributes LSA. Used in OSPF and BGP interworking.
		9, 10, 11	Opaque LSAs. Used for specific applications, such as OSPF and MPLS interworking.
		http://nityasworld.com