>Hi guys,
>
>I am confused between the LSA and LSU , could someone clairfy the difference
>between them. Are they interchangable ?
>
>Thanx
>
>
>
You're confused because this is really confusing! LSU and LSAck
(usually the way the LSAck is written) are packets. LSA's are data
structures carried _in_ packets.
OSPF Packet type
1 2 3 4 5
Hello Database Descr. LS Request LS Ack LS Update
| | | |
+----------------+----------------+-----------+
Types 2-5 contain
Link State Advertisements (LSA)
LSA-1: Router
LSA-2: Specific prefix
LSA-3: Summary prefix
LSA-4: ASBR
LSA-5: External prefix
LSA-6: Multicast*
LSA-7: NSSA external
LSA-8: Database overflow*
LSA-9: Opaque
* Not used by Cisco
** New type, will be used by traffic engineering
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