Unanswered Question
Jun 16th, 2013

Dear all,

is there any difference between LSA and LSP in OSPF or these are the terms used interchangeably?                  



I have this problem too.
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InayathUlla Sharieff Sun, 06/16/2013 - 23:48


Easy way of saying is;

Lsa come under ospf and lsp's come under Is-Is link state pdu's.

link-state advertisement

(LSA) is a basic communication means of the OSPF routing protocol for the Internet Protocol (IP). It communicates the router's local routing topology to all other local routers in the same OSPF area. OSPF is designed for scalability, so some LSAs are not flooded out on all interfaces, but only on those that belong to the appropriate area. In this way detailed information can be kept localized, while summary information is flooded to the rest of the network

Link State Packet

(LSP) is a packet of information generated by a network router in a link state routing protocol that lists the router's neighbors. Link state packet can also be further defined as special datagrams that determine the names of and the cost or distance to any neighboring routers and associated networks. They are used to efficiently determine what the new neighbor is, if a link failure occurs, and the cost of changing a link if the need arises. LSPs are queued for transmission, and must time out at about the same time. They must be acknowledged, and can be distributed throughout the network, but cannot use the routing database.





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