4A0-101 – Alcatel-Lucent Interior Routing Protocols

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  When a router receives updates from its neighbors, it adds them to its link state database, performs an SPF computation, and sends the results to its neighbors.

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  An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be seen in the route table.

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  Each router constructs its own link state database with updates received from neighbors.

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  An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be offered to the route table manager.
  
  

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  Router R6 will have a single Router LSA that describes the summary prefix.

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  Router R6 will have three Router LSAs - one to describe each loopback prefix.

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  Router R6 will have a single Inter-Area Prefix LSA to describe the summary prefix.

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  Router R6 will have three Inter-Area Prefix LSAs - one to describe each loopback prefix.

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  Router R6 will not have any LSAs to describe the loopback prefix or the summarized prefix.
  
  

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  When a Link State Update is received in response to a Link State Request

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  When a router receives a Hello packet from a neighbor that contains its router id in the neighbor list

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  When OSPF neighbors exchange Database Descriptor packets

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  When a Link State Acknowledgement is received in response to a Link State Update