cisco c language certification

cisco c language certification.1. there is a failure in network zFigure 19.3 The LSA update processEach LSA message has a type, and this book only describes the following three types used in a single region..1 Type LSA (Router LSA): generated by the router for each link in the current region and flooded only in the current region. The link ID of this LSA is the router IDO of the router that generated the LSA.2 Class LSA (Network LSA): generated by the DR and describes the router connected to the current segment, sent within the region to which the segment belongs. The link ID is the interface IP address of the specified router..5 Class LSA (External LSA): The Autonomous System External LSA is generated by the Autonomous System Border Router (ASBR) and contains routes to networks external to the current AS. The link ID is the network number advertised in such an LSA.In summary, the first two LSAs represent links in the current area, while the last LSA represents links in other autonomous systems. These LSAs are added to a local database of routing devices. There are other types of LSAs, but they are beyond the scope of this book.The advantage of the single-area design for the trial points is that it reduces the number of LSA types used by OSPF and does not require OSPF virtual links. When creating a routing table based on link state information, OSPF routers can add up to 16 paths to the routing table that will travel to the same destination network. The only restriction is that the cumulative overhead of these paths must be the same.Bidirectional state indicates that two OSPF routers have become neighbors. Full adjacency status indicates that the routers have shared link state information. To create and maintain the OSPF database, Hello messages (establishing adjacency) and LSA messages (sharing routing information) are used.Authentication H Tag 19.03