ccna 200 301 syllabus meaning

ccna 200 301 syllabus meaning.. Hierarchical design: routers running link-state routing protocols have the concept of an area. Multiple areas can facilitate the aggregation of routes and confine some routing problems to one area. Area OSPF and IS-IS are discussed in the CCNP section. the CCNA section discusses only the configuration of individual area OSPFs.Link-state routing protocols have several disadvantages compared to distance vector routing protocols. more appropriately should say requirements... Memory requirements: routers running link-state routing protocols require more memory to hold the link-state database.. Processor requirements: routers running link-state routing protocols need to execute SPF to build network topology maps and require more powerful CPUs. . Bandwidth requirements: The flooding of a large number of link-state packets during network initialization can affect the available bandwidth of the network. In unstable networks, flooding of link-state packets can also affect the available bandwidth of the network.Many practices nowadays divide link-state routing protocols into smaller areas to reduce the size of the link-state database and limit the flooding of LSAs, thus reducing the memory, CPU, and bandwidth requirements°..8.2 OSPF Overview and Basic Configuration***This section describes OSPF terminology, packet formats, packet types, neighbor relationship establishment, DR and BDR elections, and metric value calculation.821 OSPF Features ...OSPF (OpenShortest PathFirst) is an open standard routing protocol that is widely supported by various network developers, including Cisco routers and switches, and is arguably the most widely used IGP routing protocol today. RIPvl and RIPv2 are slow to converge and are prone to routing loop problems in large and complex networks; IGRP, like RIPvl, is also a classful routing protocol that does not support VLSM and CIDR, and has the same disadvantages of distance vector routing protocols. EIGRP is an advanced distance vector routing protocol that supports VLSM and CIDR, converges quickly, and does not create routing loops, but it is a private protocol that can only be used on Cisco devices.OSPF is a link-state routing protocol that uses the SPF algorithm (also known as Dijkstra's algorithm) to exchange LSAs among all routers in the same area, construct LSDBs, and each router, with this router as the root, performs the SPF algorithm based on the LSDBs, generates an SPF tree, calculates the shortest path to each destination, and generates a routing table.As a link-state routing protocol, OSPF has the following characteristics.