ccna 200 301 syllabus examples templates

ccna 200 301 syllabus examples templates.The purpose of the 5 types of packets. . data corresponding to OSPF packets: the specific content of each type of packet.8.2.4 OSPF Packet Types***The focus is on the classification of Hello packets and LSUs, and the following explains Hello packets in the context of basic configuration. OSPF has 5 different types of Link State Packets (Link_State_Packet, LSP), each of which has a specific purpose. These 5 types of packets are.1. Hello Hello packets are used to establish and maintain adjacency relationships between OSPF routers. The main purposes of the OSPF HeHo packets are: to discover OSPFneighbors, establish and maintain adjacencies; and select DR and BDRo in a multiple-access network What is a multiple-access network? is described later in OSPF Network Types.241 JOSPF flood link state announcements to other routers require an adjacency relationship before they can be established. The router sends Hello messages on all OSPF protocol-enabled interfaces to determine if there are other OSPF routers running on the same link. the Hello message is typically sent as a multicast with a multicast address of 224.0.0.5o The ability of neighboring routers to establish an adjacency depends on the OSPF Hello message. the OSPF header and Hello message The format of the OSPF header and Hello message is shown in Figure 8-2-3.Figure 8-2-3 Hello Message FormatCCNA candidates do not need to understand the format of the OSPF header and Hello message, but it is helpful to understand some of the key fields in the OSPF header and Hello message to enhance their understanding of OSPF. The OSPF header and Hello message contain the following fields.. Version: The version number of OSPF, currently OSPFv2. OSPFvl is an experimental version that is long deprecated, and OSPFv3 is for IPv6.