Alpha route packet transmission link

Once the router of the Alpha route data packet transmission link establishes an adjacent relationship, it can create a link status data packet, which contains the link status information related to the link, including the link type, IP address, subnet mask, and overhead, this article describes the data packet transmission characteristics of the Alpha router when creating a link. If you are interested, you can pay attention to the NetGear router settings. Www.2cto.com
1. The transmission speed of a link depends on the hardware conditions of the link. Therefore, the quality of a router directly determines the link quality, however, we can use and configure multiple regions to reduce the link status database. By dividing multiple regions, we can also limit the number of link status information flood in the routing domain and send it to the required router. 2. Compared with the distance vector routing protocol, the link status routing protocol usually requires more memory, CPU computing workload, and bandwidth. Compared with the distance vector routing protocol, the link status routing protocol may also require more CPU operations. Compared with the same distance vector algorithm, the SPF algorithm requires more CPU time, because the link status Routing Protocol creates a complete topology.
3. Packet flooding in the link status will negatively affect the available bandwidth of the network. This should only occur during the initial startup of the vro, but it may also cause problems in the unstable network, each router floods its link status information to all other link status routers in the routing area. Once the router receives the LSP from the adjacent router, immediately sends the LSP from all interfaces except the interfaces that receive the LSP. 4. When the topology changes, including link connection or disconnection, or adjacent link establishment or breakdown, the LSP also contains other information except link status information, to help manage the flood process. Each vro uses this information to determine whether the LSP has been received from another vro and whether the LSP has any update information not found in the link information database. This process allows the router to retain only the latest information in its link status database. 5. After each vro uses the link state flooding process to spread its own LSP, each vro will have the LSP from all vrouters in the entire routing area, these LSP are stored in the link status database. Each router in the routing area can use the SPF algorithm to build the SPF tree you have learned before. With the complete link status database, now you can use the database and SPF algorithm to calculate the preferred path to each network. 6. The link status Routing Protocol creates a topology of the network structure, and the link status routing protocol exchanges link status information. Therefore, the SPF algorithm can build an SPF tree for the network, each router can independently determine the shortest path to each network. After receiving a link status packet, the link status routing protocol immediately floods the LSP from all interfaces except the interfaces that receive the LSP.
Note: The Link Status routing protocol sends an LSP only when the topology changes. This LSP only contains information related to the affected link. The link status routing protocol does not send updates on a regular basis. The link status routing protocol uses the regional principle .. A hierarchical network structure is formed in multiple regions, which facilitates route aggregation and isolates Routing Problems in one region.