Comprehensive Application of Dynamic Routing Protocol in Network Communication

Source: Internet
Author: User

The Network is a complex system, and many technologies exist together, and each technology follows a protocol. Dynamic Routing Protocols play an important role in network communication. Interconnect Networks use routes to send data from one network to another.

In computer networks, the network ing between Online mobile groups and data transmission is completed dynamically using algorithms and protocols. These algorithms and protocols are what we call the Dynamic Routing Protocol ), dynamic Routing Protocol is the main method used by routers in network layer forwarding groups. Another way to forward packets between networks is Static Routing Protocol. The Administrator manually adds routes to the routing table. Here we mainly discuss several dynamic routing protocols.

Computer networks is a complex system with many technologies, and each technology plays an irreplaceable role like other technologies. Many international organizations and companies have set network standards independently and are not fully compatible with each other. Many enterprises have also launched a variety of products, network services and network protocols that use unconventional network technologies. Computer networks are becoming more and more complex. The reason is that there are a variety of network technologies and various network protocols used to connect two or more networks, this leads to multiple possible connection methods between networks. For example, CISCO routers have self-developed dynamic routing protocols IGRP and VPN. When the layer-3 routing protocol is used for PACKET routing, the destination router must be a CISCO router and use the IGRP or OSPF dynamic routing protocol. Otherwise, the router cannot communicate with the destination host, because IGRP and OSPF are CISCO proprietary routing protocols.

Routing protocol Routing Protocols): This protocol is used to establish and maintain a route table and forward data packets based on the Optimal Path to the Data Packet Destination. For example, r1_1, IGRP, and OSPF. Routed protocols: the selected routing protocol is used by the final node to encapsulate the data and network-layer address allocation information in the data packet, the purpose is that it can relay through an interconnected network. Both AppleTalk, IP, and IPX have selected dynamic routing protocols. Note: When a protocol does not support network-layer addresses, it is not a routing protocol.

The router uses the routing protocol (routing protocols) to establish and maintain the route table and forward data packets according to the optimal path to the Data Packet Destination. The routing protocol allows the router to understand the status of the network that is not directly connected and to communicate with other routers to understand the network they are concerned about. This communication continues, so that the information in the route selection table can be updated at any time when the communication network changes.

The vector router regularly sends the entire routing table to the adjacent routers ). Establish a route selection information table based on the information received by the neighboring router. Regardless of the type of routing selection algorithm used, all routers on the interconnect network need time to update the changes in their routing selection table. This process is called convergence ). The link status routing protocol is used to map the topology of the Interconnect Network. It is a routing selection protocol that is more complex than distance vector, currently, the most popular dynamic routing protocol is a link Status Protocol: OSPF. OSPF is becoming more popular because of the emergence of Multi-Protocol Label Switching MPLS.

The link status Router does not broadcast all information contained in their route tables. The link status routing protocol only sends information about the modified routes. The link status router sends a call message to its neighbor, which is called the link status notification (LSA ). Then, the neighbor copies the LSA to their routing selection table and transmits the information to the remaining part of the network. This process is called flooding ). The link status dynamic routing protocol uses a method called cost (cost) instead of hop ). Is the cost automatically or manually assigned ?? The selection cycle cannot be formed. There are 2nd advantages. Aggregation is very fast in the Link State interconnection network. These advantages release vro resources because the processing capability and bandwidth consumption for poor routing information are very small.

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