Industrial Wireless Router Routing Protocol Wants To Achieve Its Goals

You can imagine that if each industrial wireless router stores the information needed for each destination point that can be reached from its nodes, it is likely that the industrial router will accumulate a huge routing table. Due to physical (cpu, memory) limitations, industrial-grade routers are difficult and sometimes impossible to handle a huge routing table. Therefore, without affecting the ability to reach each destination, we want to minimize the routing table. For example, if an industrial wireless router is connected to the Internet through a DS1 link connected to another industrial 4g router, then this industrial-grade 4g router can store the information of all nodes on the Internet, or it can also connect all DS1 serial links Non-local information outside is not stored. In other words, the industrial 3G router does not store any information about the non-local network destinations that data "packets" are looking for in its routing table, but sends these "packets" to the industrial 3G at the other end of the serial link. The router provides the necessary information by this whole network router. We often call the industrial full Netcom router at the other end of the serial DS1 link as we said in this example "Gateway of Last Resort". This simple trick can save 30 orders of entry for the routing table. Routing information does not need to be exchanged between industrial grade Netcom routers too frequently. Usually the agitator in the routing table puts a lot of unnecessary pressure on the poor memory and CPU that any full Netcom industrial router can provide. The replication of information should not affect the forwarding operation of the router. Although it is not necessary to refresh the routing table every millisecond, of course it is not possible to refresh the routing table every other week. An important goal of routing is to provide hosts with a routing table that accurately reflects the current network status.

The most important operation of the whole Netcom industrial-grade router is to send the received packet to the correct path. Unrouted packets may cause data loss. The inconsistency in the routing table will cause a routing loop and cause a certain packet to be sent cyclically between two adjacent interfaces.

People very much hope that all the Netcom routers can have fast convergence. Convergence can be informally defined as a unit that measures the speed at which all industrial LTE routers obtain a consistent network view. It is expected that there will be a minimum convergence time, because each industrial-grade LTE router on the network can accurately reflect the current network topology even when the network topology (ie, the network view) is severely changed. When the network topology is changed, each industrial network-wide router must transmit data to help other industrial-level network-wide routers converge to the correct network view. But there is also a problem with rapid convergence when refreshing the routing table. If a link vibrates quickly (breaks a while and closes a while), it will generate a large number of installation and cancellation requests. This link will eventually exhaust the resources of each industrial TD-LTE router on the network because other industrial EVDO routers are forced to quickly install or remove this route. Therefore, even if fast convergence is the goal of routing protocols, it is not a panacea for all network problems.

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E-Lins is a leading provider of industrial 4g router, sim card wifi router 4g, 4G modem, dual sim 4g router and router LTE. The company prides itself on delivering the best equipment at highly competitive prices to its customers around the world.