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Route poisoning is a method to prevent a r … Route poisoning is a method to prevent a router from sending packets through a route that has become invalid within computer networks. Distance-vector routing protocols in computer networks use route poisoning to indicate to other routers that a route is no longer reachable and should not be considered from their routing tables. Unlike the split horizon with poison reverse, route poisoning provides for sending updates with unreachable hop counts immediately to all the nodes in the network. When the protocol detects an invalid route, all of the routers in the network are informed that the bad route has an infinite (∞) route metric. This makes all nodes on the invalid route seem infinitely distant, preventing any of the routers from sending packets over the invalid route. Some distance-vector routing protocols, such as RIP, use a maximum hop count to determine how many routers the traffic must go through to reach the destination. Each route has a hop count number assigned to it which is incremented as the routing information is passed from router to router. A route is considered unreachable if the hop count exceeds the maximum allowed. Route poisoning is a method of quickly forgetting outdated routing information from other router's routing tables by changing its hop count to be unreachable (higher than the maximum number of hops allowed) and sending a routing update. In the case of RIP, the maximum hop count is 15, so to perform route poisoning on a route its hop count is changed to 16, deeming it unreachable, and a routing update is sent. If these updates are lost, some nodes in the network would not be informed that a route is invalid, so they could attempt to send packets over the bad route and cause a problem known as a routing loop. Therefore route poisoning is used in conjunction with holddowns to keep update messages from falsely reinstating the validity of a bad route. This prevents routing loops, improving the overall efficiency of the network.ing the overall efficiency of the network.
, El envenenamiento de ruta o «route poisoni … El envenenamiento de ruta o «route poisoning» se utiliza como un método práctico para evitar Routing Loops. El mismo es utilizado por los protocolos de enrutamiento.En este caso se menciona el envenenamiento de ruta para el protocolo por vector de distancia con clase rip. El envenenamiento utiliza la métrica máxima en este caso 16 para protocolo rip, para indicar que se trata de una ruta inalcanzable.Se interpretará como inalcanzable una métrica que esté especificada como valor máximo. También sirve para resolver de forma rápida la convergencia entre nodos, ya que no debe esperar el proceso de cuenta a "infinito", para descartar un paquete, sino que los dispositivos serán alertados sobre la ruta «envenenada» de destino inalcanzable. por ser de métrica 16. Ya sea por cambios en la topología o caída de interfaces, El envenenamiento de ruta resulta una práctica muy común que servirá para la coherencia de rutas mientras los dispositivos convergen.
* Datos: Q7371590dispositivos convergen.
* Datos: Q7371590
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El envenenamiento de ruta o «route poisoni … El envenenamiento de ruta o «route poisoning» se utiliza como un método práctico para evitar Routing Loops. El mismo es utilizado por los protocolos de enrutamiento.En este caso se menciona el envenenamiento de ruta para el protocolo por vector de distancia con clase rip. El envenenamiento utiliza la métrica máxima en este caso 16 para protocolo rip, para indicar que se trata de una ruta inalcanzable.Se interpretará como inalcanzable una métrica que esté especificada como valor máximo.
* Datos: Q7371590cada como valor máximo.
* Datos: Q7371590
, Route poisoning is a method to prevent a r … Route poisoning is a method to prevent a router from sending packets through a route that has become invalid within computer networks. Distance-vector routing protocols in computer networks use route poisoning to indicate to other routers that a route is no longer reachable and should not be considered from their routing tables. Unlike the split horizon with poison reverse, route poisoning provides for sending updates with unreachable hop counts immediately to all the nodes in the network.mediately to all the nodes in the network.
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Route poisoning
, Envenenamiento de ruta
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