ccna 3 v.50 capitulo 5
TRANSCRIPT
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CCNA 3 Capther 5 *Adjustment and resolution of problems of OSPF unique area
Jorge Aníbal Quezada Ulibarri
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¿Que es OSPF?•OSPF (Camino Más Corto Primero) es un
protocolo de enrutamiento dinámico de estado de enlace que utiliza el Algoritmo de Dijkstra (Edsger Wybe Dijkstra)para elegir la mejor ruta posible.
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Comparación entre Switching & Routing
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Routing estático
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Protocolo de routing dinámico
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OFPS (Open Shortes Path First)
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Elección DR & BDR• En redes con difusión se lleva a cabo la elección de DR y
BDRLos routers de un entorno multiacceso, como un entorno ethernet, deben elegir un Router Designado (DR) y un Router Designado de Reserva (BDR) para que representen a la red. Un DR lleva a cabo tareas de envió y sincronización. El BDR solo actuara si el DR falla. Cada router debe establecer una adyacencia con el DR y el BDR.Elección de un DR y un BDR una topología Multiacceso con difusión• El router con el valor de prioridad más alta es el Router Designado DR.
• • El router con el segundo valor es el router designado de reserva BDR.
• • El valor predeterminado de la prioridad OSPF de la interfaz es 1. Un router con prioridad 0 no es elegible. En caso de empate se usa el ID de router.
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Topología de OSPF
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Verificación del OSPF área única
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Verificación de la información
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Verificación de Algoritmo + ID OFPS
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Verificación de la interfaz
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Visualización de las interfaces
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OSPF en Redes de acceso múltiple
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•R1
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•R2
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•R3
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Propagación de Rutas predeterminadas
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Verificación de las interfaces
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Modificación de los intervalos de OSPFv3
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Seguridad
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Resolución de problemas y Ajuste
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Componentes de la resolución
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Comandos:•Verificación de config. :•>>Show ip protocols•Ver parámetros:•>>Show ip ospf •Ver los vecinos adyacentes:•>>show ip ospf neighbor•Ver la tabal de rutas:•>> show ip route ospf•Ver la config. De interfaz•>> show ip ospf interface serial
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OSPF v2
•A todos los comandos agregamos ipv6
•Show ipv6 protocols
OSPF v3
•Show runnig-config | section router ospf
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Fin …•Gracias por su atención…