3 the router examines child routes the subnet routes

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3. The router examines child routes (the subnet routes) of the parent route for a best match. 4. If there is a match with a level 2 child route, that subnet is used to forward the packet. 5. If there is not a match with any of the level 2 child routes, proceed to the next step. 6. The router continues searching level 1 supernet routes in the routing table for a match, including the default route, if there is one. 7. If there is now a lesser match with a level 1 supernet or default routes, the router uses that route to forward the packet. 8. If there is not a match with any route in the routing table, the router drops the packet. Best Route = Longest Match   3.3.4 Analyze an IPv6 Routing Table IPv6 Routing Table Entries Components of the IPv6 routing table are very similar to the IPv4 routing table (directly connected interfaces, static routes, and dynamically learned routes). IPv6 is classless by design, all routes are effectively level 1 ultimate routes. There is no level 1 parent of level 2 child routes. Directly Connected Entries
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Remote IPv6 Network Entries  
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3.4 Summary Dynamic routing protocols: Used by routers to automatically learn about remote networks from other routers. Purpose includes: discovery of remote networks, maintaining up-to- date routing information, choosing the best path to destination networks, and ability to find a new best path if the current path is no longer available. Best choice for large networks but static routing is better for stub networks. Function to inform other routers about changes. Responsible for discovering remote networks, as well as maintaining accurate network information. Upon a change in the topology routing protocols propagate that information throughout the routing domain. Convergence: The process of bringing all routing tables to a state of consistency, where all of the routers in the same routing domain, or area, have complete and accurate information about the network. Some routing protocols converge faster than others.
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  • Summer '17
  • Miss Ngcobo
  • Classless Inter-Domain Routing

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