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Routing Fundamentals for Cisco CCNA

7. Route Redistribution

Overview of configuring route redistribution on a Cisco router:

  1. 1. Enter global configuration mode by using the "configure terminal" command.

  2. 2. Enable route redistribution for a specific routing protocol by using the "router [routing protocol]" command. For example, "router eigrp 1" will enable EIGRP routing protocol on the router.

  3. 3. Configure route redistribution for a specific routing protocol by using the "redistribute [protocol to redistribute] [subcommand]" command. For example, "redistribute ospf 1 metric 10 100 255 1 1500" will redistribute OSPF routes into EIGRP with a metric of 10, a metric-type of 100, a metric-value of 255, and a tag value of 1.

  4. 4. Optionally, you can configure a route-map to filter the routes that will be redistributed. This is done by using the "route-map [route-map name] [permit/deny]" command.

  5. 5. Verify the route redistribution configuration and status using the "show ip protocols" or "show ip route" command.

  6. 6. Monitor and troubleshoot the route redistribution by using the "debug ip [routing protocol]" command.

Please note that the above steps are a general overview of how to configure route redistribution on a Cisco router running Cisco IOS.

8. Route redistribution between EIGRP and OSPF

Overview of how to configure route redistribution between EIGRP and OSPF on a Cisco router:

  1. 1. First, enable the appropriate routing protocols on the router by using the "router eigrp" and "router ospf" commands.

  2. 2. Next, configure the redistribution of routes by using the "redistribute [protocol]" command. For example, to redistribute EIGRP routes into OSPF, you would use the command "router ospf 1 redistribute eigrp [AS number] metric [metric value]".

  3. 3. Additionally, you can configure filters to control which routes are redistributed by using the "route-map" command. For example, you can use a route-map to only redistribute routes that meet certain criteria, such as a specific prefix or metric.

  4. 4. Finally, it is important to monitor the network and make sure that the redistribution is working as expected. You can use the "show ip route" command to view the routes that have been redistributed, and use the "debug" command to troubleshoot any issues.

Please note that the above steps are a general overview of how to configure route redistribution between EIGRP and OSPF, the specific command syntax and configuration may vary depending on the IOS version and the requirements of your network.

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