Cisco Certified Network Associate (CCNA) Practice Exam

What metric is used when redistributing from OSPF to EIGRP in a router configuration?

1. 1544

2. 50000

3. 3

4. 2000

The correct answer is: 50000

When redistributing routes from OSPF to EIGRP, the default metric used is 20,000, but in the context of defining the metric when redistributing, the value commonly referenced is 50,000. This is significant because EIGRP requires a metric that encompasses several factors including bandwidth, delay, reliability, load, and MTU. When redistributing external routes into EIGRP, it's essential to provide a consistent and valid metric so that EIGRP can properly incorporate the OSPF routes into its routing decisions. In this case, the value of 50,000 serves as a base default reference for the bandwidth component of the EIGRP metric when the system is not receiving specific metrics from the redistributed routes. Since a proper metric ensures EIGRP can effectively manage and prioritize routing paths, using 50,000 helps maintain a reliable routing performance during the redistribution process. In contexts like this where routes are being redistributed, the specific numeric value plays a critical role, and understanding why the choice of 50,000 is favored as a default helps clarify the redistribution mechanics involved between different routing protocols.