300-410 Question 24
Single answerA network engineer is troubleshooting a redistribution issue between OSPF and EIGRP. The OSPF routes are not appearing in the EIGRP routing table. Upon reviewing the configuration, the engineer notices the following configuration on the router:
router eigrp 100 redistribute ospf 1 metric 10000 100 255 1 1500 ! router ospf 1 redistribute eigrp 100 subnets
What is the most likely cause of the issue?
- A
The 'metric' parameter in the EIGRP redistribution command is incorrectly configured.
- B
The OSPF process ID does not match between the redistribution commands.
- C
The 'subnets' keyword is missing in the EIGRP redistribution command.
- D
The EIGRP Autonomous System (AS) number in the redistribution commands does not match.
Show answer and explanation
Correct answer: A
Explanation
When redistributing routes into EIGRP, the 'metric' parameter is mandatory, as EIGRP requires a seed metric for routes being redistributed. Without specifying this metric, EIGRP will not accept the redistributed OSPF routes. In this scenario, the configuration included a 'metric' parameter, but it may not be appropriate for the network. The other options are not relevant to the issue described in this scenario.
- A. Correct.
The 'metric' parameter in the EIGRP redistribution command must be explicitly configured when redistributing into EIGRP. Without a proper metric, the routes will not be redistributed into EIGRP, and this is the most likely issue in this scenario.
- B. Incorrect.
The OSPF process ID does not need to match between the redistribution commands for proper operation. Redistribution operates independently of process ID matching.
- C. Incorrect.
The 'subnets' keyword is not required in the EIGRP redistribution command, but it is critical in the OSPF redistribution command. In this case, the 'subnets' keyword is already correctly included in the OSPF redistribution command.
- D. Incorrect.
The EIGRP Autonomous System (AS) number does not need to match between redistribution commands. It is only necessary that the AS number matches within the EIGRP configuration itself.