300-440 Question 23
Single answerA network engineer is troubleshooting an issue where OSPF routes are not being redistributed into the EIGRP domain as expected. Upon reviewing the configuration, they notice the following commands on the router performing the redistribution:
router ospf 1 redistribute eigrp 100 subnets ! router eigrp 100 redistribute ospf 1
What could be the cause of the issue?
- A
The 'redistribute ospf 1' command is missing the 'metric' parameter in the EIGRP configuration.
- B
The 'subnets' keyword is missing in the 'redistribute ospf 1' command under the EIGRP configuration.
- C
The OSPF process ID does not match between the two routing protocols.
- D
EIGRP and OSPF cannot redistribute routes between each other directly.
Show answer and explanation
Correct answer: A
Explanation
When redistributing routes into EIGRP, a metric must be specified because EIGRP relies on metrics to determine route preference. Without a metric, the router cannot assign a value to the redistributed routes, and they will not appear in the EIGRP topology table. The network engineer should add a 'metric' parameter to the 'redistribute ospf 1' command under the EIGRP configuration to resolve the issue.
- A. Correct.
Correct. EIGRP requires a metric to be defined when redistributing routes from another protocol, such as OSPF. Without a defined metric, the redistribution will not work.
- B. Incorrect.
Incorrect. The 'subnets' keyword is not required in EIGRP redistribution commands as it is in OSPF. This is not the cause of the issue.
- C. Incorrect.
Incorrect. The OSPF process ID is local to the router and does not need to match between the two routing protocols for redistribution to work.
- D. Incorrect.
Incorrect. It is possible to redistribute routes between EIGRP and OSPF directly, provided the correct configuration is in place.