Which option is not a parameter that must be matched for routers to become OSPF neighbors?

ITExamAnswers Editorial Team Last Updated: Jun 29, 2026

IT Exam Items Repository › Category: CCNP ENARSI v9 › Which option is not a parameter that must be matched for routers to become OSPF neighbors?

Which option is not a parameter that must be matched for routers to become OSPF neighbors?

OSPF cost
stub area flag
area ID
subnet ID and subnet mask
hello and dead interval

Explanation: While parameters such as Area ID, Hello/Dead timers, Subnet/Mask, and the Stub flag must match for an adjacency to form, OSPF cost is not a requirement for neighbor establishment. The cost is a local parameter used for SPF path selection calculations after the adjacency is already Full.

About The Author

ITExamAnswers Editorial Team

The ITExamAnswers Editorial Team is a dedicated group of certified IT professionals and network engineers. We rigorously review, verify, and update all exam materials to ensure you receive the most accurate and reliable resources for your certification journey.