Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) — Question 15

A network engineer must enable the helper router to terminate the OSPF graceful restart process if it detects any changes in the LSA.
Which command enables this feature?

Answer options

• A. nsf ietf helper disable
• B. nsf cisco helper disable
• C. nsf ietf helper strict-lsa-checking
• D. nsf cisco enforce global

Correct answer: C

Explanation

The correct command 'nsf ietf helper strict-lsa-checking' enables the helper router to properly manage OSPF graceful restarts by ensuring LSA changes are accounted for. The other options either disable the helper function or do not apply strict checks needed for LSA changes, thus failing to meet the requirement.