A network engineer suspects that OSPFv3 routers are not forming neighbor adjacencies because there are interface timer mismatches. Which two commands can be issued on the interface of each OSFPv3 router to resolve all timer mismatches? (Choose two.)

A network engineer suspects that OSPFv3 routers are not forming neighbor adjacencies because there are interface timer mismatches. Which two commands can be issued on the interface of each OSFPv3 router to resolve all timer mismatches? (Choose two.)

• no ipv6 ospf dead-interval
• ip ospf hello-interval 10
• no ipv6 router ospf 10
• no ipv6 ospf cost 10
• no ipv6 ospf hello-interval
• ip ospf dead-interval 40

Explanation: The no ipv6 ospf hello-interval and no ipv6 ospf dead-interval commands issued on each OSPFv3 interface will reset the intervals to the respective default periods. This ensures that the timers on all routers now match and, providing other appropriate configurations are correct, the routers will form adjacencies. The ip ospf hello-interval 10 and ip ospf dead-interval 40 commands are OPSFv2 commands that are used for IPv4 routing. If the ipv6 ospf hello-interval and ipv6 ospf dead-interval commands are used, then the interval has to be specified in seconds. The parameter default is not valid in these commands.

Exam with this question: CCNA 3 (v5.0.3 + v6.0) Chapter 10 Exam Answers
Exam with this question: CCNA 3 v6 Chapter 10: Check Your Understanding