3 Comments on “Which router ID is correct for OSPFv3?”

1. rsk says:

   December 21, 2017 at 4:14 am

   rfc5340:
   The Router ID of 0.0.0.0 is reserved and SHOULD NOT be used.

   Correct answer is D

   
   
   
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2. ketan2809 says:

   April 5, 2019 at 1:52 pm

   If an IPv4 address exists when OSPFv3 is enabled on an interface, then that IPv4 address is used for the router ID. If more than one IPv4 address is available, a router ID is chosen using the same rules as for OSPF version 2.

   
   
   
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3. nil says:

   November 30, 2019 at 8:09 am

   You must configure a router-id in order for BGP and OSPF to function in a routing instance. Use the show route instance detail command to display the router-id value for a routing instance. If the router-id is 0.0.0.0, then the routing instance has no router-id.

   https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/router-id-edit-routing-options.html

   So as per that correct answer is “D”

   
   
   
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