The ipv6 nd auto-detect enable command enables the auto-detection of ND entries.
The undo ipv6 nd auto-detect enable command disables the auto-detection of ND entries.
By default, the auto-detection function is enabled for ND entries.
Usage Scenario
To improve network reliability, you can run the ipv6 nd auto-detect enable command to enable the auto-detection of ND entries so that the system can send Neighbor Solicitation (NS) messages to probe whether its neighbors are reachable before aging ND entries.
Configuration Impact
If the system receives a Neighbor Advertisement (NA) message from a neighbor responding to the sent NS message, the system updates the aging time of the ND entries. If the system does not receive any NA message, the ND entries automatically age.
You are recommended to keep the auto-detection of ND entries enabled.Precautions
If the auto-detection of ND entries is not enabled, the system directly deletes ND entries when the aging time of ND entries expires or the system no longer probes the reachability of its neighbors after the aging time of the passively established ND entries expires.