After upgrading to 16.1 Junos code or higher, ISIS BFD configuration is shows it is deprecated.
When viewing the ISIS configuration after upgrading:
user@router> show configuration protocols isis reference-bandwidth 10g; interface all { point-to-point; bfd-liveness-detection { ## Warning: 'bfd-liveness-detection' is deprecated minimum-interval 3000; multiplier 3; } }
BFD still works, but this configuration may not be available in future releases.
Starting in 16.1R1, you can configure BFD for ISIS sessions based on address family. As a result of this change, you need to move the BFD configuration to family inet, family inet6, or both depending on your needs.
user@router> show configuration protocols isis reference-bandwidth 10g; interface all { point-to-point; family inet { bfd-liveness-detection { minimum-interval 3000; multiplier 3; } } family inet6 { bfd-liveness-detection { minimum-interval 3000; multiplier 3; } } }