Limitations

The following limitations apply to BFD in this release:

• BGP, OSPF, MPLS, OTM, and static routes act as BFD clients.
• The echo function is not supported.
• Hardware assist BFD is not supported Universal platforms.
• The number of sessions handled by BFD at minimal timers (less than 100ms) varies depending on the platform type, the implementation type (H/w or S/w), and the processing load (which is influenced by other protocols being enabled or other system conditions such as software forwarding).
• The following scaling limits apply to BFD hardware assist:
  • Maximum 900 sessions if PTP feature not enabled.
  • Maximum 425 sessions with PTP enabled.
  • Maximum of 256 sessions with 3 ms transmit interval.