Limitations

The following limitations apply to BFD in this release:

  • Direct connection (single hop) networks only are supported.

  • BGP (Border Gateway Protocol), OSPF (Open Shortest Path First), MPLS (Multiprotocol Label Switching), OTM, and static routes act as BFD clients.

  • The echo function is not supported.

  • Hardware assist BFD is supported only on standalone X460-G2, X870, and X690 series switches.

  • 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.