The following limitations apply to BFD in this release:
BGP, OSPF (Open Shortest Path First), MPLS, OTM, and static routes act as BFD
clients.
The echo function is not supported.
Hardware assist BFD is supported only on standalone X460-G2, X465, X590, and X695
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.
