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.
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.
