When you enable BFD for multiple protocols on the same interface,
and the source IP address and destination IP address for the protocols
are also the same, the protocols share a single BFD session, thus
reducing both dataplane overhead (CPU) and traffic load on the interface.
If you configure different BFD profiles for these protocols, only
one BFD profile is used: the one that has the lowest
Desired
Minimum Tx Interval
. If the profiles have the same
Desired
Minimum Tx Interval
, the profile used by the first created
session takes effect. In the case where a static route and OSPF
share the same session, because a static session is created right
after a commit, while OSPF waits until an adjacency is up, the profile
of the static route takes effect.