The value of tmnxMcLagConfigHoldOnNgbrFailure specifies how many
tmnxMcLagConfigKeepALiveIvl intervals the standby node will wait
for packets from the active node before assuming a redundant-neighbor
node failure.
This delay in switch-over operation is required to accommodate for
different factors influencing node failure detection rate, such as
IGP convergence, or HA switch-over times and to prevent that the
standby node takes actions prematurely.