The value of vRtrLdpAdjInitBackoff specifies the initial
backoff time. After a LDP session setup has failed, the
value of vRtrLdpAdjInitBackoff is the time interval, in
seconds, that the LDP entity waits before attempting to
setup the session again. This interval is the backoff
interval. This variable indicates the initial value for
backoff interval when the LDP session startup first fails.
Thereafter, if session startup fails again the backoff
interval increases exponentially.