The value of vRtrLdpGenTargKeepAliveTimeout specifies the time
interval, in seconds, that LDP waits before tearing down a session.
If no LDP messages are exchanged during this time interval, the LDP
session is torn down. Genly the value of
vRtrLdpGenTargKeepAliveTimeout is configured to be 3 times the
keepalive time (the time interval between successive LDP keepalive
messages).
This value is only applicable to targeted sessions and not to LDP
interfaces.