[CAUSE] The tmnxBfdOnLspSessNoTailResources notification is generated when a BFD on LSP session could not be established by the LSP's tail-end system because the system limit on the number of session tail ends has been reached. If TIMETRA-VRTR-MIB::vRtrLspBfdSession is 'enabled(1)', the system limit on the number of session tail ends is TIMETRA-VRTR-MIB::vRtrLspBfdMaxSessions. If TIMETRA-VRTR-MIB::vRtrLspBfdSession is 'disabled(2)', the system limit on the number of session tail ends is zero. This notification is throttled using the following mechanism. In the initial state (e.g. at CPM startup), when the first failure is detected, tmnxBfdOnLspSessNoTailResources is raised, and a ten minute timer is started. When the timer expires, 1. tmnxBfdOnLspSessNoTailResources is raised if one or more failures occurred in the ten minute interval, and 2. A ten minute timer is started (and the process repeats). Any change to TIMETRA-VRTR-MIB::vRtrLspBfdSession and/or TIMETRA-VRTR-MIB::vRtrLspBfdMaxSessions restarts the process at the initial state. [EFFECT] One or more BFD on LSP sessions could not be established. [RECOVERY] Change TIMETRA-VRTR-MIB::vRtrLspBfdSession to 'enabled(1)', or increase TIMETRA-VRTR-MIB::vRtrLspBfdMaxSessions, or change the network configuration to reduce the number of active BFD on LSP session tail ends.