Time-To-Live For Received Information - Lenovo CN4093 Application Manual

Time-to-Live for Received Information

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CN4093 Application Guide for N/OS 8.3
Each remote device LLDP packet includes an expiration time. If the switch port
does not receive an LLDP update from the remote device before the time-to-live
clock expires, the switch will consider the remote information to be invalid, and
will remove all associated information from the MIB.
Remote devices can also intentionally set their LLDP time-to-live to 0, indicating to
the switch that the LLDP information is invalid and should be immediately
removed.