552 CN4093 Application Guide for N/OS 8.4
Time-to-Live for Received Information
EachremotedeviceLLDPpacketincludesanexpirationtime.Iftheswitchport
doesnotreceiveanLLDPupdatefromtheremotedevicebeforethetime‐to‐live
clockexpires,theswitchwillconsidertheremoteinformationtobeinvalid,and
willremoveallassociatedinformationfromtheMIB.
Remotedevices
canalsointentionallysettheirLLDPtime‐to‐liveto0,indicatingto
theswitchthattheLLDPinformationisinvalidandshouldbeimmediately
removed.