Lenovo Flex System Fabric CN4093 User Manual

544 CN4093 Application Guide for N/OS 8.4
LLDP Transmit Features
NumerousLLDPtransmitoptionsareavailable,includingscheduledand
minimumtransmitinterval,expirationonremotesystems,SNMPtrapnotification,
andthetypesofinformationpermittedtobe shared.
Note: Instackingmode,onlythestackMastertransmitsLLDPinformationforall
theportsinastack.ThestackMACaddressisused
asthesourceaddressinthe
LLDPpackets.
Scheduled Interval
TheCN4093canbeconfiguredtotransmitLLDPinformationtoneighboring
devicesonceeach5to32768seconds.Thescheduledintervalisglobal;thesame
intervalvalueappliestoallLLDPtransmit‐enabledports.However,tohelp
balanceLLDPtransmissionsandkeepthemfrombeingsentsimultaneouslyonall
ports,each
portmaintainsitsownintervalclock,basedonitsowninitializationor
resettime.Thisallowsswitch‐wideLLDPtransmissionstobespreadoutover
time,thoughindividualportscomplywiththeconfiguredinterval.
Theglobaltransmitintervalcanbeconfiguredusingthefollowingcommand:
whereintervalisthenumberof
secondsbetweenLLDPtransmissions.Therangeis
5to32768.Thedefaultis30seconds.
Minimum Interval
InadditiontosendingLLDPinformationatscheduledintervals,LLDP
informationisalsosentwhentheCN4093detectsrelevantchangestoits
configurationorstatus(suchaswhenportsareenabledordisabled).Toprevent
theCN4093fromsendingmultipleLLDPpacketsinrapidsuccessionwhenport
statusisinflux,
atransmitdelaytimercanbeconfigured.
Thetransmitdelaytimerrepresentstheminimumtimepermittedbetween
successiveLLDPtransmissionsonaport.Anyinterval‐drivenorchange‐driven
updateswillbeconsolidateduntiltheconfiguredtransmitdelayexpires.
Theminimumtransmitintervalcanbeconfiguredusingthefollowingcommand:
whereinterval
istheminimumnumberofsecondspermittedbetweensuccessive
LLDPtransmissionsonanyport.Therangeis1toone‐quarterofthescheduled
transmitinterval(lldp refresh-interval<value>),upto8192.Thedefaultis2
seconds.
CN 4093(config)# lldp refresh-interval <interval>
CN 4093(config)# lldp transmission-delay <interval>

Lenovo Flex System Fabric CN4093 Specifications

General

Brand	Lenovo
Model	Flex System Fabric CN4093
Category	Switch
Language	English