Enterasys b5 User Manual

Setting Port Link Traps and Link Flap Detection
7-24 Port Configuration
Setting Port Link Traps and Link Flap Detection
Purpose
Todisableorre‐enablelinktraps,displaylinktrapstatus,andtoconfigurethelinkflapping
detectionfunction.Bydefault,allportsareenabledtosendSNMPtrapmessagesindi cating
changestotheirlinkstatus(upordown).
Thelinkflapfunctiondetect swhenalinkisgoingupand
downrapidly(alsocalled“link
flapping”)onaphysicalport,andtakestherequiredactions(disableport,andeventuallysend
notificationtrap)tostopsuchacondition.Ifleftunresolved,the“linkflapping”conditioncanbe
detrimentaltonetworkstabilitybecauseitcantriggerSpanningTreeandroutingtable
recalculation.
Commands
show port trap
UsethiscommandtodisplaywhethertheportisenabledforgeneratinganSNMPtrapmessageif
itslinkstatechanges.
Syntax
show port trap [port-string]
Parameters
For information about... Refer to page...
show port trap 7-24
set port trap 7-25
show linkflap 7-25
set linkflap globalstate 7-28
set linkflap portstate 7-28
set linkflap interval 7-29
set linkflap action 7-29
clear linkflap action 7-30
set linkflap threshold 7-30
set linkflap downtime 7-31
clear linkflap down 7-31
clear linkflap 7-32
show newaddrtrap 7-33
set newaddrtrap 7-33
port‐string (Optional)Displayslinktrapstatusforspecificport(s).Foradetailed
descriptionofpossibleport‐stringvalues,referto“PortStringSyntaxUsed
intheCLI”onpage7‐1.

Enterasys b5 Specifications

General

Brand	Enterasys
Model	b5
Category	Other
Language	English