Setting Auto-Negotiation and Advertised Ability
5-14 Port Configuration
Setting Auto-Negotiation and Advertised Ability
Purpose
Toreview,disableorenableauto‐negotiation,andtoconfigureportadvertisementforspeedand
duplex.
Duringauto‐negotiation,theport“tells”thedeviceattheotherendofthesegmentwhatits
capabilitiesandmodeofoperationare.Ifauto‐negotiationisdisabled,theportrevertstothe
valuesspecified
bydefaultspeed,defaultduplex,andtheportflowcontrolcommands.
Innormaloperation,withallcapabilitiesenabled,advertisedabilityenablesaportto“advertise”
thatithastheabilitytooperateinanymode.Theusermaychoosetoconfigureaportsothatonly
aportionofitscapabilities
areadvertisedandtheothersaredisabled.
Commands
show port negotiation
Usethiscommandtodisplaythestatusofauto‐negotiationforoneormoreports.
Syntax
show port negotiation [port-string]
Parameters
Defaults
Ifport‐stringisnotspecified,auto‐negotiationstatusforallportswillbedisplayed.
Mode
Switchcommand,read‐only.
Note: Advertised ability can be activated only on ports that have auto-negotiation enabled.
For information about... Refer to page...
show port negotiation 5-14
set port negotiation 5-15
show port advertise 5-15
set port advertise 5-16
clear port advertise 5-17
port‐string (Optional)Displaysauto‐negotiationstatusforspecificport(s).Fora
detaileddescriptionofpossibleport‐stringvalues,referto“PortString
SyntaxUsedintheCLI”onpage5‐2.