Hardware Controller Commands
XSR CLI Reference Guide 4-85
description
Thiscommandsetsthedescriptiontextforaninterface.Thedescriptionwillappearinthe
ifDescription(interfacedescription)variableoftheMIB.
Syntax
description <text>
Mode
Interfaceconfiguration:XSR(config-if<xx>)#
Syntax of the “no” Form
Thenoformofthiscommandclearsthedescription:
XSR(config-if<S1/0>)#no description
Example
XSR(config-if<S1/0>)#description “My FastEthernet Interface”

duplex

Thiscommand,usedinconjunctionwiththespeedcommand,forcestheFastEthernet/
GigabitEthernetinterfacetooperateataspecificduplexmodeandspeed.Settingthespeedor
duplextoautonegotiateimpliesthatboththespeedandtheduplexmodewillbenegotiated.Itis
notpossibletomanuallysetoneandautonegotiatetheother.Forexample,youcannotsetthe
speedto10Mb/sandsettheduplextoautonegotiate.
Whenissuingthiscommand,beawareofthefollowingadditionalconditions:
•Duplexmodecannotbechangedwhileinloopback.
• Changingtheduplexmodepreservesthespeed.
•Whenthespeedischangedfromauto,duplexwillbesettohalf.
•Settingspeedorduplextoauto,nospeed,ornoduplexsetsbothduplexandspeedtoauto.
•WhenconnectinganautosettingonanXSRtoaforcedsettingonanotherrouter,theforced
settingmustbesettohalf-duplexregardlessofthespeed(10or100Mbits).
•WhentheGigabitFiberportisuses,bothduplexandspeedmustbesettoautoonbothendsof
thelinetoavoidanunpredictablelink.
Syntax
duplex {full | half | auto}
text Alphanumericcharacterswhichdescribetheinterface.
full Forcestheinterfacetooperateatfullduplex.
half Forcestheinterfacetooperateathalfduplex.
auto Allowstheporttosetthespeedandduplexmodeautomatically.