Managing Switch Configuration and Files
2-34 Basic Configuration
Parameters
Defaults
Ifnotspecified,thedefaultportnumber23willbeused.
Mode
Switchcommand,readwrite.
Example
ThisexampleshowshowtostartaTelne tsessiontoahostat10.21.42.13:
D2(su)->telnet 10.21.42.13
Managing Switch Configuration and Files

Configuration Persistence Mode

Thedefaultstateofconfigurationpersistencemodeis“auto,”whichmeansthatwhenCLI
configurationcommandsareentered,orwhenaconfigurationfilestoredontheswitchis
executed,theconfigurationissavedtoNVRAMautomaticallyatthefollowingintervals:
•Onastandaloneunit,theconfigurationischeckedeverytwominutesandsavediftherehas
beenachange.
•Onastack,theconfigurationissavedacrossthestackevery30minutesiftherehasbeena
change.
IfyouwanttosavearunningconfigurationtoNVRAMmoreoftenthantheautomaticintervals,
executethesaveconfigcommandandwaitforthesystemprompttoreturn.Aftertheprompt
returns,theconfigurationwillbepersistent.
Youcanchangethepersistencemodefrom“auto”to“manual”withthesetsnmppersistmode
command.Ifthepersistencemodeissetto“manual,”configurationcommandswillnotbe
automaticallywrittentoNVRAM.Althoughtheconfigurationcommandswillactivelymodifythe
runningconfiguration,theywillnotpersistacrossaresetunlessthesaveconfigcommandhas
beenexecuted.
Purpose
TosetandviewthepersistencemodeforCLIconfigurationcommands,manuallysavethe
runningconfiguration,view,manage,andexecuteconfigurationfilesandimagefiles,andsetand
viewTFTPparameters.
host SpecifiesthenameorIPaddressoftheremotehost.
port (Optional)Specifiestheserverportnumber.
Note: When your device is configured for manual SNMP persistence mode, and you attempt to
change the boot system image, the device will not prompt you to save changes or warn you that
changes will be lost.