Specifications

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Configuring and Managing DNS

5-16 Configuring and Managing IP Interfaces and Services

Changing the Idle Timeout for CLI Management Sessions

Bydefault,MSSau tomaticallyterminatesaconsoleorTelnetsessionthatisidleformorethanone

hour.TochangetheidletimeoutforCLImanagementsessions,usethefollowingcommand:

setsystemidle‐timeoutseconds

Youcanspecifyfrom0to86400seconds(oneday).Thedefaultis3600(onehour).

Ifyouspecify0,

theidletimeoutisdisabled.Thetimeoutintervalisin30‐secondincrements.Forexample,the

intervalcanbe0,or30seconds,or60seconds,or90seconds,andsoon.Ifyouenteraninterval

thatisnotdivisibleby30,theCLIrounds

uptothenext30‐secondincrement.Forexample,ifyou

enter31,theCLIroundsupto60.

ThiscommandappliestoalltypesofCLImanagementsessions:console,Telnet,andSSH.The

timeoutchangeappliestoexistingsessionsonly,nottonewsessions.

Examples

Thefollowingcommandsetstheidletimeoutto1800seconds(onehalfhour):

setsystemidle‐timeout1800

success:changeaccepted.

Toresettheidletimeouttoitsdefaultvalue,usethefollowingcommand:

clearsystemidle‐timeout

Todisplaythecurrentsetting(ifthetimeouthasbeenchangedfromthedefault),use

theshow

configareasystemcommand.Ifyouarenotcertainwhetherthetimeouthasbeenchanged,use

theshowconfigallcommand.

Configuring and Managing DNS

YoucanconfigureaRoamAboutSwitchtouseaDomainNameService(DNS)servertoresolve

hostnamesintotheirIPaddresses.Thiscapabilityisusefulincaseswhereyouspecifyahostname

insteadofanIPaddressinacommand.

Forexample,asanalternativetothecommandping192.168.9.1,

youcanenterthecommandping

chris.example.com.Whenyouenterpingchris.example.com,theRoamAboutSwitch’sDNS

clientqueriesaDNSserverfortheIPaddressthatcorrespondstothehostname chris.example.com,

thensendsthepingrequesttothatIPaddress.

TheRoamAboutSwitch’sDNSclientisdisabledbydefault.To

configureDNS:

•EnabletheDNSclient.

•SpecifytheIPaddressesoftheDNSservers.

• ConfigureadefaultdomainnameforDNSqueries.

Enabling or Disabling the DNS Client

TheDNSclientisdisabledbydefault.ToenableordisabletheDNSclient,usethefollowing

command:

set ip dns {enable | disable}