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Table Of Contents
VMware, Inc. 227
Chapter 11 Configuring a Virtual Network
5TomakechangestothesubnetortheDHCPsettingsforavirtualnetwork,clickthe
buttonontherightthatcorrespondstothevirtualnetworkyouwanttoconfigure,
andselectSubnetorDHCP.
IntheSubnetdialogbox,youcanchangethesubnet’sIPaddressandthesubnet
mask.
Theaddressmustbeavalidnetworkaddressthatissuitableforusewiththe
subnetmask.
Thedefaultsubnetmaskis255.255.255.0(aclassCnetwork).Typically,thismeans
youshouldmodifyonlythethirdnumberintheIPaddressforexample,xin
192.168.x.0or172.16.x.0.Ingeneral,
youshouldnotchangethesubnetmask.
Certainvirtualnetworkservicesmightnotworkaswellwithacustomizedsubnet
mask.
Whenyoumodifythenetworkaddressorsubnetmask,VMwareServer
automaticallyupdatestheIPaddresssettingsforothercomponents—suchas
DHCP,NAT,andhostvirtualadapter—onthatvirtualnetwork
toreflectthenew
settings.ThespecificsettingsthatareautomaticallyupdatedincludeDHCPlease
range,DHCPserveraddress,NATgatewayaddress,andhostvirtualadapterIP
address.However,ifyouchangeanyofthesesettingsfromitsdefaultvalue
evenifyoulaterchangethesettingbackto
thedefaultVMware Serverdoesnot
updatethatcustomsetting.
IntheDHCPsettingsdialogbox,youcanchangetherangeofIPaddresses
providedbytheDHCPserveronaparticularvirtualnetwork.Youcanalsosetthe
durationofleasesprovidedtoclientsonthevirtualnetwork.
6Whenyou
havemadeallthechangesyouwanttomakeinthevirtualnetwork
editor,clickOK.
Enabling, Disabling, Adding, and Removing Host Virtual
Adapters
WhenyouinstallVMwareServer,twonetworkadaptersareaddedtotheconfiguration
ofyourhostoperatingsystem:onethatallowsthehosttoconnecttothehostonly
networkandonethatallowsthehosttoconnecttotheNATnetwork.
Ifyouarenotusingtheseadapters,youcan
removethem.OnWindowshosts,youcan
disabletheadaptersinsteadofremovingthem.Thepresenceoftheseadaptershasa
slightperformancecost,becausebroadcastpacketsmustgototheextraadapters.On
Windowsnetworks,browsingyournetworkcanbeslowerthanusual.Andinsome
cases,theseadapters
interactwiththehostcomputersnetworkingconfigurationin
undesirableways.