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Table Of Contents
VMware, Inc. 235
Chapter 11 Configuring a Virtual Network
Assigning a Specific MAC Address Manually
AssignaspecificMACaddressusingtheproceduredescribedin“EditingaVirtual
NetworkAdapteronpage 224.Thisguaranteesthefollowing:
ThesameMACaddressisassignedtoagivenvirtualmachineeverytimeyou
poweriton,evenifthevirtualmachineismoved.
AuniqueMACaddressforeachvirtualmachinewithinanetworkedenvironment.
Theaddressmustbeintheformat:
00:50:56:XX:YY:ZZ
XXmustbeavalidhexadecimalnumberbetween00hand3Fh,andYYandZZmustbe
validhexadecimalnumbersbetween00handFFh.Youmustusethisformatbecause
VMwareServervirtualmachinesdonotsupportarbitraryMACaddresses.
AvalueforXX:YY:ZZthatisuniqueamongyourhard
codedaddressesavoidsconflicts
betweentheautomaticallyassignedMACaddressesandthemanuallyassigned
addresses.
Controlling Routing for a Host-Only Network on a Linux Host
Ahostonlynetworkisafullfledgednetwork.Ithasanetworkinterfaceassociated
withit(VMnet1)thatismarked“up”atthetimethehostoperatingsystemisbooted.
Consequently,routingserverprocessesthatoperateonthehostoperatingsystem,such
asroutedandgated,automaticallydiscoverthe
networkandpropagateinformation
abouthowtoreachitunlessyouexplicitlyconfigurethemnottodoso.
Ifeitheroftheseprocessesisbeingrunonlytoreceiveroutinginformation,theeasiest
solutionistoruntheprocesswitha-qoptionsothatitdoesnotsupplyrouting
information,
onlyreceivesit.
If,however,theprocessesarerunningbecausetheysupplyroutinginformation,you
needtoconfigurethemsotheydonotadvertiseroutestothehostonlynetwork.
TheversionofroutedthatcomeswithmanydistributionsofLinuxhasnosupportfor
specifyingthataninterfaceshouldnot
beadvertised.Consulttherouted(8)manual
pageforyoursystemincaseyouhaveamorecontemporaryversionofthesoftware.
Thegatedprocessrequiressomeconfiguration.Youneedtoexplicitlyexcludethe
VMnet1interfacefromanyprotocolactivity.Ifyouneedtorunvirtualmachinesona
hostonlynetwork
onamultihomedsystemwheregatedisusedandhaveproblems
doingso,contactVMwaretechnicalsupportbysubmittingasupportrequestat
www.vmware.com/requestsupport.