VMware Workstation 7 Uživatelský manuál stáhnout pdf (Strana 311)

VMware, Inc. 311

Chapter 15 Advanced Virtual Networking

Potential Issues with Host-Only Networking on Linux

Thefollowingarecommonissuesyoumightencounterwhenyouareconfiguringa

host‐onlynetworkonLinux.

DHCPD on the Linux Host Does Not Work After Installing

Workstation

IfyouwererunningtheDHCPserverdhcpdutilityonyourmachinebeforeyou

installedWorkstation,itprobablywasconfiguredtorespondtoDHCPrequestsfrom

clientsonanynetworkinterfacepresentonthemachine.Whenhost‐onlynetworking

isconfigured,anadditionalnetworkinterface,vmnet1,ismarkedupandavailablefor

e,anddhcpdmightnoticethis.

Insuchcases,somedhcpdimplementationsabortiftheirconfigurationfilesdonot

includeasubnetspecificationfortheinterface.Thiscanhappenevenifdhcpdisnot

supposedtorespondtomessagesthatarrivethroughtheinterface.

Thebestsolutionistoaddali

netothedhcpdconfigurationfileinthefollowingformat:

subnet <net>.0 netmask 255.255.255.0 {}

Here <net>isthenetworknumberassignedtoyourhost‐onlynetwork,forexample,

192.168.0.Thislineintheconfigurationfileinformsdhcpdaboutthehost‐onlynetwork

andtellsitexplicitlynottorespondtoanyDHCPrequestsarrivingfromit.

Analternativesolutionistoexplicitlystatethesetofne

tworkinterfacesfo

rdhcpdto

monitoreachtimeyoustarttheprogram.Forexample,ifyourmachinehasone

Ethernetinterface,eth0,eachtimeyoustartdhcpd,listtheinterfaceonthecommand

line:

dhcpd eth0

Thispreventsdhcpdfromsearchingforallavailablenetworkinterfaces.

Ifthesesolutionsdonot workforyourDHCPserver program,itmightbeanoldDHCP

server.YoucantryupgradingtoamorecurrentversionofDHCPavailablefromthe

InternetSystemsConsortium(ISC)Website.

DHCP and DDNS

UseDHCPtosupplyIPaddressesaswellasotherinformation,suchastheidentityof

ahostrunninganameserverandthenearestrouterorgateway.TheDHCPserverin

Workstationdoesnotprovideameanstodynamicallyestablisharelationshipbetween

theIPaddressitassignsandacl

ient’sname(thatis,toupdateaDNSserverusing

dynamicdomainnameservice(DDNS).

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VMware Workstation 7 Uživatelský manuál Strana 311