Specifications

Table Of Contents
VMware Server Virtual Machine Guide
154 VMware, Inc.
Several!of!the!switches!and!the!networks!associated!with!them!are,!by!default,!used!for!
special!named!configurations.!The!bridged!network!normally!uses!VMnet0.!The!
hostonly!network!uses!VMnet1!by !default.!The!NAT!network!uses!VMnet8!by!default.!
The!other!available!networks!are!named!VMnet2,!VMnet3,!VMnet4,!and!so!on.
You!connect!a!virtual!machine!to!a!switch!by!selecting!the!virtual!network!adapter!to!
connect!in!the!virtual!machine!settings!editor,!and!configuring!it!to!use!the!virtual!
network.
Bridge – The!bridge!lets!you!connect!your!virtual!machine!to!the!LAN!used!by!your!
host!computer.!It!connects!the!virtual!network
!adapter!in!your!virtual!machine!to!the!
physical!Ethernet!adapter!in!your!host!computer.!
The!bridge!is!installed!during!VMware!Server!installation!(on!a!Linux!host,!you!must!
choose!to!make!bridged!networking!available!to!your!virtual!machines).!It!is!set!up!
when!you!create!a!new!virtual!machine!using!
bridged!networking.
You!can!set!up!additional!virtual!bridges!to!use!in!custom!configurations!that!require!
connections!to!more!than!one!physical!Ethernet!adapter!on!the!host!computer.!
Host virtual adapter – The!host!virtual!adapter!is!a!virtual!Ethernet!adapter!that!
appears!to!your!host!operating!system!as!a!VMware!virtual!Ethernet!adapter!on
!a!
Windows!host!and!as!a!hostonly!interface!on!a!Linux!host.!It!allows!you!to!
communicate!between!your!host!computer!and!the!virtual!machines!on!that!host!
computer.!The!host!virtual!adapter!is!used!in!hostonly!and!NAT!configurations.
The!host!virtual!adapter!is!not!connected!to!any
!external!network!unless!you!set!up!
special!software!on!the!host!computer!!a!proxy!server,!for!example!!to!connect!the!
hostonly!adapter!to!the!physical!network!adapter.
The!software!that!creates!the!host!virtual!adapter!is!installed!when!you!install!VMware!
Server!(on!a!Linux!host,!you!must
!choose!to!make!hostonly!networking!available!to!
your!virtual!machines).!A!host!virtual!adapter!is!created!when!you!boot!the!host!
computer.
You!can!set!up!additional!host!virtual!adapters!as!needed.
NAT device – The!NAT!(network!address!translation)!device!allows!you!to!connect!
your!virtual!machines!to!an!external!network!when
!you!have!only!one!IP!network!
address!on!the!physical!network,! and!that!address!is!used!by!the!host!computer.!You!
can,!for!example,!use!NAT!to!connect!your!virtual!machines!to!the!Internet!through!a!
dialup!connection!on!the!host!computer!or!through!the!host!computer’s!Ethernet!
adapter!
or!wireless!Ethernet!adapter.!NAT!is!also!useful!when!you!need!to!connect!to!
a!nonEthernet!network,!such!as!Token!Ring!or!ATM.
The!NAT!device!is!set!up!automatically!when!you!install!VMware!Server.!(On!a!Linux!
host,!you!must!choose!to!make!NAT!available!to!your!virtual!machines.)