VMware VLM3-ENG-CP - Lab Manager - PC Guia do Utilizador descarregar pdf (Página 182)

VMware Stage Manager User’s Guide

182 VMware, Inc.

Fromaperformanceperspective,networkfencingimpactsthetrafficflowbetween

modules.Fencingrequiresaslightlyhighernumberofresourcesonthehost,suchas

memory,CPU,networking,andvirtualmachineslots.Ifyouenablefencingbutnever

useit,theseresourcesdonotcomeintoplay.

Fencing Overview

Virtualmachinesinaconfigurationhavepreconfigured(internal)IPaddresses.When

youdeployvirtualmachinesinfencedmode,Stage Managerassignsauniqueexternal

IPaddresstoeachofthesemachines.Throughtheseexternaladdresses,virtual

machinesbothinsideandoutsidethefencecancommunicatewitheachother.

Stage Managerusesavirtual

machinecalledavirtualroutertoroutepacketsbetween

thesevirtualmachines.Stage Managerconfiguresthevirtualrouterwhenyoudeploy

afencedconfigurationanddeletesitwhenyouundeploytheconfiguration.

Figure C‐1illustratesconfigurationswithoutfencingandwithfencing.

Figure C-1. Configuration A (Without Fencing) and Configuration B (With Fencing)

OTEWhenyoudeployaconfigurationinfencedmodewiththeBlockTr afficInand

Outoption,Stage M anagerdoesnotcreate avirtualrouterorassignexternalIP

addresses.See“FencingOptions”onpage 183.

fenced

network

ESX Server host 2ESX Server host 1

client machine

configuration a configuration b

(fenced)

network

legend

connection

fenced connection

IIP internal IP address

EIP external IP address for fenced configurations

VR virtual router

EIP 192.168.0.4 EIP 192.168.0.3

IIP 192.168.0.1

MAC 00:50:56:00:00:01

IIP 192.168.0.2

MAC 00:50:56:00:00:02

VM1 VM2

IIP 192.168.0.1

MAC 00:50:56:00:00:01

IIP 192.168.0.2

MAC 00:50:56:00:00:02

VM1 VM2

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