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Section 7, EoF Provisioning - Create an EVC

65K510DEP08-1A 7-9

Create an EVC

Thissubsectiondetailsthefollowing information:

• DefinitionofanEVC

•EVCguidelines

•StepsforcreatinganEVC

•StepsforconfiguringanEVC

•EVCexample

EVC Definition

TheMetroEthernetForum(MEF)definesanEVCas“anassociationoftwoormoreUNIs,”

whereaUNIisastandard10/100/1000 Ethernetinterfacethatisthepointofdemarcation

betweenthe CustomerEquipment(CE)andtheMetroEthernetNetwork(MEN)oftheservice

provider.Insimpleterms,anEVC

performstwofunctions.

• Connectstwoormoresubscribersites(UNIs)enablingthetransferofEthernetservice

frames

•PreventsdatatransferbetweenthesubscribersitesthatarenotpartofthesameEVC

ThiscapabilityenablesanEVCtoprovidedataprivacyandsecuritysimilartoaFrame

RelayorATMPermanentVirtual

Circuit(PVC).

MultipleEVCscanresideonacommonbondinggrouporEthernetport.EachEVCtypically

hasanassociatedEVCVLANtagwhoseVLANIDisuniqueamongotherEVCsintheMEN.

TheEVCVLANtagallowstheEVCtobeidentifiedandsepara tedfromotherEVCs.

Ata

minimum,twoitemsmustbesetupfortheEVC:theMENinterfaceitwilluseandtheS‐

tagitwilluse.

NOTE

TheS‐tagmustmatchtheEVCsconfiguredattheTotalAccess5000.

EVC Guidelines

Toensurevalidprovisioning,enforcethefollowingguidelineswhencreatinganEVC:

•AnEVCisappliedonlyifthe statusisRunning(asindicatedintheshowevcoutput),

whichindicatesthattheconditionsarevalid

•TwoEVCsareconsideredtobeduplicateiftheybothhavethesamevaluesforthe



followingattributes:

–MENport

–S‐tag

•NotwoEVCscanhavethesamename

•IfthesystemismanagedthroughaVLANonadesignatedEthernetport,theS‐tagvalue

fortheEVCcannotequalthemanagementVLANID

ADTRAN TA 5000 User Manual

Questions and Answers: