Name: ADTRAN Total Access 5000
Brand: ADTRAN
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Total Access 5000 Business Services Deployment Guide

F-4 65K510DEP08-1A

EVCs

The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CEandthe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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hasan

associatedEVCwhoseVLANIDisunique amongotherEVCsintheMEN.TheEVCs‐tag

allowstheEVCtobeidentifiedandseparatedfromotherEVCswithintheMEN.TheEVCs‐

tagexistsonlywithintheMENandis

nottransmittedfromorreceivedattheCE.

TheMEFdefinesEthernetLine(E‐Line)servicesasaservicethatprovidesapoint‐to‐point

EVCthatconnectsexactlytwoUNIs.

EVC Attributes

TheattributesofanEVCaredescribedinthefollowingparagraphs.

Name

ThisattributeisanarbitrarystringthatisusedtoidentifytheEVCwithintheMEN.Thevalue

mustbeuniqueacrossallEVCsdefinedinthenetworkelement,andisintendedfor

managementandcontrolpurposes.ThevalueisnotcarriedinanyfieldintheEthernetframe.

Asan

example,theAcmeServiceProvidercanuse“EVC‐0001898‐ACME‐MEGAMA RT”to

representthe1898thEVCintheMEN.Inthisexample,thecustomerfortheEVCisMegaMart.

Configuration Status

Thisread‐onlyattributeind icatesthecurrentstatusoftheEV C.TheEVCcanbeadministra‐

tivelyenabled,butcannotbeinthefunctionalstateifitisnotfullyconfiguredorifaconflict

exists.IftheEVCisnotappliedduetotheconfig urationoraconflict,refer

toTableF ‐3fora

listsofthepossiblevalues.

Table F-3. EVC Status Values

Possible Values Definition

Running ConditionsareokayandtheEVCprovisioningisapplied.

MissingConnection TheEVCisnotconnectedtoenoughactiveinterfaces.Themini‐

mumrequiredistwo.Theactiveinterfacecanbedirectlycon‐

nectedbyMEN‐portormappedUNI.

TagConflict AnotherEVCisadministrativelyenabledandconfiguredtouse

thesame

s‐tag.

Disabled TheStatevalueoftheEVCisprovisionedasdisabled.

System‐management‐evcCon‐

flict

TheEVCs‐tagisinusebythesystemmanagementEVC.

ADTRAN Total Access 5000 Specifications

Interfaces

craft interface	DB-9 RS-232 Electrical Interface (Async)
admin interface	DB-9 RS-232 DTE Electrical Interface (Async with Modem Control Signals)
network management port	DB-9 RS-232 DTE Electrical Interface (Async)
ethernet interface	10Bt
external alarm inputs	16

Operating Environment