Chapter15
VBASConfiguration
TableofContents
VBASOverview...............................................................157
ConguringVBAS............................................................157
VBASCongurationExample.............................................158
VBASMaintenanceandDiagnosis......................................159
VBASOverview
VBASistheabbreviationofVirtualBroadbandAccessServer .It
isanextentinquiryprotocolbetweenIP-DSLAMandBRASequip-
ment.ThecommunicationmethodbetweenIP-DSLAMandBRAS
islayer2point-to-point,thatis,interfaceinformationinquiryand
responsepacketsareencapsulatedinlayer2Ethernetdataframe.
TheprincipleistocongureDSLAMDigitalSubscriberLineAccess
Multiplexer)correspondingtoVLANonBAS.Duringtheprocedure
ofPPPOEcalling,DSLAMappliesVBASprotocol,thatis,mapping
tocorrespondingDSLAMaccordingtoVLANofuser .BASdemand
theuserlineidentityinquiryfromDSLAM.Inthisusermanual,
switchmeansDSLAMequipment.
VBASprotocolisimplementedbysendingVBASpacketbetween
BASandDSLAM.
ConfiguringVBAS
Enabling/DisablingVBAS
CommandFunction
ZXR10(config)#vbasenableThisenablesVBAS.
ZXR10(config)#novbasenableThisdisablesVBAS.
CondentialandProprietaryInformationofZTECORPORATION157