Supplement to Information Technology: Local and Metropolitan Area Networks : Specific Requirements-- Pt. 12: Demand-priority Access Method, Physical Layer and Repeater Specifications : Full-duplex OperationOptional MAC capabilities are defined to allow direct link connection between two end nodes with provision for both half-duplex and full-duplex operation; burst-mode packet transmission from an end node to a repeater where the end node may send one or more packets each time it is granted permission to transmit; and implementation of the MAC Control sublayer to allow the exchange of control requests between peer MAC entities across the network when in ISO/IEC 8802-3 compatibility mode. Full interoperability is maintained with existing ISO/IEC 8802-12 products. |
From inside the book
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Page 60
... basic MAC . Blind_Monitor_Delay . This timer value is used by DCMACs during mode arbitration for generating a delay in states ARB2r and ARB2e of the arbitration state machine . It is not used in a basic MAC . Burst_Gap_Duration . This ...
... basic MAC . Blind_Monitor_Delay . This timer value is used by DCMACs during mode arbitration for generating a delay in states ARB2r and ARB2e of the arbitration state machine . It is not used in a basic MAC . Burst_Gap_Duration . This ...
Page 61
... basic MAC . Send_Idle_Count . This timer value is used by the DCMAC during back - to - back RMode receive operations to adjust the time that Idle_Down is sent prior to Grant . The timer value is set in TX3_IDLE in the RECEIVE_FRAME case ...
... basic MAC . Send_Idle_Count . This timer value is used by the DCMAC during back - to - back RMode receive operations to adjust the time that Idle_Down is sent prior to Grant . The timer value is set in TX3_IDLE in the RECEIVE_FRAME case ...
Page 67
... basic MAC and a DCMAC operating in EMode . FULL_DUPLEX_ENABLED : Boolean ; This variable indicates whether or not full - duplex mode was enabled at the end of DCMAC training . It is set to false in a basic MAC . FULL_DUPLEX_REQUESTED ...
... basic MAC and a DCMAC operating in EMode . FULL_DUPLEX_ENABLED : Boolean ; This variable indicates whether or not full - duplex mode was enabled at the end of DCMAC training . It is set to false in a basic MAC . FULL_DUPLEX_REQUESTED ...
Common terms and phrases
allowed allowed-configuration field arbitration Autonomous Process basic MAC Begin End BEHAVIOUR DEFINED Boolean BT Yes burst mode burst sequence capability cascade port configuration DataValue DCMAC operating DCMAC_MODE DCMAC_Timer decision tree destination address EMdc ENABLE_HIGH_ONLY End End end node End-node EVENT_SORT False FD bit Figure frame format FRAME_STATUS FRAME_TYPE full-duplex mode full-duplex operation GDMO half-duplex Idle_Down Idle_Up IEEE implemented Incoming ISO/IEC Link_Warning lower entity MA_CONTROL.request MA_UNITDATA.request MAC Control frame MAC Control sublayer MAC frame MAC state machine MAC_PRIORITY MAC_STATUS MAC_Timer MAC3 MAC3_IDLE_OR_REQUEST Medium Dependent Interface MSDU NEXT_ACTION octets opcode operating in EMode optional MAC Control packet transmission parameters Physical Layer PMI_CONTROL.indication primitive priority PROCEDURE promiscuous mode rcvd received frame repeater Request_High Request_Normal requested-configuration field Retrain delay RETRAIN_LINK RETRAIN_LINK_EVENT RMAC sent source address subclause Timer expires timer value training frame training in RMode training initiator training responder Training_Down training-response frame TX state machine variable indicates