--  *****************************************************************
--  DLINKSW-CONTROLLER-MIB.mib : Switch Controller MIB
--
--  Copyright (c) 2013 D-Link Corporation, all rights reserved.
--
--  *****************************************************************
DLINKSW-CONTROLLER-MIB DEFINITIONS ::= BEGIN

    IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE       
                FROM SNMPv2-SMI    
	    TruthValue
                FROM SNMPv2-TC 
        MODULE-COMPLIANCE, OBJECT-GROUP 
                FROM SNMPv2-CONF               
        dlinkIndustrialCommon
                FROM DLINK-ID-REC-MIB;

    dlinkSwControllerMIB MODULE-IDENTITY
        LAST-UPDATED "201907040000Z"
        ORGANIZATION "D-Link Corp."
        CONTACT-INFO
            "        D-Link Corporation

             Postal: No. 289, Sinhu 3rd Rd., Neihu District,
                     Taipei City 114, Taiwan, R.O.C
             Tel:     +886-2-66000123
             E-mail: tsd@dlink.com.tw
            "
        DESCRIPTION
            "This MIB module defines objects for configuring switch controller."
        REVISION "201907040000Z"
        DESCRIPTION
            "Add new MIB object dHeadOfLinePrevention. 
            "

        REVISION "201303040000Z"
        DESCRIPTION
            " This is the first version of the MIB file. 
            "
        ::= { dlinkIndustrialCommon 27 }

-- -----------------------------------------------------------------------------
    dControllerNotifications    OBJECT IDENTIFIER ::= { dlinkSwControllerMIB 0 }
    dControllerObjects          OBJECT IDENTIFIER ::= { dlinkSwControllerMIB 1 }
    dControllerConformance      OBJECT IDENTIFIER ::= { dlinkSwControllerMIB 2 }

-- -----------------------------------------------------------------------------

    dControllerPktFwdCtrl	      OBJECT IDENTIFIER ::= {dControllerObjects 1}
      
    dControllerAltStoreFwdEnabled  OBJECT-TYPE
        SYNTAX        TruthValue
        MAX-ACCESS    read-write
        STATUS        current
        DESCRIPTION   
            "This object indicates whether ASF (Alternative Store and Forward) is 
            enabled.
            The ASF is used to reduce latency for large packets. When ASF is enabled,
            packets could be forwarded before it has been entirely received. To avoid 
            underruns, ASF takes place only when all below conditions are fulfilled:
			1) Ingress port speed is faster or equal to that of egress port; 
			2) Packet size is larger than predefined value.
		    The predefined value is chip dependent.
		    Set to 'true' to enable ASF feature. It allows packets to be sent 
		    in a cut-through manner. Setting the object to 'false' will disable
		    ASF."
        DEFVAL      { false }              
        ::= { dControllerPktFwdCtrl 1}   
        
    dHeadOfLinePrevention  OBJECT-TYPE
        SYNTAX        TruthValue
        MAX-ACCESS    read-write
        STATUS        current
        DESCRIPTION   
            "Head-of-line blocking (HOL blocking) is a performance-limiting phenomenon 
            that occurs when a line of packets are held up by the first packet.The switches
            with input buffering can suffer HOL blocking because only the oldest packet is 
            available for forwarding (FIFO). The more recent arrivals cannot be forwarded 
            if the oldest packet cannot be forwarded because its destination output is busy 
            (Congestion). The phenomenon can have severe performance-degrading effects.
            
            With HoL Prevention, the new arrivals could potentially be forwarded around the 
            stuck oldest packet to their respective destinations.."
        DEFVAL { true }                
        ::= { dControllerObjects 2}  
     
-- -----------------------------------------------------------------------------
-- Conformance
-- -----------------------------------------------------------------------------       
    dControllerCompliances OBJECT IDENTIFIER ::= { dControllerConformance 1 }
		
	dControllerCompliance MODULE-COMPLIANCE
		STATUS          current
		DESCRIPTION 
			"The compliance statement for entities which implement the 
			DLINKSW-CONTROLLER-MIB."
		MODULE -- this module
          MANDATORY-GROUPS {
            dControllerBasicGroup 
          }
 		
          GROUP dControllerAsfGroup
          DESCRIPTION
            "This group is supported if ASF (Alternative Store and Forward) is
            supported."    
	    ::= { dControllerCompliances 1 }
		
	dControllerGroups OBJECT IDENTIFIER ::= { dControllerConformance 2 }
		
    dControllerAsfGroup OBJECT-GROUP
		OBJECTS { 
		    dControllerAltStoreFwdEnabled
		}
		STATUS current
		DESCRIPTION 
			"This group contains the collection of objects which are used to 
            configure the ASF feature."						
		::= { dControllerGroups 1 }     
		
    dControllerBasicGroup OBJECT-GROUP
		OBJECTS { 
		    dHeadOfLinePrevention
		}
		STATUS current
		DESCRIPTION 
			"This group contains the collection of objects which are basic to 
            configure the controller."						
		::= { dControllerGroups 2 }
      
END