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-- ----------------------------------------------------------------------------
--
--  SIAE MICROELETTRONICA s.p.a.
--
--  Via Michelangelo Buonarroti, 21
--  20093 - Cologno Monzese
--  Milano
--  ITALY
--
-- ----------------------------------------------------------------------------
-- ----------------------------------------------------------------------------

SIAE-LLF-MIB
        DEFINITIONS ::= BEGIN

        IMPORTS
             MODULE-IDENTITY, OBJECT-TYPE
        FROM SNMPv2-SMI
             DisplayString, RowStatus, TruthValue
        FROM SNMPv2-TC
             InterfaceIndex
        FROM IF-MIB
             siaeMib
        FROM SIAE-TREE-MIB
             AlarmStatus, AlarmSeverityCode
        FROM SIAE-ALARM-MIB;

    llf MODULE-IDENTITY
        LAST-UPDATED "201409020000Z"
        ORGANIZATION "SIAE MICROELETTRONICA spa"
        CONTACT-INFO
            "SIAE MICROELETTONICA s.p.a.
             Via Michelangelo Buonarroti, 21
             20093 - Cologno Monzese
             Milano - ITALY
             Phone :  +39-02-27325-1
             E-mail: tbd@siaemic.com
            "
        DESCRIPTION
            "SIAE's Link Loss Forwarding MIB.
            "
      ::= { siaeMib 85 }

--------------------------------------------------------------------------------
--  llf GROUP
--------------------------------------------------------------------------------
--
-- This group is used for Link Loss Forwarding configuration and alarm reporting
--
-- Each physical interface (LAN) can be assigned to a LLF circuit in order to
-- propagate its LOS alarm through a radio link.
--
-- For each radio link, there are several circuits.
-- Each interface can insert into a circuit its LOS alarm to be propagate to the
-- other endpoint of a radio link.
-- In each directions, the circuit has an signal failure if at least the
-- operative status of one LAN connected to the circuit is down (LOS).
-- In the local terminal, a LAN interface uses the signal failure of the circuit
-- to propagate the LOS alarm by turning off physical level.
--
-- In order to propagate in both direction a LOS to an interface, a SNMP manager
-- must (in both link terminals):
-- 1) Create an entry in llfTable with index equal to the ifIndex of interface.
-- 2) Attach this entry to a circuit creating an entry in llfMapTable.
-- 3) Insert the LOS alarm in the circuit setting llfMapLosInsertion to
--    enable.
--
--------------------------------------------------------------------------------

------ Beginning --------------------------------------------------------------

    llfMibVersion  OBJECT-TYPE
        SYNTAX      INTEGER
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "Numerical version of this module.
             The string version of this MIB have the following format:
                XX.YY.ZZ
             so, for example, the value 1 should be interpreted as 00.00.01
             and the value 10001 should be interpreted as 01.00.01."
        DEFVAL {1}
    ::= {llf 1}

-------  Begin of llfTable
--
    llfTable  OBJECT-TYPE
        SYNTAX      SEQUENCE OF     LlfInterface
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "Table with SIAE's LLF entries."
    ::= {llf 2}

    llfEntry  OBJECT-TYPE
        SYNTAX      LlfInterface
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "SIAE's LLF entry."
        INDEX {llfIndex}
    ::= {llfTable 1}

    LlfInterface  ::=
        SEQUENCE {
            llfIndex               InterfaceIndex,
            llfEnable              INTEGER,
            llfUnidirectionalFault INTEGER,
            llfDelayTime           INTEGER,
            llfProtectionMode      INTEGER,
            llfAlarm               AlarmStatus,
            llfRowStatus           RowStatus
         }

    llfIndex  OBJECT-TYPE
        SYNTAX      InterfaceIndex
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "A unique value, greater than zero, for each
             interface supporting LLF. This object is identical to the ifIndex
             of the standard MIB-2 ifTable."
    ::= {llfEntry 1}

    llfEnable  OBJECT-TYPE
        SYNTAX      INTEGER {
                       disable (1),
                       enable  (2)
                    }
        MAX-ACCESS  read-create
        STATUS      current
        DESCRIPTION
            "On interfaces supporting LLF, this object is used to disable
             or enable LLF towards local LAN interfaces."
        DEFVAL {disable}
    ::= {llfEntry 2}

    llfUnidirectionalFault  OBJECT-TYPE
        SYNTAX      INTEGER {
                       disable (1),
                       enable  (2)
                    }
        MAX-ACCESS  read-create
        STATUS      current
        DESCRIPTION
            "When enable is set, a local link fault causes LLF on both local
             and remote interfaces."
        DEFVAL {disable}
    ::= {llfEntry 3}

    llfDelayTime OBJECT-TYPE
        SYNTAX      INTEGER   (0..10)
        MAX-ACCESS  read-create
        STATUS      current
        DESCRIPTION
            "The LLF delay time specifies the time interval (in seconds)
             to wait for to actuate or to remove the Link Loss Forwarding
             condition.
            "
        DEFVAL {0}
    ::= {llfEntry 4}

    llfProtectionMode  OBJECT-TYPE
        SYNTAX      INTEGER {
                       disable (1),
                       enable  (2)
                    }
        MAX-ACCESS  read-create
        STATUS      current
        DESCRIPTION
            "When protection mode is enabled, LLF alarm is issued only when
             all radio links or circuits connected to interface are alarmed.
            "
        DEFVAL {disable}
    ::= {llfEntry 5}

    llfAlarm  OBJECT-TYPE
        SYNTAX      AlarmStatus
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "Interface Link Loss Forwarding alarm status."
    ::= {llfEntry 6}

    llfRowStatus   OBJECT-TYPE
        SYNTAX      RowStatus
        MAX-ACCESS  read-create
        STATUS      current
        DESCRIPTION
            "Status of this row of llfTable.
             This object may not be set to destroy until at least a circuit
             belong to this LLF interface. In other words, circuits must be
             deleted before a LLF interface.
            "
    ::= {llfEntry 7}

--
-------  End of llfTable

-------  Begin of llfMapTable
--
    llfMapTable  OBJECT-TYPE
        SYNTAX      SEQUENCE OF     LlfMap
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "This table map llf interface on llf circuits."
    ::= {llf 3}

    llfMapEntry  OBJECT-TYPE
        SYNTAX      LlfMap
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "SIAE's llf cross-connection entry."
        INDEX {llfIndex, llfMapLinkIndex, llfMapPolIndex, llfMapCircuitIndex}
    ::= {llfMapTable 1}

    LlfMap  ::=
        SEQUENCE {
            llfMapLinkIndex     INTEGER,
            llfMapPolIndex      INTEGER,
            llfMapCircuitIndex  INTEGER,
            llfMapLosInsertion  INTEGER,
            llfMapInsertionMode INTEGER,
            llfMapSignalFail    TruthValue,
            llfMapRowStatus     RowStatus
         }

    llfMapLinkIndex  OBJECT-TYPE
        SYNTAX      INTEGER
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "Radio link identifier. With llfMapPolIndex and llfMapCircuitIndex it points to a
             specific instance of llfCircuitTable."
    ::= {llfMapEntry 1}

    llfMapPolIndex  OBJECT-TYPE
        SYNTAX      INTEGER
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "Radio polarization identifier. With llfMapLinkIndex and llfMapCircuitIndex it points to a
             specific instance of llfCircuitTable."
    ::= {llfMapEntry 2}

    llfMapCircuitIndex  OBJECT-TYPE
        SYNTAX      INTEGER
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "LLF circuit identifier. With llfMapLinkIndex and llfMapPolIndex it points to a
             specific instance of llfCircuitTable."
    ::= {llfMapEntry 3}

    llfMapLosInsertion  OBJECT-TYPE
        SYNTAX      INTEGER {
                       disable (1),
                       enable  (2)
                    }
        MAX-ACCESS  read-create
        STATUS      current
        DESCRIPTION
            "Enable or disable insertion of interface LOS into a specified
             circuit. The inserted LOS is transported through the radio link."
        DEFVAL { enable }
    ::= {llfMapEntry 4}

    llfMapInsertionMode  OBJECT-TYPE
        SYNTAX      INTEGER {
                       single (1),
                       group  (2)
                    }
        MAX-ACCESS  read-create
        STATUS      current
        DESCRIPTION
            "In single mode, LOS is inserted in the circuit if the relative
             interface has a LOS alarm. 
             In group mode, LOS is inserted when all (grouped) interfaces 
             mapped to the same circuit have a LOS alarm."
        DEFVAL { single }
    ::= {llfMapEntry 5}

    llfMapSignalFail  OBJECT-TYPE
        SYNTAX      TruthValue
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "Alarm condition detected on specified circuit."
    ::= {llfMapEntry 6}

    llfMapRowStatus   OBJECT-TYPE
        SYNTAX      RowStatus
        MAX-ACCESS  read-create
        STATUS      current
        DESCRIPTION
            "Status of this row of llfMapTable"
    ::= {llfMapEntry 7}

--
-------  End of llfMapTable

-------  Begin of llfCircuitTable
--
    llfCircuitTable  OBJECT-TYPE
        SYNTAX      SEQUENCE OF     LlfCircuit
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "Table describing llf circuits available over each link.
             This circuits can be connected to available interfaces via
             llfMapTable."
    ::= {llf 4}

    llfCircuitEntry  OBJECT-TYPE
        SYNTAX      LlfCircuit
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "SIAE's llf circuit entry."
        INDEX {llfCircuitLinkIndex, llfCircuitPolIndex, llfCircuitIndex}
    ::= {llfCircuitTable 1}

    LlfCircuit  ::=
        SEQUENCE {
            llfCircuitLinkIndex INTEGER,
            llfCircuitPolIndex  INTEGER,
            llfCircuitIndex     INTEGER,
            llfCircuitLinkLabel DisplayString,
            llfCircuitRowStatus RowStatus
         }

    llfCircuitLinkIndex  OBJECT-TYPE
        SYNTAX      INTEGER
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "Radio link identifier."
    ::= {llfCircuitEntry 1}

    llfCircuitPolIndex  OBJECT-TYPE
        SYNTAX      INTEGER
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "Radio polarization identifier."
    ::= {llfCircuitEntry 2}

    llfCircuitIndex  OBJECT-TYPE
        SYNTAX      INTEGER
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "LLF circuit identifier."
    ::= {llfCircuitEntry 3}

    llfCircuitLinkLabel OBJECT-TYPE
        SYNTAX      DisplayString (SIZE (0..32))
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "ASCII string used to assign a name to the radio link and polarization."
    ::= {llfCircuitEntry 4}

    llfCircuitRowStatus   OBJECT-TYPE
        SYNTAX      RowStatus
        MAX-ACCESS  read-create
        STATUS      current
        DESCRIPTION
            "Status of this row of llfCircuitTable"
    ::= {llfCircuitEntry 5}

--
-------  End of llfCircuitTable

    llfAlarmSeverityCode  OBJECT-TYPE
        SYNTAX      AlarmSeverityCode
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
            "Defines the severity associated to the llfAlarm
             and enables/disables the trap generation on status change event."
        DEFVAL {majorTrapEnable}
    ::= {llf 5}

END