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David Leutgeb
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MIBS/cisco/CISCO-VOA-MIB
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MIBS/cisco/CISCO-VOA-MIB
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-- *****************************************************************
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-- CISCO-VOA-MIB.my
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--
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-- May 2002, Sonal Maheshwari, Mickey Spiegel
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--
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-- Copyright (c) 2002 by cisco Systems, Inc.
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-- All rights reserved.
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-- *****************************************************************
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CISCO-VOA-MIB DEFINITIONS ::= BEGIN
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IMPORTS
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MODULE-IDENTITY, OBJECT-TYPE,
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Integer32 FROM SNMPv2-SMI
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TEXTUAL-CONVENTION,
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TimeStamp FROM SNMPv2-TC
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MODULE-COMPLIANCE,
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OBJECT-GROUP FROM SNMPv2-CONF
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ifIndex FROM IF-MIB
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OpticalIfDirection FROM CISCO-OPTICAL-MONITOR-MIB
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ciscoMgmt FROM CISCO-SMI
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;
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ciscoVoaMIB MODULE-IDENTITY
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LAST-UPDATED "200205070000Z"
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ORGANIZATION "Cisco Systems, Inc."
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CONTACT-INFO "Cisco Systems
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Customer Service
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Postal: 170 W Tasman Drive
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San Jose, CA 95134
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Tel: +1 800 553-NETS
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E-mail: cs-dwdm@cisco.com"
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DESCRIPTION
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"This MIB module defines objects to configure and manage the
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Variable Optical Attenuator (VOA) modules.
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VOA modules are typically used to attenuate channels added
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by a network element, in order to equalize the input power of
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each wavelength before the multiplexed signal consisting of
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all wavelengths is sent through an EDFA. There may be
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a separate VOA per channel, one VOA per band of wavelengths,
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or one VOA for the pass through wavelengths.
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VOA modules are also often used before terminating optical
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wavelengths at optical receivers, in order to avoid receiver
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saturation.
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The VOAs may be present on various modules within the network
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element, for example, on an Optical Add/Drop Multiplexer
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(OADM) module, on the same module as an optical transceiver,
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or on a separate module of its own.
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"
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REVISION "200205070000Z"
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DESCRIPTION
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"The initial revision of this MIB."
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::= { ciscoMgmt 262 }
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-- Textual Conventions
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OpticalPowerInDbm ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"An integer value that gives the optical power level in 1/10ths
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of dBm.
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Example: The value -300 represents a power level of -30.0 dBm.
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The distinguished value of '-1000' indicates that the object
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has not yet been initialized.
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"
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SYNTAX Integer32 ( -400..250 | -1000 )
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OpticalAttenInDb ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"An integer value that gives the attenuation level in
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1/10ths of dB.
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Example: The value 80 represents an attenuation
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level of 8.0 dB.
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"
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SYNTAX Integer32 (0..400)
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-- MIB Object Definitions
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cVoaMIBObjects OBJECT IDENTIFIER ::= { ciscoVoaMIB 1 }
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-- groups in this MIB module
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cVoaBaseGroup OBJECT IDENTIFIER ::= { cVoaMIBObjects 1 }
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-- VOA basic objects
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cVoaTable OBJECT-TYPE
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SYNTAX SEQUENCE OF CVoaEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This table provides objects to configure and control the
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attenuation on VOAs."
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::={ cVoaBaseGroup 1 }
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cVoaEntry OBJECT-TYPE
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SYNTAX CVoaEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"An entry in the cVoaTable provides objects to configure and
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control the attenuation level of a VOA at an interface, for
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a given direction."
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INDEX { ifIndex, cVoaDirection }
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::={ cVoaTable 1 }
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CVoaEntry ::= SEQUENCE {
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cVoaDirection OpticalIfDirection,
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cVoaAttenuationControlMode INTEGER,
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cVoaAttenuation OpticalAttenInDb,
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cVoaAttenuationLastChange TimeStamp,
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cVoaDesiredPower OpticalPowerInDbm
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}
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cVoaDirection OBJECT-TYPE
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SYNTAX OpticalIfDirection
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This is the second index into the cVoaTable and indicates
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the direction for which the attenuation level at this
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interface is being controlled, in this entry."
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::={ cVoaEntry 1 }
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cVoaAttenuationControlMode OBJECT-TYPE
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SYNTAX INTEGER {
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manual(1),
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automatic(2)
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}
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object is used to set the mode of controlling the
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attenuation level of a VOA at an interface.
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When the mode is set to 'manual', the attenuation level is
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configured manually, by setting the desired attenuation
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level in the cVoaAttenuation object. The cVoaDesiredPower
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object does not apply in this case.
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When the mode is set to 'automatic', the attenuation level
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is continuously adjusted to maintain a desired power level,
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after attenuation. The desired optical power level after
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attenuation is configured using the cVoaDesiredPower object.
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The cVoaAttenuation object cannot be configured in this case,
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but it indicates the attenuation level derived from the
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desired power level.
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The automatic mode of controlling attenuation should not be
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used when the monitored power level includes multiple
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wavelengths, since the power level monitor cannot distinguish
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between a decrease in power across all wavelengths, versus a
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loss of power of some but not all wavelengths. If some but not
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all wavelengths go down, this would cause the attenuation level
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to be automatically decreased, leading to an increase in the
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power level of the remaining wavelengths."
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::={ cVoaEntry 2 }
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cVoaAttenuation OBJECT-TYPE
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SYNTAX OpticalAttenInDb
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object indicates the attenuation level applied at the
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interface.
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When the cVoaAttenuationControlMode object is set to 'manual',
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the attenuation level may be specified by setting this object."
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::={ cVoaEntry 3 }
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cVoaAttenuationLastChange OBJECT-TYPE
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SYNTAX TimeStamp
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates the value of sysUpTime at the last
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time the attenuation level was adjusted at this interface,
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in the given direction."
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::={ cVoaEntry 4 }
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cVoaDesiredPower OBJECT-TYPE
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SYNTAX OpticalPowerInDbm
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object indicates the desired optical power level,
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after attenuation, at the interface.
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This object applies only when the cVoaAttenuationControlMode
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object is set to 'automatic'. In this mode, the attenuation
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level is continuously adjusted to maintain the desired
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power level, after attenuation, as specified by this object."
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::={ cVoaEntry 5 }
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-- MIB Conformance Statements
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cVoaMIBConformance OBJECT IDENTIFIER ::= { ciscoVoaMIB 3 }
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cVoaMIBCompliances OBJECT IDENTIFIER ::= { cVoaMIBConformance 1 }
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cVoaMIBGroups OBJECT IDENTIFIER ::= { cVoaMIBConformance 2 }
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cVoaMIBCompliance MODULE-COMPLIANCE
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STATUS current
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DESCRIPTION
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"The compliance statement for platforms that provide
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configuration and control of VOA modules."
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MODULE -- this module
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MANDATORY-GROUPS { cVoaMIBBaseGroup }
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::={ cVoaMIBCompliances 1 }
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-- Units of Conformance
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cVoaMIBBaseGroup OBJECT-GROUP
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OBJECTS {
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cVoaAttenuationControlMode,
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cVoaAttenuation,
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cVoaAttenuationLastChange,
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cVoaDesiredPower
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}
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STATUS current
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DESCRIPTION
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"A collection of mandatory managed objects that provide basic
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configuration and control of the VOA modules."
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::={ cVoaMIBGroups 1 }
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END
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