You are here:

MonitorTools.com > Technical documentation > SNMP > MIB > Cisco > CISCO-APS-MIB
ActiveXperts Network Monitor 2019##AdminFavorites

CISCO-APS-MIB by vendor Cisco

CISCO-APS-MIB file content

The SNMP protocol is used to for conveying information and commands between agents and managing entities. SNMP uses the User Datagram Protocol (UDP) as the transport protocol for passing data between managers and agents. The reasons for using UDP for SNMP are, firstly it has low overheads in comparison to TCP, which uses a 3-way hand shake for connection. Secondly, in congested networks, SNMP over TCP is a bad idea because TCP in order to maintain reliability will flood the network with retransmissions.

Management information (MIB) is represented as a collection of managed objects. These objects together form a virtual information base called MIB. An agent may implement many MIBs, but all agents must implement a particular MIB called MIB-II [16]. This standard defines variables for things such as interface statistics (interface speeds, MTU, octets sent, octets received, etc.) as well as various other things pertaining to the system itself (system location, system contact, etc.). The main goal of MIB-II is to provide general TCP/IP management information.

Use ActiveXperts Network Monitor 2019 to import vendor-specific MIB files, inclusing CISCO-APS-MIB.


Vendor: Cisco
Mib: CISCO-APS-MIB  [download]  [view objects]
Tool: ActiveXperts Network Monitor 2019 [download]    (ships with advanced SNMP/MIB tools)
-- **********************************************************************
-- CISCO-APS-MIB.my: Cisco Automatic Protection Switching (APS) MIB
--
-- Nov 2001, Ashok Chippa, Altaf Shaikh
--
-- Copyright (c) 2001, 2002 by Cisco Systems, Inc.
-- All rights reserved.
-- **********************************************************************

-- Caution.  This MIB is temporary and experimental.  In the 
-- future it will be removed from products, perhaps with short
-- notice, in favor of more standard or generic MIBs.  
-- Application developers should not depend on long-term access
-- to this MIB.

-- This MIB module is based on the Internet Draft 
-- draft-ietf-atommib-sonetaps-mib-05.txt. In terms of object 
-- syntax and semantics, the content of this Cisco MIB is the 
-- same as the corresponding Internet Draft revision.   This Cisco 
-- MIB was created due to the "subject to change" nature of 
-- Internet Drafts. This Cisco MIB may later be deprecated, and 
-- the stable RFC, which may replace the Internet Draft, may be 
-- implemented in its place.


   CISCO-APS-MIB DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY, NOTIFICATION-TYPE,
        OBJECT-TYPE,
        Gauge32, Counter32, Integer32,
        transmission
          FROM SNMPv2-SMI

        TEXTUAL-CONVENTION, RowStatus,
             TimeStamp
          FROM SNMPv2-TC

        SnmpAdminString
          FROM SNMP-FRAMEWORK-MIB

        InterfaceIndex
          FROM IF-MIB

        MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
          FROM SNMPv2-CONF

        ciscoExperiment FROM CISCO-SMI;

   cApsMIB MODULE-IDENTITY
       LAST-UPDATED    "200112261200Z"
       ORGANIZATION    "Cisco Systems, inc"
       CONTACT-INFO
                       "Cisco Systems, Inc.
                        Customer Service
                        Postal: 170 W. Tasman Drive
                                San Jose, CA  95134-1706
                                USA
                        Tel: +1 800 553-NETS
                        Email: gsr-netman@cisco.com"

       DESCRIPTION
           "This management information module supports the
            configuration and management of SONET linear APS groups.
            The definitions and descriptions used in this mib have 
            been derived from Synchronous Optical Network (SONET)
            Transport Systems: Common Generic Criteria, GR-253-CORE
            Revision 2, January 1999,section 5.3. The MIB is also
            consistent with the Multiplex Section Protection (MSP)
            protocol as specified in ITU-T Recommendation G.783, 
            Characteristics of synchronous digital hierarchy (SDH)
            equipment function blocks, Annex A and B.

            This MIB was extracted from internet draft
            draft-ietf-atommib-sonetaps-mib-05.txt for SONET Linear APS
            architectures, by J. Johnson, M. Thatcher, and J. Kuhfeld.
            "
       REVISION      "200112261200Z"
       DESCRIPTION
            "Latest version of the IETF draft."

       REVISION      "200104290000Z"
       DESCRIPTION
            "A draft version of the APS MIB."
       ::= { ciscoExperiment 71 } 

   cApsMIBObjects OBJECT IDENTIFIER
       ::= { cApsMIB 1 }

   cApsMIBNotifications OBJECT IDENTIFIER
       ::= { cApsMIB 2 }

   cApsMIBConformance OBJECT IDENTIFIER
       ::= { cApsMIB 3 }

   CApsK1K2 ::= TEXTUAL-CONVENTION
       STATUS current
       DESCRIPTION
           "This Textual Convention describes an object that stores
            a SONET K1 and K2 byte Aps protocol field. 
            K1 is located in the first octet, K2 is located in
            the second octet. Bits are numbered from left to right,
            with the most significant bit being the leftmost.

            Bits 1-4 of the K1 byte indicate a request.

            1111  Lockout of Protection
            1110  Forced Switch
            1101  SF - High Priority
            1100  SF - Low Priority
            1011  SD - High Priority
            1010  SD - Low Priority
            1001  not used
            1000  Manual Switch
            0111  not used
            0110  Wait-to-Restore
            0101  not used
            0100  Exercise
            0011  not used
            0010  Reverse Request
            0001  Do Not Revert
            0000  No Request

            Bits 5-8 of the K1 byte indicate the channel associated 
            with the request defined in bits 1-4.

            0000 is the Null channel.
            1-14 are working channels.
            15   is the extra traffic channel

            Bits 1-4 of the K2 byte indicate a channel. The channel is
            defined with the same syntax as K1 Bits 5-8. 

            Bit 5 of the K2 byte indicates the
            architecture.

            0 if the architecture is 1+1
            1 if the architecture is 1:n

            Bits 6-8 of the K2 byte indicates the
            mode.

            000 - 011 are reserved for future use
            100  indicates the mode is unidirectional
            101  indicates the mode is bidirectional
            110  RDI-L
            111  AIS-L "
       REFERENCE
           "Bellcore (Telcordia Technologies) GR-253-CORE, 
            Issue 2,Revision 2 (January 1999), 5.3.5."
       SYNTAX      OCTET STRING (SIZE (2))

   CApsSwitchCommand ::= TEXTUAL-CONVENTION
       STATUS       current
       DESCRIPTION
           "An Aps switch command allows a user to perform protection
            switch actions.

            The Switch command values are:

            noCmd

            This value should be returned by a read request when no 
            switch command has been written to the object in question
            since initialization. This value may not be used in a 
            write operation.

            clear

            Clears all of the switch commands listed below for the 
            specified channel.

            lockoutOfProtection

            Prevents any of the working channels from switching to the
            protection line. The specified channel should be the 
            protection channel.

            forcedSwitchWorkToProtect

            Switches the specified working channel to the protection 
            line.

            forcedSwitchProtectToWork

            Switches the working channel back from the protection
            line to the working line. The specified channel should be
            the protection channel.

            manualSwitchWorkToProtect

            Switches the specified working channel to the protection 
            line.

            manualSwitchProtectToWork

            Switches the working channel back from the protection
            line to the working line. The specified channel should be
            the protection channel.

            exercise

            Exercises the protocol for a protection switch of the 
            specified channel by issuing an Exercise request for that
            channel and checking the response on the Aps channel."
       SYNTAX       INTEGER {
                             noCmd(1),
                             clear(2),
                             lockoutOfProtection(3),
                             forcedSwitchWorkToProtect(4),
                             forcedSwitchProtectToWork(5),
                             manualSwitchWorkToProtect(6),
                             manualSwitchProtectToWork(7),
                             exercise(8)
                             }

   CApsControlCommand ::= TEXTUAL-CONVENTION
       STATUS       current
       DESCRIPTION
           "An APS control command applies only to LTE that support
            the 1:n architecture and performs the following actions.


            The Control command values are:

            noCmd

            This value should be returned by a read request when no 
            control command has been written to the object in question
            since initialization. This value may not be used in a write
            operation.

            lockoutWorkingChannel

            Prevents the specified working channel from switching to
            the protection line.

            clearLockoutWorkingChannel

            Clears the lockout a working channel command for the 
            channel specified."
       SYNTAX       INTEGER {
                             noCmd(1),
                             lockoutWorkingChannel(2),
                             clearLockoutWorkingChannel(3)
                            }


   --
   -- APS Configuration Table
   --
   -- This table supports the addition, configuration and deletion 
   -- of groups.
   --
   cApsConfig   OBJECT IDENTIFIER ::= { cApsMIBObjects 1 }

   cApsConfigGroups OBJECT-TYPE
       SYNTAX      Gauge32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The count of APS groups. This count includes all rows
            in cApsConfigTable."
       ::= { cApsConfig 1 }

    cApsConfigTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF  CApsConfigEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists the APS groups that have been 
            configured on the system."
       ::= { cApsConfig 2 }

    cApsConfigEntry OBJECT-TYPE
       SYNTAX       CApsConfigEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "A conceptual row in the  cApsConfigTable."
       INDEX { IMPLIED  cApsConfigName }
       ::= { cApsConfigTable  1 }

    CApsConfigEntry ::= SEQUENCE {
        cApsConfigName                  SnmpAdminString,
        cApsConfigRowStatus             RowStatus,
        cApsConfigMode                  INTEGER,
        cApsConfigRevert                INTEGER,
        cApsConfigDirection             INTEGER,
        cApsConfigExtraTraffic          INTEGER,
        cApsConfigSdBerThreshold        Integer32,
        cApsConfigSfBerThreshold        Integer32,
        cApsConfigWaitToRestore         Integer32,
        cApsConfigCreationTime          TimeStamp
    }

    cApsConfigName OBJECT-TYPE
       SYNTAX      SnmpAdminString (SIZE (1..32))
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A textual name for the APS group.
           "
       ::= { cApsConfigEntry 1 }

    cApsConfigRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this APS group entry.

            An entry may not exist in the active state unless all
            objects in the entry have an appropriate value. Also,
            all associated  cApsChanConfigEntry rows must 
            represent a set of consecutive channel numbers 
            beginning with 0 or 1, depending on the selected
            architecture.

            When set to notInService changes may be made to
            cApsConfigMode, cApsConfigRevert,  
            cApsConfigDirection,  cApsConfigExtraTraffic,
            cApsConfigSdBerThreshold, cApsConfigSfBerThreshold,
            and  cApsConfigWaitToRestore. Also, associated
            cApsChanConfigTable objects may be added, 
            deleted and modified."

       ::= { cApsConfigEntry 2 }

    cApsConfigMode OBJECT-TYPE
       SYNTAX      INTEGER {
                           onePlusOne(1),
                           oneToN(2),
                           onePlusOneCompatible(3),
                           onePlusOneOptimized(4)
                           }
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The architecture of the APS group.

            onePlusOne

            The 1+1 architecture permanently bridges the working
            line to the protection line.

            oneToN

            The 1:n architecture allows one protection channel to
            protect up to n working channels. When a fault is detected
            on one of the n working channels that channel is bridged
            over the protection channel.

            onePlusOneCompatible

            This refers to 1 + 1 bidirectional switching compatible
            with 1:n bidirectional switching as specified in ITU-T
            Recommendation G.783 (04/97) section A.3.4.1. Since this
            mode necessitates bidirectional switching,
            cApsConfigDirection must be set to bidirectional 
            whenever onePlusOneCompatible is set.

            onePlusOneOptimized

            This refers to 1 + 1 bidirectional switching optimized
            for a network using predominantly 1 + 1 bidirectional
            switching as specified in ITU-T Recommendation G.783 
            (04/97) section B.1. Since this mode necessitates 
            bidirectional switching,  cApsConfigDirection must
            be set to bidirectional whenever onePlusOneOptimized 
            is set.

            This object may not be modified if the associated
            cApsConfigRowStatus object is equal to active(1)."
       DEFVAL {onePlusOne}
       ::= { cApsConfigEntry 3 }

    cApsConfigRevert OBJECT-TYPE
       SYNTAX      INTEGER { nonrevertive(1), revertive(2) }
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The revertive mode of the APS group.

            nonrevertive

            Traffic remains on the protection line until another 
            switch request is received.

            revertive

            When the condition that caused a switch to the 
            protection line has been cleared the signal is switched
            back to the working line. Since switching is revertive
            with the 1:n architecture,  cApsConfigRevert must 
            be set to revertive if cApsConfigMode is set 
            to oneToN.

            Switching may optionally be revertive with the 1+1 
            architecture.


            This object may not be modified if the associated
            cApsConfigRowStatus object is equal to active(1).
            "
       DEFVAL { nonrevertive }
       ::= { cApsConfigEntry 4 }

    cApsConfigDirection OBJECT-TYPE
       SYNTAX      INTEGER { unidirectional(1), bidirectional(2) }
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The directional mode of the APS group.

            unidirectional
  
            The unidirectional mode provides protection in one 
            direction.

            bidirectional

            The bidirectional mode provides protection in both
            directions.

            This object may not be modified if the associated
            cApsConfigRowStatus object is equal to active(1)."
       DEFVAL {unidirectional}
       ::= { cApsConfigEntry 5 }

    cApsConfigExtraTraffic OBJECT-TYPE
       SYNTAX      INTEGER { enabled(1), disabled(2) }
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "This object enables or disables the transfer of extra 
            traffic on the protection channel in a 1:n architecture.
            This object must be set to disabled if the architecture
            is 1+1. It may be necessary to disable this in order to
            interwork with other SONET network elements that don't
            support extra traffic.

            This object may not be modified if the associated
            cApsConfigRowStatus object is equal to active(1)."
       DEFVAL { disabled }
       ::= { cApsConfigEntry 6 }

    cApsConfigSdBerThreshold OBJECT-TYPE
       SYNTAX      Integer32 (5..9)
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The Signal Degrade Bit Error Rate.

            The negated value of this number is used as the exponent
            of 10 for computing the threshold value for the Bit Error
            Rate (BER). For example, a value of 5 indicates a BER
            threshold of 10^-5.

            This object may be modified if the associated
            cApsConfigRowStatus object is equal to active(1)."
       DEFVAL { 5 }
       ::= { cApsConfigEntry 7 }

    cApsConfigSfBerThreshold OBJECT-TYPE
       SYNTAX      Integer32 (3..5)
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The Signal Failure Bit Error Rate.

            The negated value of this number is used as the exponent
            of 10 for computing the threshold value for the Bit Error
            Rate (BER). For example, a value of 5 indicates a BER
            threshold of 10^-5.

            This object may be modified if the associated
            cApsConfigRowStatus object is equal to active(1)."
       DEFVAL { 3 }
       ::= { cApsConfigEntry 8 }

    cApsConfigWaitToRestore OBJECT-TYPE
       SYNTAX      Integer32 (0..720)
       UNITS       "seconds"
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The Wait To Restore period in seconds.

            After clearing of a condition that necessitated an
            automatic switch, the wait to restore period must elapse
            before reverting. This is intended to avoid rapid switch
            oscillations.

            GR-253-CORE specifies a Wait To Restore range of 5 to 12

            minutes. G.783 defines a 5 to 12 minute Wait To Restore
            range in section 5.4.1.1.3, but also allows for a shorter
            WTR period in  Table 2-1,
            WaitToRestore value (MI_WTRtime: 0..(5)..12 minutes).

            This object may not be modified if the associated
             cApsConfigRowStatus object is equal to active(1)."
       DEFVAL { 300 }
       ::= { cApsConfigEntry 9 }

    cApsConfigCreationTime OBJECT-TYPE
       SYNTAX      TimeStamp
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The value of sysUpTime at the time the row was
            created"
       ::= { cApsConfigEntry 10 }


   --
   -- APS Status Table
   --
   -- This table provides APS group statistics.
   --


    cApsStatusTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF  CApsStatusEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table provides status information about APS groups
            that have been configured on the system."
       ::= { cApsMIBObjects 2 }

    cApsStatusEntry OBJECT-TYPE
       SYNTAX       CApsStatusEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the  cApsStatusTable. Entries
            in this table are created as a side effect of row
            addition in cApsConfigTable."
       INDEX { IMPLIED  cApsConfigName}
       ::= { cApsStatusTable  1 }

    CApsStatusEntry ::= SEQUENCE {
        cApsStatusK1K2Rcv               CApsK1K2,
        cApsStatusK1K2Trans             CApsK1K2,
        cApsStatusCurrent               BITS,
        cApsStatusModeMismatches        Counter32,
        cApsStatusChannelMismatches     Counter32,
        cApsStatusPSBFs                 Counter32,
        cApsStatusFEPLFs                Counter32,
        cApsStatusSwitchedChannel       Integer32
    }

    cApsStatusK1K2Rcv OBJECT-TYPE
       SYNTAX       CApsK1K2
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The current value of the K1 and K2 bytes received on
            the protection channel."
       ::= { cApsStatusEntry 1 }

    cApsStatusK1K2Trans OBJECT-TYPE
       SYNTAX         CApsK1K2
       MAX-ACCESS    read-only
       STATUS        current
       DESCRIPTION
           "The current value of the K1 and K2 bytes transmitted 
            on the protection channel."
       ::= { cApsStatusEntry 2 }

    cApsStatusCurrent OBJECT-TYPE
       SYNTAX      BITS {
                         modeMismatch(0),
                         channelMismatch(1),
                         psbf(2),
                         feplf(3),
                         extraTraffic(4)
                        }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The current status of the APS group.
  
            modeMismatch
   
            Modes other than 1+1 unidirectional monitor protection
            line K2 bit 5, which indicates the architecture and K2
            bits 6-8, which indicate if the mode is unidirectional
            or bidirectional. A conflict between the current local
            mode and the received K2 mode information constitutes
            a mode mismatch.

            channelMismatch

            This bit indicates a  mismatch between the transmitted
            K1 channel and the received K2 channel has been detected.

            psbf

            This bit indicates a Protection Switch Byte Failure (PSBF)
            is in effect. This condition occurs when either an 
            inconsistent APS byte or an invalid code is detected. An 
            inconsistent APS byte occurs when no three consecutive K1
            bytes of the last 12 successive frames are identical,
            starting with the last frame containing a previously 
            consistent byte. An invalid code occurs when the incoming
            K1 byte contains an unused code or a code irrelevant for
            the specific switching operation (e.g., Reverse Request 
            while no switching request is outstanding) in three 
            consecutive frames. An invalid code also occurs when the
            incoming K1 byte contains an invalid channel number in 
            three consecutive frames.

            feplf

            Modes other than 1+1 unidirectional monitor the K1 byte
            for Far-End Protection-Line failures. A Far-End
            Protection-Line defect is declared based on receiving
            SF on the protection line.

            extraTraffic

            This bit indicates whether extra traffic is currently being
            accepted on the protection line."
       ::= { cApsStatusEntry 3 }

    cApsStatusModeMismatches OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "A count of Mode Mismatch conditions."
       ::= { cApsStatusEntry 4 }

    cApsStatusChannelMismatches OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "A count of Channel Mismatch conditions."
       ::= { cApsStatusEntry 5 }

    cApsStatusPSBFs OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "A count of Protection Switch Byte Failure conditions.
            This condition occurs when either an inconsistent APS
            byte or an invalid code is detected. An inconsistent
            APS byte occurs when no three consecutive K1 bytes of
            the last 12 successive frames are identical, starting
            with the last frame containing a previously consistent
            byte. An invalid code occurs when the incoming K1 byte
            contains an unused code or a code irrelevant for the
            specific switching operation (e.g., Reverse Request
            while no switching request is outstanding) in three 
            consecutive frames. An invalid code also occurs when 
            the incoming K1 byte contains an invalid channel number
            in three consecutive frames."
       ::= { cApsStatusEntry 6 }

    cApsStatusFEPLFs OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "A count of Far-End Protection-Line Failure conditions.
            This condition is declared based on receiving SF on
            the protection line in the K1 byte."
       ::= { cApsStatusEntry 7 }

    cApsStatusSwitchedChannel OBJECT-TYPE
       SYNTAX     Integer32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "This field is set to the number of the channel that is
            currently switched to protection. The value 0 indicates
            no channel is switched to protection. The values 1-14
            indicate that working channel is switched to protection."
       ::= { cApsStatusEntry 8 }
   --
   -- APS Map Group
   --
   -- Lists the SONET LTE interfaces that may be used to create APS
   -- groups.
   --

    cApsMap    OBJECT IDENTIFIER ::= { cApsMIBObjects 3 }

    cApsChanLTEs OBJECT-TYPE
       SYNTAX      Gauge32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The count of SONET LTE interfaces on the system. Each
            interface that is included has an ifType value of 
            sonet(39)."
       ::= { cApsMap 1 }

    cApsMapTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF  CApsMapEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists the SONET LTE interfaces on the system.
            Each interface that is listed has an ifType value of
            sonet(39)."
       ::= { cApsMap 2 }

    cApsMapEntry OBJECT-TYPE
       SYNTAX       CApsMapEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the  cApsMapTable."
       INDEX { cApsMapIfIndex }
       ::= { cApsMapTable  1 }

    CApsMapEntry ::= SEQUENCE {
        cApsMapIfIndex               InterfaceIndex,
        cApsMapGroupName             SnmpAdminString,
        cApsMapChanNumber            Integer32
        }

    cApsMapIfIndex OBJECT-TYPE
       SYNTAX     InterfaceIndex
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
           "The Interface Index assigned to a SONET LTE. This is
            an interface with ifType sonet(39)."
       ::= { cApsMapEntry 1 }

    cApsMapGroupName OBJECT-TYPE
       SYNTAX      SnmpAdminString (SIZE (0..32))
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "A textual name for the APS group which this channel is
            included in. If the channel is not part of an APS group
            this value is set to a string of size 0.

            When an instance of  cApsChanConfigIfIndex is set
            equal to an instance of  cApsMapIfIndex,
            cApsMapGroupName is set equal to the corresponding
            value of  cApsChanConfigGroupName.

            If the  cApsMapIfIndex ceases to be equal to an
            instance of cApsChanConfigIfIndex, either because
            of a change in the value of cApsChanConfigIfIndex,
            or because of row deletion in the CApsChanConfigTable,
            cApsMapGroupName is set to a string of size 0.
           "
       ::= { cApsMapEntry 2 }

    cApsMapChanNumber OBJECT-TYPE
       SYNTAX     Integer32 (-1..14)
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
       "This field is set to a unique channel number within an APS
        group. The value 0 indicates the null channel. The values 
        1-14 define a working channel. If the SONET LTE is not part
        of an APS group this value is set to -1.

        When an instance of cApsChanConfigIfIndex is set equal
        to an instance of cApsMapIfIndex, cApsMapChanNumber
        is set equal to the corresponding value of
        cApsChanConfigNumber.

        If the  cApsMapIfIndex ceases to be equal to an instance
        of cApsChanConfigIfIndex, either because of a change in
        the value of cApsChanConfigIfIndex, or because of row
        deletion in the CApsChanConfigTable, cApsMapChanNumber
        is set to -1."
       ::= { cApsMapEntry 3 }
   --
   -- APS Channel Configuration Table
   --
   -- This table supports the addition, configuration and deletion of
   -- channels in APS groups.
   --


    cApsChanConfigTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF  CApsChanConfigEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists the APS channels that have been 
            configured in APS groups."
       ::= { cApsMIBObjects 4 }

    cApsChanConfigEntry OBJECT-TYPE
       SYNTAX       CApsChanConfigEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the  cApsChanConfigTable."
       INDEX { cApsChanConfigGroupName,
               cApsChanConfigNumber }
       ::= { cApsChanConfigTable  1 }

    CApsChanConfigEntry ::= SEQUENCE {
        cApsChanConfigGroupName             SnmpAdminString,
        cApsChanConfigNumber                Integer32,
        cApsChanConfigRowStatus             RowStatus,
        cApsChanConfigIfIndex               InterfaceIndex,
        cApsChanConfigPriority              INTEGER
        }

    cApsChanConfigGroupName OBJECT-TYPE
       SYNTAX      SnmpAdminString (SIZE (1..32))
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A textual name for the APS group which this channel is
            included in."
       ::= { cApsChanConfigEntry 1 }

    cApsChanConfigNumber OBJECT-TYPE
       SYNTAX     Integer32 (0..14)
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
       "This field is set to a unique channel number within an APS
        group. The value 0 indicates the null channel. The values
        1-14 define a working channel.

        This field must be assigned a unique number within the group."
       ::= { cApsChanConfigEntry 2 }

    cApsChanConfigRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this APS channel entry.

           An entry may not exist in the active state unless all
           objects in the entry have an appropriate value.

           A row in the  cApsChanConfigTable may not be created,
           deleted, set to notInService or otherwise modified if the
           cApsChanConfigGroupName value is equal to an
           cApsConfigName value and the associated
           cApsConfigRowStatus object is equal to active. However,
           if the  cApsConfigRowStatus object is equal to 
           notInService, a row may be created, deleted or modified.
           In other words, a channel may not be added, deleted or 
           modified if the group is active.

           A row may be created with an  cApsChanConfigGroupName
           value that is not equal to any existing instance of
           cApsConfigName. This action is the initial step in
           adding a SONET LTE to a new APS group.

           If this object is set to destroy, the associated instance
           of  cApsMapGroupName will be set to a string of size
           0 and the  cApsMapChanNumber will be set to -1. The
           channel status entry will also be deleted by this action.

           cApsChanConfigNumber must be set to a unique channel
           number within the APS group. The value 0 indicates the
           null channel. The values 1-14 define a working channel.
           When an attempt is made to set the  corresponding
           cApsConfigRowStatus field to  active the
           cApsChanConfigNumber values of all entries with
           equal cApsChanConfigGroupName fields must represent a
           set of consecutive integer values beginning with 0 or 1,
           depending on the architecture of the group, and ending with
           n, where n is  greater than or equal to 1 and less than or
           equal to 14. Otherwise, the error inconsistentValue is
           returned to the  cApsConfigRowStatus set attempt.
           "
       ::= { cApsChanConfigEntry 3 }

    cApsChanConfigIfIndex OBJECT-TYPE
       SYNTAX     InterfaceIndex
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
           "The Interface Index assigned to a SONET LTE. This is an
            interface with ifType sonet(39). The value of this object
            must be unique among all instances of
            cApsChanConfigIfIndex. In other words, a particular
            SONET LTE can only be configured n one APS group.

            This object cannot be set if the  
            cApsChanConfigGroupName instance associated with this
            row is equal to an instance of cApsConfigName and the
            corresponding cApsConfigRowStatus object is set to 
            active. In other words this value cannot be changed if the
            APS group is active. However, This value may be changed if
            the cApsConfigRowStatus value is equal to notInService.
            "

       ::= { cApsChanConfigEntry 4 }

    cApsChanConfigPriority OBJECT-TYPE
       SYNTAX     INTEGER {low(1), high(2)}
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
           "The priority of the channel.

            This field deterimines whether high or low priority
            SD and SF codes are used in K1 requests.

            This field is only applicable if the channel is to be
            included in a group using the 1:n architecture. It is 
            not applicable if the channel is to be included in a
            group using the 1+1 architecture, and is ignored
            in that case.

            This object cannot be set if the
            cApsChanConfigGroupName instance associated with
            this row is equal to an instance of  cApsConfigName
            and the corresponding  cApsConfigRowStatus object is
            set to active. In other words this value cannot be
            changed if the APS group is active. However, This value
            may be changed if the cApsConfigRowStatus value is
            equal to notInService.
           "
       DEFVAL { low }
       ::= { cApsChanConfigEntry 5 }
   --
   -- APS Command Table
   --
   -- This table provides the ability to initiate APS commands.
   --

    cApsCommandTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF  CApsCommandEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table allows commands to be sent to configured
            APS groups."
       ::= { cApsMIBObjects 5 }

    cApsCommandEntry OBJECT-TYPE
       SYNTAX       CApsCommandEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the  cApsCommandTable. This
            row exists only if the associated  cApsConfigEntry
            is active."
       INDEX { cApsChanConfigGroupName,
               cApsChanConfigNumber
             }
       ::= { cApsCommandTable  1 }

    CApsCommandEntry ::= SEQUENCE {
        cApsCommandSwitch          CApsSwitchCommand,
        cApsCommandControl         CApsControlCommand
    }

    cApsCommandSwitch OBJECT-TYPE
       SYNTAX       CApsSwitchCommand
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           "Allows the initiation of an APS switch command on the
            APS group and channel specified by the index values.

            If the APS switch command cannot be executed because an
            equal or higer priority request is in effect, an error
            is returned.

            When read this object returns the last command written
            or noCmd if no command has been written to this
            channel since initialization. The return of the last
            command written does not imply that this command is
            currently in effect. This request may have been
            preempted by a higher priority local or remote
            request. In order to determine the current state of the
            APS group it is necessary to read the objects
            cApsStatusK1K2Rcv and  cApsStatusK1K2Trans.

            The value lockoutOfProtection should only be applied
            to the protection line channel since that switch command
            prevents any of the working channels from switching to
            the protection line. Following the same logic,
            forcedSwitchProtectToWork and manualSwitchProtectToWork
            should only be applied to the protection line channel.

            forcedSwitchWorkToProtect and manualSwitchWorkToProtect
            should only be applied to a working channel.
            "
       ::= { cApsCommandEntry 1 }

    cApsCommandControl OBJECT-TYPE
       SYNTAX       CApsControlCommand
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           "Allows the initiation of an APS control command on the
            APS group and channel specified by the index values.

            When read this object returns the last command written
            or noCmd if no command has been
            written to this channel since initialization.

            This object does not apply to the protection line.
            "
       ::= { cApsCommandEntry 2 }

   --
   -- APS Channel Status Table
   --
   -- This table provides APS channel statistics.
   --

    cApsChanStatusTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF  CApsChanStatusEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table contains status information for all SONET
            LTE interfaces that are included in APS groups."
       ::= { cApsMIBObjects 6 }

    cApsChanStatusEntry OBJECT-TYPE
       SYNTAX       CApsChanStatusEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the  cApsChanStatusTable. A row 
            in this table is created as a side effect of row addition
            in the cApsChanConfigTable. The cApsChanStatusTable
            row exists as long as the  cApsChanConfigTable entry
            exists, regardless of whether the associated
            cApsChanConfigRowStatus is active.
            "
       INDEX { cApsChanConfigGroupName, cApsChanConfigNumber }
       ::= { cApsChanStatusTable  1 }

     CApsChanStatusEntry ::= SEQUENCE {
        cApsChanStatusCurrent               BITS,
        cApsChanStatusSignalDegrades        Counter32,
        cApsChanStatusSignalFailures        Counter32,
        cApsChanStatusSwitchovers           Counter32,
        cApsChanStatusLastSwitchover        TimeStamp,
        cApsChanStatusSwitchoverSeconds     Counter32
    }

    cApsChanStatusCurrent OBJECT-TYPE
       SYNTAX     BITS {
                         lockedOut(0),
                         sd(1),
                         sf(2),
                         switched(3)
                        }
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "Indicates the current state of the port.

            lockedOut

            This bit, when applied to a working channel, indicates
            that the channel is prevented from switching to the 
            protection line. When applied to the null channel, this
            bit indicates that no working channel may switch to the
            protection line.

            sd

            A signal degrade condition is in effect.

            sf

            A signal failure condition is in effect.

            switched

            The switched bit is applied to a working channel if that
            channel is currently switched to the protection line.
            "
       ::= { cApsChanStatusEntry 1 }

    cApsChanStatusSignalDegrades OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "A count of Signal Degrade conditions. This
            condition occurs when the line Bit Error Rate
            exceeds the currently configured threshold."
       ::= { cApsChanStatusEntry 2 }

    cApsChanStatusSignalFailures OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "A count of Signal Failure conditions that have been
            detected on the incoming signal. This condition occurs
            when a loss of signal, loss of frame, AIS-L or a Line
            bit error rate exceeding 10^-3 is detected on an
            incoming line."
       ::= { cApsChanStatusEntry 3 }

    cApsChanStatusSwitchovers OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "The number of times this channel has switched to the
            protection line. When queried with index value
            cApsChanConfigNumber set to 0, which is the 
            protection line, this object will return 0."
       ::= { cApsChanStatusEntry 4 }

    cApsChanStatusLastSwitchover OBJECT-TYPE
       SYNTAX     TimeStamp
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "The value of sysUpTime when this channel last completed
            a switch to the protection line. If this channel has
            never switched to the protection line, or this channel
            is the protection line, the value 0  will be returned."
       ::= { cApsChanStatusEntry 5 }

    cApsChanStatusSwitchoverSeconds OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
           "The cumulative Protection Switching Duration (PSD) time
            in seconds. For a working channel, this is the cumulative
            number of seconds that service was carried on the protection
            line.For the protection line, this is the cumulative number
            of seconds that the protection line has been used to carry
            any working channel traffic. This information is only valid
            if revertive switching is enabled. The value 0 will be 
            returned otherwise."
       ::= { cApsChanStatusEntry 6 }

   --
   -- APS EVENTS
   --

    cApsNotificationsPrefix OBJECT IDENTIFIER
        ::= {  cApsMIBNotifications 0 }

    cApsEventSwitchover NOTIFICATION-TYPE
       OBJECTS { cApsChanStatusSwitchovers,
                 cApsChanStatusCurrent
               }
       STATUS  current
       DESCRIPTION
           "An  cApsEventSwitchover notification is sent when the
            value of an instance of cApsChanStatusSwitchovers
            increments."
       ::= { cApsNotificationsPrefix 1 }

    cApsEventModeMismatch NOTIFICATION-TYPE
       OBJECTS { cApsStatusModeMismatches,
                 cApsStatusCurrent
               }
       STATUS  current
       DESCRIPTION
           "An cApsEventModeMismatch notification is sent when
            the value of an instance of cApsStatusModeMismatches
            increments."
       ::= {  cApsNotificationsPrefix 2 }

    cApsEventChannelMismatch NOTIFICATION-TYPE
       OBJECTS { cApsStatusChannelMismatches,
                 cApsStatusCurrent
               }
       STATUS  current
       DESCRIPTION
           "An  cApsEventChannelMismatch notification is sent when
            the value of an instance of cApsStatusChannelMismatches
            increments."
       ::= {  cApsNotificationsPrefix 3 }

    cApsEventPSBF NOTIFICATION-TYPE
       OBJECTS {  cApsStatusPSBFs,  cApsStatusCurrent }
       STATUS  current
       DESCRIPTION
           "An  cApsEventPSBF notification is sent when the
            value of an instance of  cApsStatusPSBFs increments."
       ::= {  cApsNotificationsPrefix 4 }

    cApsEventFEPLF NOTIFICATION-TYPE
       OBJECTS {  cApsStatusFEPLFs,  cApsStatusCurrent }
       STATUS  current
       DESCRIPTION
           "An  cApsEventFEPLFs notification is sent when the
            value of an instance of  cApsStatusFEPLFs increments."
       ::= {  cApsNotificationsPrefix 5 }


   -- conformance information

    cApsGroups      OBJECT IDENTIFIER 
                               ::= { cApsMIBConformance 1 }
    cApsCompliances OBJECT IDENTIFIER
                               ::= { cApsMIBConformance 2 }

    cApsCompliance MODULE-COMPLIANCE
       STATUS  current
       DESCRIPTION
           "The compliance statement for linear APS groups."

       MODULE
       MANDATORY-GROUPS { cApsConfigGeneral, cApsStatusGeneral,
                          cApsChanGeneral
                        }

           OBJECT   cApsConfigMode
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsConfigRevert
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsConfigDirection
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsConfigExtraTraffic
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsConfigSdBerThreshold
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsConfigSfBerThreshold
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsConfigWaitToRestore
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsConfigRowStatus
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsChanConfigIfIndex
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsChanConfigPriority
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT   cApsChanConfigRowStatus
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."


           GROUP        cApsConfigWtr
           DESCRIPTION
               "Implementation of this group is optional for all
                linear APS implementations. The information is
                applicable to groups supporting a configurable
                WTR period."

           GROUP        cApsCommandOnePlusOne
           DESCRIPTION
               "Implementation of this group is optional for all
                linear APS implementations. The information is
                applicable to groups implementing the linear
                APS 1+1 architecture and supporting set operations."

          GROUP        cApsCommandOneToN
           DESCRIPTION
               "Implementation of this group is optional for all
                linear APS implementations. The information is
                applicable to groups implementing the linear
                APS 1:n architecture and supporting set operations."

          GROUP        cApsChanOneToN
           DESCRIPTION
               "Implementation of this group is optional for all
                linear APS implementations. The information is
                applicable to groups implementing the linear
                APS 1:n architecture."

          GROUP        cApsTotalsGroup
           DESCRIPTION
               "Implementation of this group is optional for all
                linear APS implementations."

          GROUP        cApsMapGroup
           DESCRIPTION
               "Implementation of this group is optional for all
                linear APS implementations."

       ::= {  cApsCompliances 1 }

   -- units of conformance

    cApsConfigGeneral    OBJECT-GROUP
       OBJECTS
       {
            cApsConfigMode,
            cApsConfigRevert,
            cApsConfigDirection,
            cApsConfigExtraTraffic,
            cApsConfigSdBerThreshold,
            cApsConfigSfBerThreshold,
            cApsConfigCreationTime,
            cApsConfigRowStatus
       }
       STATUS  current
       DESCRIPTION
           "A collection of  cApsConfigTable objects providing
            configuration information applicable to all linear
            APS groups."
       ::= {  cApsGroups 1 }

    cApsConfigWtr    OBJECT-GROUP
       OBJECTS
       {
            cApsConfigWaitToRestore
       }
       STATUS  current
       DESCRIPTION
           "The  cApsConfigTable object that provides information
            which is applicable to groups supporting a configurable
            WTR period."
       ::= {  cApsGroups 2 }

   --  If set operations are not supported neither of the following
   --  two groups are implemented. If sets are supported only one 
   --  of these groups is implemented for a linear APS group instance.

    cApsCommandOnePlusOne    OBJECT-GROUP
       OBJECTS
       {
            cApsCommandSwitch
       }
       STATUS  current
       DESCRIPTION
           "The   cApsCommandTable object which is applicable
            to groups implementing the linear APS 1+1 architecture.
            Also, set operations must be supported."
       ::= {  cApsGroups 3 }

    cApsCommandOneToN    OBJECT-GROUP
       OBJECTS
       {
            cApsCommandSwitch,
            cApsCommandControl
       }
       STATUS  current
       DESCRIPTION
       "A collection of  cApsCommandTable objects which are 
        applicable to groups implementing the linear APS 1:n 
        architecture. Also, set operations must be supported."
       ::= {  cApsGroups 4 }

    cApsStatusGeneral    OBJECT-GROUP
       OBJECTS
       {
            cApsStatusK1K2Rcv,
            cApsStatusK1K2Trans,
            cApsStatusCurrent,
            cApsStatusModeMismatches,
            cApsStatusChannelMismatches,
            cApsStatusPSBFs,
            cApsStatusFEPLFs,
            cApsStatusSwitchedChannel
       }
       STATUS  current
       DESCRIPTION
           "A collection of  cApsStatusTable objects providing
            status information applicable to all linear APS groups."
       ::= {  cApsGroups 5 }

    cApsChanGeneral    OBJECT-GROUP
       OBJECTS
       {
            cApsChanConfigIfIndex,
            cApsChanConfigRowStatus,
            cApsChanStatusCurrent,
            cApsChanStatusSignalDegrades,
            cApsChanStatusSignalFailures,
            cApsChanStatusSwitchovers,
            cApsChanStatusLastSwitchover,
            cApsChanStatusSwitchoverSeconds
      }
       STATUS  current
       DESCRIPTION
           "A collection of channel objects providing information
            applicable to all linear APS channels."
       ::= {  cApsGroups 6 }

    cApsChanOneToN    OBJECT-GROUP
       OBJECTS
       {
            cApsChanConfigPriority
       }
       STATUS  current
       DESCRIPTION
           "The  cApsChanConfigTable object that provides
            information which is only applicable to groups
            implementing the linear APS 1:n architecture."
       ::= {  cApsGroups 7 }

    cApsTotalsGroup OBJECT-GROUP
       OBJECTS
       {
            cApsConfigGroups,
            cApsChanLTEs
       }
       STATUS  current
       DESCRIPTION
           "A collection of objects providing optional counts of
            configured APS groups and SONET LTE interfaces."
       ::= {  cApsGroups 8 }

    cApsMapGroup OBJECT-GROUP
       OBJECTS
       {
            cApsMapGroupName,
            cApsMapChanNumber
       }
       STATUS  current
       DESCRIPTION
           "A collection of  cApsMapTable objects providing
            a mapping from sonet(39) InterfaceIndex to group name
            and channel number for assigned APS channels and a
            list of unassigned sonet(39) interfaces."
       ::= {  cApsGroups 9 }

    cApsEventOptional NOTIFICATION-GROUP
       NOTIFICATIONS { cApsEventSwitchover,  
                       cApsEventModeMismatch,
                       cApsEventChannelMismatch,
                       cApsEventPSBF,
                       cApsEventFEPLF
                     }
       STATUS    current
       DESCRIPTION
           "A collection of SONET linear APS notifications that may
            optionally be implemented."
       ::= {  cApsGroups 10 }

   END