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-- *****************************************************************
-- CISCO-EPC-GATEWAY-MIB.my
--   
-- Apr 2009, Bulbul Hossain
--   
-- Copyright (c) 2009-2012 by Cisco Systems Inc.
-- All rights reserved.
-- *****************************************************************

CISCO-EPC-GATEWAY-MIB DEFINITIONS ::= BEGIN

IMPORTS
    MODULE-IDENTITY,
    OBJECT-TYPE,
    Counter32,
    NOTIFICATION-TYPE,
    Gauge32,
    Unsigned32
        FROM SNMPv2-SMI
    MODULE-COMPLIANCE,
    OBJECT-GROUP,
    NOTIFICATION-GROUP
        FROM SNMPv2-CONF
    SnmpAdminString
        FROM SNMP-FRAMEWORK-MIB
    TruthValue,
    TimeStamp,
    TimeInterval
        FROM SNMPv2-TC
    ciscoMgmt
        FROM CISCO-SMI;


ciscoEpcGatewayMIB MODULE-IDENTITY
    LAST-UPDATED    "201202080000Z"
    ORGANIZATION    "Cisco Systems, Inc."
    CONTACT-INFO
            "Cisco Systems
            Customer Service

            Postal: 170 W Tasman Drive
            San Jose, CA  95134
            USA

            Tel: +1 800 553-NETS

            E-mail: cs-lte@cisco.com"
    DESCRIPTION
        "This MIB module manages the features and configuration
        for PDN Gateway(PGW) and Serving Gateway(SGW) in Evolved
        Packet Core(EPC) architecture.

        The PGW is the permanent IP point-of-attachment for 
        access via the E-UTRAN. The PGW performs IP policy and
        charging enforcement on packet flows to and from mobile 
        devices.

        The SGW is a local mobility anchor for E-UTRAN mobility,
        switching packets between the S5 interface and the GTP
        based S1-U interface for mobiles in connected mode.

        +------------------------------------------------+  
        |                                                |
        |                                                |
        |           +=======+__________                  |
        |           | UTRAN |          |S12              | 
        |           |      +======+    |                 | 
        |           +======|      |    |                 |
        |           +======| SGSN |___ |                 |
        |           |      +======+   ||                 |
        |           | GERAN |  |    S4||                 |
        |           +=======+  |(GTP-C||                 |
        |                    S3| VO,V1||                 |
        |                      |  GTPU||                 |   
        |                      |VO,V1)||                 |
        |                  +======+   ||                 | 
        |              ____| MME  |__ ||                 |
        |              |   +======+  |||                 |
        |        S1-MME|      S11    |||                 |
        |              |     GTP-C   |||                 |
        |              |  (V0,V1,V2) |||                 |
        |+====+ +========+        +======+     +======+  |  +===+
        || UE |-|E-Utran |        | SGW  |     | PGW  |-SGi-|PDN|
        ||    | |(EnodeB)|        |      |     |      |  |  |   |
        |+====+ +========+        +======+     +======+  |  +===+
        |              |            |  |  GTP-C   |      | 
        |              |            |  |(vo,v1,v2)|      | 
        |              |            |  |GTP-C     |      |  
        |              |            |  |  (vo,v1) |      | 
        |              |  GTP v2-u  |  |          |      |
        |               ------------   -----------       |
        |                  (S1-U)          S5            |
        |                                                |
        +------------------------------------------------+

        This architecture supports the non-roaming and roaming
        architectures using GTP based protocol on the PGW and SGW
        with a number of functions. It support high number of
        subscribers with their associated control messages and
        data traffic. Each of this association forms an entry in
        PGW and SGW and is commonly know as bearers.

        The various features used by this architecture and their
        attributes are captured in this MIB:

        1. Overload protection, handles congestion control, SGW and
        PGW represent congestion as a DFP metric considering the
        current CPU, memory usage and number of bearers open. On
        reaching the low congestion threshold, based on the ARP, high
        priority calls are accepted and those with a lower priority
        are rejected. Once the high threshold is reached all new
        calls are rejected.

        2. Buffering agent, the SGW buffers the data packets in the
        downlink direction till the downlink path/peer information is
        ready. It buffers all packets coming from any gateway based
        on the default/configured values of the buffer size, discard
        period and number of packets. Packets will be buffered on a
        per bearer basis and retrieved in the order it was buffered
        using the handle given by the buffering agent initially. If
        the buffer is full then no more bearers will be accepted. 

        Acronyms and terms:

         3GPP     3rd Generation Partnership Project
         DFP      Dynamic Feedback Protocol
         EDGE     Enhanced Data rates for GSM Evolution
         EPC      Evolved Packet Core
         E-UTRAN  Evolved UTRAN
         GERAN    GSM EDGE Radio Access Network
         GPRS     General Packet Radio Service
         GSM      Global System for Mobile communications
         GTP      GPRS Tunneling Protocol
         PDN      Public Data Network
         PGW      PDN Gateway
         SAE      System Architecture Evolution
         SGW      Serving Gateway
         SP GW    An integrated SGW and PGW Gateway
         UE       User Equipment
         UMTS     Universal Mobile Telecommunications System
         UTRAN    UMTS Radio Access Network


        REFERENCE

        [1] 3GPP: Evolved GPRS Tunneling Protocol for Control
            Plane (GTPv2-C). 3GPP TS 29.274 V1.3.1.

        [2] 3GPP: GPRS enhancements for E-UTRAN access.
            3GPP TS 23.401 V8.3.0.

        [3] 3GPP: Circuit Switched fallback in Evolved
            Packet System(EPS). 3GPP TS 23.272."
    REVISION        "201202080000Z"
    DESCRIPTION
        "Added the following object to ciscoEPCGatewayStatus
        cegTotalIdleSessions.

        Added the following objects to cegBufferStats
        cegPacketDropDueToMaxPacketLimit,
        cegPacketDropDueToMaxBufferLimit.

        Added cegSystemStatusGrpSup3 group.
        Added cegPacketDropLimitStatsGrp.
        Deprecated ciscoEpcGatewayMIBComplianceRev2 and
        replaced it with ciscoEpcGatewayMIBComplianceRev3."
    REVISION        "201105100000Z"
    DESCRIPTION
        "Added the following objects to ciscoEpcGatewayStatus
        cegActivatedBearers,
        cegActivatedDedicatedBearers ,
        cegActivatedIpv4DedicatedBearers,
        cegActivatedIpv6DedicatedBearers.

        Added cegSystemStatusGrpSup2 group.
        Deprecated ciscoEpcGatewayMIBComplianceRev1 and
        replaced it with ciscoEpcGatewayMIBComplianceRev2."
    REVISION        "201103040000Z"
    DESCRIPTION
        "Added cegActivatedIpv4v6Bearers,
        cegActivatedGtpv2SgwSessions,
        cegActivatedGtpv2PgwSessions,
        cegActivatedGtpv2SPgwSessions
        to ciscoEpcGatewayStatus.

        Added units for cegActivatedIpv4v6Sessions.

        Added cegSystemStatusGrpSup1 to supplement 
        cegSystemStatusGrp.

        Added ciscoEpcGatewayMIBComplianceRev1 and
        deprecated ciscoEpcGatewayMIBCompliance."
    REVISION        "201006280000Z"
    DESCRIPTION
        "Modified default values for the following objects
        cegCongestionLowThreshold
        cegCongestionHighThreshold"
    REVISION        "201005060000Z"
    DESCRIPTION
        "Modified Default values for the follwing
        objects cegBufferMaxSize, 
        cegBufferDiscardDataTime, 
        cegBufferMaxPacketsPerBuffer. 

        Modified range for the following objects 
        cegBufferDiscardDataTime,
        cegBufferMaxPacketsPerBuffer."
    REVISION        "201004210000Z"
    DESCRIPTION
        "Initial version of this MIB module."
    ::= { ciscoMgmt 731 }


ciscoEpcGatewayMIBNotifications  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayMIB 0 }

ciscoEpcGatewayMIBObjects  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayMIB 1 }

ciscoEpcGatewayStatistics  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayMIBObjects 1 }

cegOverloadProtectionStats  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayStatistics 1 }

cegBufferStats  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayStatistics 2 }

ciscoEpcGatewayConfig  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayMIBObjects 2 }

cegOverloadProtectionConfig  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayConfig 1 }

cegBufferingAgentConfig  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayConfig 2 }

ciscoEpcGatewayStatus  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayMIBObjects 3 }

ciscoEpcGatewayNotifMgmt  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayMIBObjects 4 }


-- Overload Protection statistics

cegCongestionIncomingReqDrops OBJECT-TYPE
    SYNTAX          Counter32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of
        incoming calls dropped at the gateway.

        This counter is incremented when the gateway
        receives an incoming call request at high
        congestion level, and the request is dropped." 
    ::= { cegOverloadProtectionStats 1 }

cegCongestionLowThresholdReached OBJECT-TYPE
    SYNTAX          Counter32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the number of times
        low congestion occurred on the gateway. 

        The value is equal to the number of times 
        the gateway exceeded the congestion threshold
        cegCongestionLowThreshold." 
    ::= { cegOverloadProtectionStats 2 }

cegCongestionHighThresholdReached OBJECT-TYPE
    SYNTAX          Counter32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the number of times
        high congestion occurred on the gateway. 

        The value is equal to the number of times 
        the gateway exceeded the congestion threshold
        cegCongestionHighThreshold." 
    ::= { cegOverloadProtectionStats 3 }

-- Buffering Agent statistics

cegBuffersCreated OBJECT-TYPE
    SYNTAX          Counter32
    UNITS           "buffer"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of
        buffers allocated by buffering agent." 
    ::= { cegBufferStats 1 }

cegBuffersDeleted OBJECT-TYPE
    SYNTAX          Counter32
    UNITS           "buffer"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of
        buffers deallocated by buffering agent." 
    ::= { cegBufferStats 2 }

cegBuffersTimedOut OBJECT-TYPE
    SYNTAX          Counter32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of
        buffers that got timed out, at buffering agent.

        A buffer is timed out when the discard timer
        cegBufferDiscardDataTime expires." 
    ::= { cegBufferStats 3 }

cegBufferPacketsEnqueued OBJECT-TYPE
    SYNTAX          Counter32
    UNITS           "packet"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of
        packets enqueued to the buffering agent." 
    ::= { cegBufferStats 4 }

cegBufferPacketsDequeued OBJECT-TYPE
    SYNTAX          Counter32
    UNITS           "packet"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of
        packets dequeued from the buffering agent." 
    ::= { cegBufferStats 5 }

cegBufferBytesEnqueued OBJECT-TYPE
    SYNTAX          Counter32
    UNITS           "Bytes"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total bytes of
        data enqueued to the buffering agent." 
    ::= { cegBufferStats 6 }

cegBufferBytesDequeued OBJECT-TYPE
    SYNTAX          Counter32
    UNITS           "Bytes"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total bytes of
        data dequeued from the buffering agent." 
    ::= { cegBufferStats 7 }

cegBufferRejMemUnavailable OBJECT-TYPE
    SYNTAX          Counter32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of times, buffer
        allocation is rejected by gateway due to, requested memory
        is greater than cegTotalBufferAvailable." 
    ::= { cegBufferStats 8 }

cegBufferRejLowMem OBJECT-TYPE
    SYNTAX          Counter32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of times, buffer
        allocation is rejected due to, low memory availability in
        the gateway." 
    ::= { cegBufferStats 9 }

cegPacketDropDueToMaxPacketLimit OBJECT-TYPE
    SYNTAX          Counter32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the number of packet drops due to bearer
        maximum packet limit." 
    ::= { cegBufferStats 10 }

cegPacketDropDueToMaxBufferLimit OBJECT-TYPE
    SYNTAX          Counter32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the number of packet drops due to bearer
        maximum buffer limit." 
    ::= { cegBufferStats 11 }

-- Overload Protection configuration

cegCongestionLowThreshold OBJECT-TYPE
    SYNTAX          Unsigned32 (0..100)
    UNITS           "percent"
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
        "This object specifies the low threshold
        for congestion. Congestion DFP metric
        considers the current CPU memory usage
        and number of bearers open. On reaching
        the low congestion threshold, based on the
        ARP, high priority calls are accepted and
        those with a lower priority are rejected."
    DEFVAL          { 95 } 
    ::= { cegOverloadProtectionConfig 1 }

cegCongestionHighThreshold OBJECT-TYPE
    SYNTAX          Unsigned32 (0..100)
    UNITS           "percent"
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
        "This object specifies the high threshold
        for congestion. Congestion DFP metric
        considers the current CPU memory usage
        and number of bearers open. Once the
        high threshold is reached all new calls
        are rejected."
    DEFVAL          { 100 } 
    ::= { cegOverloadProtectionConfig 2 }

-- Buffering Agent configuration

cegBufferingAgentEnabled OBJECT-TYPE
    SYNTAX          TruthValue
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
        "This object specifies the state of
        the buffering agent. 

        'true' - indicates that the buffering agent
                 is enabled.
        'false' - indicates that the buffering agent
                  is disabled."
    DEFVAL          { false } 
    ::= { cegBufferingAgentConfig 1 }

cegBufferMaxSize OBJECT-TYPE
    SYNTAX          Unsigned32 (400..12000)
    UNITS           "Bytes"
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
        "This object represents the maximum size of a
        buffer that can be allocated for a bearer.

        This object is directly dependent on object
        cegBufferingAgentEnabled and is applicable
        only when buffering agent is enabled, that is
        when cegBufferingAgentEnabled is 'true'."
    DEFVAL          { 1024 } 
    ::= { cegBufferingAgentConfig 2 }

cegBufferDiscardDataTime OBJECT-TYPE
    SYNTAX          Unsigned32 (1..300)
    UNITS           "second"
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
        "This object specifies the duration for which
        the buffering agent waits before discarding a
        buffer.

        The discard timer begins when a packet is
        enqueued in the allocated buffer for a bearer.
        Whenever a packet is enqueued for a bearer, the
        discard timer is reset. If the timer expires,
        then the buffer is freed."
    DEFVAL          { 30 } 
    ::= { cegBufferingAgentConfig 3 }

cegBufferMaxPacketsPerBuffer OBJECT-TYPE
    SYNTAX          Unsigned32 (1..15)
    UNITS           "packet"
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
        "This object specifies the maximum
        number of packets allowed per buffer in
        buffering agent.

        Any new incoming packet after this
        value has reached its maximum will be
        dropped."
    DEFVAL          { 5 } 
    ::= { cegBufferingAgentConfig 4 }

-- Gateway Status

cegVersion OBJECT-TYPE
    SYNTAX          SnmpAdminString (SIZE  (1..100))
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the current
        version of the PGW or SGW software
        running on the gateway.

        Display format: 
        <software> : <version>:<release>." 
    ::= { ciscoEpcGatewayStatus 1 }

cegActivatedIpv4Bearers OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "bearer"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total
        activated IPv4 GTPv2 bearers." 
    ::= { ciscoEpcGatewayStatus 2 }

cegActivatedIpv6Bearers OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "bearer"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total
        activated IPv6 GTPv2 bearers." 
    ::= { ciscoEpcGatewayStatus 3 }

cegTotalUsers OBJECT-TYPE
    SYNTAX          Gauge32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of
        users connected to the gateway." 
    ::= { ciscoEpcGatewayStatus 4 }

cegTotalIdleUsers OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "Users"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of users
        currently in ISR state in the gateway." 
    ::= { ciscoEpcGatewayStatus 5 }

cegTotalSuspendedUsers OBJECT-TYPE
    SYNTAX          Gauge32
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of users
        suspended by the gateway.

        A user would be suspended when E-UTRAN coverage is
        overlapped by either GERAN or UTRAN coverage leading
        to a Circuit Switch fallback from E-UTRAN. The Circuit
        Switch fallback enables reuse of voice and other Circuit
        Switch services by reuse of the Circuit Switch
        infrastructure." 
    ::= { ciscoEpcGatewayStatus 6 }

cegActivatedIpv4v6Sessions OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "sessions"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of activated
        IPv4v6 sessions." 
    ::= { ciscoEpcGatewayStatus 7 }

cegActivatedIpv4v6Bearers OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "bearers"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of activated
        IPv4v6 bearers." 
    ::= { ciscoEpcGatewayStatus 10 }

cegActivatedGtpv2SgwSessions OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "sessions"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of activated
        GTPV2 sessions in SGW mode." 
    ::= { ciscoEpcGatewayStatus 11 }

cegActivatedGtpv2PgwSessions OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "sessions"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of activated
        GTPV2 sessions in PGW mode." 
    ::= { ciscoEpcGatewayStatus 12 }

cegActivatedGtpv2SPgwSessions OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "sessions"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of activated
        GTPV2 sessions in SP GW mode." 
    ::= { ciscoEpcGatewayStatus 13 }
-- Overload Protection Status

cegOverloadProtectionStatus  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayStatus 8 }


cegCongestionDfpWeight OBJECT-TYPE
    SYNTAX          Unsigned32 (0..65535)
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the DFP weight value, which
        is the measure of the load on CPU in the gateway." 
    ::= { cegOverloadProtectionStatus 1 }

cegCongestionStatus OBJECT-TYPE
    SYNTAX          INTEGER  {
                        normal(1),
                        low(2),
                        high(3)
                    }
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the gateway congestion
        status.

        normal - The gateway is not in a congestion state.
                 At this state, the value of cegCongestionDfpWeight
                 is less than value of cegCongestionLowThreshold.
        low - The gateway is running in low congestion state.
              At this state, the value of cegCongestionDfpWeight
              is more than value of cegCongestionLowThreshold but 
              less than value of cegCongestionHighThreshold.
        high - The gateway is running in high congestion state.
              At this state, the value of cegCongestionDfpWeight
              is more than value of cegCongestionHighThreshold." 
    ::= { cegOverloadProtectionStatus 2 }

cegCongestionLowLastOccurTime OBJECT-TYPE
    SYNTAX          TimeStamp
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the timestamp at
        which low congestion last occurred on the
        gateway." 
    ::= { cegOverloadProtectionStatus 3 }

cegCongestionLowLastDuration OBJECT-TYPE
    SYNTAX          TimeInterval
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the duration of
        last low congestion." 
    ::= { cegOverloadProtectionStatus 4 }

cegCongestionHighLastOccurTime OBJECT-TYPE
    SYNTAX          TimeStamp
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the timestamp at
        which high congestion last occurred on the
        gateway." 
    ::= { cegOverloadProtectionStatus 5 }

cegCongestionHighLastDuration OBJECT-TYPE
    SYNTAX          TimeInterval
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the duration of
        the last high congestion." 
    ::= { cegOverloadProtectionStatus 6 }
-- Buffering Agent Status

cegBufferStatus  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayStatus 9 }


cegActivatedBearers OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "Bearers"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of default and
        dedicated bearers currently active in the Gateway." 
    ::= { ciscoEpcGatewayStatus 14 }

cegActivatedDedicatedBearers OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "Bearers"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of
        dedicated bearers currently active in the Gateway." 
    ::= { ciscoEpcGatewayStatus 15 }

cegActivatedIpv4DedicatedBearers OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "Bearers"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of IPv4
        dedicated bearers currently active in the Gateway." 
    ::= { ciscoEpcGatewayStatus 16 }

cegActivatedIpv6DedicatedBearers OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "Bearers"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of IPv6
        dedicated bearers currently active in the Gateway." 
    ::= { ciscoEpcGatewayStatus 17 }

cegTotalIdleSessions OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "Sessions"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total number of sessions
        currently in Idle state in the gateway." 
    ::= { ciscoEpcGatewayStatus 18 }

cegTotalInUseBuffers OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "buffer"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total
        number of buffers currently allocated
        for the bearers, by buffering agents." 
    ::= { cegBufferStatus 1 }

cegTotalBufferedPackets OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "packet"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total
        number of packets buffered at present
        in the buffers of buffering agents." 
    ::= { cegBufferStatus 2 }

cegTotalBufferedBytes OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "Bytes"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total
        number of bytes buffered at present
        in the buffers of buffering agents." 
    ::= { cegBufferStatus 3 }

cegTotalBufferAvailable OBJECT-TYPE
    SYNTAX          Gauge32
    UNITS           "Bytes"
    MAX-ACCESS      read-only
    STATUS          current
    DESCRIPTION
        "This object represents the total
        unallocated bytes at buffering agents." 
    ::= { cegBufferStatus 4 }

-- Notification Management objects

cegCongestionHighNotifEnable OBJECT-TYPE
    SYNTAX          TruthValue
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
        "The object controls the generation of
        cegCongestionHighThresholdNotif as follows:
         'true(1)' - the generation of cegCongestionHighThresholdNotif 
                     notifications is enabled.
         'false(2)' - the generation of cegCongestionHighThresholdNotif 
                     notifications is disabled."
    DEFVAL          { false } 
    ::= { ciscoEpcGatewayNotifMgmt 1 }

cegCongestionLowNotifEnable OBJECT-TYPE
    SYNTAX          TruthValue
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
        "The object controls the generation of
        cegCongestionLowThresholdNotif as follows:
         'true(1)' - the generation of cegCongestionLowThresholdNotif 
                     notifications is enabled.
         'false(2)' - the generation of cegCongestionLowThresholdNotif 
                     notifications is disabled."
    DEFVAL          { false } 
    ::= { ciscoEpcGatewayNotifMgmt 2 }

cegCongestionClearNotifEnable OBJECT-TYPE
    SYNTAX          TruthValue
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
        "The object controls the generation of
        cegCongestionClearedNotif as follows:
         'true(1)' - the generation of cegCongestionClearedNotif 
                     notifications is enabled.
         'false(2)' - the generation of cegCongestionClearedNotif 
                     notifications is disabled."
    DEFVAL          { false } 
    ::= { ciscoEpcGatewayNotifMgmt 3 }

-- Notification

cegCongestionHighThresholdNotif NOTIFICATION-TYPE
    OBJECTS         {
                        cegVersion,
                        cegCongestionDfpWeight,
                        cegCongestionStatus,
                        cegCongestionHighThreshold
                    }
    STATUS          current
    DESCRIPTION
        "This notification will be sent when
        the gateway congestion level goes above
        cegCongestionHighThreshold value.

        This gives an indication that the gateway
        is running at high congestion and at this
        state it would reject all new calls."
   ::= { ciscoEpcGatewayMIBNotifications 1 }

cegCongestionLowThresholdNotif NOTIFICATION-TYPE
    OBJECTS         {
                        cegVersion,
                        cegCongestionDfpWeight,
                        cegCongestionStatus,
                        cegCongestionLowThreshold,
                        cegCongestionHighThreshold
                    }
    STATUS          current
    DESCRIPTION
        "This notification will be sent when
        the gateway congestion level goes above
        cegCongestionLowThreshold value.

        This gives an indication that the gateway
        is running at low congestion at this
        state it can accept only the high priority
        calls and those with a lower priority would
        be rejected."
   ::= { ciscoEpcGatewayMIBNotifications 2 }

cegCongestionClearedNotif NOTIFICATION-TYPE
    OBJECTS         {
                        cegVersion,
                        cegCongestionDfpWeight,
                        cegCongestionStatus,
                        cegCongestionLowThreshold
                    }
    STATUS          current
    DESCRIPTION
        "This notification will be sent when
        the gateway congestion level goes below
        cegCongestionLowThreshold value.

        This gives an indication that the gateway
        has recovered from congestion and it can
        accept all calls."
   ::= { ciscoEpcGatewayMIBNotifications 3 }
-- Conformance

ciscoEpcGatewayMIBConformance  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayMIB 3 }

ciscoEpcGatewayMIBCompliances  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayMIBConformance 1 }

ciscoEpcGatewayMIBGroups  OBJECT IDENTIFIER
    ::= { ciscoEpcGatewayMIBConformance 2 }


-- Compliance

ciscoEpcGatewayMIBCompliance MODULE-COMPLIANCE
    STATUS          deprecated
    DESCRIPTION
        "The compliance statement is for the entities
        which implement CISCO-EPC-GATEWAY-MIB.
        This is deprecated by ciscoEpcGatewayMIBComplianceRev1."
    MODULE          -- this module
    MANDATORY-GROUPS {
                        cegSystemStatusGrp,
                        cegOverloadProtectionStatsGrp,
                        cegOverloadProtectionConfigGrp,
                        cegOverloadProtectionStatusGrp,
                        cegOverloadProtectionNotifMgmtGrp,
                        cegOverloadProtectionNotifGrp
                    }

    GROUP           cegBufferingAgentStatsGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering
        agent statistics."

    GROUP           cegBufferingAgentConfigGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering
        agent configuration."

    GROUP           cegBufferingAgentStatusGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering
        agent status."
    ::= { ciscoEpcGatewayMIBCompliances 1 }

ciscoEpcGatewayMIBComplianceRev1 MODULE-COMPLIANCE
    STATUS          deprecated
    DESCRIPTION
        "The compliance statement is for the entities
        which implement CISCO-EPC-GATEWAY-MIB.
        This is deprecated by ciscoEpcGatewayMIBComplianceRev2."
    MODULE          -- this module
    MANDATORY-GROUPS {
                        cegSystemStatusGrp,
                        cegOverloadProtectionStatsGrp,
                        cegOverloadProtectionConfigGrp,
                        cegOverloadProtectionStatusGrp,
                        cegOverloadProtectionNotifMgmtGrp,
                        cegOverloadProtectionNotifGrp,
                        cegSystemStatusGrpSup1
                    }

    GROUP           cegBufferingAgentStatsGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering
        agent statistics."

    GROUP           cegBufferingAgentConfigGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering
        agent configuration."

    GROUP           cegBufferingAgentStatusGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering
        agent status."
    ::= { ciscoEpcGatewayMIBCompliances 2 }

ciscoEPCGatewayMIBComplianceRev2 MODULE-COMPLIANCE
    STATUS          deprecated
    DESCRIPTION
        "The compliance statement is for the entities
        which implement CISCO-EPC-GATEWAY-MIB. 
        This is superceded by ciscoEpcGatewayMIBComplianceRev3."
    MODULE          -- this module
    MANDATORY-GROUPS {
                        cegSystemStatusGrp,
                        cegOverloadProtectionConfigGrp,
                        cegOverloadProtectionNotifMgmtGrp,
                        cegOverloadProtectionStatsGrp,
                        cegOverloadProtectionStatusGrp,
                        cegOverloadProtectionNotifGrp,
                        cegSystemStatusGrpSup1,
                        cegSystemStatusGrpSup2
                    }

    GROUP           cegBufferingAgentStatsGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering agent statistics."

    GROUP           cegBufferingAgentConfigGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering agent configuration."

    GROUP           cegBufferingAgentStatusGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering agent status."
    ::= { ciscoEpcGatewayMIBCompliances 3 }

ciscoEpcGatewayMIBComplianceRev3 MODULE-COMPLIANCE
    STATUS          current
    DESCRIPTION
        "The compliance statement is for the entities
        which implement CISCO-EPC-GATEWAY-MIB."
    MODULE          -- this module
    MANDATORY-GROUPS {
                        cegSystemStatusGrp,
                        cegOverloadProtectionStatsGrp,
                        cegOverloadProtectionConfigGrp,
                        cegOverloadProtectionStatusGrp,
                        cegOverloadProtectionNotifMgmtGrp,
                        cegOverloadProtectionNotifGrp,
                        cegSystemStatusGrpSup1,
                        cegSystemStatusGrpSup2,
                        cegSystemStatusGrpSup3
                    }

    GROUP           cegBufferingAgentStatsGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering agent statistics."

    GROUP           cegBufferingAgentConfigGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering agent configuration."

    GROUP           cegBufferingAgentStatusGrp
    DESCRIPTION
        "This group is mandatory for SGW buffering agent status."

    GROUP           cegBufferingAgentStatsGrpSup1
    DESCRIPTION
        "This group is mandatory for SGW buffering agent statistics."
    ::= { ciscoEpcGatewayMIBCompliances 4 }

-- Units of Conformance

cegSystemStatusGrp OBJECT-GROUP
    OBJECTS         {
                        cegVersion,
                        cegActivatedIpv4Bearers,
                        cegActivatedIpv6Bearers,
                        cegTotalUsers,
                        cegTotalSuspendedUsers,
                        cegActivatedIpv4v6Sessions,
                        cegTotalIdleUsers
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects to provide the
        system status."
    ::= { ciscoEpcGatewayMIBGroups 1 }

cegOverloadProtectionStatsGrp OBJECT-GROUP
    OBJECTS         {
                        cegCongestionIncomingReqDrops,
                        cegCongestionHighThresholdReached,
                        cegCongestionLowThresholdReached
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects to provide the
        overload protection statistics."
    ::= { ciscoEpcGatewayMIBGroups 2 }

cegBufferingAgentStatsGrp OBJECT-GROUP
    OBJECTS         {
                        cegBuffersCreated,
                        cegBufferPacketsEnqueued,
                        cegBufferBytesEnqueued,
                        cegBufferPacketsDequeued,
                        cegBufferBytesDequeued,
                        cegBuffersDeleted,
                        cegBuffersTimedOut,
                        cegBufferRejMemUnavailable,
                        cegBufferRejLowMem
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects to provide the
        buffering agent statistics."
    ::= { ciscoEpcGatewayMIBGroups 3 }

cegOverloadProtectionConfigGrp OBJECT-GROUP
    OBJECTS         {
                        cegCongestionLowThreshold,
                        cegCongestionHighThreshold
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects which configures
        attributes for overload protection."
    ::= { ciscoEpcGatewayMIBGroups 4 }

cegBufferingAgentConfigGrp OBJECT-GROUP
    OBJECTS         {
                        cegBufferingAgentEnabled,
                        cegBufferMaxSize,
                        cegBufferDiscardDataTime,
                        cegBufferMaxPacketsPerBuffer
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects which configures
        the buffering agent."
    ::= { ciscoEpcGatewayMIBGroups 5 }

cegBufferingAgentStatusGrp OBJECT-GROUP
    OBJECTS         {
                        cegTotalInUseBuffers,
                        cegTotalBufferedPackets,
                        cegTotalBufferedBytes,
                        cegTotalBufferAvailable
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects to provide the
        buffering agent status."
    ::= { ciscoEpcGatewayMIBGroups 6 }

cegOverloadProtectionStatusGrp OBJECT-GROUP
    OBJECTS         {
                        cegCongestionDfpWeight,
                        cegCongestionStatus,
                        cegCongestionLowLastOccurTime,
                        cegCongestionLowLastDuration,
                        cegCongestionHighLastOccurTime,
                        cegCongestionHighLastDuration
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects to provide the
        overload protection status."
    ::= { ciscoEpcGatewayMIBGroups 7 }

cegOverloadProtectionNotifMgmtGrp OBJECT-GROUP
    OBJECTS         {
                        cegCongestionHighNotifEnable,
                        cegCongestionLowNotifEnable,
                        cegCongestionClearNotifEnable
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects which controls
        the generation of congestion notification in the system."
    ::= { ciscoEpcGatewayMIBGroups 8 }

cegOverloadProtectionNotifGrp NOTIFICATION-GROUP
   NOTIFICATIONS    {
                        cegCongestionHighThresholdNotif,
                        cegCongestionLowThresholdNotif,
                        cegCongestionClearedNotif
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of notification which informs
        about the congestion level in the system."
    ::= { ciscoEpcGatewayMIBGroups 9 }

cegSystemStatusGrpSup1 OBJECT-GROUP
    OBJECTS         {
                        cegActivatedIpv4v6Bearers,
                        cegActivatedGtpv2SgwSessions,
                        cegActivatedGtpv2PgwSessions,
                        cegActivatedGtpv2SPgwSessions
                    }
    STATUS          current
    DESCRIPTION
        "This group has objects to supplement the cegSystemStatusGrp."
    ::= { ciscoEpcGatewayMIBGroups 10 }

cegSystemStatusGrpSup2 OBJECT-GROUP
    OBJECTS         {
                        cegActivatedBearers,
                        cegActivatedDedicatedBearers,
                        cegActivatedIpv4DedicatedBearers,
                        cegActivatedIpv6DedicatedBearers
                    }
    STATUS          current
    DESCRIPTION
        "This group has objects to supplement the cegSystemStatusGrp"
    ::= { ciscoEpcGatewayMIBGroups 11 }

cegSystemStatusGrpSup3 OBJECT-GROUP
    OBJECTS         { cegTotalIdleSessions }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects which provides the
        details of the EPC Gateway status and supplements the
        cegSystemStatusGrp."
    ::= { ciscoEpcGatewayMIBGroups 12 }

cegBufferingAgentStatsGrpSup1 OBJECT-GROUP
    OBJECTS         {
                        cegPacketDropDueToMaxPacketLimit,
                        cegPacketDropDueToMaxBufferLimit
                    }
    STATUS          current
    DESCRIPTION
        "This group has a collection of objects to provide the buffering
        agent statistics related to packet drops based on max limit."
    ::= { ciscoEpcGatewayMIBGroups 13 }

END