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CISCO-LINK-ERROR-MONITOR-MIB by vendor Cisco

CISCO-LINK-ERROR-MONITOR-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-LINK-ERROR-MONITOR-MIB.


Vendor: Cisco
Mib: CISCO-LINK-ERROR-MONITOR-MIB  [download]  [view objects]
Tool: ActiveXperts Network Monitor 2019 [download]    (ships with advanced SNMP/MIB tools)
-- ****************************************************                
-- CISCO-LINK-ERROR-MONITOR-MIB.my
--        MIB support for the Link Error Monitor Feature
--
-- Copyright (c) 2004 by Cisco Systems, Inc.
-- All rights reserved.
--
-- ****************************************************

CISCO-LINK-ERROR-MONITOR-MIB DEFINITIONS ::= BEGIN

IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE,
        Unsigned32,
        NOTIFICATION-TYPE
                FROM SNMPv2-SMI

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

        TruthValue,
        TEXTUAL-CONVENTION 
                FROM SNMPv2-TC
   
        ifIndex
                FROM IF-MIB

        ciscoMgmt
                FROM CISCO-SMI;

ciscoLinkErrorMonitorMIB MODULE-IDENTITY
        LAST-UPDATED        "200411190000Z"
        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-lan-switch-snmp@cisco.com"
        DESCRIPTION
                "The MIB module for managing Link Error Monitoring
                Feature on devices. 

                Link Error Monitoring Feature provides a mechanism
                to monitor a certain set of link error counters on 
                an interface and take certain actions when the 
                increase in the error counters between two consecutive 
                samplings exceeds the configurable thresholds 
                consecutively for a certain number of times."   
        REVISION            "200411190000Z"
        DESCRIPTION
                "Initial version of this MIB module."
        ::= { ciscoMgmt 426  }

ciscoLinkErrMonMIBNotifs  OBJECT IDENTIFIER ::=  
                          { ciscoLinkErrorMonitorMIB 0 }

ciscoLinkErrMonMIBObjects OBJECT IDENTIFIER ::=  
                          { ciscoLinkErrorMonitorMIB 1 }

ciscoLinkErrMonMIBConform OBJECT IDENTIFIER ::=  
                          { ciscoLinkErrorMonitorMIB 2 }

clemGlobalObjects         OBJECT IDENTIFIER ::=  
                          { ciscoLinkErrMonMIBObjects 1 }

clemInterfaceObjects      OBJECT IDENTIFIER ::=  
                          { ciscoLinkErrMonMIBObjects 2 }

--
-- Textual Conventions
--
ClemCounterType ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
            "The link error counters on interfaces to be monitored 
            by the Link Error Monitor feature.

            rxcrc -  the counter on the number of received 
                     packets with CRC and alignment errors.

            txcrc -  the counter on the number of transmitted 
                     packets with CRC errors.

            inerrors - the ifInErrors counter as defined in IF-MIB.
            "
    SYNTAX      INTEGER {
                          rxcrc(1),
                          txcrc(2),
                          inerrors(3)
                        }

--
-- clemGlobalObjects
--

clemEnabled OBJECT-TYPE
    SYNTAX      TruthValue 
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
            "Specifies whether the Link Error Monitor Feature is 
            enabled on the device or not." 
    ::= { clemGlobalObjects 1 }

clemSamplingInterval  OBJECT-TYPE
    SYNTAX      Unsigned32
    UNITS       "seconds"
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
            "Specifies the sampling interval to sample the 
            interfaces' monitored link error counters." 
    ::= { clemGlobalObjects 2 }

clemSamplingTimes  OBJECT-TYPE
    SYNTAX      Unsigned32
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION 
            "Specifies the consecutive number of times with 
            error counter increase over thresholds between two 
            consecutive samplings before corresponding notifications 
            can be sent and actions can be taken on an interface." 
    ::= { clemGlobalObjects 3 }
    
clemAction  OBJECT-TYPE
    SYNTAX      INTEGER {
                         errdisable(1),
                         failover(2)
                        }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION 
            "Specifies the action to be taken on an interface
            when the increase in an error counter on that 
            interface between two consecutive sampling 
            exceeds the corresponding clemThresholdHigh for 
            consecutive number of times as specified by 
            clemSamplingTimes. 
            
            errdisable -- the interface is disabled by forcing
                          its link down.  
                            
            failover -- when the interface is a member of a channel 
                        and it is the only operational member in 
                        the channel, then no operation will be taken. 
                        Otherwise, disable the interface by forcing 
                        its link down, i.e., errdisable the interface.  
            "
    ::= { clemGlobalObjects 4 }
    
clemThresholdTable  OBJECT-TYPE          
    SYNTAX       SEQUENCE OF ClemThresholdEntry
    MAX-ACCESS   not-accessible
    STATUS       current
    DESCRIPTION
            "A table containing threshold configuration for
            the monitored link error counters." 
    ::= { clemGlobalObjects 5 }

clemThresholdEntry OBJECT-TYPE
    SYNTAX       ClemThresholdEntry
    MAX-ACCESS   not-accessible
    STATUS       current
    DESCRIPTION
            "An entry containing threshold configuration for 
            each type of link error counter that can be 
            monitored by this feature on the device."
    INDEX { clemThresholdCounterType }
    ::= { clemThresholdTable 1 }

ClemThresholdEntry ::= SEQUENCE {
    clemThresholdCounterType  ClemCounterType,
    clemThresholdLow  Unsigned32,
    clemThresholdHigh Unsigned32 
    }

clemThresholdCounterType  OBJECT-TYPE
    SYNTAX        ClemCounterType
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
            "Indicates the type of link error counter to be 
            monitored."  
    ::= { clemThresholdEntry 1 }

clemThresholdLow  OBJECT-TYPE
    SYNTAX        Unsigned32
    MAX-ACCESS    read-write 
    STATUS        current
    DESCRIPTION
            "Specifies the low threshold for an error counter 
            type.                
            When the increase in this error counter type on 
            an interface between two consecutive sampling exceeds 
            the instance value of clemThresholdLow for this error 
            counter type consecutively for clemSamplingTimes number 
            of times, a clemLowThresholdExceeded notification on 
            that interface will be sent."
    ::= { clemThresholdEntry 2 }

clemThresholdHigh  OBJECT-TYPE
    SYNTAX        Unsigned32
    MAX-ACCESS    read-write 
    STATUS        current
    DESCRIPTION
            "Specifies the high threshold for an error counter 
            type.                
            When the increase in this error counter type on an 
            interface between two consecutive sampling exceeds the 
            instance value of clemThresholdHigh for this error counter 
            type consecutively for clemSamplingTimes number of times, 
            a clemHighThresholdExceeded notification on that interface 
            will be sent. And, the action specified by clemAction 
            will be taken on that interface. The instance value of
            this clemThresholdHigh must be greater than the instance
            value of the clemThresholdLow of the same row."
    ::= { clemThresholdEntry 3 }

clemNotifEnable  OBJECT-TYPE
    SYNTAX      BITS {
                       lowThresholdExceeded(0),
                       highThresholdExceeded(1)
                }  
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION 
            "Indicates whether the generation of a specified 
            notification is enabled or not. If a bit corresponding 
            to a notification is set to 1, then that notification 
            can be generated. 

            lowThresholdExcd -- the clemLowThresholdExceeded 
                                notification.

            highThresholdExcd -- the clemHighThresholdExceeded
                                notification. 
            "
    ::= { clemGlobalObjects 6 }

-- 
-- interface level objects
--
clemIfCounterTable   OBJECT-TYPE
    SYNTAX       SEQUENCE OF ClemIfCounterEntry
    MAX-ACCESS   not-accessible
    STATUS       current
    DESCRIPTION
            "A table containing interface-specific link error 
            monitoring information for each error counter type 
            monitored by the feature." 
    ::= { clemInterfaceObjects 1 }

clemIfCounterEntry OBJECT-TYPE
    SYNTAX       ClemIfCounterEntry
    MAX-ACCESS   not-accessible
    STATUS       current
    DESCRIPTION
            "An entry containing link error monitoring information 
            on each capable interface for each error counter type 
            monitored by the feature."
    INDEX { ifIndex,
            clemIfCounterType }
    ::= { clemIfCounterTable 1 }

ClemIfCounterEntry ::= SEQUENCE {
    clemIfCounterType ClemCounterType,
    clemIfCounterEnable  TruthValue
    }

clemIfCounterType OBJECT-TYPE
    SYNTAX        ClemCounterType
    MAX-ACCESS    not-accessible 
    STATUS        current
    DESCRIPTION
            "Indicates the type of link error counter to be 
            monitored on an interface."  
    ::= { clemIfCounterEntry 1 }

clemIfCounterEnable  OBJECT-TYPE
    SYNTAX        TruthValue
    MAX-ACCESS    read-write
    STATUS        current
    DESCRIPTION
            "Specifies whether the sampling on the corresponding 
            error counter type is enabled on an interface or not."
    ::= { clemIfCounterEntry 2 }

--
-- Notifications
--

clemLowThresholdExceeded  NOTIFICATION-TYPE
    OBJECTS     { clemThresholdLow, ifIndex }
    STATUS      current
    DESCRIPTION
            "This notification will be sent when the increase in 
            an error counter type on an interface between two 
            consecutive sampling exceeds the error counter's 
            clemThresholdLow consecutively for clemSamplingTimes 
            number of times."
    ::= { ciscoLinkErrMonMIBNotifs 1 }
 
clemHighThresholdExceeded  NOTIFICATION-TYPE
    OBJECTS     { clemThresholdHigh, ifIndex }
    STATUS      current
    DESCRIPTION
            "This notification will be sent when the increase in 
            an error counter type on an interface between two 
            consecutive sampling exceeds the error counter's 
            clemThresholdHigh consecutively for clemSamplingTimes 
            number of times."
    ::= { ciscoLinkErrMonMIBNotifs 2 }


--
-- MIB Conformance statements
--

ciscoLinkErrMonMIBCompliances  OBJECT IDENTIFIER ::= 
                               { ciscoLinkErrMonMIBConform 1 }

ciscoLinkErrMonMIBGroups  OBJECT IDENTIFIER ::= 
                               { ciscoLinkErrMonMIBConform 2 }

ciscoLinkErrMonMIBCompliance  MODULE-COMPLIANCE
    STATUS   current
    DESCRIPTION 
            "The compliance statement for CISCO-LINK-ERROR-MONITOR-MIB."
            MODULE -- this module
            MANDATORY-GROUPS { clemGlobalGroup,
                               clemThresholdGroup,
                               clemIfCounterGroup,
                               clemNotificationGroup,
                               clemNotificationControlGroup }
    ::= { ciscoLinkErrMonMIBCompliances 1 }

-- 
-- Units of Conformance
-- 

clemGlobalGroup  OBJECT-GROUP
    OBJECTS {
             clemEnabled,
             clemSamplingInterval,
             clemSamplingTimes,
             clemAction
            }
    STATUS  current
    DESCRIPTION
            "A collection of objects to configure link error 
            monitoring functionality globally for all interfaces
            on the device."
        ::= { ciscoLinkErrMonMIBGroups 1 }

clemThresholdGroup  OBJECT-GROUP
    OBJECTS {
             clemThresholdLow,
             clemThresholdHigh
            }
    STATUS  current
    DESCRIPTION
            "A collection of objects to configure the threshold for
            the monitored error counters by this feature." 
        ::= { ciscoLinkErrMonMIBGroups 2 }

clemIfCounterGroup  OBJECT-GROUP
    OBJECTS {
             clemIfCounterEnable
            }
    STATUS  current
    DESCRIPTION
            "A collection of objects to configure link error
            monitoring functionality at interface level on
            each error counter type."
        ::= { ciscoLinkErrMonMIBGroups 3 }

clemNotificationGroup  NOTIFICATION-GROUP
    NOTIFICATIONS {
                   clemLowThresholdExceeded,
                   clemHighThresholdExceeded
                  }
    STATUS  current
    DESCRIPTION
            "A collection of notifications for link error 
            monitoring feature."
    ::= { ciscoLinkErrMonMIBGroups 4 }

clemNotificationControlGroup OBJECT-GROUP
    OBJECTS {
             clemNotifEnable
            }
    STATUS  current
    DESCRIPTION
            "A collection of objects to control the notification
            generation for link error monitoring feature."  
        ::= { ciscoLinkErrMonMIBGroups 5 }

END