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CTRON-DHCP-MIB by vendor Enterasys Networks Inc

CTRON-DHCP-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 CTRON-DHCP-MIB.


Vendor: Enterasys Networks Inc
Mib: CTRON-DHCP-MIB  [download]  [view objects]
Tool: ActiveXperts Network Monitor 2019 [download]    (ships with advanced SNMP/MIB tools)
CTRON-DHCP-MIB DEFINITIONS ::= BEGIN

        --  ctron-dhcp-mib.txt  Cabletron Dynamic Host Configuration Protocol 
        --  Server MIB.
        --  Revision: 01.00.00
        --  Part Number: 
        --  Date:  July 28, 1997

        --  Cabletron Systems, Inc.
        --  35 Industrial Way, P.O. Box 5005
        --  Rochester, NH 03866-5005
        --  (603) 332-9400
        --  support@ctron.com

        --  This module provides authoritative definitions for part
        --  of the naming tree below:
        --
        --              cabletron { enterprises 52 }
        --
        --  This module will be extended, as additional sub-sections
        --  of this naming tree are defined.
        --

        --  Cabletron Systems reserves the right to make changes in 
        --  specification and other information contained in this document 
        --  without prior notice.  The reader should consult Cabletron Systems
        --  to determine whether any such changes have been made.
        --
        --  In no event shall Cabletron Systems be liable for any incidental, 
        --  indirect, special, or consequential damages whatsoever (including 
        --  but not limited to lost profits) arising out of or related to this
        --  document or the information contained in it, even if Cabletron
        --  Systems has been advised of, known, or should have known, the 
        --  possibility of such damages.
        --
        --  Cabletron grants vendors, end-users, and other interested parties
        --  a non-exclusive license to use this Specification in connection
        --  with the management of Cabletron products.
        --
        --  Copyright August 1997 Cabletron Systems

    --  Abstract
    --
    --  This memo defines management objects which are required to support
    --  Cabletron's implementation of the Dynamic Host Configuration Protocol.
    --  This MIB supports in part RFC1541 and RFC1533.  Specifically, it enables
    --  a device to be configured as a DHCP server, and allows a limited number
    --  of DHCP Options.
 
    --  Structure of MIB
    --
    --  Objects, in this MIB, are arranged into groups.  Each group is organized
    --  as a set of related objects and is described below.
 
    --  The ctDhcpServerStats Group
    --
    --  This group enables DHCP globally, and displays statistics relating
    --  to the overall DHCP entity.  It also allows abandoned addresses to
    --  be recovered.

    --  The ctDhcpInterfaceConfig Group
    --
    --  This group contains information describing the assignment
    --  of interfaces on this device to perform DHCP server functions. 
    --  It allows customization of the server on an interface basis.

    --  The ctDhcpClientStatusTable Group
    --
    --  This group contains information describing some identifying
    --  characteristics which are collected for ACTIVE leases.  The data 
    --  are deleted when the lease expires.


IMPORTS
      OBJECT-TYPE
        FROM RFC-1212
      DisplayString, PhysAddress
        FROM RFC1213-MIB
      nwRtrProtoSuites 
        FROM ROUTER-OIDS
      nwIpRouter, nwIpMibs, nwIpComponents, nwIpClientServices
        FROM CTRON-IP-ROUTER-MIB
      IpAddress, Counter
        FROM RFC1155-SMI;



    ctDhcp                 OBJECT IDENTIFIER ::= { nwIpClientServices 2 }

    --========       group definitions           =============
 
    ctDhcpServerStats          OBJECT IDENTIFIER ::= { ctDhcp 1 }

    ctDhcpInterfaceConfig      OBJECT IDENTIFIER ::= { ctDhcp 2 }

    ctDhcpClientStatusTable    OBJECT IDENTIFIER ::= { ctDhcp 3 }

--====================================================================

    --
 --========        ctDhcpServerStats group       =============--
    --

--      This table enables DHCP globally, and displays statistics relating
--      to the overall DHCP entity.

        ctDhcpAdminStatus       OBJECT-TYPE
                SYNTAX  INTEGER {
                        disabled(1),
                        enabled(2)
                        }
                ACCESS  read-write
                STATUS  mandatory
                DESCRIPTION
                        "This object is used to enable or disable the DHCP
                        server function for the entire device.  This object 
                        must be set to enabled for the server to function on 
                        this device."
                ::= { ctDhcpServerStats 1}

        ctDhcpOperStatus        OBJECT-TYPE
                SYNTAX  INTEGER {
                        disabled(1),
                        enabled(2)
                        }
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "Indicates the current operating status of the DHCP
                        server function on this device.  The value of 
                        ctDhcpIfOperStatus for at least one interface must be 
                        set to enabled for this object to be enabled."
                ::= { ctDhcpServerStats 2}

        ctDhcpDiscovers OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of discover messages 
                        received by the DHCP server since the last reset."
                ::= { ctDhcpServerStats 3}

        ctDhcpOffers    OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of offer messages 
                        sent by the DHCP server since the last reset."
                ::= { ctDhcpServerStats 4}

        ctDhcpRequests  OBJECT-TYPE
                SYNTAX  Counter 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of request messages 
                        received by the DHCP server since the last reset."
                ::= { ctDhcpServerStats 5}

        ctDhcpDeclines  OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of decline messages 
                        received by the DHCP server since the last reset."
                ::= { ctDhcpServerStats 6}

        ctDhcpReleases  OBJECT-TYPE
                SYNTAX  Counter 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of release messages 
                        received by the DHCP server since the last reset."
                ::= { ctDhcpServerStats 7}

        ctDhcpAcks      OBJECT-TYPE
                SYNTAX  Counter 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of ack messages 
                        sent by the DHCP server since the last reset."
                ::= { ctDhcpServerStats 8}

        ctDhcpNaks      OBJECT-TYPE
                SYNTAX  Counter 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of nak messages 
                        sent by the DHCP server since the last reset."
                ::= { ctDhcpServerStats 9}

        ctDhcpOtherServers       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of messages 
                        received by the DHCP server since the last reset
                        which were directed to other servers."
                ::= { ctDhcpServerStats 10}

        ctDhcpProtocolErrors       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of protocol errors detected 
                        by the DHCP server since the last reset."
                ::= { ctDhcpServerStats 11}

        ctDhcpServerTime       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of seconds that this DHCP 
                        server has been in operation since its non-volatile 
                        memory was last cleared."
                ::= { ctDhcpServerStats 12}

        ctDhcpNoOfActiveClients       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the number of clients who currently
                        have network addresses assigned by this DHCP server."
                ::= { ctDhcpServerStats 13}

        ctDhcpReclaimIP OBJECT-TYPE
                SYNTAX  IpAddress
                ACCESS  read-write
                STATUS  mandatory
                DESCRIPTION
                        "This object is a method of reclaiming abandoned IP
                        addresses.  The value reads as 0.0.0.0.  Writing to
                        it with an IP address of a client on the active list
                        will remove the entry from the list.  It is used to 
                        recover addresses with long leases from clients who
                        have left the network without sending a release notice."
                ::= { ctDhcpServerStats 14 }

    --
 --========        ctDhcpInterfaceConfig group       =============--
    --

--      This table structure contains information describing the assignment
--      of interfaces on this device to perform DHCP server functions.

        ctDhcpServerIfTable OBJECT-TYPE
                SYNTAX      SEQUENCE OF CtDhcpServerIfEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "This table contains an entry for each port of a
                        DHCP server which is eligible to perform DHCP functions. 
                        The table is indexed by ctDhcpIfIndex, which indicates
                        the value of the MIB 2 ifindex which identifies the
                        device's interface for which the entry exists."
                ::= { ctDhcpInterfaceConfig 1 }
        
        ctDhcpServerIfEntry OBJECT-TYPE
                SYNTAX      CtDhcpServerIfEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "A description of the configuration parameters for a
                         single interface on the DHCP server."
                INDEX       { ctDhcpIfIndex }
                ::= { ctDhcpServerIfTable 1 }
        
        CtDhcpServerIfEntry ::=
                SEQUENCE {
                        ctDhcpIfIndex
                        INTEGER,
                        ctDhcpIfAdminStatus
                        INTEGER,
                        ctDhcpIfOperStatus
                        INTEGER,
                        ctDhcpIfServerAddress
                        IpAddress,
                        ctDhcpIfNetworkAddress
                        IpAddress,
                        ctDhcpIfSubnetMask
                        IpAddress,
                        ctDhcpIfLowestaddress
                        IpAddress,
                        ctDhcpIfHighestAddress
                        IpAddress,
                        ctDhcpIfAddressesUsed
                        INTEGER,
                        ctDhcpIfAddressesFree
                        INTEGER,
                        ctDhcpIfLeasePeriod
                        INTEGER,
                        ctDhcpIfDefaultGateway
                        IpAddress,
                        ctDhcpIfDomainNameServer
                        IpAddress,
                        ctDhcpIfDomainName
                        OCTET STRING,
                        ctDhcpIfWINServer
                        IpAddress
                        }
        
        ctDhcpIfIndex    OBJECT-TYPE
                SYNTAX      INTEGER 
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "A unique value identifying an element in a sequence of
                        entries which belong to the DHCP server interface list.  
                        This value ranges from 1 to 2."
                ::= { ctDhcpServerIfEntry 1 }
        
        ctDhcpIfAdminStatus   OBJECT-TYPE
                SYNTAX  INTEGER {
                        disabled(1),
                        enabled(2)
                        }
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "Used to enable and disable the DHCP functions on this
                        interface only.  This object must be set to enabled for 
                        the DHCP functions to occur on this interface."
                ::= { ctDhcpServerIfEntry 2 }

        ctDhcpIfOperStatus   OBJECT-TYPE
                SYNTAX  INTEGER {
                        disabled(1),
                        enabled(2),
                        invalid-config(3)
                        }
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "Indicates the current operating status of the DHCP
                        server function on this interface."
                ::= { ctDhcpServerIfEntry 3 }

        ctDhcpIfServerAddress   OBJECT-TYPE
                SYNTAX      IpAddress
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "This is the IP address of the interface which
                        is providing access to the DHCP server for clients
                        which are connected to this network."
                ::= { ctDhcpServerIfEntry 4 }

        ctDhcpIfNetworkAddress   OBJECT-TYPE
                SYNTAX      IpAddress
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "This is the IP subnet which is being served by
                        this interface of the DHCP server."
                ::= { ctDhcpServerIfEntry 5 }

        ctDhcpIfSubnetMask   OBJECT-TYPE
                SYNTAX      IpAddress
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "This is the subnet mask of the IP subnet which is 
                        being served by this interface of the DHCP server."
                ::= { ctDhcpServerIfEntry 6 }

        ctDhcpIfLowestaddress   OBJECT-TYPE
                SYNTAX      IpAddress
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "This is the lowest numerical value of the IP address
                        range that will be assigned to clients by this interface
                        of the DHCP server.  Its value must be greater or equal 
                        to ctDhcpIfNetworkAddress and less than or equal to 
                        ctDhcpIfHighestAddress."
                ::= { ctDhcpServerIfEntry 7 }

        ctDhcpIfHighestAddress   OBJECT-TYPE
                SYNTAX      IpAddress
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "This is the highest numerical value of the IP address
                        range that will be assigned to clients by this interface
                        of the DHCP server.  Its value must be greater or equal
                        to ctDhcpIfLowestaddress but remain within 
                        ctDhcpIfNetworkAddress."
                ::= { ctDhcpServerIfEntry 8 }

        ctDhcpIfAddressesUsed   OBJECT-TYPE
                SYNTAX      INTEGER
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "This value is the number of clients which are currently 
                        using IP addresses assigned by this interface of the
                        DHCP server."
                ::= { ctDhcpServerIfEntry 9 }

        ctDhcpIfAddressesFree   OBJECT-TYPE
                SYNTAX      INTEGER
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "This value is the number of IP addresses that are 
                        currently available for distribution by this interface 
                        of the DHCP server."
                ::= { ctDhcpServerIfEntry 10 }

        ctDhcpIfLeasePeriod   OBJECT-TYPE
                SYNTAX      INTEGER
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "This value is the time period for which an IP address
                        assigned by this interface is valid.  The units are 
                        seconds.  A value of 0 signifys that the lease will 
                        never expire."
                ::= { ctDhcpServerIfEntry 11 }

        ctDhcpIfDefaultGateway   OBJECT-TYPE
                SYNTAX      IpAddress
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "This value is an DHCP option that can be passed to a 
                        client by this interface if it is requested as part 
                        of the DHCP process.  This value is the IP address of 
                        the default gateway to be used by the client."
                ::= { ctDhcpServerIfEntry 12 }

        ctDhcpIfDomainNameServer   OBJECT-TYPE
                SYNTAX      IpAddress
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "This value is an DHCP option that can be passed to a 
                        client by this interface if it is requested as part 
                        of the DHCP process.  This value is the IP address of 
                        the domain name server to be used by the client."
                ::= { ctDhcpServerIfEntry 13 }

        ctDhcpIfDomainName   OBJECT-TYPE
                SYNTAX      OCTET STRING
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "This value is an DHCP option that can be passed to a 
                        client by this interface if it is requested as part 
                        of the DHCP process.  This value is the domain name 
                        to be used by the client."
                ::= { ctDhcpServerIfEntry 14 }

        ctDhcpIfWINServer   OBJECT-TYPE
                SYNTAX      IpAddress
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "This value is an DHCP option that can be passed to a 
                        client by this interface if it is requested as part 
                        of the DHCP process.  This value is the IP address of 
                        the NetBIOS overTCP/IP name server to be used by the 
                        client."
                ::= { ctDhcpServerIfEntry 15 }
          

    --
 --========        ctDhcpClientStatusTable group       =============--
    --

--      The table structure contains information describing some statistics
--      which are collected for ACTIVE leases.  The data are deleted
--      when the lease expires.

        ctDhcpClientStatsTable OBJECT-TYPE
                SYNTAX      SEQUENCE OF CtDhcpClientStatsEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "This table contains an entry for each DHCP client. The
                        table is indexed by ctDhcpClientStatsID, which indicates
                        an arbitrary order of entries."
                ::= { ctDhcpClientStatusTable 1 }
        
        ctDhcpClientStatsEntry OBJECT-TYPE
                SYNTAX      CtDhcpClientStatsEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "A description of a single client, which could be on any
                        of the subnets being served by participating interfaces."
                INDEX       { ctDhcpClientStatsID }
                ::= { ctDhcpClientStatsTable 1 }
        
        CtDhcpClientStatsEntry ::=
                SEQUENCE {
                        ctDhcpClientStatsID
                        INTEGER,
                        ctDhcpClientName
                        OCTET STRING,
                        ctDhcpClientIP
                        IpAddress,
                        ctDhcpClientID
                        OCTET STRING,
                        ctDhcpEndOfLease
                        INTEGER
                        }
        
        ctDhcpClientStatsID    OBJECT-TYPE
                SYNTAX      INTEGER 
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "A unique value identifying an element in a sequence of
                        active clients which have been given network addresses 
                        by this DHCP server."
                ::= { ctDhcpClientStatsEntry 1 }
        
        ctDhcpClientName OBJECT-TYPE
                SYNTAX  OCTET STRING 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the name of the client as listed by the client
                        in a DHCP request packet."
                ::= { ctDhcpClientStatsEntry 2}

        ctDhcpClientIP  OBJECT-TYPE
                SYNTAX  IpAddress 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the assigned IP address of the client during
                        this active connection."
                ::= { ctDhcpClientStatsEntry 3}

        ctDhcpClientID OBJECT-TYPE
                SYNTAX  OCTET STRING
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the ID of the client as listed by the client
                        in a DHCP request packet.  It is normally the client's
                        Ethernet MAC address."
                ::= { ctDhcpClientStatsEntry 4}


        ctDhcpEndOfLease       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This value is the time at which the lease of the IP
                        address will expire.  The units are seconds and the
                        value is relative to the same starting point as 
                        ctDhcpIfServerTime."
                ::= { ctDhcpClientStatsEntry 5}

END