rfc1658.txt

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       ::= { charPortEntry 12 }

   charPortInCharacters OBJECT-TYPE
       SYNTAX Counter32
       MAX-ACCESS read-only

       STATUS current
       DESCRIPTION
           "Total number of characters detected as input from
           the port since system re-initialization and while
           the port operational state was 'up', 'active', or
           'maintenance', including, for example, framing, flow
           control (i.e. XON and XOFF), each occurrence of a
           BREAK condition, locally-processed input, and input
           sent to all sessions."
       ::= { charPortEntry 13 }

   charPortOutCharacters OBJECT-TYPE
       SYNTAX Counter32
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "Total number of characters detected as output to
           the port since system re-initialization and while
           the port operational state was 'up', 'active', or
           'maintenance', including, for example, framing, flow
           control (i.e. XON and XOFF), each occurrence of a
           BREAK condition, locally-created output, and output
           received from all sessions."
       ::= { charPortEntry 14 }

   charPortAdminOrigin OBJECT-TYPE
       SYNTAX INTEGER { dynamic(1), network(2), local(3),
                        none(4) }
       MAX-ACCESS read-write
       STATUS current
       DESCRIPTION
           "The administratively allowed origin for
           establishing session on the port.  'dynamic' allows
           'network' or 'local' session establishment. 'none'
           disallows session establishment."
       ::= { charPortEntry 15 }

   charPortSessionMaximum OBJECT-TYPE
       SYNTAX INTEGER (-1..2147483647)
       MAX-ACCESS read-write
       STATUS current
       DESCRIPTION
           "The maximum number of concurrent sessions allowed
           on the port.  A value of -1 indicates no maximum.
           Setting the maximum to less than the current number
           of sessions has unspecified results."
       ::= { charPortEntry 16 }

   charPortSessionNumber OBJECT-TYPE
       SYNTAX Gauge32
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "The number of open sessions on the port that are in
           the connecting, connected, or disconnecting state."
       ::= { charPortEntry 17 }

   charPortSessionIndex OBJECT-TYPE
       SYNTAX INTEGER (0..2147483647)
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "The value of charSessIndex for the port's first or
           only active session.  If the port has no active
           session, the agent returns the value zero."
       ::= { charPortEntry 18 }

   charPortInFlowTypes OBJECT-TYPE
       SYNTAX OCTET STRING (SIZE (1))
       MAX-ACCESS read-write
       STATUS current
       DESCRIPTION
           "The port's types of input flow control at the
           software level.  Hardware-level flow control is
           independently controlled by the appropriate
           hardware-level MIB.

           A value of zero indicates no flow control.
           Depending on the specific implementation, any or
           all combinations of flow control may be chosen by
           adding the values:

           128  xonXoff, recognizing XON and XOFF characters
           64   enqHost, ENQ/ACK to allow input to host
           32   enqTerm, ACK to allow output to port
           "
       ::= { charPortEntry 19 }

   charPortOutFlowTypes OBJECT-TYPE
       SYNTAX OCTET STRING (SIZE (1))
       MAX-ACCESS read-write
       STATUS current
       DESCRIPTION
           "The port's types of output flow control at the
           software level.  Hardware-level flow control is
           independently controlled by the appropriate

           hardware-level MIB.

           A value of zero indicates no flow control.
           Depending on the specific implementation, any or
           all combinations of flow control may be chosen by
           adding the values:

           128  xonXoff, recognizing XON and XOFF characters
           64   enqHost, ENQ/ACK to allow input to host
           32   enqTerm, ACK to allow output to port
           "
       ::= { charPortEntry 20 }

   charPortLowerIfIndex OBJECT-TYPE
       SYNTAX InterfaceIndex
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "The ifIndex value of the lower level hardware supporting
           this character port, zero if none."
       ::= { charPortEntry 21 }

   -- the Character Session table

   charSessTable OBJECT-TYPE
       SYNTAX SEQUENCE OF CharSessEntry
       MAX-ACCESS not-accessible
       STATUS current
       DESCRIPTION
           "A list of port session entries."
       ::= { char 3 }

   charSessEntry OBJECT-TYPE
       SYNTAX CharSessEntry
       MAX-ACCESS not-accessible
       STATUS current
       DESCRIPTION
           "Status and parameter values for a character port
           session."
       INDEX { charSessPortIndex, charSessIndex }
       ::= { charSessTable 1 }

   CharSessEntry ::=
       SEQUENCE {
           charSessPortIndex
               PortIndex,
           charSessIndex

               INTEGER,
           charSessKill
               INTEGER,
           charSessState
               INTEGER,
           charSessProtocol
               AutonomousType,
           charSessOperOrigin
               INTEGER,
           charSessInCharacters
               Counter32,
           charSessOutCharacters
               Counter32,
           charSessConnectionId
               InstancePointer,
           charSessStartTime
               TimeTicks
       }

   charSessPortIndex OBJECT-TYPE
       SYNTAX PortIndex
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "The value of charPortIndex for the port to which
           this session belongs."
       ::= { charSessEntry 1 }

   charSessIndex OBJECT-TYPE
       SYNTAX INTEGER (1..2147483647)
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "The session index in the context of the port, a
           non-zero positive integer.  Session indexes within a
           port need not be sequential.  Session indexes may be
           reused for different ports.  For example, port 1 and
           port 3 may both have a session 2 at the same time.
           Session indexes may have any valid integer value,
           with any meaning convenient to the agent
           implementation."
       ::= { charSessEntry 2 }

   charSessKill OBJECT-TYPE
       SYNTAX INTEGER { ready(1), execute(2) }
       MAX-ACCESS read-write
       STATUS current
       DESCRIPTION

           "A control to terminate the session.  In response to
           a get-request or get-next-request, the agent always
           returns 'ready' as the value.  Setting the value to
           'execute' causes termination."
       ::= { charSessEntry 3 }

   charSessState OBJECT-TYPE
       SYNTAX INTEGER { connecting(1), connected(2),
                        disconnecting(3) }
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "The current operational state of the session,
           disregarding flow control.  'connected' indicates
           that character data could flow on the network side
           of session.  'connecting' indicates moving from
           nonexistent toward 'connected'.  'disconnecting'
           indicates moving from 'connected' or 'connecting' to
           nonexistent."
       ::= { charSessEntry 4 }

   charSessProtocol OBJECT-TYPE
       SYNTAX AutonomousType
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "The network protocol over which the session is
           running.  Other OBJECT IDENTIFIER values may be
           defined elsewhere, in association with specific
           protocols.  However, this document assigns those of
           known interest as of this writing."
       ::= { charSessEntry 5 }

   wellKnownProtocols OBJECT IDENTIFIER ::= { char 4 }

   protocolOther  OBJECT IDENTIFIER ::= { wellKnownProtocols 1 }
   protocolTelnet OBJECT IDENTIFIER ::= { wellKnownProtocols 2 }
   protocolRlogin OBJECT IDENTIFIER ::= { wellKnownProtocols 3 }
   protocolLat    OBJECT IDENTIFIER ::= { wellKnownProtocols 4 }
   protocolX29    OBJECT IDENTIFIER ::= { wellKnownProtocols 5 }
   protocolVtp    OBJECT IDENTIFIER ::= { wellKnownProtocols 6 }

   charSessOperOrigin OBJECT-TYPE
       SYNTAX INTEGER { unknown(1), network(2), local(3) }
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION

           "The session's source of establishment."
       ::= { charSessEntry 6 }

   charSessInCharacters OBJECT-TYPE
       SYNTAX Counter32
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "This session's subset of charPortInCharacters."
       ::= { charSessEntry 7 }

   charSessOutCharacters OBJECT-TYPE
       SYNTAX Counter32
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "This session's subset of charPortOutCharacters."
       ::= { charSessEntry 8 }

   charSessConnectionId OBJECT-TYPE
       SYNTAX InstancePointer
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "A reference to additional local MIB information.
           This should be the highest available related MIB,
           corresponding to charSessProtocol, such as Telnet.
           For example, the value for a TCP connection (in the
           absence of a Telnet MIB) is the object identifier of
           tcpConnState.  If an agent is not configured to have
           such values, the agent returns the object
           identifier:

               nullConnectionId OBJECT IDENTIFIER ::= { 0 0 }
           "
       ::= { charSessEntry 9 }

   charSessStartTime OBJECT-TYPE
       SYNTAX TimeTicks
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
           "The value of sysUpTime in MIB-2 when the session
           entered connecting state."
       ::= { charSessEntry 10 }

   -- conformance information

   charConformance OBJECT IDENTIFIER ::= { char 5 }

   charGroups      OBJECT IDENTIFIER ::= { charConformance 1 }
   charCompliances OBJECT IDENTIFIER ::= { charConformance 2 }

   -- compliance statements

   charCompliance MODULE-COMPLIANCE
       STATUS  current
       DESCRIPTION
               "The compliance statement for SNMPv2 entities
               which have Character hardware interfaces."

       MODULE  -- this module
           MANDATORY-GROUPS { charGroup }
       ::= { charCompliances 1 }

   -- units of conformance

   charGroup    OBJECT-GROUP
       OBJECTS { charNumber, charPortIndex, charPortName,
                 charPortType, charPortHardware, charPortReset,
                 charPortAdminStatus, charPortOperStatus,
                 charPortLastChange,
                 charPortInFlowState, charPortOutFlowState,
                 charPortAdminOrigin, charPortSessionMaximum,
                 charPortInFlowTypes, charPortOutFlowTypes,
                 charPortInCharacters, charPortOutCharacters,
                 charPortSessionNumber, charPortSessionIndex,
                 charPortLowerIfIndex,
                 charSessPortIndex, charSessIndex,
                 charSessKill, charSessState,
                 charSessProtocol, charSessOperOrigin,
                 charSessInCharacters, charSessOutCharacters,
                 charSessConnectionId, charSessStartTime }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
                applicable to all Character interfaces."
       ::= { charGroups 1 }

   END
5.  感谢
   被备忘录由 IETF Character MIB Working Group创建。
6.  References
   [1] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Structure
       of Management Information for version 2 of the Simple Network
       Management Protocol (SNMPv2)", RFC 1442, SNMP Research,Inc.,
       Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon
       University, April 1993.

   [2] McCloghrie, K., and M. Rose, Editors, "Management Information
       Base for Network Management of TCP/IP-based internets: MIB-II",
       STD 17, RFC 1213, Hughes LAN Systems, Performance Systems
       International, March 1991.

   [3] Galvin, J., and K. McCloghrie, "Administrative Model for version
       2 of the Simple Network Management Protocol (SNMPv2)", RFC 1445,
       Trusted Information Systems, Hughes LAN Systems, April 1993.

   [4] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol
       Operations for version 2 of the Simple Network Management
       Protocol (SNMPv2)", RFC 1448, SNMP Research,Inc., Hughes LAN
       Systems, Dover Beach Consulting, Inc., Carnegie Mellon
       University, April 1993.

   [5] McCloghrie, K., and F. Kastenholz, "Evolution of the Interfaces
       Group of MIB-II", RFC 1573, Hughes LAN Systems, FTP Software,
       January 1994.

   [6] Stewart, B., "Definitions of Managed Objects for RS-232-like
       Hardware Devices using SMIv2", RFC 1659, Xyplex, Inc., July 1994.

   [7] Stewart, B., "Definitions of Managed Objects for Parallel-
       printer-like Hardware Devices using SMIv2", RFC 1660, Xyplex,
       Inc., July 1994.
7.  安全考虑
   在本备忘录中没有讨论安全问题。
8.  作者联系方式
   Bob Stewart
   Xyplex, Inc.
   295 Foster Street
   Littleton, MA 01460

   Phone: [phone]
   Fax: [phone]
   EMail: [e-mail]

RFC1658—— Definitions of Managed Objects for Character Stream Devices using SMIv2
使用SMIv2的字符流设备管理对象定义


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