rfc2584.txt

著名的RFC文档,其中有一些文档是已经翻译成中文的的.

Network Working Group                                B. Clouston, Ed.
Request for Comments: 2584                              Cisco Systems
Category: Standards Track                               B. Moore, Ed.
                                                      IBM Corporation
                                                             May 1999


                     Definitions of Managed Objects
                      for APPN/HPR in IP Networks

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it defines objects for monitoring and controlling HPR
   (High Performance Routing) network devices which have the capability
   to communicate in IP (Internet Protocol) networks. This memo
   identifies managed objects for the HPR in IP network communications.

Table of Contents

   1.     Introduction  ...........................................  2
   2.     The SNMP Network Management Framework  ..................  2
   3.     Overview  ...............................................  3
   3.1      HPR/IP Values for Objects in the APPN MIB .............  3
   3.2      APPN/HPR in IP Networks MIB structure .................  4
   3.2.1      hprIpMonitoringGroup ................................  5
   3.2.2      hprIpConfigurationGroup .............................  5
   4.     Definitions  ............................................  6
   5.     Security Considerations  ................................ 16
   6.     Intellectual Property  .................................. 17
   7.     Acknowledgments  ........................................ 18
   8.     References  ............................................. 18
   9.     Authors' Addresses  ..................................... 20
   10.    Full Copyright Statement  ............................... 21




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1.  Introduction

   This document is a product of the SNA NAU Services MIB Working Group.
   It defines a MIB module for managing devices with HPR in IP networks
   capabilities.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [17].

2.  The SNMP Network Management Framework

   The SNMP Management Framework presently consists of five major
   components:

   o    An overall architecture, described in RFC 2271 [1].

   o    Mechanisms for describing and naming objects and events for the
        purpose of management. The first version of this Structure of
        Management Information (SMI) is called SMIv1 and described in
        STD 16, RFC 1155 [2], STD 16, RFC 1212 [3] and RFC 1215 [4]. The
        second version, called SMIv2, is described in STD 58, RFC 2478
        [5], RFC 2579 [6] and RFC 2580 [7].

   o    Message protocols for transferring management information. The
        first version of the SNMP message protocol is called SNMPv1 and
        described in STD 15, RFC 1157 [8]. A second version of the SNMP
        message protocol, which is not an Internet standards track
        protocol, is called SNMPv2c and described in RFC 1901 [9] and
        RFC 1906 [10]. The third version of the message protocol is
        called SNMPv3 and described in RFC 1906 [10], RFC 2272 [11] and
        RFC 2274 [12].

   o    Protocol operations for accessing management information. The
        first set of protocol operations and associated PDU formats is
        described in STD 15, RFC 1157 [8]. A second set of protocol
        operations and associated PDU formats is described in RFC 1905
        [13].

   o    A set of fundamental applications described in RFC 2273 [14] and
        the view-based access control mechanism described in RFC 2275
        [15].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the mechanisms defined in the SMI.





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RFC 2584              APPN/HPR in IP Networks MIB               May 1999


   This memo specifies a MIB module that is compliant to the SMIv2. A
   MIB conforming to the SMIv1 can be produced through the appropriate
   translations. The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (use of Counter64). Some machine readable
   information in SMIv2 will be converted into textual descriptions in
   SMIv1 during the translation process. However, this loss of machine
   readable information is not considered to change the semantics of the
   MIB.

3.  Overview

   This document identifies a set of objects for monitoring the
   configuration and active characteristics of devices with HPR in IP
   network capabilities.  HPR is an enhancement to the Advanced Peer-
   to-Peer Network (APPN) architecture that provides fast data routing
   and improved session reliability.  APPN is the aspect of Systems
   Network Architecture (SNA) that supports peer-to-peer networking.
   APPN/HPR in IP Networks is a further enhancement to the APPN/HPR
   architecture, described in RFC 2353 [18].  It provides a method with
   which APPN/HPR nodes can communicate in IP networks.

   APPN management information is defined by the APPN MIB [19].  HPR
   management information is defined by the HPR MIB, RFC 2238 [20].

   Highlights of the management functions supported by the APPN/HPR in
   IP Networks MIB module include the following:

   o    A count of UDP packets sent with each type of APPN traffic on
        HPR/IP links.

   o    Monitoring and setting configuration parameters for the mappings
        between APPN traffic types on Type of Service (TOS) Precedence
        settings in the IP header.  Note that the TOS Precedence
        settings have been redefined in RFC 2474 [21] as the first three
        bits of the differentiated services code point (DSCP).

   This MIB module does not support:

   o    Configuration of IP addresses used for APPN ports or link
        stations.

3.1.  HPR/IP Values for Objects in the APPN MIB

   Ports and link stations are the APPN device's interface to the data
   link control (DLC), which provides the physical transport, or to
   another protocol, such as IP.  The APPN MIB identifies ports and link
   stations using IP as the transport with the following objects:



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RFC 2584              APPN/HPR in IP Networks MIB               May 1999


   o    appnPortDlcType

   o    appnLsDlcType

   o    appnLsStatusDlcType

   These objects all have the syntax IANAifType, and the value 126,
   defined as "IP (for APPN HPR in IP networks)" shall be returned when
   they identify an HPR/IP port or link station.

   The IP address used for the port or link station is returned in the
   following objects:

   o    appnPortDlcLocalAddr

   o    appnLsLocalAddr

   o    appnLsRemoteAddr

   o    appnLsStatusLocalAddr

   o    appnLsStatusRemoteAddr

   These objects have the syntax DisplayableDlcAddress, defined in the
   APPN MIB as a textual convention to represent the address as an octet
   string of ASCII characters.

   The following two objects return object identifiers that tie port and
   link table entries in the APPN MIB to lower-layer MIB entries:

   o    appnPortSpecific

   o    appnLsSpecific

   Both objects should return a RowPointer to the ifEntry in the agent's
   ifTable for the physical interface associated with the local IP
   address for the port.  If the agent implements the IP-MIB (RFC 2011),
   this association between the IP address and the physical interface
   will be represented in the ipNetToMediaTable.

3.2.  APPN/HPR in IP Networks MIB Structure

   The APPN/HPR in IP Networks MIB module contains two groups of
   objects:

   o    hprIpMonitoringGroup - an object for counting outgoing HPR/IP
        traffic for each APPN traffic type




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   o    hprIpConfigurationGroup - objects to represent TOS Precedence to
        APPN traffic type mappings

   These groups are described below in more detail.

3.2.1.  hprIpMonitoringGroup

   The hprIpMonitoringGroup group consists of the hprIpActiveLsTable.
   This table is indexed by the link station name and traffic type, and
   contains a counter for the number of UDP packets sent on a link
   station for that traffic type.

3.2.2.  hprIpConfigurationGroup

   The hprIpMonitoringGroup group consists of the following objects and
   tables:

   1) hprIpAppnPortTable

   This table supports reading and setting the default mapping between
   APPN traffic types and TOS Precedence settings for all link stations
   using a port.  This mapping may be overridden for individual link
   stations or individual connection networks.

   2) hprIpLsTable

   This table supports reading and setting the mappings between APPN
   traffic types and TOS Precedence settings for an individual link
   station and APPN traffic type.  If there is no entry in this table
   for a given link station and traffic type, then that link station
   inherits its mapping from its port.

   3) hprIpCnTable

   This table supports reading and setting the mapping between APPN
   traffic types and TOS Precedence settings for an individual
   connection network and traffic type.  If there is no entry in this
   table for a given connection network and traffic type, then that
   connection network inherits its mapping from its port.












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4.  Definitions

HPR-IP-MIB DEFINITIONS ::= BEGIN

IMPORTS
        MODULE-IDENTITY,OBJECT-TYPE, Counter32
                    FROM SNMPv2-SMI
        DisplayString, RowStatus, TEXTUAL-CONVENTION
                    FROM SNMPv2-TC
        MODULE-COMPLIANCE, OBJECT-GROUP
                    FROM SNMPv2-CONF
        SnaControlPointName
                    FROM APPN-MIB
        hprObjects, hprCompliances, hprGroups
                    FROM HPR-MIB  ;

hprIp   MODULE-IDENTITY
   LAST-UPDATED "9809240000Z" -- September 24, 1998
   ORGANIZATION "IETF SNA NAU MIB WG / AIW APPN MIBs SIG"
   CONTACT-INFO
       "
               Bob Clouston
               Cisco Systems
               7025 Kit Creek Road
               P.O. Box 14987
               Research Triangle Park, NC 27709, USA
               Tel:    [phone]
               E-mail: [e-mail]

               Bob Moore
               IBM Corporation
               4205 S. Miami Boulevard
               BRQA/501
               P.O. Box 12195
               Research Triangle Park, NC 27709, USA
               Tel:    [phone]
               E-mail: [e-mail]
       "
   DESCRIPTION
       "The MIB module for HPR over IP.  This module contains two
       groups:

        -  the HPR over IP Monitoring Group provides a count of the UDP
           packets sent by a link station for each APPN traffic type.

        -  the HPR over IP Configuration Group provides for reading and
           setting the mappings between APPN traffic types and TOS
           Precedence settings in the IP header.  These mappings are



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RFC 2584              APPN/HPR in IP Networks MIB               May 1999


           configured at the APPN port level, and are inherited by the
           APPN connection networks and link stations associated with an
           APPN port.  A port-level mapping can, however, be overridden
           for a particular connection network or link station."
   REVISION  "9809240000Z" -- September 24, 1998
   DESCRIPTION
       "Initial version, Published as RFC 2584"

   ::= { hprObjects 5 }

-- *********************************************************************
-- Textual Conventions
-- *********************************************************************
AppnTrafficType ::= TEXTUAL-CONVENTION
      STATUS current
      DESCRIPTION
          "APPN traffic type.  The first four values correspond
          to APPN transmission priorities (network, high, medium and
          low), while the fifth is used for both LLC commands (XID,
          TEST, DISC, and DM) and function-routed NLPs (XID_DONE_RQ
          and XID_DONE_RSP)."

      SYNTAX INTEGER { low (1),
                       medium (2),
                       high (3),
                       network (4),
                       llcAndFnRoutedNlp (5) }

AppnTOSPrecedence ::= TEXTUAL-CONVENTION
      STATUS current
      DESCRIPTION
          "A DisplayString representing the setting of the three TOS
          Precedence bits in the IP Type of Service field for this APPN
          traffic type.  The HPR over IP architecture specifies the
          following default mapping:

               APPN traffic type           IP TOS Precedence bits
               ------------------          ----------------------
                Network                     110
                High                        100
                Medium                      010
                Low                         001
                LLC commands, etc.          110
          "

      SYNTAX DisplayString (SIZE(3))

-- *******************************************************************



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