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Network Working Group                                            Y. Fu
Internet Draft                                                S. Jiang
Intended status: Standards Track          Huawei Technologies Co., Ltd
Expires: August 4, 2012                                         J.Dong
                                                                 P. Wu
                                                   Tsinghua University
                                                      February 1, 2012

                 Definitions of Managed Objects for 4rd
                      draft-fu-softwire-4rd-mib-00


Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time. It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 4, 2012.

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the
   document authors. All rights reserved.

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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 managed objects for 4rd.



Table of Contents

   1. Introduction ................................................ 3
   2. The Internet-Standard Management Framework .................. 3
   3. Terminology ................................................. 3
   4. Structure of the MIB Module.................................. 3
      4.1. The fourRdTunnel Subtree................................ 3
      4.2. The fourRdStatisticInfo Subtree ........................ 4
      4.3. The fourRdTrap Subtree.................................. 4
      4.4. The fourRdConformance Subtree........................... 4
   5. MIB modules required for IMPORTS............................. 4
   6. Definitions ................................................. 4
   7. IANA Considerations ........................................ 13
   8. Security Considerations..................................... 13
   9. References ................................................. 14
      9.1. Normative References................................... 14
      9.2. Informative Reference ................................. 14
   10. Change Log [RFC Editor please remove] ......................15
   Author's Addresses ............................................ 15





















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1. Introduction

   4rd [I-D.murakami-softwire-4rd], [I-D.despres-softwire-4rd] is a
   stateless mechanism for running IPv4 over IPv6-only infrastructure.
   It provides an automatic tunnelling mechanism for providing IPv4
   connectivity service to end users over a service provider's IPv6
   network.

   This document defines a portion of the Management Information Base
   (MIB) for use with network management protocols in the Internet
   community. This MIB module may be used for monitoring the devices in
   the 4rd scenario.

2. The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the MIB. MIB objects are generally accessed through the Simple
   Network Management Protocol (SNMP).

   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in
   [RFC2578], [RFC2579] and [RFC2580].

3. Terminology

   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 [RFC2119].

4. Structure of the MIB Module

   The 4rd MIB provides a way to configure and manage the devices in 4rd
   scenario through SNMP.

   4rd MIB is configurable on a per-interface basis. It depends on
   several parts of the IF-MIB [RFC2863] and tunnel MIB [RFC4087].

     4.1. The fourRdTunnel Subtree

   The fourRdTunnel subtree describes managed objects used for managing
   tunnels in the 4rd scenario. Because the tunnel MIB supports the


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   tunnel management function in 4rd, we may reuse it in 4rd MIB.
   However, a 4rd BR is considered to be a collection of 4rd tunnel
   endpoints which is distinguished by different mapping rules. It needs
   to extend the tunnel MIB by some parameters of mapping rule ID to
   distinguish the different tunnels.

     4.2. The fourRdStatisticInfo Subtree

   The fourRdStatisticInfo subtree provides state and statistical
   information for 4rd BRs or 4rd tunnel endpoints.

     4.3. The fourRdTrap Subtree

   The fourRdTrap Subtree provides trap information in 4rd instance.

     4.4. The fourRdConformance Subtree

   The Subtree provides conformance information of MIB objects.

5. MIB modules required for IMPORTS

   This MIB module IMPORTs objects from [RFC4087], [RFC2580], [RFC2578],
   [RFC2863], [RFC4001], [RFC3411].

6. Definitions

      fourRd-MIB DEFFINITIONS  ::=  BEGIN

      IMPORTS
         MODULE-IDENTITY, OBJECT-TYPE, mib-2, transmission,
         Gauge32, Integer32, Counter64
            FROM SNMPv2-SMI

         RowStatus, StorageType, DisplayString
            FROM SNMPv2-TC

         ifIndex, InterfaceIndexOrZero
            FROM IF-MIB

         InetAddress, InetAddressIPv6
         InetPortNumber, InetAddressPrefixLength
            FROM INET-ADDRESS-MIB

         tunnelInetConfigIfIndex
            FROM tunnelMIB




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      fourRdMIB MODULE-IDENTITY
      LAST-UPDATED "201201310000Z" -- January 31, 2012
      ORGANIZATION "IETF Softwire Working Group"
      CONTACT-INFO
         "Yu Fu
          Huawei Technologies Co., Ltd
          Huawei Building, 156 Beiqing Rd., Hai-Dian District
          Beijing, P.R. China 100095
          EMail: eleven.fuyu@huawei.com

          Sheng Jiang
          Huawei Technologies Co., Ltd
          Huawei Building, 156 Beiqing Rd., Hai-Dian District
          Beijing, P.R. China 100095
          EMail: jiangsheng@huawei.com

          Jiang Dong
          Tsinghua University
          Department of Computer Science, Tsinghua University
          Beijing  100084
          P.R. China
          Email: dongjiang @csnet1.cs.tsinghua.edu.cn

          Peng Wu
          Tsinghua University
          Department of Computer Science, Tsinghua University
          Beijing  100084
          P.R. China
          Email: weapon@csnet1.cs.tsinghua.edu.cn"

      DESCRIPTION
         "The MIB module is defined for management of object in the
         4rd scenario."
         ::=  {  transmission xxx  }  --xxx to be replaced with correct
         value

       fourRdTunnel   OBJECT IDENTIFIER
         :: =  { fourRdMIB 1 }

       fourRdStatisticInfo   OBJECT IDENTIFIER
         :: =  { fourRdMIB 2 }

       fourRdTraps  OBJECT IDENTIFIER
         ::=  { fourRdMIB 3 }





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       --Conformance
       fourRdConformance   OBJECT IDENTIFIER
         :: =  { fourRdMIB 4 }

          --fourRdTunnel
          --fourRdTunnelTable

      fourRdTunnelTable OBJECT-TYPE
         SYNTAX     SEQUENCE OF fourRdTunnelEntry
         MAX-ACCESS  not-accessible
         STATUS     current
         DESCRIPTION
            "The (conceptual) table containing information on configured
             tunnels. This table can be used to map CE address to the
             associated 4rd BR address. It can also be used for row
             creation."
         :: =  { fourRdTunnel 1 }

      fourRdTunnelEntry OBJECT-TYPE
         SYNTAX     fourRdTunnelEntry
         MAX-ACCESS  not-accessible
         STATUS     current
         DESCRIPTION
            "Each entry in this table contains the information on a
             particular configured tunnel."
             INDEX   { fourRdTunnelBRAddress,
                       fourRdTunnelMapRuleID}
         :: =  { fourRdTunnelTable 1 }

      fourRdTunnelEntry  :: =
         SEQUENCE {
          fourRdTunnelBRAddress            InetAddressIPv6,
          fourRdTunnelMapRuleID            Integer32,
          fourRdTunnelMapRuleIPv6Prefix    InetAddressIPv6,
          fourRdTunnelMapRuleIPv6PrefixLen InetAddressPrefixLength,
          fourRdTunnelMapRuleIPv4Prefix    InetAddress,
          fourRdTunnelMapRuleIPv4PrefixLen InetAddressPrefixLength,
          fourRdTunnelMAPRuleExPorts       InetPortNumber,
          fourRdTunnelMAPEALen             Integer32,
          fourRdTunnelCEAddress            InetAddressIPv6,
          fourRdTunnelID                   Integer32,
          fourRdTunnelIfIndex              tunnelInetConfigIfIndex,
          fourRdTunnelStatus               RowStatus,
          fourRdTunnelStorageType          StorageType
      }




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      fourRdTunnelBRAddress OBJECT-TYPE
          SYNTAX     InetAddressIPv6
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "The address of the BR. It is one endpoint of the 4rd
              Tunnel"
          ::= { fourRdTunnelEntry 1 }

      fourRdTunnelMapRuleID OBJECT-TYPE
          SYNTAX Integer32 (1..2147483647)
          MAX-ACCESS read-create
          STATUS current
          DESCRIPTION
             "An identifier used to distinguish the multiple mapping
              rule which is unique with each CE in the same BR."
          ::= { fourRdTunnelEntry 2 }

      fourRdTunnelMapRuleIPv6Prefix OBJECT-TYPE
          SYNTAX     InetAddressIPv6
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "The IPv6 prefix defined in mapping rule which will be
              assigned to CE ."
          ::= { fourRdTunnelEntry 3 }

      fourRdTunnelMapRuleIPv6PrefixLen OBJECT-TYPE
          SYNTAX     InetAddressPrefixLength
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "The length of the IPv6 prefix defined in the mapping rule.
              As a parameter for mapping rule, it will be also assigned
              to CE."
          ::= { fourRdTunnelEntry 4 }

      fourRdTunnelMapRuleIPv4Prefix OBJECT-TYPE
          SYNTAX     InetAddress
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             " The IPv4 prefix defined in mapping rule which will be
              assigned to CE."
          ::= { fourRdTunnelEntry 5 }




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      fourRdTunnelMapRuleIPv4PrefixLen OBJECT-TYPE
          SYNTAX     InetAddressPrefixLength
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             " The length of the IPv4 prefix defined in the mapping
               rule. As a parameter for mapping rule, it will be also
               assigned to CE."
          ::= { fourRdTunnelEntry 6 }

      fourRdTunnelMAPRuleExPorts OBJECT-TYPE
          SYNTAX     InetPortNumber
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "The upper bound for range of excluded ports
              defined in mapping rule which will be assigned to CE."
          ::= { fourRdTunnelEntry 7 }

      fourRdTunnelMAPEALen OBJECT-TYPE
          SYNTAX     Integer32
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "The length of the Embedded-Address (EA) defined in
              mapping rule which will be assigned to CE."
          ::= { fourRdTunnelEntry 8 }

      fourRdTunnelCEAddress OBJECT-TYPE
          SYNTAX     InetAddressIPv6
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "The address of the CE as the another endpoint of 4rd
              tunnel. It is derived by the parameters defined in the
              mapping rule assigned to the CE."
          ::= { fourRdTunnelEntry 9 }

      fourRdTunnelID OBJECT-TYPE
          SYNTAX     Integer32 (1..2147483647)
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "An identifier used to distinguish between multiple
              tunnels in 4rd scenario."
          ::= { fourRdTunnelEntry 10 }



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      fourRdTunnelIfIndex OBJECT-TYPE
          SYNTAX     tunnelInetConfigIfIndex
          MAX-ACCESS read-only
          STATUS     current
          DESCRIPTION
             "If the value of fourRdTunnelStatus for this row
              is active, then this object contains the value of
              ifIndex corresponding to the tunnel interface. A
              value of 0 is not legal in the active state,
              and means that the interface index has not
              yet been assigned."
          ::= { fourRdTunnelEntry 11 }

      fourRdTunnelStatus OBJECT-TYPE
          SYNTAX     RowStatus
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "The status of this row, by which new entries may be
              created, or old entries deleted from this table.
          ::= { fourRdTunnelEntry 12 }

      fourRdTunnelStorageType OBJECT-TYPE
          SYNTAX     StorageType
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "The storage type of this row. If the row is
              permanent(4), no objects in the row need be
              writable."
          ::= { fourRdTunnelEntry 13 }

       --fourRdStatisticInfo

      fourRdStatisticTable OBJECT-TYPE
         SYNTAX SEQUENCE OF fourRdStatisticEntry
         MAX-ACCESS not-accessible
         STATUS current
         DESCRIPTION
            "This table provides some statistical information
             of 4rd."
         ::= { fourRdStatisticInfo 1 }

      fourRdStatisticEntry OBJECT-TYPE
         SYNTAX dsliteStatisticEntry
         MAX-ACCESS not-accessible
         STATUS current


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         DESCRIPTION
            "This table provides statistical information
             of 4rd."
         INDEX { fourRdStatisticBRAddress }
         ::= { fourRdStatisticTable 1 }

      fourRdStatisticEntry ::=
         SEQUENCE {
       fourRdStatisticBRAddress              InetAddressIPv6,
       fourRdStatisticDiscard                Counter64,
       fourRdStatisticReceived               Counter64,
       fourRdStatisticTransmitted            Counter64,
       fourRdStatisticConnections            Integer32,
       fourRdStatisticSpecificIP             DisplayString,
       fourRdStatisticStorageType            StorageType,
       fourRdStatisticRowStatus              RowStatus
      }

      fourRdStatisticBRAddress OBJECT-TYPE
          SYNTAX     InetAddressIPv6
          MAX-ACCESS read-create
          STATUS     current
          DESCRIPTION
             "The address of the BR. It is one endpoint of the 4rd
              Tunnel"
          ::= { fourRdStatisticEntry 1 }

      fourRdStatisticDiscard OBJECT-TYPE
         SYNTAX Counter64
         MAX-ACCESS read-create
         STATUS current
         DESCRIPTION
            " This object indicate the count number of
              the discarded packet."
        ::= { fourRdStatisticEntry 2 }

      fourRdStatisticReceived OBJECT-TYPE
         SYNTAX Counter64
         MAX-ACCESS read-create
         STATUS current
         DESCRIPTION
            "This object indicate the count number of
             received packet count."
         ::= { fourRdStatisticEntry 3 }

      fourRdStatisticTransmitted OBJECT-TYPE
         SYNTAX Counter64


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         MAX-ACCESS read-create
         STATUS current
         DESCRIPTION
            "This object indicate the count number of
             transmitted packet count."
         ::= { fourRdStatisticEntry 4 }

      fourRdStatisticConnections OBJECT-TYPE
         SYNTAX Integer32 (60..90)
         MAX-ACCESS read-write
         STATUS current
         DESCRIPTION
            " This object indicate the threshold of 4rd
              connections for this BR."
         ::= { fourRdStatisticEntry 5 }

      fourRdStatisticSpecificIP OBJECT-TYPE
         SYNTAX DisplayString
         MAX-ACCESS accessible-for-notify
         STATUS current
         DESCRIPTION
            " This object indicate the IP address of CE whose port usage
             reach threshold "
         ::= { fourRdStatisticEntry 6 }

   ---fourRd trap

      fourRdTunnelNumAlarm NOTIFICATION-TYPE
         STATUS current
         DESCRIPTION
            "This trap is triggered when 4rd tunnel
             reach the threshold."
         ::= { fourRdTraps 1 }

      fourRdBRPortUsageOfSpecificIpAlarm NOTIFICATION-TYPE
         OBJECTS { fourRdStatisticSpecificIP }
         STATUS current
         DESCRIPTION
            "This trap is triggered when the used ports of
             specific CE address reach the threshold."
         ::= { dsliteTraps 2 }

       --Module Conformance statement

      fourRdCompliances OBJECT IDENTIFIER ::= { fourRdConformance 1 }




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      fourRdCompliance MODULE-COMPLIANCE
         STATUS current
         DESCRIPTION
            "Description."
         MODULE -- this module
             MANDATORY-GROUPS { fourRdTunnelGroup,
                 fourRdStatisticInfoGroup }
        ::= { fourRdCompliances 1 }

      fourRdGroups OBJECT IDENTIFIER ::= { fourRdConformance 2 }

      fourRdTunnelGroup OBJECT-GROUP
         OBJECTS { fourRdTunnelBRAddress, fourRdTunnelMapRuleID,
                 fourRdTunnelMapRuleIPv6Prefix,
                 fourRdTunnelMapRuleIPv6PrefixLen,
                 fourRdTunnelMapRuleIPv4Prefix,
                 fourRdTunnelMapRuleIPv4PrefixLen,
                 fourRdTunnelMAPRuleExPorts, fourRdTunnelMAPEALen,
                 fourRdTunnelCEAddress, fourRdTunnelID,
                 fourRdTunnelIfIndex, fourRdTunnelStatus,
                 dsliteTunnelStorageType }
         STATUS current
         DESCRIPTION
            " The collection of this objects are used to give the
             information of tunnel in 4rd."
         ::= { fourRdGroups 1 }

      fourRdStatisticGroup OBJECT-GROUP
         OBJECTS { fourRdStatisticBRAddress,
                   fourRdStatisticDiscard,
                   fourRdStatisticReceived,
                   fourRdStatisticTransmitted,
                   fourRdStatisticConnections,
                   fourRdStatisticSpecificIP,
                   fourRdStatisticStorageType,
                   fourRdStatisticRowStatus }
        STATUS current
        DESCRIPTION
           " The collection of this objects are used to give the
             statistical information of 4rd."
        ::= { fourRdGroups 2 }

      fourRdTrapsGroup NOTIFICATION-GROUP
         NOTIFICATIONS { fourRdTunnelNumAlarm,
                         fourRdBRPortUsageOfSpecificIpAlarm }
         STATUS current
         DESCRIPTION


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            "The collection of this objects are used to give the
             trap information of 4rd."
         ::= { fourRdGroups 3 }

             END

7. IANA Considerations

   The MIB module in this document uses the following IANA-assigned
   OBJECT IDENTIFIER values recorded in the SMI Numbers registry:

      Descriptor        OBJECT IDENTIFIER value
      ----------        -----------------------
      fourRd-MIB          { transmission XXX }

8. Security Considerations

   The 4rd MIB module can be used for configuration of certain objects,
   and anything that can be configured can be incorrectly configured,
   with potentially disastrous results. Because this MIB module reuses
   the IP tunnel MIB, the security considerations for these MIBs are
   also applicable to the 4rd MIB.

   SNMP versions prior to SNMPv3 did not include adequate security.
   Even if the network itself is secure (for example by using IPSec),
   even then, there is no control as to who on the secure network is
   allowed to access and GET/SET (read/change/create/delete) the objects
   in this MIB module.

   It is RECOMMENDED that implementers consider the security features as
   provided by the SNMPv3 framework (see [RFC3410], section 8),
   including full support for the SNMPv3 cryptographic mechanisms (for
   authentication and privacy).

   Further, deployment of SNMP versions prior to SNMPv3 is NOT
   RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to
   enable cryptographic security.  It is then a customer/operator
   responsibility to ensure that the SNMP entity giving access to an
   instance of this MIB module is properly configured to give access to
   the objects only to those principles (users) that have legitimate
   rights to indeed GET or SET (change/create/delete) them.








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9. References

     9.1. Normative References

   [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
             Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2578] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
             "Structure of Management Information Version 2 (SMIv2)",
             RFC 2578, April 1999.

   [RFC2579] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Textual
             Conventions for SMIv2", RFC 2579, April 1999.

   [RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
             "Conformance Statements for SMIv2", RFC 2580, April 1999.

   [RFC2863] McCloghrie, K. and F. Kastenholz. "The Interfaces Group
             MIB", RFC 2863, June 2000.

   [RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An
             Architecture for Describing Simple Network Management
             Protocol (SNMP) Management Frameworks", RFC 3411, December
             2002.

   [RFC4001] Daniele, M., Haberman, B., Routhier, S., and J.
             Schoenwaelder, "Textual Conventions for Internet Network
             Addresses", RFC 4001, February 2005.

   [RFC4087] Thaler, D., "IP Tunnel MIB", RFC 4087, June 2005.

   [I-D.mdt-softwire-mapping-address-and-port]
             Troan, O., "Mapping of Address and Port (MAP)", draft-mdt-
             softwire-mapping-address-and-port, working in progress.

   [I-D.mdt-softwire-map-dhcp-option]
             Mrugalski, T., "DHCPv6 Options for Mapping of Address and
             Port", draft-mdt-softwire-map-dhcp-option, working in
             progress.

     9.2. Informative References

   [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart,
             "Introduction and Applicability Statements for Internet-
             Standard Management Framework", RFC 3410, December 2002.




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10. Change Log [RFC Editor please remove]

   draft-fu-softwire-4rd-mib-00, original version, 2012-02-01

Author's Addresses

   Yu Fu
   Huawei Technologies Co., Ltd
   Huawei Building, 56 Beiqing Rd.,
   Hai-Dian District, Beijing 100095
   P.R. China
   Email: eleven.fuyu@huawei.com

   Sheng Jiang
   Huawei Technologies Co., Ltd
   Huawei Building, 56 Beiqing Rd.,
   Hai-Dian District, Beijing 100095
   P.R. China
   Email: shengjiang@huawei.com

   Jiang Dong
   Tsinghua University
   Department of Computer Science, Tsinghua University
   Beijing  100084
   P.R. China
   Email: dongjiang@csnet1.cs.tsinghua.edu.cn

   Peng Wu
   Tsinghua University
   Department of Computer Science, Tsinghua University
   Beijing  100084
   P.R. China
   Email: weapon@csnet1.cs.tsinghua.edu.cn















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