Definition of Managed Objects for IPv6 over Low-Power Wireless Personal Area Networks (6LoWPANs)
draft-ietf-6lo-lowpan-mib-03

   lowpanIfOutMeshNoRoutes OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of 6LoWPAN datagrams to be sent on this
            interface with a MESH header that were dropped
            because there was no forwarding information available."
       ::= { lowpanIfStatsEntry 24 }

   lowpanIfOutMeshRequests OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of 6LoWPAN datagrams to be sent on this
            interface requiring MESH header encapsulation."
       ::= { lowpanIfStatsEntry 25 }

   lowpanIfOutMeshForwds OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of 6LoWPAN datagrams to be sent on this
            interface with a MESH header for which suitable
            forwarding information was available."
       ::= { lowpanIfStatsEntry 26 }

   lowpanIfOutMeshTransmits OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of 6LoWPAN datagrams to be send on this
            interface with a MESH header created."
       ::= { lowpanIfStatsEntry 27 }

   lowpanIfOutDiscards OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of IPv6 packets to be sent over this
            interface for which no problem was encountered to
            prevent their transmission to their destination, but
            were discarded (e.g., for lack of buffer space)."
       ::= { lowpanIfStatsEntry 28 }

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   lowpanIfOutTransmits OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The total number of 6LoWPAN datagrams to be sent on
            this interface that this entity supplied to the lower
            layers for transmission."
       ::= { lowpanIfStatsEntry 29 }

   -- conformance definitions

   lowpanGroups      OBJECT IDENTIFIER ::= { lowpanConformance 1 }
   lowpanCompliances OBJECT IDENTIFIER ::= { lowpanConformance 2 }

   lowpanCompliance MODULE-COMPLIANCE
       STATUS      current
       DESCRIPTION
           "Compliance statement for systems that implement 6LoWPAN."
       MODULE      -- this module
       MANDATORY-GROUPS {
           lowpanStatsGroup
       }
       GROUP       lowpanStatsMeshGroup
       DESCRIPTION
         "This group is mandatory for implementations that process
          or forward 6LoWPAN datagrams with mesh headers."
       GROUP       lowpanIfStatsGroup
       DESCRIPTION
         "This group is mandatory for implementations that expose
          per interface statistics."
       GROUP       lowpanIfStatsMeshGroup
       DESCRIPTION
         "This group is mandatory for implementations that expose
          per interface statistics and that process or forward
          6LoWPAN datagrams with mesh headers."
       ::= { lowpanCompliances 1 }

   lowpanStatsGroup OBJECT-GROUP
       OBJECTS {
           lowpanReasmTimeout,
           lowpanInReceives,
           lowpanInHdrErrors,
           lowpanInMeshReceives,
           lowpanInReasmReqds,
           lowpanInReasmFails,
           lowpanInReasmOKs,
           lowpanInCompReqds,

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           lowpanInCompFails,
           lowpanInCompOKs,
           lowpanInDiscards,
           lowpanInDelivers,
           lowpanOutRequests,
           lowpanOutCompReqds,
           lowpanOutCompFails,
           lowpanOutCompOKs,
           lowpanOutFragReqds,
           lowpanOutFragFails,
           lowpanOutFragOKs,
           lowpanOutFragCreates,
           lowpanOutDiscards,
           lowpanOutTransmits
       }
       STATUS      current
       DESCRIPTION
           "A collection of objects providing information and
            statistics about the processing of 6LoWPAN datagrams,
            excluding counters covering the processing of datagrams
            with a mesh headers."
       ::= { lowpanGroups 1 }

   lowpanStatsMeshGroup OBJECT-GROUP
       OBJECTS {
           lowpanInMeshForwds,
           lowpanInMeshDelivers,
           lowpanOutMeshHopLimitExceeds,
           lowpanOutMeshNoRoutes,
           lowpanOutMeshRequests,
           lowpanOutMeshForwds,
           lowpanOutMeshTransmits
       }
       STATUS      current
       DESCRIPTION
           "A collection of objects providing information and
            statistics about the processing of 6LoWPAN datagrams
            with a 6LoWPAN mesh header."
       ::= { lowpanGroups 2 }

   lowpanIfStatsGroup OBJECT-GROUP
       OBJECTS {
           lowpanIfReasmTimeout,
           lowpanIfInReceives,
           lowpanIfInHdrErrors,
           lowpanIfInMeshReceives,
           lowpanIfInReasmReqds,
           lowpanIfInReasmFails,

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           lowpanIfInReasmOKs,
           lowpanIfInCompReqds,
           lowpanIfInCompFails,
           lowpanIfInCompOKs,
           lowpanIfInDiscards,
           lowpanIfInDelivers,
           lowpanIfOutRequests,
           lowpanIfOutCompReqds,
           lowpanIfOutCompFails,
           lowpanIfOutCompOKs,
           lowpanIfOutFragReqds,
           lowpanIfOutFragFails,
           lowpanIfOutFragOKs,
           lowpanIfOutFragCreates,
           lowpanIfOutDiscards,
           lowpanIfOutTransmits
       }
       STATUS      current
       DESCRIPTION
           "A collection of objects providing per interface
            information and statistics about the processing
            of 6LoWPAN datagrams, excluding counters covering
            the processing of datagrams with a mesh headers."
       ::= { lowpanGroups 3 }

   lowpanIfStatsMeshGroup OBJECT-GROUP
       OBJECTS {
           lowpanIfInMeshForwds,
           lowpanIfInMeshDelivers,
           lowpanIfOutMeshHopLimitExceeds,
           lowpanIfOutMeshNoRoutes,
           lowpanIfOutMeshRequests,
           lowpanIfOutMeshForwds,
           lowpanIfOutMeshTransmits
       }
       STATUS      current
       DESCRIPTION
           "A collection of objects providing per interface
            information and statistics about the processing
            of 6LoWPAN datagrams with a 6LoWPAN mesh header."
       ::= { lowpanGroups 4 }

   END

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7.  Security Considerations

   Some of the readable objects in this MIB module (i.e., objects with a
   MAX-ACCESS other than not-accessible) may be considered sensitive or
   vulnerable in some network environments.  It is thus important to
   control even GET and/or NOTIFY access to these objects and possibly
   to even encrypt the values of these objects when sending them over
   the network via SNMP.  These are the tables and objects and their
   sensitivity/vulnerability:

   The read-only counters provide insights into the amount of 6LoWPAN
   traffic a node is receiving or transmitting.  This might provide
   information whether a device is regularly exchanging information with
   other devices or whether a device is mostly not participating in any
   communication (e.g., the device might be "easier" to take away
   unnoticed).  The reassembly counters could be used to direct denial
   of service attacks on the reassembly mechanism.

   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 principals (users) that have legitimate
   rights to indeed GET or SET (change/create/delete) them.

8.  IANA Considerations

   IANA is requested to assign a value for "XXXX" under the 'mib-2'
   subtree and to record the assignment in the SMI Numbers registry.
   When the assignment has been made, the RFC Editor is asked to replace
   "XXXX" (here and in the MIB module) with the assigned value and to
   remove this note.

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9.  Acknowledgements

   This specification borrows heavily from the IP-MIB defined in
   [RFC4293].

   Juergen Schoenwaelder and Anuj Sehgal were partly funded by Flamingo,
   a Network of Excellence project (ICT-318488) supported by the
   European Commission under its Seventh Framework Programme.

10.  References

10.1.  Normative References

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

   [RFC2578]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Structure of Management Information
              Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

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

   [RFC2580]  McCloghrie, K., Perkins, D., and J. Schoenwaelder,
              "Conformance Statements for SMIv2", STD 58, RFC 2580,
              April 1999.

   [RFC4944]  Montenegro, G., Kushalnagar, N., Hui, J., and D. Culler,
              "Transmission of IPv6 Packets over IEEE 802.15.4
              Networks", RFC 4944, September 2007.

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

10.2.  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.

   [RFC4113]  Fenner, B. and J. Flick, "Management Information Base for
              the User Datagram Protocol (UDP)", RFC 4113, June 2005.

   [RFC4292]  Haberman, B., "IP Forwarding Table MIB", RFC 4292, April
              2006.

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   [RFC4293]  Routhier, S., "Management Information Base for the
              Internet Protocol (IP)", RFC 4293, April 2006.

   [RFC7252]  Shelby, Z., Hartke, K., and C. Bormann, "The Constrained
              Application Protocol (CoAP)", RFC 7252, June 2014.

   [I-D.ietf-6lo-btle]
              Nieminen, J., Savolainen, T., Isomaki, M., Patil, B.,
              Shelby, Z., and C. Gomez, "Transmission of IPv6 Packets
              over BLUETOOTH(R) Low Energy", draft-ietf-6lo-btle-02
              (work in progress), June 2014.

Authors' Addresses

   Juergen Schoenwaelder
   Jacobs University
   Campus Ring 1
   Bremen  28759
   Germany

   EMail: j.schoenwaelder@jacobs-university.de

   Anuj Sehgal
   Jacobs University
   Campus Ring 1
   Bremen  28759
   Germany

   EMail: s.anuj@jacobs-university.de

   Tina Tsou
   Huawei Technologies (USA)
   2330 Central Expressway
   Santa Clara  CA 95050
   USA

   EMail: tina.tsou.zouting@huawei.com

   Cathy Zhou
   Huawei Technologies
   Bantian, Longgang District
   Shenzhen  518129
   P.R. China

   EMail: cathyzhou@huawei.com

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