Internet DRAFT - draft-schoenw-6lowpan-mib
draft-schoenw-6lowpan-mib
Internet Engineering Task Force J. Schoenwaelder
Internet-Draft A. Sehgal
Intended status: Standards Track Jacobs University
Expires: August 10, 2013 T. Tsou
Huawei Technologies (USA)
C. Zhou
Huawei Technologies
February 6, 2013
Definition of Managed Objects for IPv6 over Low-Power Wireless Personal
Area Networks (6LoWPANs)
draft-schoenw-6lowpan-mib-03
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 managing IPv6 over Low-Power
Wireless Personal Area Networks (6LoWPANs).
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
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is 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 10, 2013.
Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
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to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. The Internet-Standard Management Framework . . . . . . . . . . 3
3. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3
4. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5. Relationship to Other MIB Modules . . . . . . . . . . . . . . 6
6. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 6
7. Security Considerations . . . . . . . . . . . . . . . . . . . 14
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 15
10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15
10.1. Normative References . . . . . . . . . . . . . . . . . . 15
10.2. Informative References . . . . . . . . . . . . . . . . . 16
Appendix A. JSON Representation . . . . . . . . . . . . . . . . . 16
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1. Introduction
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols. In particular it defines
objects for managing IPv6 over Low-Power Wireless Personal Area
Networks (6LoWPANs) [RFC4944].
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
RFC 3410 [RFC3410].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or 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 STD 58,
RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
[RFC2580].
3. Conventions
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 [RFC2119].
4. Overview
The MIB module is organized into groups of scalars and tables.
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# LOWPAN-MIB registration tree (generated by smidump 0.4.8)
--lowpanMIB(1.3.6.1.2.1.XXXX)
+--lowpanNotifications(0)
+--lowpanObjects(1)
| +-- r-n Unsigned32 lowpanReasmTimeout(1)
| +-- r-n Counter32 lowpanInReceives(2)
| +-- r-n Counter32 lowpanInHdrErrors(3)
| +-- r-n Counter32 lowpanInMeshReceives(4)
| +-- r-n Counter32 lowpanInMeshForwds(5)
| +-- r-n Counter32 lowpanInMeshDelivers(6)
| +-- r-n Counter32 lowpanInReasmReqds(7)
| +-- r-n Counter32 lowpanInReasmFails(8)
| +-- r-n Counter32 lowpanInReasmOKs(9)
| +-- r-n Counter32 lowpanInCompReqds(10)
| +-- r-n Counter32 lowpanInCompFails(11)
| +-- r-n Counter32 lowpanInCompOKs(12)
| +-- r-n Counter32 lowpanInDiscards(13)
| +-- r-n Counter32 lowpanInDelivers(14)
| +-- r-n Counter32 lowpanOutRequests(15)
| +-- r-n Counter32 lowpanOutCompReqds(16)
| +-- r-n Counter32 lowpanOutCompFails(17)
| +-- r-n Counter32 lowpanOutCompOKs(18)
| +-- r-n Counter32 lowpanOutFragReqds(19)
| +-- r-n Counter32 lowpanOutFragFails(20)
| +-- r-n Counter32 lowpanOutFragOKs(21)
| +-- r-n Counter32 lowpanOutFragCreates(22)
| +-- r-n Counter32 lowpanOutMeshHopLimitExceeds(23)
| +-- r-n Counter32 lowpanOutMeshNoRoutes(24)
| +-- r-n Counter32 lowpanOutMeshRequests(25)
| +-- r-n Counter32 lowpanOutMeshForwds(26)
| +-- r-n Counter32 lowpanOutMeshTransmits(27)
| +-- r-n Counter32 lowpanOutDiscards(28)
| +-- r-n Counter32 lowpanOutTransmits(29)
+--lowpanConformance(2)
+--lowpanGroups(1)
| +--lowpanCoreGroup(1)
+--lowpanCompliances(2)
+--lowpanCompliance(1)
The counters defined in the MIB module provide information about the
6LoWPAN datagrams received and transmitted and how they are processed
in the 6LoWPAN layer. For the purpose of this specification, a
6LoWPAN datagram is an IEEE 805.14.5 datagram with a dispatch byte
matching the bit patterns 01xxxxxx, 10xxxxxx, or 11xxxxxx. The
processing of IEEE 805.14.5 datagrams matching the bit pattern
00xxxxxx (NALP - not a LoWPAN frame) [RFC4944] is not considered by
this specification. Other radio technologies may use different
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mechanisms to identify 6LoWPAN datagrams (e.g., the BLUETOOTH Low
Energy Logical Link Control and Adaptation Protocol uses Channel
Identifiers [I-D.ietf-6lowpan-btle]). The following Case diagram
illustrates the conceptual relationships of the counters.
IPv6 layer
^ v
InDelivers -+- -+- OutRequests
| |
InDiscards <--+ |
| |
InCompOKs .-->| |-->. OutCompReqds
InCompFails <--| | | +--> OutCompFails
InCompReqds `<--+ +<--' OutCompOKs
| |
| +-->. OutFragReqds
InReasmOKs .-->| | +--> OutFragFails
InReasmFails <--| | | -+- OutFragOKs
InReasmReqds `<--+ +<--' OutFragCreates
| |
| |
InMeshDelivers |<--. |
InMeshForwds | |-->. |
InMeshReceives +-->' | |
| +--> | OutMeshHopLimitExceeds
| +--> | OutMeshNoRoutes
| | |
| | .<--+ OutMeshRequests
| `-->| | OutMeshForwds
| `-->| OutMeshTransmits
| |
InHdrErrors <--+ +--> OutDiscards
| |
InReceives -+- -+- OutTransmits
^ v
interface layer
The fragmentation related counters have been modeled after the
fragmentation related counters of the IP-MIB [RFC4293]. The discard
counters have been placed at the end of the input and output chains
but they can be bumped any time if a datagram is discarded for a
reason not covered by the other counters.
The compression related counters provide insights into compression
requests and in particular also compression related failures. Note
that the diagram is conceptual in the sense that compression happens
after reassembly for incoming 6LoWPAN datagrams and compression
happens before fragmentation for outgoing 6LoWPAN datagrams.
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Implementations may choose to implement things slightly differently.
For example, implementations may decompress FRAG1 fragments as soon
as they are received, not waiting for reassembly to complete.
The mesh header processing related counters do not have an explicit
discard counter. Implementations that do not support mesh forwarding
MUST count the number of received 6LoWPAN datagrams with a MESH
header (lowpanInMeshReceives) but they MUST NOT increment the
lowpanInMeshReceives and lowpanInMeshDelivers counters if these
6LoWPAN datagrams are dropped.
5. Relationship to Other MIB Modules
The MIB module IMPORTS definitions from SNMPv2-SMI [RFC2578] and
SNMPv2-CONF [RFC2580].
6. Definitions
LOWPAN-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, Unsigned32, Counter32, mib-2
FROM SNMPv2-SMI -- RFC 2578
OBJECT-GROUP, MODULE-COMPLIANCE
FROM SNMPv2-CONF; -- RFC 2580
lowpanMIB MODULE-IDENTITY
LAST-UPDATED "201301090000Z"
ORGANIZATION
"Jacobs University Bremen"
CONTACT-INFO
"Juergen Schoenwaelder
Jacobs University Bremen
Email: j.schoenwaelder@jacobs-university.de
Anuj Sehgal
Jacobs University Bremen
Email: s.anuj@jacobs-university.de
Tina Tsou
Huawei Technologies
Email: tina.tsou.zouting@huawei.com
Cathy Zhou
Huawei Technologies
Email: cathyzhou@huawei.com"
DESCRIPTION
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"The MIB module for monitoring nodes implementing the IPv6
over Low-Power Wireless Personal Area Networks (6LoWPAN)
protocol.
Copyright (c) 2013 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject
to the license terms contained in, the Simplified BSD
License set forth in Section 4.c of the IETF Trust's
Legal Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info)."
REVISION "201301090000Z"
DESCRIPTION
"Initial version, published as RFC XXXX."
-- RFC Ed.: replace XXXX with actual RFC number and remove this note
::= { mib-2 XXXX }
-- object definitions
lowpanNotifications OBJECT IDENTIFIER ::= { lowpanMIB 0 }
lowpanObjects OBJECT IDENTIFIER ::= { lowpanMIB 1 }
lowpanConformance OBJECT IDENTIFIER ::= { lowpanMIB 2 }
lowpanReasmTimeout OBJECT-TYPE
SYNTAX Unsigned32
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of seconds that received fragments are
held while they are awaiting reassembly at this entity."
::= { lowpanObjects 1 }
lowpanInReceives OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of 6LoWPAN datagrams received, including
those received in error."
::= { lowpanObjects 2 }
lowpanInHdrErrors OBJECT-TYPE
SYNTAX Counter32
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MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of received 6LoWPAN datagrams discarded due to
errors in their headers, including unknown dispatch values,
errors discovered during any decompression attempts, etc."
::= { lowpanObjects 3 }
lowpanInMeshReceives OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of received 6LoWPAN datagrams with a MESH header."
::= { lowpanObjects 4 }
lowpanInMeshForwds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of received 6LoWPAN datagrams requiring MESH
forwarding."
::= { lowpanObjects 5 }
lowpanInMeshDelivers OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of received 6LoWPAN datagrams with a MESH header
delivered to the local system."
::= { lowpanObjects 6 }
lowpanInReasmReqds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of received 6LoWPAN fragments that needed to
be reassembled. This includes both FRAG1 and FRAGN 6LoWPAN
datagrams."
::= { lowpanObjects 7 }
lowpanInReasmFails OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"The number of failures detected by the re-assembly algorithm
(e.g., timeouts). Note that this is not necessarily a count of
discarded 6LoWPAN fragments since implementations can lose
track of the number of fragments by combining them as
received."
::= { lowpanObjects 8 }
lowpanInReasmOKs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of IPv6 packets successfully reassembled."
::= { lowpanObjects 9 }
lowpanInCompReqds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of 6LoWPAN datagrams requiring header
decompression."
::= { lowpanObjects 10 }
lowpanInCompFails OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of 6LoWPAN datagrams where header decompression
failed (e.g., because the necessary context information is
not available)."
::= { lowpanObjects 11 }
lowpanInCompOKs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of 6LoWPAN datagrams where header decompression
was successful."
::= { lowpanObjects 12 }
lowpanInDiscards OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"The number of received 6LoWPAN datagrams for which no
problems were encountered to prevent their continued
processing, but were discarded (e.g., for lack of buffer
space). Note that this counter does not include any
datagrams discarded due to a reassembly failure."
::= { lowpanObjects 13 }
lowpanInDelivers OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of IPv6 packets successfully delivered
to the IPv6 layer."
::= { lowpanObjects 14 }
lowpanOutRequests OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of IPv6 packets supplied by the IPv6 layer."
::= { lowpanObjects 15 }
lowpanOutCompReqds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of IPv6 packets for which header compression
was attempted."
::= { lowpanObjects 16 }
lowpanOutCompFails OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of IPv6 packets for which header compression
failed (e.g., because the UDP checksum check failed while
performing UDP header compression)."
::= { lowpanObjects 17 }
lowpanOutCompOKs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"The total number of IPv6 packets for which header compression
was successful."
::= { lowpanObjects 18 }
lowpanOutFragReqds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of IPv6 packets that require fragmentation
in order to be transmitted."
::= { lowpanObjects 19 }
lowpanOutFragFails OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of IPv6 packets that have been discarded because
they needed to be fragmented but could not be."
::= { lowpanObjects 20 }
lowpanOutFragOKs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of IPv6 packets that have been successfully
fragmented."
::= { lowpanObjects 21 }
lowpanOutFragCreates OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of 6LoWPAN fragments that have been
generated as a result of fragmentation. This includes
both FRAG1 and FRAGN 6LoWPAN datagrams."
::= { lowpanObjects 22 }
lowpanOutMeshHopLimitExceeds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of 6LoWPAN datagrams with a MESH header that
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were dropped because the hop limit has been exceeded."
::= { lowpanObjects 23 }
lowpanOutMeshNoRoutes OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of 6LoWPAN datagrams with a MESH header that
were dropped because there was no forwarding information
available."
::= { lowpanObjects 24 }
lowpanOutMeshRequests OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of 6LoWPAN datagrams requiring MESH header
encapsulation."
::= { lowpanObjects 25 }
lowpanOutMeshForwds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of 6LoWPAN datagrams with a MESH header for
which suitable forwarding information was available."
::= { lowpanObjects 26 }
lowpanOutMeshTransmits OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of 6LoWPAN datagrams with a MESH header
created."
::= { lowpanObjects 27 }
lowpanOutDiscards OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of IPv6 packets for which no problem was
encountered to prevent their transmission to their
destination, but were discarded (e.g., for lack of
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buffer space)."
::= { lowpanObjects 28 }
lowpanOutTransmits OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of 6LoWPAN datagram that this entity
supplied to the lower layers for transmission."
::= { lowpanObjects 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 {
lowpanCoreGroup
}
::= { lowpanCompliances 1 }
lowpanCoreGroup OBJECT-GROUP
OBJECTS {
lowpanReasmTimeout,
lowpanInReceives,
lowpanInHdrErrors,
lowpanInMeshReceives,
lowpanInMeshForwds,
lowpanInMeshDelivers,
lowpanInReasmReqds,
lowpanInReasmFails,
lowpanInReasmOKs,
lowpanInCompReqds,
lowpanInCompFails,
lowpanInCompOKs,
lowpanInDiscards,
lowpanInDelivers,
lowpanOutRequests,
lowpanOutCompReqds,
lowpanOutCompFails,
lowpanOutCompOKs,
lowpanOutFragReqds,
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lowpanOutFragFails,
lowpanOutFragOKs,
lowpanOutFragCreates,
lowpanOutMeshHopLimitExceeds,
lowpanOutMeshNoRoutes,
lowpanOutMeshRequests,
lowpanOutMeshForwds,
lowpanOutMeshTransmits,
lowpanOutDiscards,
lowpanOutTransmits
}
STATUS current
DESCRIPTION
"A collection of objects providing information and
statistics about the processing of 6LoWPAN datagrams."
::= { lowpanGroups 1 }
END
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).
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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.
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.
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[RFC4944] Montenegro, G., Kushalnagar, N., Hui,
J., and D. Culler, "Transmission of
IPv6 Packets over IEEE 802.15.4
Networks", RFC 4944, September 2007.
[I-D.ietf-6lowpan-btle] Nieminen, J., Savolainen, T., Isomaki,
M., Patil, B., Shelby, Z., and C.
Gomez, "Transmission of IPv6 Packets
over BLUETOOTH Low Energy",
draft-ietf-6lowpan-btle-11 (work in
progress), October 2012.
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.
[RFC4293] Routhier, S., "Management Information
Base for the Internet Protocol (IP)",
RFC 4293, April 2006.
[RFC6643] Schoenwaelder, J., "Translation of
Structure of Management Information
Version 2 (SMIv2) MIB Modules to YANG
Modules", RFC 6643, July 2012.
[I-D.lhotka-netmod-yang-json] Lhotka, L., "Modeling JSON Text with
YANG",
draft-lhotka-netmod-yang-json-00 (work
in progress), October 2012.
Appendix A. JSON Representation
Using the translation algorithm defined in [RFC6643], the SMIv2
module can be translated to YANG. Using the JSON representation of
data modeled in YANG defined in [I-D.lhotka-netmod-yang-json], the
objects defined in the MIB module can be represented in JSON as shown
below. The compact representation without any white space uses 468
octets. (Of course, this number depends on the number of octets
needed for the counter values.)
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{
"LOWPAN-MIB:LOWPAN-MIB": {
"lowpanReasmTimeout": 20,
"lowpanInReceives": 42,
"lowpanInHdrErrors": 0,
"lowpanInMeshReceives": 8,
"lowpanInMeshForwds": 0,
"lowpanInMeshDelivers": 0,
"lowpanInReasmReqds": 22,
"lowpanInReasmFails": 2,
"lowpanInReasmOKs": 20,
"lowpanInCompReqds": 16,
"lowpanInCompFails": 2,
"lowpanInCompOKs": 14,
"lowpanInDiscards": 1,
"lowpanInDelivers": 12,
"lowpanOutRequests": 12,
"lowpanOutCompReqds": 0,
"lowpanOutCompFails": 0,
"lowpanOutCompOKs": 0,
"lowpanOutFragReqds": 5,
"lowpanOutFragFails": 0,
"lowpanOutFragOKs": 5,
"lowpanOutFragCreates": 8,
"lowpanOutMeshHopLimitExceeds": 0,
"lowpanOutMeshNoRoutes": 0,
"lowpanOutMeshRequests": 0,
"lowpanOutMeshForwds": 0,
"lowpanOutMeshTransmits": 0,
"lowpanOutDiscards": 0,
"lowpanOutTransmits": 15
}
}
Authors' Addresses
Juergen Schoenwaelder
Jacobs University
Campus Ring 1
Bremen 28759
Germany
EMail: j.schoenwaelder@jacobs-university.de
Schoenwaelder, et al. Expires August 10, 2013 [Page 17]
Internet-Draft LOWPAN-MIB February 2013
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
Schoenwaelder, et al. Expires August 10, 2013 [Page 18]
