]> Jacobs University

Campus Ring 1 Bremen 28759 Germany j.schoenwaelder@jacobs-university.de

Jacobs University

Campus Ring 1 Bremen 28759 Germany s.anuj@jacobs-university.de

Huawei Technologies

2330 Central Expressway Santa Clara CA 95050 United States tina.tsou.zouting@huawei.com

Huawei Technologies

Bantian, Longgang District 518129 Shenzhen China cathyzhou@huawei.com

Internet Area Internet Engineering Task Force Network Management Management Information Base MIB SMIv2 This document 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).

This document 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) . While a MIB module provides a direct binding for accessing data via the Simple Network Management Protocol (SNMP) , supporting SNMP may not always be affordable on constrained devices. Other protocols to access data modeled in MIB modules are possible and proposals have been made recently to provide bindings to the Constrained Application Protocol (CoAP) .

For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 . 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 document specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 , STD 58, RFC 2579 and STD 58, RFC 2580 .

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14, RFC 2119 .

The left part of provides an overview of the IETF protocols designed for constrained devices. The right part lists the MIB modules providing monitoring and troubleshooting support (, , , and ). The LOWPAN-MIB defined in this document fills a hole by providing monitoring and troubleshooting support for the 6LoWPAN layer.

Protocol Layer MIB Modules +--------------------+ | CoAP [RFC7252] | +--------------------+ +--------------------------+ | UDP [RFC0768] | | UDP-MIB [RFC4113] | +--------------------+ +--------------------------+ | IPv6 [RFC2460] | | IP-MIB [RFC4293] | | ICMPv6 [RFC4443] | | IP-FORWARD-MIB [RFC4292] | +--------------------+ +--------------------------+ | 6LoWPAN [RFC4944] | | LOWPAN-MIB [RFC7388] | +--------------------+ +--------------------------+ | IF-MIB [RFC2863] | +--------------------+ +--------------------------+ | IEEE 802.15.4, ... | +--------------------+

The LOWPAN-MIB module is primarily a collection of counters that reflect how 6LoWPAN datagrams are processed by the 6LoWPAN layer. The objects are defined twice: once to report the global statistics as seen by the 6LoWPAN layer and once to report per-interface 6LoWPAN layer statistics. The per-interface statistics are optional to implement. The object identifier registration tree has the following structure:

---- lowpanMIB(1.3.6.1.2.1.226) +---- lowpanNotifications(0) +---- lowpanObjects(1) | +---- lowpanStats(1) | | +--r- lowpanReasmTimeout(1) Unsigned32 | | +--r- lowpanInReceives(2) Counter32 | | +--r- lowpanInHdrErrors(3) Counter32 | | +--r- lowpanInMeshReceives(4) Counter32 | | +--r- lowpanInMeshForwds(5) Counter32 | | +--r- lowpanInMeshDelivers(6) Counter32 | | +--r- lowpanInReasmReqds(7) Counter32 | | +--r- lowpanInReasmFails(8) Counter32 | | +--r- lowpanInReasmOKs(9) Counter32 | | +--r- lowpanInCompReqds(10) Counter32 | | +--r- lowpanInCompFails(11) Counter32 | | +--r- lowpanInCompOKs(12) Counter32 | | +--r- lowpanInDiscards(13) Counter32 | | +--r- lowpanInDelivers(14) Counter32 | | +--r- lowpanOutRequests(15) Counter32 | | +--r- lowpanOutCompReqds(16) Counter32 | | +--r- lowpanOutCompFails(17) Counter32 | | +--r- lowpanOutCompOKs(18) Counter32 | | +--r- lowpanOutFragReqds(19) Counter32 | | +--r- lowpanOutFragFails(20) Counter32 | | +--r- lowpanOutFragOKs(21) Counter32 | | +--r- lowpanOutFragCreates(22) Counter32 | | +--r- lowpanOutMeshHopLimitExceeds(23) Counter32 | | +--r- lowpanOutMeshNoRoutes(24) Counter32 | | +--r- lowpanOutMeshRequests(25) Counter32 | | +--r- lowpanOutMeshForwds(26) Counter32 | | +--r- lowpanOutMeshTransmits(27) Counter32 | | +--r- lowpanOutDiscards(28) Counter32 | | +--r- lowpanOutTransmits(29) Counter32 | +---- lowpanIfStatsTable(2) | +---- lowpanIfStatsEntry(1) [ifIndex] | +--r- lowpanIfReasmTimeout(1) Unsigned32 | +--r- lowpanIfInReceives(2) Counter32 | +--r- lowpanIfInHdrErrors(3) Counter32 | +--r- lowpanIfInMeshReceives(4) Counter32 | +--r- lowpanIfInMeshForwds(5) Counter32 | +--r- lowpanIfInMeshDelivers(6) Counter32 | +--r- lowpanIfInReasmReqds(7) Counter32 | +--r- lowpanIfInReasmFails(8) Counter32 | +--r- lowpanIfInReasmOKs(9) Counter32 | +--r- lowpanIfInCompReqds(10) Counter32 | +--r- lowpanIfInCompFails(11) Counter32 | +--r- lowpanIfInCompOKs(12) Counter32 | +--r- lowpanIfInDiscards(13) Counter32 | +--r- lowpanIfInDelivers(14) Counter32 | +--r- lowpanIfOutRequests(15) Counter32 | +--r- lowpanIfOutCompReqds(16) Counter32 | +--r- lowpanIfOutCompFails(17) Counter32 | +--r- lowpanIfOutCompOKs(18) Counter32 | +--r- lowpanIfOutFragReqds(19) Counter32 | +--r- lowpanIfOutFragFails(20) Counter32 | +--r- lowpanIfOutFragOKs(21) Counter32 | +--r- lowpanIfOutFragCreates(22) Counter32 | +--r- lowpanIfOutMeshHopLimitExceeds(23) Counter32 | +--r- lowpanIfOutMeshNoRoutes(24) Counter32 | +--r- lowpanIfOutMeshRequests(25) Counter32 | +--r- lowpanIfOutMeshForwds(26) Counter32 | +--r- lowpanIfOutMeshTransmits(27) Counter32 | +--r- lowpanIfOutDiscards(28) Counter32 | +--r- lowpanIfOutTransmits(29) Counter32 +---- lowpanConformance(2) +---- lowpanGroups(1) | +---- lowpanStatsGroup(1) | +---- lowpanStatsMeshGroup(2) | +---- lowpanIfStatsGroup(3) | +---- lowpanIfStatsMeshGroup(4) +---- lowpanCompliances(2) +---- lowpanCompliance(1)

The counters defined in the LOWPAN-MIB module provide information about the 6LoWPAN datagrams received and transmitted and how they are processed in the 6LoWPAN layer. For link layers that use the 6LoWPAN dispatch byte as defined in (e.g., IEEE 802.15.4), a 6LoWPAN datagram is a datagram with a dispatch byte matching the bit patterns 01xxxxxx, 10xxxxxx, or 11xxxxxx. Datagrams with a dispatch byte matching the bit pattern 00xxxxxx (NALP - not a LoWPAN frame) are not considered to be 6LoWPAN datagrams by this specification. Other radio technologies may use different mechanisms to identify 6LoWPAN datagrams (e.g., the BLUETOOTH Low-Energy Logical Link Control and Adaptation Protocol uses Channel Identifiers ). The Case Diagram in illustrates the conceptual relationships between the counters. Implementations may choose to implement the processing of 6LoWPAN datagrams in a different order. The generic InDiscards and OutDiscards counters can be incremented anytime 6LoWPAN datagrams are discarded due to reasons not covered by the other more specific counters. For example, an implementation discarding 6LoWPAN datagrams while all buffers are used for ongoing packet reassemblies will increment the relevant InDiscards counters for each discarded 6LoWPAN datagram.

| |-->. 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 . 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, 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. 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 counters related to MESH header processing 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.

The MIB module imports definitions from SNMPv2-SMI , SNMPv2-CONF , and IF-MIB .

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 ifIndex FROM IF-MIB; -- RFC 2863 lowpanMIB MODULE-IDENTITY LAST-UPDATED "201410100000Z" -- October 10, 2014 ORGANIZATION "IETF IPv6 over Networks of Resource-constrained Nodes Working Group" CONTACT-INFO "WG Email: 6lo@ietf.org WG Web: http://tools.ietf.org/wg/6lo/ 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 "The MIB module for monitoring nodes implementing the IPv6 over Low-Power Wireless Personal Area Networks (6LoWPAN) protocol. Copyright (c) 2014 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 "201410100000Z" -- October 10, 2014 DESCRIPTION "Initial version, published as RFC 7388." ::= { mib-2 226 } -- object definitions lowpanNotifications OBJECT IDENTIFIER ::= { lowpanMIB 0 } lowpanObjects OBJECT IDENTIFIER ::= { lowpanMIB 1 } lowpanConformance OBJECT IDENTIFIER ::= { lowpanMIB 2 } lowpanStats OBJECT IDENTIFIER ::= { lowpanObjects 1 } 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." ::= { lowpanStats 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." ::= { lowpanStats 2 } lowpanInHdrErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of received 6LoWPAN datagrams discarded due to errors in their headers, including unknown dispatch values." ::= { lowpanStats 3 } lowpanInMeshReceives OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of received 6LoWPAN datagrams with a MESH header." ::= { lowpanStats 4 } lowpanInMeshForwds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of received 6LoWPAN datagrams requiring mesh forwarding." ::= { lowpanStats 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." ::= { lowpanStats 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." ::= { lowpanStats 7 } lowpanInReasmFails OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current 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." ::= { lowpanStats 8 } lowpanInReasmOKs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of IPv6 packets successfully reassembled." ::= { lowpanStats 9 } lowpanInCompReqds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams requiring header decompression." ::= { lowpanStats 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 was not available)." ::= { lowpanStats 11 } lowpanInCompOKs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams where header decompression was successful." ::= { lowpanStats 12 } lowpanInDiscards OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of received 6LoWPAN datagrams that were discarded (e.g., for lack of buffer space) even though no problems were encountered to prevent their continued processing. Note that this counter does not include any datagrams discarded due to a reassembly failure or a compression failure." ::= { lowpanStats 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." ::= { lowpanStats 14 } lowpanOutRequests OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of IPv6 packets supplied by the IPv6 layer." ::= { lowpanStats 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." ::= { lowpanStats 16 } lowpanOutCompFails OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of IPv6 packets for which header compression failed." ::= { lowpanStats 17 } lowpanOutCompOKs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of IPv6 packets for which header compression was successful." ::= { lowpanStats 18 } lowpanOutFragReqds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of IPv6 packets that required fragmentation in order to be transmitted." ::= { lowpanStats 19 } lowpanOutFragFails OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of IPv6 packets that have been discarded because fragmentation failed." ::= { lowpanStats 20 } lowpanOutFragOKs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of IPv6 packets that have been successfully fragmented." ::= { lowpanStats 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." ::= { lowpanStats 22 } lowpanOutMeshHopLimitExceeds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams with a MESH header that were dropped because the hop limit was exceeded." ::= { lowpanStats 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." ::= { lowpanStats 24 } lowpanOutMeshRequests OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams requiring MESH header encapsulation." ::= { lowpanStats 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." ::= { lowpanStats 26 } lowpanOutMeshTransmits OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams with a MESH header created." ::= { lowpanStats 27 } lowpanOutDiscards OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of IPv6 packets that were discarded (e.g., for lack of buffer space) even though no problem was encountered to prevent their transmission to their destination." ::= { lowpanStats 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." ::= { lowpanStats 29 } lowpanIfStatsTable OBJECT-TYPE SYNTAX SEQUENCE OF LowpanIfStatsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table providing per-interface statistics." ::= { lowpanObjects 2 } lowpanIfStatsEntry OBJECT-TYPE SYNTAX LowpanIfStatsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry providing statistics for a specific interface." INDEX { ifIndex } ::= { lowpanIfStatsTable 1 } LowpanIfStatsEntry ::= SEQUENCE { lowpanIfReasmTimeout Unsigned32, lowpanIfInReceives Counter32, lowpanIfInHdrErrors Counter32, lowpanIfInMeshReceives Counter32, lowpanIfInMeshForwds Counter32, lowpanIfInMeshDelivers Counter32, lowpanIfInReasmReqds Counter32, lowpanIfInReasmFails Counter32, lowpanIfInReasmOKs Counter32, lowpanIfInCompReqds Counter32, lowpanIfInCompFails Counter32, lowpanIfInCompOKs Counter32, lowpanIfInDiscards Counter32, lowpanIfInDelivers Counter32, lowpanIfOutRequests Counter32, lowpanIfOutCompReqds Counter32, lowpanIfOutCompFails Counter32, lowpanIfOutCompOKs Counter32, lowpanIfOutFragReqds Counter32, lowpanIfOutFragFails Counter32, lowpanIfOutFragOKs Counter32, lowpanIfOutFragCreates Counter32, lowpanIfOutMeshHopLimitExceeds Counter32, lowpanIfOutMeshNoRoutes Counter32, lowpanIfOutMeshRequests Counter32, lowpanIfOutMeshForwds Counter32, lowpanIfOutMeshTransmits Counter32, lowpanIfOutDiscards Counter32, lowpanIfOutTransmits Counter32 } lowpanIfReasmTimeout 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 interface." ::= { lowpanIfStatsEntry 1 } lowpanIfInReceives OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of 6LoWPAN datagrams received on this interface, including those received in error." ::= { lowpanIfStatsEntry 2 } lowpanIfInHdrErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams received on this interface that were discarded due to errors in their headers, including unknown dispatch values." ::= { lowpanIfStatsEntry 3 } lowpanIfInMeshReceives OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams received on this interface with a MESH header." ::= { lowpanIfStatsEntry 4 } lowpanIfInMeshForwds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams received on this interface requiring mesh forwarding." ::= { lowpanIfStatsEntry 5 } lowpanIfInMeshDelivers OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams received on this interface with a MESH header delivered to the local system." ::= { lowpanIfStatsEntry 6 } lowpanIfInReasmReqds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN fragments received on this interface that needed to be reassembled. This includes both FRAG1 and FRAGN 6LoWPAN datagrams." ::= { lowpanIfStatsEntry 7 } lowpanIfInReasmFails OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of failures detected by the reassembly algorithm (e.g., timeouts) for datagrams received on this interface. 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." ::= { lowpanIfStatsEntry 8 } lowpanIfInReasmOKs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of IPv6 packets successfully reassembled from fragments received on this interface." ::= { lowpanIfStatsEntry 9 } lowpanIfInCompReqds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams received on this interface requiring header decompression." ::= { lowpanIfStatsEntry 10 } lowpanIfInCompFails OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams received on this interface where header decompression failed (e.g., because the necessary context information was not available)." ::= { lowpanIfStatsEntry 11 } lowpanIfInCompOKs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams received on this interface where header decompression was successful." ::= { lowpanIfStatsEntry 12 } lowpanIfInDiscards OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN datagrams received on this interface that were discarded (e.g., for lack of buffer space) even though no problems were encountered to prevent their continued processing. Note that this counter does not include any datagrams discarded due to a reassembly failure or a compression failure." ::= { lowpanIfStatsEntry 13 } lowpanIfInDelivers OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of IPv6 packets received on this interface that were successfully delivered to the IPv6 layer." ::= { lowpanIfStatsEntry 14 } lowpanIfOutRequests OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of IPv6 packets supplied by the IPv6 layer to be sent over this interface." ::= { lowpanIfStatsEntry 15 } lowpanIfOutCompReqds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of IPv6 packets to be sent over this interface for which header compression was attempted." ::= { lowpanIfStatsEntry 16 } lowpanIfOutCompFails OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of IPv6 packets to be sent over this interface for which header compression failed." ::= { lowpanIfStatsEntry 17 } lowpanIfOutCompOKs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of IPv6 packets to be sent over this interface for which header compression was successful." ::= { lowpanIfStatsEntry 18 } lowpanIfOutFragReqds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of IPv6 packets to be sent over this interface that required fragmentation in order to be transmitted." ::= { lowpanIfStatsEntry 19 } lowpanIfOutFragFails OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of IPv6 packets to be sent over this interface that have been discarded because fragmentation failed." ::= { lowpanIfStatsEntry 20 } lowpanIfOutFragOKs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of IPv6 packets to be sent over this interface that have been successfully fragmented." ::= { lowpanIfStatsEntry 21 } lowpanIfOutFragCreates OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of 6LoWPAN fragments that have been generated on this interface as a result of fragmentation. This includes both FRAG1 and FRAGN 6LoWPAN datagrams." ::= { lowpanIfStatsEntry 22 } lowpanIfOutMeshHopLimitExceeds 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 the hop limit was exceeded." ::= { lowpanIfStatsEntry 23 } 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 sent 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 that were discarded (e.g., for lack of buffer space) even though no problem was encountered to prevent their transmission to their destination." ::= { lowpanIfStatsEntry 28 } 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 a MESH header." 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 a MESH header." ::= { lowpanCompliances 1 } lowpanStatsGroup OBJECT-GROUP OBJECTS { lowpanReasmTimeout, lowpanInReceives, lowpanInHdrErrors, lowpanInMeshReceives, lowpanInReasmReqds, lowpanInReasmFails, lowpanInReasmOKs, lowpanInCompReqds, 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 header." ::= { 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 MESH header." ::= { lowpanGroups 2 } lowpanIfStatsGroup OBJECT-GROUP OBJECTS { lowpanIfReasmTimeout, lowpanIfInReceives, lowpanIfInHdrErrors, lowpanIfInMeshReceives, lowpanIfInReasmReqds, lowpanIfInReasmFails, 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 header." ::= { 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 MESH header." ::= { lowpanGroups 4 } END

There are no management objects defined in this MIB module that have a MAX-ACCESS clause of read-write and/or read-create. So, if this MIB module is implemented correctly, then there is no risk that an intruder can alter or create any management objects of this MIB module via direct SNMP SET operations. 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. The read-only counters provide insights into the amount of 6LoWPAN traffic a node is receiving or transmitting. This might provide information regarding 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 , 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.

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

Descriptor OBJECT IDENTIFIER value ---------- ----------------------- lowpanMIB { mib-2 226 }

Harvard University

1350 Mass. Ave. Cambridge MA 02138 - +1 617 495 3864 sob@harvard.edu

General keyword Cisco Systems, Inc.

170 West Tasman Drive San Jose CA 95134-1706 US +1 408 526 5260 kzm@cisco.com

SNMPinfo

3763 Benton Street Santa Clara CA 95051 US +1 408 221 8702 dperkins@snmpinfo.com

TU Braunschweig

Bueltenweg 74/75 38106 Braunschweig DE +49 531 3913283 schoenw@ibr.cs.tu-bs.de

Cisco Systems, Inc.

170 West Tasman Drive San Jose CA 95134-1706 US +1 408 526 5260 kzm@cisco.com

SNMPinfo

3763 Benton Street Santa Clara CA 95051 US +1 408 221 8702 dperkins@snmpinfo.com

TU Braunschweig

Bueltenweg 74/75 38106 Braunschweig DE +49 531 3913283 schoenw@ibr.cs.tu-bs.de

Cisco Systems, Inc.

170 West Tasman Drive San Jose CA 95134-1706 US +1 408 526 5260 kzm@cisco.com

SNMPinfo

3763 Benton Street Santa Clara CA 95051 US +1 408 221 8702 dperkins@snmpinfo.com

TU Braunschweig

Bueltenweg 74/75 Braunschweig 38106 DE +49 531 3913283 schoenw@ibr.cs.tu-bs.de

University of Southern California (USC)/Information Sciences Institute

4676 Admiralty Way Marina del Rey CA 90291 US +1 213 822 1511

Cisco Systems, Inc.

170 West Tasman Drive San Jose CA 95134-1706 USA +1 408 527 8213 +1 408 527 8254 deering@cisco.com

Nokia

232 Java Drive Sunnyvale CA 94089 USA +1 408 990 2004 +1 408 743 5677 hinden@iprg.nokia.com

Internet internet protocol version 6 IPv6

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