Network Working Group
INTERNET-DRAFT Sam Aldrin
Intended Status: Standards Track Huawei Technologies
Expires: April 28, 2012 M.Venkatesan
Kannan KV Sampath
Aricent Group
Thomas D. Nadeau
CA Technologies
October 26, 2011
BFD Management Information Base (MIB) extensions
for MPLS and MPLS-TP Networks
draft-vkst-bfd-mpls-mib-00
Abstract
This draft defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it extends the BFD Management Information Base BFD-
STD-MIB and describes the managed objects for modeling Bidirectional
Forwarding Detection (BFD) protocol for MPLS and MPLS-TP networks.
Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet-
Drafts.
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."
The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html.
This Internet-Draft will expire on April 28, 2012.
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Copyright Notice
Copyright (c) 2011 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
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. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1 Conventions used in this document . . . . . . . . . . . . . 3
3.2 Terminology . . . . . . . . . . . . . . . . . . . . . . . . 3
4. Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5. Brief description of MIB Objects . . . . . . . . . . . . . . . 4
5.1. Extensions to the BFD session table (bfdSessionTable) . . . 4
5.2. Example of BFD session configuration . . . . . . . . . . . 6
5.3. BFD objects for session performance counters . . . . . . . 7
5.4. Notification Objects . . . . . . . . . . . . . . . . . . . 8
6. BFD MPLS-MPLS-TP MIB Module Definition . . . . . . . . . . . . 8
7. Security Considerations . . . . . . . . . . . . . . . . . . . . 16
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 16
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9.1 Normative References . . . . . . . . . . . . . . . . . . . . 16
9.2 Informative References . . . . . . . . . . . . . . . . . . . 17
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 17
11. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 17
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1 Introduction
Current MIB for BFD as defined by BFD-STD-MIB is used for neighbor
monitoring in IP networks. The BFD session association to the
neighbors being monitored is done using the source and destination IP
addresses of the neighbors configured using the respective MIB
objects.
To monitor MPLS/MPLS-TP paths like tunnels or Pseudowires, there is a
necessity to identify or associate the BFD session to those paths.
This memo defines an portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it extends the BFD Management Information Base BFD-
STD-MIB and describes the managed objects to configure and/or monitor
Bidirectional Forwarding Detection (BFD) protocol for MPLS [BFD-MPLS]
and MPLS-TP networks [MPLS-TP-CC-CV-RDI].
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 [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,
RFC2578, STD 58, RFC2579 and STD58, RFC2580.
3. Overview
3.1 Conventions used in this document
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].
3.2 Terminology
This document adopts the definitions, acronyms and mechanisms
described in [BFD], [BFD-1HOP], [BFD-MH], [BFD-MPLS], [MPLS-TP-CC-CV-
RDI]. Unless otherwise stated, the mechanisms described therein will
not be re-described here.
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4. Acronyms
BFD: Bidirectional Forwarding Detection
IP: Internet Protocol
LSP: Label Switching Path
LSR: Label Switching Router
MIB: Management Information Base
MPLS: Multi-Protocol Label Switching
MPLS-TP: MPLS Transport Profile
ME: Maintenance Entity
MEG: Maintenance Entity Group
MEP: Maintenance Entity End-Point
PW: Pseudowire
TP: Transport Profile
5. Brief description of MIB Objects
The objects described in this section support the functionality
described in documents [BFD-MPLS] and [MPLS-TP-CC-CV-RDI]. The
objects are defined as an extension to the BFD base MIB defined by
BFD-STD-MIB.
5.1. Extensions to the BFD session table (bfdSessionTable)
The BFD session table used to identify a BFD session between a pair
of nodes, as defined in BFD-STD-MIB, is extended with managed objects
to achieve the required functionality in MPLS and MPLS-TP networks as
described below:
1. SessionRole - Active/Passive role specification for the BFD
session configured on the node. Either end of a BFD session
can be configured as Active/Passive to determine which
end starts transmitting the BFD control packets.
2. SessionMode - Defines the mode in which BFD
session is running, defined as below:
i. CC - Only Continuity Check and RDI functionality is
performed.
ii. CV - Provides for Continuity Check, Connectivity
Verification and RDI functionalities to be
supported.
3. Timer Negotiation Flag - Provides for timer negotiation
to be enabled or disabled. This object can be used to tune
the detection of period-misconfiguration.
4. Map Type - Indicates the type of the path being monitored by
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the BFD session.
This object can take the following values:
For BFD session over MPLS based paths:
nonTeIpv4 (1) - BFD session configured for Non-TE
Ipv4 path
nonTeIpv6 (2) - BFD session configured for Non-TE
Ipv6 path
teIpv4 (3) - BFD session configured for a TE
Ipv4 path
teIpv6 (4) - BFD session configured for a TE
Ipv6 path
pw (5) - BFD session configured for a PW
For MPLS-TP based paths:
mep (6) - BFD session configured for an MPLS-TP path
(Bidirectional tunnel, PW or Sections) will map to
the corresponding maintenance entity.
5. Map Pointer
A Row Pointer object which can be used to point to the first
accessible object in the respective instance of the table entry
identifying the path being monitored (mplsXCEntry/mplsTunnelEntry/
pwEntry respectively for LSP/Tunnel/PW).
For NON-TE LSP, the Map pointer points to the corresponding
mplsXCEntry.
For TE based tunnel, the Map pointer points to the corresponding
instance of the mplsTunnelEntry.
For PW, this object points to the corresponding instance of
pwEntry.
For MPLS-TP paths, this object points to the corresponding
instance of mplsOamIdMeEntry configured to monitor the
MPLS-TP path associated with the BFD session.
6. Usage of existing object bfdSessType:
Additionally existing object "bfdSessType" in the base MIB can be
used with the already defined value multiHopOutOfBandSignaling(3)
to specify an OOB (Out of band) mechanism [E.g. LSP Ping] for
bootstrapping the BFD session.
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5.2. Example of BFD session configuration
This section provides an example BFD session configuration
for an MPLS TE tunnel. This example is only meant to enable
an understanding of the proposed extension and does not
illustrate every permutation of the MIB.
The following denotes the configured tunnel "head" entry:
In mplsTunnelTable:
{
mplsTunnelIndex = 100,
mplsTunnelInstance = 1,
mplsTunnelIngressLSRId = 192.0.2.1,
mplsTunnelEgressLSRId = 192.0.2.3,
mplsTunnelName = "Tunnel",
...
mplsTunnelSignallingProto = none (1),
mplsTunnelSetupPrio = 0,
mplsTunnelHoldingPrio = 0,
mplsTunnelSessionAttributes = 0,
mplsTunnelLocalProtectInUse = false (0),
mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.5,
mplsTunnelInstancePriority = 1,
mplsTunnelHopTableIndex = 1,
mplsTunnelIncludeAnyAffinity = 0,
mplsTunnelIncludeAllAffinity = 0,
mplsTunnelExcludeAnyAffinity = 0,
mplsTunnelPathInUse = 1,
mplsTunnelRole = head (1),
...
mplsTunnelRowStatus = Active
}
BFD session parameters used to monitor this tunnel should be
configured on head-end as follows:
In bfdSessTable:
BfdSessEntry ::= SEQUENCE {
-- BFD session index
bfdSessIndex = 2,
bfdSessVersionNumber = 1,
-- LSP Ping used for OOB bootstrapping
bfdSessType = multiHopOutOfBandSignaling,
...
bfdSessAdminStatus = start,
...
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bfdSessDemandModeDesiredFlag = false,
bfdSessControlPlaneIndepFlag = false,
bfdSessMultipointFlag = false,
bfdSessDesiredMinTxInterval = 100000,
bfdSessReqMinRxInterval = 100000,
...
-- Indicates that the BFD session is to monitor an
MPLS TE tunnel
bfdSessExtMapType = teIpv4(3),
-- OID of the first accessible object (mplsTunnelName) of
the mplsTunnelEntry identifying the MPLS TE tunnel (being
monitored using BFD) in the MPLS tunnel table.
A value of zeroDotzero indicates that no association
has been made as yet between the BFD session and the path
being monitored.
In the above OID example:
100 -> Tunnel Index
1 -> Tunnel instance
3221225985 -> Ingress LSR Id 192.0.2.1
3221225987 -> Egress LSR Id 192.0.2.3
bfdSessExtMapPointer
= mplsTunnelName.100.1.3221225985.3221225987,
bfdSessRowStatus = createAndGo
}
Similarly BFD session would be configured on the tail-end of
the tunnel. Creating the above row will trigger the bootstrapping
of the session using LSP Ping and its subsequent establishment
over the path by de-multiplexing of the control packets using
the BFD session discriminators.
5.3. BFD objects for session performance counters
BFD-STD-MIB defines BFD Session Performance Table
(bfdSessionPerfTable), for collecting per-session BFD performance
counters, as an extension to the bfdSessionTable.
The bfdSessionPerfTable is extended with the performance counters
to collect Mis-connectivity Defect, Loss of Continuity Defect
and RDI (Remote Defect Indication) counters.
1. bfdSessExtPerfMisDefCount - Mis-connectivity defect count
for this BFD session.
2. bfdSessExtPerfLocDefCount - Loss of continuity defect count for
this BFD session.
3. bfdSessExtPerfRdiInCount - Total number of RDI messages received
for this BFD session.
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4. bfdSessExtPerfRdiOutCount - Total number of RDI messages sent
for this BFD session.
5.4. Notification Objects
To be added in the next version of this document.
6. BFD MPLS-MPLS-TP MIB Module Definition
BFD-EXT-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, Counter32
FROM SNMPv2-SMI -- [RFC2578]
RowPointer,TruthValue,TEXTUAL-CONVENTION
FROM SNMPv2-TC -- [RFC2579]
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF -- [RFC2580]
bfdSessIndex
FROM BFD-STD-MIB;
bfdExtMib MODULE-IDENTITY
LAST-UPDATED "201110250000Z" -- October 25 2011
ORGANIZATION "IETF Bidirectional Forwarding Detection
Working Group"
CONTACT-INFO
"
Sam Aldrin
Huawei Technologies
2330 Central Express Way,
Santa Clara, CA 95051, USA
Email: aldrin.ietf@gmail.com
Venkatesan Mahalingam
Aricent
India
Email: venkat.mahalingams@gmail.com
Mukund Mani
Aricent
India
Email: mukund.mani@gmail.com
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Kannan KV Sampath
Aricent
India
Email: Kannan.Sampath@aricent.com
Thomas D. Nadeau
CA Technologies
273 Corporate Drive, Portsmouth, NH, USA
Email: thomas.nadeau@ca.com"
DESCRIPTION
" Copyright (c) 2011 IETF Trust and the persons identified
as the document authors. All rights reserved.
This MIB module is an initial version containing objects
to provide a proactive mechanism to detect faults using
BFD for MPLS and MPLS-TP networks"
REVISION "201110250000Z" -- October 25 2011
DESCRIPTION
" Initial version published as RFC xxx "
-- RFC Ed.: RFC-editor pls fill in xxxx
::= { mib-2 XXX } -- XXX to be replaced with correct value
-- RFC Ed.: assigned by IANA
-- ------------------------------------------------------------
-- groups in the MIB
-- ------------------------------------------------------------
bfdExtObjects OBJECT IDENTIFIER ::= { bfdExtMib 0 }
bfdExtConformance OBJECT IDENTIFIER ::= { bfdExtMib 1 }
-- ------------------------------------------------------------
-- Textual Conventions
-- ------------------------------------------------------------
SessionMapTypeTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Used to indicate the type of MPLS or MPLS-TP path
associated to the session"
SYNTAX INTEGER {
nonTeIpv4(1), -- mapping into LDP IPv4
nonTeIpv6(2), -- mapping into LDP IPv6
teIpv4(3), -- mapping into TE IPv4
teIpv6(4), -- mapping into TE IPv6
pw(5), -- mapping into Pseudowires
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mep(6) -- mapping into MEPs in MPLS-TP
}
-- ------------------------------------------------------------------
-- BFD session table extensions for BFD on MPLS and MPLS-TP
-- ------------------------------------------------------------------
-- bfdSessExtTable - bfdSessTable Extension
bfdSessExtTable OBJECT-TYPE
SYNTAX SEQUENCE OF BfdSessExtEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is an extension to the bfdSessTable for
configuring BFD sessions for MPLS or MPLS-TP paths."
::= { bfdExtObjects 1 }
bfdSessExtEntry OBJECT-TYPE
SYNTAX BfdSessExtEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A row in this table extends a row in bfdSessTable."
INDEX { bfdSessIndex }
::= { bfdSessExtTable 1 }
BfdSessExtEntry ::= SEQUENCE {
bfdSessExtRole INTEGER,
bfdSessExtMode INTEGER,
bfdSessExtTmrNegotiate TruthValue,
bfdSessExtMapType SessionMapTypeTC,
bfdSessExtMapPointer RowPointer
}
bfdSessExtRole OBJECT-TYPE
SYNTAX INTEGER {
active(1),
passive(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object specifies whether the system is playing the
active(1) role or the passive(2) role for this
BFD session."
REFERENCE
"RFC 5880, Section 6.1"
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DEFVAL { active }
::= { bfdSessExtEntry 1 }
bfdSessExtMode OBJECT-TYPE
SYNTAX INTEGER {
cc(1),
cv(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object specifies whether the BFD session is running
in Continuity Check(CC) or the Connectivity
Verification(CV) mode."
REFERENCE
"1.Proactive Connectivity Verification, Continuity Check
and Remote Defect Indication for MPLS Transport
Profile, draft-ietf-mpls-tp-cc-cv-rdi-06"
DEFVAL { cc }
::= { bfdSessExtEntry 2 }
bfdSessExtTmrNegotiate OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object specifies if timer negotiation is required for
the BFD session. When set to false, timer negotiation is
disabled"
DEFVAL { true }
::= { bfdSessExtEntry 3 }
bfdSessExtMapType OBJECT-TYPE
SYNTAX SessionMapTypeTC
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object indicates the type of path being monitored
by this BFD session entry."
::= { bfdSessExtEntry 4 }
bfdSessExtMapPointer OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If bfdSessExtMapType is nonTeIpv4(1) or nonTeIpv6(2), then
this object MUST contain zeroDotZero or point to
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an instance of the mplsXCEntry indicating the LDP-based
LSP associated with this BFD session.
If bfdSessExtMapType is teIpv4(3) or teIpv6(4), then
this object MUST contain zeroDotZero or point to
an instance of the mplsTunnelEntry indicating
the RSVP-based MPLS TE tunnel associated with this
BFD session.
If bfdSessExtMapType is pw(5), then this object MUST
contain zeroDotZero or point to an instance of
the pwEntry indicating the MPLS Pseudowire associated
with this BFD session.
If bfdExtSessMapTpye is mep(6). then this object MUST
contain zeroDotZero or point to an instance identifying
the mplsOamIdMeEntry configured for monitoring the MPLS-TP
path associated with this BFD session.
If this object points to a conceptual row instance
in a table consistent with bfdSessExtMapType but this
instance does not currently exist then no valid
path is associated with this session entry.
If this object contains zeroDotZero then no valid path is
associated with this BFD session entry till it is
populated with a valid pointer consistent with
the value of bfdSessExtMapType as explained above."
::= { bfdSessExtEntry 5 }
-- ------------------------------------------------------------------
-- BFD Objects for Session performance
-- -----------------------------------------------------------------
-- bfdSessExtPerfTable - bfdSessPerfTable Extension
bfdSessExtPerfTable OBJECT-TYPE
SYNTAX SEQUENCE OF BfdSessExtPerfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is an extension to the bfdSessPerfTable"
::= { bfdExtObjects 2 }
bfdSessExtPerfEntry OBJECT-TYPE
SYNTAX BfdSessExtPerfEntry
MAX-ACCESS not-accessible
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STATUS current
DESCRIPTION
"A row in this table extends the bfdSessPerfTable"
INDEX { bfdSessIndex }
::= { bfdSessExtPerfTable 1 }
BfdSessExtPerfEntry ::= SEQUENCE {
bfdSessExtPerfMisDefCount Counter32,
bfdSessExtPerfLocDefCount Counter32,
bfdSessExtPerfRdiInCount Counter32,
bfdSessExtPerfRdiOutCount Counter32
}
bfdSessExtPerfMisDefCount OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object gives a count of the mis-connectivity defects
detected for the BFD session. For instance, this count
will be incremented when the received BFD control packet
carries an incorrect globally unique source
MEP identifier."
::= { bfdSessExtPerfEntry 1 }
bfdSessExtPerfLocDefCount OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object gives a count of the Loss of continuity
defects detected in MPLS and MPLS-TP paths"
::= { bfdSessExtPerfEntry 2 }
bfdSessExtPerfRdiInCount OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object gives a count of the Remote Defect
Indications received for the BFD session."
::= { bfdSessExtPerfEntry 3 }
bfdSessExtPerfRdiOutCount OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
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STATUS current
DESCRIPTION
"This object gives a count of the Remote Defect
Indications sent by the BFD session"
::= { bfdSessExtPerfEntry 4 }
-- Module compliance
bfdExtGroups
OBJECT IDENTIFIER ::= { bfdExtConformance 1 }
bfdExtCompliances
OBJECT IDENTIFIER ::= { bfdExtConformance 2 }
-- Compliance requirement for fully compliant implementations.
bfdExtModuleFullCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for agents that provide full
support for the BFD-EXT-STD-MIB module. "
MODULE -- This module.
MANDATORY-GROUPS {
bfdSessionExtGroup,
bfdSessionExtPerfGroup
}
::= { bfdExtCompliances 1 }
bfdExtModuleReadOnlyCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance requirement for implementations that only
provide read-only support for BFD-EXT-STD-MIB. Such devices
can then be monitored but cannot be configured using
this MIB module."
MODULE -- This module.
MANDATORY-GROUPS {
bfdSessionExtGroup,
bfdSessionExtPerfGroup
}
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OBJECT bfdSessExtRole
MIN-ACCESS read-only
DESCRIPTION "Write access is not required."
OBJECT bfdSessExtMode
MIN-ACCESS read-only
DESCRIPTION "Write access is not required."
OBJECT bfdSessExtTmrNegotiate
MIN-ACCESS read-only
DESCRIPTION "Write access is not required."
OBJECT bfdSessExtMapType
MIN-ACCESS read-only
DESCRIPTION "Write access is not required."
OBJECT bfdSessExtMapPointer
MIN-ACCESS read-only
DESCRIPTION "Write access is not required."
::= { bfdExtCompliances 2 }
-- Units of conformance.
bfdSessionExtGroup OBJECT-GROUP
OBJECTS {
bfdSessExtRole,
bfdSessExtMode,
bfdSessExtTmrNegotiate,
bfdSessExtMapType,
bfdSessExtMapPointer
}
STATUS current
DESCRIPTION
"Collection of objects needed for BFD monitoring for
MPLS and MPLS-TP paths"
::= { bfdExtGroups 1 }
bfdSessionExtPerfGroup OBJECT-GROUP
OBJECTS {
bfdSessExtPerfMisDefCount,
bfdSessExtPerfLocDefCount,
bfdSessExtPerfRdiInCount,
bfdSessExtPerfRdiOutCount
}
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STATUS current
DESCRIPTION
"Collection of objects needed to monitor the
performance of BFD sessions on MPLS and MPLS-TP
paths"
::= { bfdExtGroups 2 }
END
7. Security Considerations
To be added in the next version of this document.
8. IANA Considerations
To be added in the next version of this document.
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.
[BFD] Katz, D. and D. Ward, "Bidirectional Forwarding
Detection (BFD)", RFC 5880, June 2010.
[BFD-1HOP] Katz, D. and D. Ward, "Bidirectional Forwarding
Detection (BFD) for IPv4 and IPv6 (Single Hop)",
RFC 5881, June 2010.
[BFD-MH] Katz, D. and D. Ward, "Bidirectional Forwarding
Detection (BFD) for Multihop Paths", RFC 5883,
June 2010.
[BFD-MPLS] Aggarwal, R. et.al., "Bidirectional Forwarding
Detection (BFD) for MPLS Label Switched Paths (LSPs)",
RFC 5884, June 2010
[MPLS-TP-CC-CV-RDI] Allan, D., G. Swallow, Drake, J.,
"Proactive Connectivity Verification, Continuity Check
and Remote Defect Indication for MPLS Transport
Profile", draft-ietf-mpls-tp-cc-cv-rdi-06.
[RFC2578] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Structure of Management Information Version 2 (SMIv2)",
STD 58, RFC 2578, April 1999.
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[RFC2579] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"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.
9.2 Informative References
[RFC3410] J. Case, R. Mundy, D. pertain, B.Stewart, "Introduction
and Applicability Statement for Internet Standard
Management Framework", RFC 3410, December 2002.
10. Acknowledgments
The authors would like to thank Lavanya Srivatsa for her valuable
comments.
11. Authors' Addresses
Sam Aldrin
Huawei Technologies
2330 Central Express Way,
Santa Clara, CA 95051, USA
Email: aldrin.ietf@gmail.com
Venkatesan Mahalingam
Aricent
India
Email: venkat.mahalingams@gmail.com
Mukund Mani
Aricent
India
Email: mukund.mani@gmail.com
Kannan KV Sampath
Aricent
India
Email: Kannan.Sampath@aricent.com
Thomas D. Nadeau
CA Technologies
273 Corporate Drive, Portsmouth, NH, USA
Email: thomas.nadeau@ca.com
Aldrin, et al. Expires April 28, 2012 [Page 17]
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