Internet DRAFT - draft-ietf-bfd-tc-mib
draft-ietf-bfd-tc-mib
Network Working Group T. Nadeau
Internet-Draft Brocade
Intended status: Standards Track Z. Ali
Expires: November 15, 2014 N. Akiya
Cisco Systems
May 14, 2014
Definitions of Textual Conventions (TCs) for
Bidirectional Forwarding Detection (BFD) Management
draft-ietf-bfd-tc-mib-08
Abstract
This draft defines two Management Information Base (MIB) modules that
contain Textual Conventions to represent commonly used Bidirectional
Forwarding Detection (BFD) management information. The intent is
that these TEXTUAL CONVENTIONS (TCs) will be imported and used in BFD
related MIB modules that would otherwise define their own
representations.
Requirements Language
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 BCP 14, RFC 2119
[RFC2119].
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 November 15, 2014.
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Copyright Notice
Copyright (c) 2014 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 . . . . . . . . . . . . . . . . . . . . . . . . 2
2. The Internet-Standard Management Framework . . . . . . . . . 2
3. BFD Textual Conventions MIB Definitions . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 9
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.1. Normative References . . . . . . . . . . . . . . . . . . 10
7.2. Informative References . . . . . . . . . . . . . . . . . 11
1. Introduction
This document defines two MIB modules that contain Textual
Conventions for Bidirectional Forwarding Detection (BFD) protocols.
These Textual Conventions should be imported by MIB modules which
manage BFD protocols.
Note that names of Textual Conventions defined in this document are
prefixed with either "Bfd" or "IANA" to make it obvious to readers
that some are specific to BFD modules, while others are IANA
maintained.
For an introduction to the concepts of BFD, see [RFC5880], [RFC5881],
[RFC5883], [RFC6428] and [RFC7130].
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].
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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. BFD Textual Conventions MIB Definitions
This MIB module makes references to the following documents:
[RFC2578], [RFC2579], [RFC5880], [RFC5881], [RFC5883], [RFC6428] and
[RFC7130].
BFD-TC-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, mib-2, Unsigned32
FROM SNMPv2-SMI -- [RFC2578]
TEXTUAL-CONVENTION
FROM SNMPv2-TC; -- [RFC2579]
bfdTCStdMib MODULE-IDENTITY
LAST-UPDATED
"201404131200Z" -- 13 April 2014 12:00:00 EST
ORGANIZATION "IETF Bidirectional Forwarding Detection
Working Group"
CONTACT-INFO
"Thomas D. Nadeau
Brocade
Email: tnadeau@lucidvision.com
Zafar Ali
Cisco Systems, Inc.
Email: zali@cisco.com
Nobo Akiya
Cisco Systems, Inc.
Email: nobo@cisco.com
Comments about this document should be emailed directly
to the BFD working group mailing list at
rtg-bfd@ietf.org"
DESCRIPTION
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"Copyright (C) The IETF Trust (2014). The initial version
of this MIB module was published in RFC xxxx. For full legal
notices see the RFC itself. Supplementary information
may be available on:
http://www.ietf.org/copyrights/ianamib.html"
-- RFC Ed.: RFC-editor pls fill in xxxx
REVISION "201404131200Z" -- 13 April 2014 12:00:00 EST
DESCRIPTION
"Initial version. Published as RFC xxxx."
-- RFC Ed.: RFC-editor pls fill in xxxx
::= { mib-2 XXX }
-- RFC Ed.: RFC-editor pls fill in XXX, see section 5 for details
BfdSessIndexTC ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"An index used to uniquely identify BFD sessions."
SYNTAX Unsigned32 (1..4294967295)
BfdIntervalTC ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"The BFD interval in microseconds."
SYNTAX Unsigned32 (0..4294967295)
BfdMultiplierTC ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"The BFD failure detection multiplier."
SYNTAX Unsigned32 (1..255)
BfdCtrlDestPortNumberTC ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"UDP destination port number of BFD control packets.
3784 represents single hop BFD session.
4784 represents multi hop BFD session.
6784 represents BFD on LAG session.
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However, syntax is left open to wider range of values
purposely for two reasons:
1. Implementation uses non-compliant port number for
valid proprietary reason.
2. Potential future extension drafts.
The value of 0 is a special, reserved value used
to indicate special conditions and should not be considered
a valid port number."
REFERENCE
"Use of port 3784 from Katz, D. and D. Ward,
Bidirectional Forwarding Detection (BFD) for
IPv4 and IPv6 (Single Hop), RFC 5881, June 2010.
Use of port 4784 from Katz, D. and D. Ward,
Bidirectional Forwarding Detection (BFD) for
Multihop Paths, RFC 5883, June 2010.
Use of port 6784 from Bhatia, M., Chen, M., Boutros, S.,
Binderberger, M., and J. Haas, Bidirectional Forwarding
Detection (BFD) on Link Aggregation Group (LAG)
Interfaces, RFC 7130, February 2014."
SYNTAX Unsigned32 (0..65535)
BfdCtrlSourcePortNumberTC ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"UDP source port number of BFD control packets.
However, syntax is left open to wider range of values
purposely for two reasons:
1. Implementation uses non-compliant port number for
valid proprietary reason.
2. Potential future extension drafts.
The value of 0 is a special, reserved value used
to indicate special conditions and should not be considered
a valid port number."
REFERENCE
"Port 49152..65535 from RFC5881"
SYNTAX Unsigned32 (0..65535)
END
IANA-BFD-TC-STD-MIB DEFINITIONS ::= BEGIN
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IMPORTS
MODULE-IDENTITY, mib-2
FROM SNMPv2-SMI -- [RFC2578]
TEXTUAL-CONVENTION
FROM SNMPv2-TC; -- [RFC2579]
ianaBfdTCStdMib MODULE-IDENTITY
LAST-UPDATED
"201404131200Z" -- 13 April 2014 12:00:00 EST
ORGANIZATION
"IANA"
CONTACT-INFO
"Internet Assigned Numbers Authority
Postal: 4676 Admiralty Way, Suite 330
Marina del Rey, CA 90292
Tel: +1 310 823 9358
E-Mail: iana@iana.org"
DESCRIPTION
"Copyright (C) The IETF Trust (2014). The initial version
of this MIB module was published in RFC xxxx. For full legal
notices see the RFC itself. Supplementary information
may be available on:
http://www.ietf.org/copyrights/ianamib.html"
-- RFC Ed.: RFC-editor pls fill in xxxx
REVISION
"201404131200Z" -- 13 April 2014 12:00:00 EST
DESCRIPTION
"Initial version. Published as RFC xxxx."
-- RFC Ed.: RFC-editor pls fill in xxxx
::= { mib-2 YYY }
-- RFC Ed.: RFC-editor pls fill in YYY, see section 5 for details
IANAbfdDiagTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A common BFD diagnostic code."
REFERENCE
"Katz, D. and D. Ward, Bidirectional Forwarding
Detection (BFD), RFC 5880, June 2010.
Allan, D., Swallow, G., and Drake, J., Proactive Connectivity
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Verification, Continuity Check, and Remote Defect
Indication for the MPLS Transport Profile, RFC 6428,
November 2011."
SYNTAX INTEGER {
noDiagnostic(0),
controlDetectionTimeExpired(1),
echoFunctionFailed(2),
neighborSignaledSessionDown(3),
forwardingPlaneReset(4),
pathDown(5),
concatenatedPathDown(6),
administrativelyDown(7),
reverseConcatenatedPathDown(8),
misConnectivityDefect(9)
}
IANAbfdSessTypeTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"BFD session type"
REFERENCE
"Katz, D. and D. Ward, Bidirectional Forwarding
Detection (BFD), RFC 5880, June 2010.
Katz, D. and D. Ward, Bidirectional Forwarding
Detection (BFD) for IPv4 and IPv6 (Single Hop),
RFC 5881, June 2010.
Katz, D. and D. Ward, Bidirectional Forwarding
Detection (BFD) for Multihop Paths, RFC 5883,
June 2010."
SYNTAX INTEGER {
singleHop(1),
multiHopTotallyArbitraryPaths(2),
multiHopOutOfBandSignaling(3),
multiHopUnidirectionalLinks(4)
}
IANAbfdSessOperModeTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"BFD session operating mode"
REFERENCE
"Katz, D. and D. Ward, Bidirectional Forwarding
Detection (BFD), RFC 5880, June 2010."
SYNTAX INTEGER {
asyncModeWEchoFunction(1),
asynchModeWOEchoFunction(2),
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demandModeWEchoFunction(3),
demandModeWOEchoFunction(4)
}
IANAbfdSessStateTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"BFD session state. State failing(5) is only applicable if
corresponding session is running in BFD version 0."
REFERENCE
"RFC 5880 - Bidirectional Forwarding Detection (BFD), Katz,
D., Ward, D., June 2010."
SYNTAX INTEGER {
adminDown(1),
down(2),
init(3),
up(4),
failing(5)
}
IANAbfdSessAuthenticationTypeTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"BFD authentication type"
REFERENCE
"Sections 4.2 - 4.4 from Katz, D. and D. Ward,
Bidirectional Forwarding Detection (BFD),
RFC 5880, June 2010."
SYNTAX INTEGER {
noAuthentication(-1),
reserved(0),
simplePassword(1),
keyedMD5(2),
meticulousKeyedMD5(3),
keyedSHA1(4),
meticulousKeyedSHA1(5)
}
IANAbfdSessAuthenticationKeyTC ::= TEXTUAL-CONVENTION
DISPLAY-HINT "1x "
STATUS current
DESCRIPTION
"BFD authentication key type.
An IANAbfdSessAuthenticationKeyTC is always interpreted
within the context of an IANAbfdSessAuthenticationTypeTC
value. Every usage of the IANAbfdSessAuthenticationTypeTC
textual convention is required to specify the
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IANAbfdSessAuthenticationKeyTC object that provides the
context. It is suggested that the
IANAbfdSessAuthenticationKeyTC object be logically registered
before the object(s) that use the
IANAbfdSessAuthenticationKeyTC textual convention, if they
appear in the same logical row.
The value of a IANAbfdSessAuthenticationKeyTC must
always be consistent with the value of the associated
IANAbfdSessAuthenticationTypeTC object. Attempts to set a
IANAbfdSessAuthenticationKeyTC object to a value inconsistent
with the associated IANAbfdSessAuthenticationTypeTC must fail
with an inconsistentValue error.
The following size constraints for a
IANAbfdSessAuthenticationKeyTC object are defined for the
associated IANAbfdSessAuthenticationTypeTC values show below:
noAuthentication(-1): SIZE(0)
reserved(0): SIZE(0)
simplePassword(1): SIZE(1..16)
keyedMD5(2): SIZE(16)
meticulousKeyedMD5(3): SIZE(16)
keyedSHA1(4): SIZE(20)
meticulousKeyedSHA1(5): SIZE(20)
When this textual convention is used as the syntax of an
index object, there may be issues with the limit of 128
sub-identifiers specified in SMIv2, STD 58. In this case,
the object definition MUST include a 'SIZE' clause to limit
the number of potential instance sub-identifiers; otherwise
the applicable constraints MUST be stated in the appropriate
conceptual row DESCRIPTION clauses, or in the surrounding
documentation if there is no single DESCRIPTION clause that
is appropriate."
REFERENCE
"RFC5880, Sections 4.2 - 4.4"
SYNTAX OCTET STRING(SIZE(0..252))
END
4. Security Considerations
This module does not define any management objects. Instead, it
defines a set of textual conventions which may be used by other BFD
MIB modules to define management objects.
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Meaningful security considerations can only be written in the MIB
modules that define management objects. Therefore, this document
does not introduce any additional security considerations.
5. IANA Considerations
This document provides the base definition of the IANA-BFD-TC-STD-MIB
module. This MIB module is under the direct control of IANA. See
Section 3 for the initial contents. Please see the most updated
version of this MIB at <http://www.iana.org/assignments/ianabfdtcstd-
mib>. [RFC-Editor's Note (to be removed prior to publication): the
IANA is requested to create page pointed to by URL.] Assignments of
IANA-BFD-TC-STD-MIB are via IETF Review [RFC5226].
This MIB makes reference to the following documents: [RFC2578],
[RFC2579], [RFC5880], [RFC5881] and [RFC5883], [RFC6428] and
[RFC7130].
IANA assigned an OID to the BFD-TC-STD-MIB module specified in this
document as { mib-2 XXX }. [RFC-Editor's Note (to be removed prior to
publication): the IANA is requested to assign a value for "XXX" 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 "XXX" (here and in the MIB module) with the assigned value
and to remove this note.]
IANA assigned an OID to the IANA-BFD-TC-STD-MIB module specified in
this document as { mib-2 YYY }. [RFC-Editor's Note (to be removed
prior to publication): the IANA is requested to assign a value for
"YYY" 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 "YYY" (here and in the MIB module) with
the assigned value and to remove this note.]
6. Acknowledgments
Authors would like to thank Adrian Farrel and Jeffrey Haas for
performing thorough reviews and providing number of suggestions.
Authors would also like to thank David Ward and Christer Holmberg for
his comments and suggestions.
7. References
7.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
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[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.
[RFC5880] Katz, D. and D. Ward, "Bidirectional Forwarding Detection
(BFD)", RFC 5880, June 2010.
[RFC5881] Katz, D. and D. Ward, "Bidirectional Forwarding Detection
(BFD) for IPv4 and IPv6 (Single Hop)", RFC 5881, June
2010.
[RFC5883] Katz, D. and D. Ward, "Bidirectional Forwarding Detection
(BFD) for Multihop Paths", RFC 5883, June 2010.
[RFC6428] Allan, D., Swallow Ed. , G., and J. Drake Ed. , "Proactive
Connectivity Verification, Continuity Check, and Remote
Defect Indication for the MPLS Transport Profile", RFC
6428, November 2011.
[RFC7130] Bhatia, M., Chen, M., Boutros, S., Binderberger, M., and
J. Haas, "Bidirectional Forwarding Detection (BFD) on Link
Aggregation Group (LAG) Interfaces", RFC 7130, February
2014.
7.2. 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.
[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226,
May 2008.
Authors' Addresses
Thomas D. Nadeau
Brocade
EMail: tnadeau@lucidvision.com
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Zafar Ali
Cisco Systems
EMail: zali@cisco.com
Nobo Akiya
Cisco Systems
EMail: nobo@cisco.com
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