One document matched: draft-ietf-bfd-tc-mib-00.txt
Network Working Group T. Nadeau
Internet Draft BT
Intended status: Standards Track Z. Ali
Expires: March 6, 2010 Cisco Systems, Inc.
N. Akiya
Cisco Systems G.K.
September 7, 2010
Definitions of Textual Conventions (TCs) for
Bidirectional Forwarding Detection (BFD) Management
draft-ietf-bfd-tc-mib-00
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Copyright and License Notice
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Abstract
This draft defines a Management Information Base (MIB) module which
contains 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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. The Internet-Standard Management Framework . . . . . . . . . . 3
3. BFD Textual Conventions MIB Definitions . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 7
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1. Normative References . . . . . . . . . . . . . . . . . . 8
6.2. Informative References . . . . . . . . . . . . . . . . . 8
7. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 8
8 Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 9
9. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 9
1. Introduction
This document defines a MIB module which contains Textual Conventions
for Bidirectional Forwarding Detection (BFD) protocols. These
Textual Conventions should be imported by MIB modules which manage
BFD protocols.
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 [RFC2119].
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For an introduction to the concepts of BFD, see [BFD], [BFD-1HOP] and
[BFD-MH].
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].
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 STD 58, [RFC2580].
3. BFD Textual Conventions MIB Definitions
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 "201009071200Z" -- 7 September 2010 12:00:00 EST
ORGANIZATION "IETF Bidirectional Forwarding Detection
Working Group"
CONTACT-INFO
"Thomas D. Nadeau
BT
Email: tnadeau@lucidvision.com
Zafar Ali
Cisco Systems, Inc.
Email: zali@cisco.com
Nobo Akiya
Cisco Systems, G.K.
Email: nobo@cisco.com"
DESCRIPTION
"This MIB module defines TEXTUAL-CONVENTIONs for concepts
used in Bidirectional Forwarding Detection (BFD)
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protocols."
REVISION "201009071200Z" -- 7 September 2010 12:00:00 EST
DESCRIPTION
"Initial version. Published as RFC xxxx."
-- RFC Ed.: RFC-editor pls fill in xxxx
::= { mib-2 XXX }
-- RFC Ed.: assigned by IANA, 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)
BfdDiagTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A common BFD diagnostic code."
SYNTAX INTEGER {
noDiagnostic(0),
controlDetectionTimeExpired(1),
echoFunctionFailed(2),
neighborSignaledSessionDown(3),
forwardingPlaneReset(4),
pathDown(5),
concatenatedPathDown(6),
administrativelyDown(7),
reverseConcatenatedPathDown(8)
}
BfdSessTypeTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"BFD session type"
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REFERENCE
"RFC5880, RFC5881, RFC5883"
SYNTAX INTEGER {
singleHop(1),
multiHopTotallyArbitraryPaths(2),
multiHopOutOfBandSignaling(3),
multiHopUnidirectionalLinks(4),
multiPointHead(5),
multiPointTail(6)
}
BfdSessOperModeTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"BFD session operating mode"
REFERENCE
"RFC5880, Section 3.2"
SYNTAX INTEGER {
asyncModeWEchoFunction(1),
asynchModeWOEchoFunction(2),
demandModeWEchoFunction(3),
demandModeWOEchoFunction(4)
}
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.
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."
REFERENCE
"Port 3784 (RFC5881) and Port 4784 (RFC5883)"
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.
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2. potential future extension drafts."
REFERENCE
"Port 49152..65535 (RFC5881)"
SYNTAX Unsigned32 (0..65535)
BfdSessStateTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"BFD session state. State failing(5) is only applicable if
corresponding session is running in BFD version 0."
REFERENCE
"draft-katz-ward-bfd-02.txt, RFC5880"
SYNTAX INTEGER {
adminDown(1),
down(2),
init(3),
up(4),
failing(5)
}
BfdSessAuthenticationTypeTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"BFD authentication type"
REFERENCE
"RFC5880, Sections 4.2 - 4.4"
SYNTAX INTEGER {
noAuthentication(-1),
reserved(0),
simplePassword(1),
keyedMD5(2),
meticulousKeyedMD5(3),
keyedSHA1(4),
meticulousKeyedSHA1(5)
}
BfdSessionAuthenticationKeyTC ::= TEXTUAL-CONVENTION
DISPLAY-HINT "1x "
STATUS current
DESCRIPTION
"BFD authentication key type.
A BfdSessionAuthenticationKeyTC is always interpreted within
the context of an BfdSessAuthenticationTypeTC value. Every
usage of the BfdSessionAuthenticationTypeTC textual
convention is required to specify the the
BfdSessionAuthenticationKeyTC object that provides the
context. It is suggested that the
BfdSessionAuthentcationTypeTC object be logically registered
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before the object(s) that use the
BfdSessionAuthenticationKeyTC textual convention, if they
appear in the same logical row.
The value of a BfdSessionAuthenticationKeyTC must always be
consistent with the value of the associated
BfdSessionAuthencationTypeTC object. Attempts to set a
BfdSessionAuthenticationKeyTC object to a value inconsistent
with the associated BfdSessionAuthenticationTypeTC must fail
with an inconsistentValue error.
The following size constraints for a
BfdSessionAuthenticationKeyTC object are defined for the
associated BfdSessionAuthenticationTypeTC 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.
Meaningful security considerations can only be written in the MIB
modules that define management objects. Therefore, this document has
no impact on the security of the Internet.
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5. IANA Considerations
The MIB module in this document uses the following IANA-assigned
OBJECT IDENTIFIER values recorded in the SMI Numbers registry:
Descriptor OBJECT IDENTIFIER value
---------- -----------------------
bfdTCStdMib { mib-2 XXX }
[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.]
6. References
6.1. Normative References
[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.
[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.
6.2. Informative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction and Applicability Statements for Internet-
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Standard Management Framework", RFC 3410, December 2002.
[RFC3413] Levi, D., Meyer, P., and B. Stewart, "Simple Network
Management Protocol (SNMP) Applications", STD 62,
RFC 3413, December 2002.
Appendix A. Acknowledgments
We would like to thank David Ward and Jeffrey Haas for their comments
and suggestions.
Authors' Addresses
Thomas D. Nadeau
BT
BT Centre
81 Newgate Street
London EC1A 7AJ
United Kingdom
Email: tnadeau@lucidvision.com
Zafar Ali
Cisco Systems, Inc.
2000 Innovation Drive
Kanata, Ontario K2K 3E8
Canada
Email: zali@cisco.com
Nobo Akiya
Cisco Systems G.K.
Shinjuku Mitsui Building
2-1-1 Nishi-Shinjuku, Shinjuku-Ku
Tokyo 163-0409
Japan
Email: nobo@cisco.com
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