Softwire L. Cai
Internet-Draft ZTE
Intended status: Standards Track J. Qin
Expires: November 17, 2013 S. Tsuchiya, Ed.
Cisco Systems
May 16, 2013
Definitions of Managed Objects for 6rd
draft-cai-softwire-6rd-mib-05
Abstract
This document defines a portion of the Management Information Base
(MIB) for use with network management protocols. In particular, it
defines objects for managing 6rd devices.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on November 17, 2013.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. The Internet-Standard Management Framework . . . . . . . . . 2
3. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 2
4. Structure of the MIB Module . . . . . . . . . . . . . . . . . 3
4.1. sixRdTable . . . . . . . . . . . . . . . . . . . . . . . 3
4.2. sixRdBrIpv4AddressTable . . . . . . . . . . . . . . . . . 3
4.3. sixRdSecurityCeck . . . . . . . . . . . . . . . . . . . . 3
5. Relationship to Other MIB Modules . . . . . . . . . . . . . . 3
5.1. Relationship to the SNMPv2-MIB . . . . . . . . . . . . . 3
5.2. Relationship to the IP Tunnel MIB . . . . . . . . . . . . 3
5.3. Relationship to the Interfaces MIB . . . . . . . . . . . 4
5.4. Relationship to the IP MIB . . . . . . . . . . . . . . . 4
5.5. MIB modules required for IMPORTS . . . . . . . . . . . . 4
6. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 4
7. Security Considerations . . . . . . . . . . . . . . . . . . . 7
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 8
9.1. Normative References . . . . . . . . . . . . . . . . . . 8
9.2. Informative References . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 9
1. Introduction
This draft describes the Management Information Base (MIB) module for
6rd (IPv6 Rapid Deployment, [RFC5969]), which specifies an automatic
tunneling mechanism to deploy IPv6 to sites via a operator's IPv4
network.
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
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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. Structure of the MIB Module
The MIB Module specified herein provides one way to manage the 6rd
devices through SNMP.
4.1. sixRdTable
This table contains the configuration information for 6rd.
4.2. sixRdBrIpv4AddressTable
This table contains the BR IPv4 Address for configurations on given
6rd CE device.
4.3. sixRdSecurityCeck
This table contains counter of packets drop by 6rd receiving rule.
5. Relationship to Other MIB Modules
5.1. Relationship to the SNMPv2-MIB
The 'system' group in the SNMPv2-MIB [RFC3418] is defined as being
mandatory for all systems, and the objects apply to the entity as a
whole. The 'system' group provides identification of the management
entity and certain other system-wide data. The SAMPLE-MIB does not
duplicate those objects.
5.2. Relationship to the IP Tunnel MIB
The IP Tunnel MIB [RFC4087] contains objects common to all IP
tunnels, including 6rd. Additionally, tunnel encapsulation specific
MIB (like what is defined in this document) extend the IP tunnel MIB
to further describe encapsulation specific information, for example
(in case of 6rd): 6rd prefix, 6rd Prefix Length, IPv4Mask Length and
BR IPv4 Address.
The implementation of the IP Tunnel MIB is required for 6rd. The
tunnelIfEncapsMethod in the tunnelIfEntry should be set to
sixRd("xx"), and an entry in the 6rd MIB module will exist for every
tunnelIfEntry with this tunnelIfEncapsMethod. The
tunnelIfRemoteAddress must be set to 0.0.0.0.
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[Ed.Note:]This is similar to the situation of L2TP MIB [RFC3371]
case, since the IANA is requested to assign a value for sixRdMIB
under the "transmission" subtree. Also, a new IANAtunnelType (rather
than IANAifType) value is needed and should be recorded in the
IANAifType-MIB registry, refer to Section 8.
5.3. Relationship to the Interfaces MIB
Each logical interface (physical or virtual) has an ifEntry in the
Interfaces MIB[RFC2863]. Tunnels are handled by creating a logical
interface (ifEntry) for each tunnel.
5.4. Relationship to the IP MIB
IP MIB[RFC4293] provides traffic statics counter and status for 6rd
virtual interface.
5.5. MIB modules required for IMPORTS
This MIB module IMPORTs objects from [RFC4087], [RFC2580], [RFC2578],
[RFC2863], [RFC3411].
6. Definitions
SIXRD-MIB DEFINITIONS ::= BEGIN
IMPORTS
OBJECT-TYPE, transmission, Integer32
FROM SNMPv2-SMI
ifIndex
FROM IF-MIB
InetAddressIPv4, InetAddressPrefixLength, InetAddressIPv6
FROM INET-ADDRESS-MIB;
sixRdMIB MODULE-IDENTITY
LAST-UPDATED "201208120000Z" -- August 12, 2012
ORGANIZATION "IETF Softwire Working Group"
CONTACT-INFO
"Lei Cai
ZTE
No. 68 Zijinhua Rd.,
Nanjing, 210012
China
Email: cai.lei3@zte.com.cn
Jacni Qin
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Cisco Systems
Shanghai,
China
Email: jacni@jacni.com
Shishio Tsuchiya
Cisco Systems
Midtown Tower, 9-7-1, Akasaka
Minato-Ku, Tokyo 107-6227
Japan
Email: shtsuchi@cisco.com"
DESCRIPTION
"The MIB module defines managed objects for 6rd."
:: = { transmission XX } ---xx to be replaced
sixRdDevice OBJECT-TYPE
SYNTAX Integer32 (0..1)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"A value of 1 indicates the device is a 6rd BR,
or 0 indicates the device is a 6rd CE."
::= { sixRdMIB 1 }
sixRdTable OBJECT-TYPE
SYNTAX SEQUENCE OF SixRdEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The table contains the configuration information
of 6rd on a particular tunnel."
::= { sixRdMIB 2 }
sixRdEntry OBJECT-TYPE
SYNTAX SixRdEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry containing the configuration
information of 6rd on a particular tunnel."
INDEX {ifIndex}
::= { sixRdTable 1 }
SixRdEntry ::= SEQUENCE {
sixRdPrefix InetAddressIPv6,
sixRdPrefixLen InetAddressPrefixLength,
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sixRdIpv4MaskLen Integer32
}
sixRdPrefix OBJECT-TYPE
SYNTAX InetAddressIPv6
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The 6rd prefix of this 6rd domain."
::= { sixRdEntry 1 }
sixRdPrefixLen OBJECT-TYPE
SYNTAX InetAddressPrefixLength
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The length of 6rd prefix."
::= { sixRdEntry 2 }
sixRdIpv4MaskLen OBJECT-TYPE
SYNTAX Integer32 (0..32)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The number of high-order bits that are
identical across all CE IPv4 addresses within
this 6rd domain."
::= { sixRdEntry 3 }
sixRdBrIpv4AddressTable OBJECT-TYPE
SYNTAX SEQUENCE OF SixRdBrIpv4AddressEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The table contains the BR IPv4 Address of given
6rd domain if the value of 6rdDevice is 0 (i.e.,
6rd CE), or should be omitted if the value of
6rdDevice is 1 (i.e., 6rd BR)."
::= { sixRdMIB 3 }
sixRdBrIpv4AddressEntry OBJECT-TYPE
SYNTAX SixRdBrIpv4AddressEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry containing the BR IPv4 Address of given
6rd domain."
INDEX {ifIndex,
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sixRdBrIpv4Address
}
::= { sixRdBrIpv4AddressTable 1 }
SixRdBrIpv4AddressEntry ::= SEQUENCE {
sixRdBrIpv4Address InetAddressIPv4
}
sixRdBrIpv4Address OBJECT-TYPE
SYNTAX InetAddressIPv4
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The BR IPv4 Address of this 6rd domain."
::= { sixRdBrIpv4AddressEntry 1 }
sixRdSecurityCeck OBJECT-TYPE
SYNTAX SEQUENCE OF sixRdSecurityCeckInvalidPackets
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains counter of packets drop by 6rd
receiving rule."
::= { sixRdMIB 4 }
sixRdSecurityCeckInvalidPackets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"6rd BR/CE MUST validate the embedded IPv4 source
address of the encapsulated IPv6 packet with the IPv4
source address it is encapsulated by according to the
configured parameters of the 6rd domain. If the two
source addresses do not match, the packet MUST be dropped
and a counter incremented. This counter indicates the total
number of octets dropped packets by the receiving rules."
INDEX {ifIndex}
::= { sixRdSecurityCeckInvalidPackets 1 }
END
7. Security Considerations
This document does not introduce any new security concern in addition
to what is discussed in Section 6 of [RFC4087].
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8. IANA Considerations
The MIB module in this document uses the following IANA-assigned
OBJECT IDENTIFIER values recorded in the SMI Numbers registry, and
the following IANA-assigned tunnelType values recorded in the
IANAifType-MIB registry:
Descriptor OBJECT IDENTIFIER value
---------- -----------------------
sixRdMIB { transmission XXX }
IANAtunnelType ::= TEXTUAL-CONVENTION
SYNTAX INTEGER {
sixRd ("XX") -- 6rd encapsulation
}
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.
[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.
[RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group
MIB", RFC 2863, June 2000.
[RFC3371] Caves, E., Calhoun, P., and R. Wheeler, "Layer Two
Tunneling Protocol "L2TP" Management Information Base",
RFC 3371, August 2002.
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[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction and Applicability Statements for Internet-
Standard Management Framework", RFC 3410, December 2002.
[RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An
Architecture for Describing Simple Network Management
Protocol (SNMP) Management Frameworks", STD 62, RFC 3411,
December 2002.
[RFC3418] Presuhn, R., "Management Information Base (MIB) for the
Simple Network Management Protocol (SNMP)", STD 62, RFC
3418, December 2002.
[RFC4087] Thaler, D., "IP Tunnel MIB", RFC 4087, June 2005.
[RFC4293] Routhier, S., "Management Information Base for the
Internet Protocol (IP)", RFC 4293, April 2006.
[RFC5969] Townsley, W. and O. Troan, "IPv6 Rapid Deployment on IPv4
Infrastructures (6rd) -- Protocol Specification", RFC
5969, August 2010.
9.2. Informative References
[RFC4181] Heard, C., "Guidelines for Authors and Reviewers of MIB
Documents", BCP 111, RFC 4181, September 2005.
Authors' Addresses
Lei Cai
ZTE
No. 68 Zijinhua Rd.,
Nanjing 210012
China
Phone: +86 25 5287 2205
Email: cai.lei3@zte.com.cn
Jacni Qin
Cisco Systems
Shanghai
China
Phone: +86 1891 836 3666
Email: jacni@jacni.com
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Shishio Tsuchiya (editor)
Cisco Systems
Midtown Tower, 9-7-1, Akasaka
Minato-Ku, Tokyo 107-6227
Japan
Phone: +81 3 6434 6543
Email: shtsuchi@cisco.com
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