Network Working Group Z. Zhang
Internet-Draft Juniper Networks, Inc.
Intended status: Standards Track H. Tsunoda
Expires: November 27, 2017 Tohoku Institute of Technology
May 26, 2017
L2L3 VPN Multicast MIB
draft-ietf-bess-l2l3-vpn-mcast-mib-08
Abstract
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes two MIB modules which will be used by
other MIB modules for monitoring and/or configuring Layer 2 and Layer
3 Virtual Private Networks that support multicast.
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 27, 2017.
Copyright Notice
Copyright (c) 2017 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
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. The Internet-Standard Management Framework . . . . . . . . . 4
3. Summary of MIB Modules . . . . . . . . . . . . . . . . . . . 4
4. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1. L2L3-VPN-MCAST-TC-MIB Object Definitions . . . . . . . . 5
4.2. L2L3-VPN-MCAST-MIB Object Definitions . . . . . . . . . . 10
5. Security Considerations . . . . . . . . . . . . . . . . . . . 16
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.1. Normative References . . . . . . . . . . . . . . . . . . 17
7.2. Informative References . . . . . . . . . . . . . . . . . 19
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 20
1. Introduction
The procedures for supporting multicast in Border Gateway Protocol/
MultiProtocol Label Switching (BGP/MPLS) Layer 3 (L3) Virtual Private
Network (VPN) are specified in [RFC6513]. The procedures for
supporting multicast in Border Gateway Protocol/MultiProtocol Label
Switching Layer 2 (L2) Virtual Private Network are specified in
[RFC7117]. Throughout this document, we will use the term
"L2L3VPNMCast" to mean BGP/MPLS L2 and L3 VPN that support multicast.
This document describes textual conventions (TCs) and common managed
objects (MOs) which will be used by other Management Information Base
(MIB) modules for monitoring and/or configuring L2L3VPNMCast.
L2L3VPNMCast can be achieved by using various kinds of transport
mechanisms for forwarding a packet to all or a subset of Provider
Edge routers (PEs) across service provider networks. Such transport
mechanisms are referred to as provider tunnels (P-tunnels). The
signaling of P-tunnel choice is very similar for multicast in both L2
and L3 VPNs. Therefore, TCs and MOs defined in this document will be
used by other MIB modules for monitoring and/or configuring both L2
and L3 VPNs that support multicast.
The are two type of the signaling mechanisms of P-tunnel choice: BGP-
based and UDP-based [RFC6513]. BGP-based mechanisms for Virtual
Private LAN Service and Multicast VPN (MVPN) are described in
[RFC7117] and [RFC6513], respectively. In [RFC6513], a UDP-based
signaling mechanism is also specified.
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A BGP attribute that specifies information of a P-tunnel is called
Provider Multicast Service Interface (PMSI) tunnel attribute. The
PMSI tunnel attribute is advertised/received by PEs in BGP auto-
discovery (A-D) routes. [RFC6514] defines the format of a PMSI
tunnel attribute.
This document defines four TCs to represent
(a) the tunnel type of a P-tunnel,
(b) the identifier of a P-tunnel,
(c) the pointer to a row in some table pertaining to a P-tunnel, and
(d) the type of the pointer in (c) above,
respectively.
This document also describes common MOs that provide the information
in a PMSI tunnel attribute and corresponding tunnel information to
other MIB modules.
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].
1.1. Terminology
This document adopts the definitions, acronyms and mechanisms
described in [RFC6513] [RFC6514] [RFC7117] and other documents that
they refer to. Familiarity with Multicast, MPLS, Layer 3 VPN, MVPN
(Multicast VPN) concepts and/or mechanisms is assumed. Some terms
specifically related to this document are explained below.
The term "Multicast VPN (MVPN)" [RFC6513] refers to a BGP/MPLS Layer
3 (IP) VPN service that supports multicast.
"Provider Multicast Service Interface (PMSI)" [RFC6513] is a
conceptual interface instantiated by a P-tunnel, a transport
mechanism used to deliver multicast traffic. A PE uses it to send
customer multicast traffic to all or some PEs in the same VPN.
There are two kinds of PMSIs: "Inclusive PMSI (I-PMSI)" and
"Selective PMSI (S-PMSI)" [RFC6513]. An I-PMSI is a PMSI that
enables a PE attached to a particular MVPN to transmit a message to
all PEs in the same VPN. An S-PMSI is a PMSI that enables a PE
attached to a particular MVPN to transmit a message to some of the
PEs in the same VPN.
Throughout this document, we will use the term "PMSI" to refer both
"I-PMSI" and "S-PMSI."
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[RFC6513] describes the following tunnel setup techniques that can be
used to create the P-tunnels that instantiate the PMSIs.
o Protocol Independent Multicast tree
* Sparse Mode (PIM-SM) tree [RFC4601]
* Source Specific Multicast (PIM-SSM) tree [RFC4601]
* Bidirectional Protocol Independent Multicast (BIDIR-PIM) tree
[RFC5015]
o Label Distribution Protocol Extension for Multipoint Label
Switched Paths (mLDP) [RFC6388]
* Point-to-MultiPoint (mLDP P2MP)
* Point-to-MultiPoint (mLDP MP2MP)
o Resource Reservation Protocol - Traffic Engineering Point-to-
Multipoint (RSVP-TE P2MP) Label Switched Path [RFC4875]
o Ingress Replication through Unicast Tunnels [RFC6513]
A tunnel is identified by its Tunnel Identifier. The length of the
identifier will depend on the setup technique that is used to create
the tunnel.
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. Summary of MIB Modules
This document defines two MIB modules: L2L3-VPN-MCAST-TC-MIB and
L2L3-VPN-MCAST-MIB.
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o L2L3-VPN-MCAST-TC-MIB contains four Textual Conventions:
L2L3VpnMcastProviderTunnelType, L2L3VpnMcastProviderTunnelId,
L2L3VpnMcastProviderTunnelPointerType, and
L2L3VpnMcastProviderTunnelPointer. L2L3VpnMcastProviderTunnelType
provides an enumeration of the P-tunnel types.
L2L3VpnMcastProviderTunnelId represents an identifier of a
P-tunnel. L2L3VpnMcastProviderTunnelPointerType indicates a type
of pointer to the row pertaining to a table entry that represents
a P-tunnel. L2L3VpnMcastProviderTunnelPointer denotes a pointer
to the row pertaining to a table entry that represents a P-tunnel.
o L2L3-VPN-MCAST-MIB defines a table
l2L3VpnMcastPmsiTunnelAttributeTable. An entry in this table
corresponds to a PMSI Tunnel Attribute (PTA) advertised/received
by a PE router. Entries in this table will be used by other MIB
modules for monitoring and/or configuring L2L3VPNMCast. The table
index uniquely identifies a tunnel. It is composed of a set of
attributes which depend on the tunnel type. The table may also be
used in conjunction with other MIBs, such as MPLS Traffic
Engineering MIB (MPLS-TE-STD-MIB) [RFC3812], to obtain further
information of a tunnel by following the row pointer of the
corresponding tunnel's row in this table. It may also be used in
conjunction with Interfaces Group MIB (IF-MIB) [RFC2863] to obtain
further information of the interface corresponding to the tunnel
by following the row pointer of the corresponding tunnel's row in
this table.
4. Definitions
4.1. L2L3-VPN-MCAST-TC-MIB Object Definitions
L2L3-VPN-MCAST-TC-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, mib-2
FROM SNMPv2-SMI -- [RFC2578]
TEXTUAL-CONVENTION
FROM SNMPv2-TC; -- [RFC2579]
l2L3VpnMcastTCMIB MODULE-IDENTITY
LAST-UPDATED "201705261200Z" -- 26th May, 2017
ORGANIZATION "IETF BESS Working Group."
CONTACT-INFO
" Zhaohui Zhang
Juniper Networks, Inc.
10 Technology Park Drive
Westford, MA 01886
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USA
Email: zzhang@juniper.net
Hiroshi Tsunoda
Tohoku Institute of Technology
35-1, Yagiyama Kasumi-cho
Taihaku-ku, Sendai, 982-8577
Japan
Email: tsuno@m.ieice.org
Comments and discussion to bess@ietf.org
"
DESCRIPTION
"This MIB module specifies textual conventions for
Border Gateway Protocol/MultiProtocol Label
Switching Layer 2 and Layer 3 Virtual Private Network
that support multicast (L2L3VPNMCast).
Copyright (C) The Internet Society (2017).
"
-- Revision history.
REVISION "201705261200Z" -- 26th May, 2017
DESCRIPTION
"Initial version, published as RFC XXXX."
-- RFC Ed. replace XXXX with actual RFC number and remove this note
::= { mib-2 AAAA }
-- IANA Reg.: Please assign a value for "AAAA" under the
-- 'mib-2' subtree and record the assignment in the SMI
-- Numbers registry.
-- RFC Ed.: When the above assignment has been made, please
-- remove the above note
-- replace "AAAA" here with the assigned value and
-- remove this note.
-- Textual convention
L2L3VpnMcastProviderTunnelType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This textual convention enumerates values
representing the type of a provider tunnel (P-tunnel)
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used for L2L3VPNMCast.
These labeled numbers are aligned with the definition
of Tunnel types in Section 5 of [RFC6514].
"
REFERENCE
"RFC6514, Section 5"
SYNTAX INTEGER
{
noTunnelId (0), -- No tunnel information
rsvpP2mp (1), -- RSVP-TE P2MP LSP
ldpP2mp (2), -- mLDP P2MP LSP
pimSsm (3), -- PIM-SSM Tree
pimAsm (4), -- PIM-SM Tree
pimBidir (5), -- BIDIR-PIM Tree
ingressReplication (6), -- Ingress Replication
ldpMp2mp (7) -- mLDP MP2MP LSP
}
L2L3VpnMcastProviderTunnelId ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This textual convention represents the tunnel identifier
of a P-tunnel.
The size of the identifier depends on the address family
(IPv4 or IPv6) and the value of the corresponding
L2L3VpnMcastProviderTunnelType object.
The corresponding L2L3VpnMcastProviderTunnelType object
represents the type of the tunneling technology used
to establish the P-tunnel.
The size of the identifier for each tunneling technology
is summarized below.
L2L3VpnMcastProviderTunnelType Size (in octets)
(tunneling technology) IPv4 IPv6
--------------------------------------------------------
noTunnelId (No tunnel information) 0 0
rsvpP2mp (RSVP-TE P2MP LSP) 12 24
ldpP2mp (mLDP P2MP LSP) 17 29
pimSsm (PIM-SSM Tree) 8 32
pimAsm (PIM-SM Tree) 8 32
pimBidir (BIDIR-PIM Tree) 8 32
ingressReplication (Ingress Replication) 4 16
ldpMp2mp (mLDP MP2MP LSP) 17 29
A L2L3VpnMcastProviderTunnelType object of value
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noTunnelId(0) indicates that the corresponding
Provider Multicast Service Interface (PMSI) Tunnel
attribute does not have tunnel information.
The value of the corresponding L2L3VpnMcastProviderTunnelId
object will be a string of length zero.
When the L2L3VpnMcastProviderTunnelType object is of value
rsvpP2mp(1), the corresponding Tunnel Identifier is composed of
Extended Tunnel ID (4 octets in IPv4, 16 octets in IPv6),
Reserved (2 octets), Tunnel ID (2 octets), and
P2MP ID (4 octets).
The size of the corresponding L2L3VpnMcastProviderTunnelId
object will be 12 octets in IPv4 and 24 octets in IPv6.
When the L2L3VpnMcastProviderTunnelType object is of value
ldpP2mp(2), the corresponding Tunnel Identifier is P2MP
Forwarding Equivalence Class (FEC) Element [RFC6388].
The size of the corresponding L2L3VpnMcastProviderTunnelId
object will be 17 octets in IPv4 and 29 octets in IPv6
When the L2L3VpnMcastProviderTunnelType object is of value
pimSsm(3), PimAsm(4), or PimBidir(5), the corresponding
Tunnel Identifier is composed of the source IP address
and the group IP address.
The size of the corresponding L2L3VpnMcastProviderTunnelId
object will be 8 octets in IPv4 and 32 octets in IPv6.
When the L2L3VpnMcastProviderTunnelType object is of value
ingressReplication(6), the Tunnel Identifier is
the unicast tunnel endpoint IP address of the local PE.
The size of the corresponding L2L3VpnMcastProviderTunnelId
object is 4 octets in IPv4 and 16 octets in IPv6.
When the L2L3VpnMcastProviderTunnelType object is of value
ldpMp2mp(7), the Tunnel Identifier is MP2MP FEC Element
[RFC6388].
The size of the corresponding L2L3VpnMcastProviderTunnelId
object 17 octets in IPv4 and 29 octets in IPv6.
"
REFERENCE
"RFC6514, Section 5
RFC4875, Section 19.1
RFC6388, Section 2.2 and 3.2
"
SYNTAX OCTET STRING ( SIZE (0|4|8|12|16|17|24|29|32) )
L2L3VpnMcastProviderTunnelPointer ::= TEXTUAL-CONVENTION
STATUS current
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DESCRIPTION
"This textual convention represents a pointer to a row in
a table represented by the following object of type
L2L3VpnMcastProviderTunnelPointerType.
An L2L3VpnMcastProviderTunnelPointer value is always
interpreted within the context of an
L2L3VpnMcastProviderTunnelPointerType value.
Every usage of the L2L3VpnMcastProviderTunnelPointer
textual convention MUST specify the
L2L3VpnMcastProviderTunnelPointerType object which
provides the context.
Furthermore, MIB authors SHOULD define a separate
L2L3VpnMcastProviderTunnelPointerType object for each
L2L3VpnMcastProviderTunnelPointer object.
The L2L3VpnMcastProviderTunnelPointerType object which
defines the context must be registered immediately before
the object which uses the L2L3VpnMcastProviderTunnelPointer
textual convention.
"
SYNTAX OBJECT IDENTIFIER
L2L3VpnMcastProviderTunnelPointerType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This textual convention enumerates the
tables having the row that an L2L3VpnMcastProviderTunnelPointer
object points to.
The row pertains to the entry that represents a
P-tunnel used for L2L3VPNMCast.
The enumerated values have the following meanings:
null(0)
Default value. This indicates that the corresponding
L2L3VpnMcastProviderTunnelPointer object is not assigned.
pointerToMplsTunnelTable(1)
The corresponding L2L3VpnMcastProviderTunnelPointer object
points to a row in an mplsTunnelTable defined in [RFC3812].
pointerToTunnelIfTableForGRE(2)
The corresponding L2L3VpnMcastProviderTunnelPointer object
points to a row in a tunnelIfTable defined in [RFC4087] for
GRE tunnel.
"
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REFERENCE
"RFC3812, RFC4087"
SYNTAX INTEGER
{
null (0), -- Default value
pointerToMplsTunnelTable (1), -- Pointer to a row
-- in mplsTunnelTable
pointerToTunnelIfTableForGRE (2) -- Pointer to a row
-- in tunnelIfTable
-- for GRE tunnel
}
END
4.2. L2L3-VPN-MCAST-MIB Object Definitions
L2L3-VPN-MCAST-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, mib-2, zeroDotZero
FROM SNMPv2-SMI -- [RFC2578]
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF -- [RFC2580]
RowPointer
FROM SNMPv2-TC -- [RFC2579]
MplsLabel
FROM MPLS-TC-STD-MIB -- [RFC3811]
L2L3VpnMcastProviderTunnelType,
L2L3VpnMcastProviderTunnelId,
L2L3VpnMcastProviderTunnelPointerType,
L2L3VpnMcastProviderTunnelPointer
FROM L2L3-VPN-MCAST-TC-MIB;
l2L3VpnMcastMIB MODULE-IDENTITY
LAST-UPDATED "201705261200Z" -- 26th May, 2017
ORGANIZATION "IETF BESS Working Group."
CONTACT-INFO
" Zhaohui Zhang
Juniper Networks, Inc.
10 Technology Park Drive
Westford, MA 01886
USA
Email: zzhang@juniper.net
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Hiroshi Tsunoda
Tohoku Institute of Technology
35-1, Yagiyama Kasumi-cho
Taihaku-ku, Sendai, 982-8577
Japan
Email: tsuno@m.ieice.org
Comments and discussion to bess@ietf.org
"
DESCRIPTION
"This MIB module will be used by other MIB modules designed for
monitoring and/or configuring Border Gateway
Protocol/MultiProtocol Label Switching
Layer 2 and Layer 3 Virtual Private
Network that support multicast (L2L3VPNMCast).
Copyright (C) The Internet Society (2017).
"
-- Revision history.
REVISION "201705261200Z" -- 26th May, 2017
DESCRIPTION
"Initial version, published as RFC XXXX."
-- RFC Ed. replace XXXX with actual RFC number and remove this note
::= { mib-2 BBBB }
-- IANA Reg.: Please assign a value for "BBBB" under the
-- 'mib-2' subtree and record the assignment in the SMI
-- Numbers registry.
-- RFC Ed.: When the above assignment has been made, please
-- remove the above note
-- replace "BBBB" here with the assigned value and
-- remove this note.
-- Top level components of this MIB.
l2L3VpnMcastStates OBJECT IDENTIFIER
::= { l2L3VpnMcastMIB 1 }
l2L3VpnMcastConformance OBJECT IDENTIFIER
::= { l2L3VpnMcastMIB 2 }
-- tables, scalars, conformance information
-- Table of PMSI Tunnel Attributes
l2L3VpnMcastPmsiTunnelAttributeTable OBJECT-TYPE
SYNTAX SEQUENCE OF L2L3VpnMcastPmsiTunnelAttributeEntry
MAX-ACCESS not-accessible
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STATUS current
DESCRIPTION
"An entry in this table corresponds to a
(Provider Multicast Service Interface) PMSI Tunnel
attribute and is maintained by a PE router
that advertises and receives the attribute.
The entries will be referred to by other MIB modules
for monitoring and/or configuring L2L3VPNMCast.
"
REFERENCE
"RFC6514, Section 5"
::= { l2L3VpnMcastStates 1 }
l2L3VpnMcastPmsiTunnelAttributeEntry OBJECT-TYPE
SYNTAX L2L3VpnMcastPmsiTunnelAttributeEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A conceptual row corresponding to a PTA
that is advertised/received on this router.
"
REFERENCE
"RFC6514, Section 5"
INDEX {
l2L3VpnMcastPmsiTunnelAttributeFlags,
l2L3VpnMcastPmsiTunnelAttributeType,
l2L3VpnMcastPmsiTunnelAttributeLabel,
l2L3VpnMcastPmsiTunnelAttributeId
}
::= { l2L3VpnMcastPmsiTunnelAttributeTable 1 }
L2L3VpnMcastPmsiTunnelAttributeEntry ::=
SEQUENCE {
l2L3VpnMcastPmsiTunnelAttributeFlags
OCTET STRING,
l2L3VpnMcastPmsiTunnelAttributeType
L2L3VpnMcastProviderTunnelType,
l2L3VpnMcastPmsiTunnelAttributeLabel
MplsLabel,
l2L3VpnMcastPmsiTunnelAttributeId
L2L3VpnMcastProviderTunnelId,
l2L3VpnMcastPmsiTunnelPointerType
L2L3VpnMcastProviderTunnelPointerType,
l2L3VpnMcastPmsiTunnelPointer
L2L3VpnMcastProviderTunnelPointer,
l2L3VpnMcastPmsiTunnelIf
RowPointer
}
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l2L3VpnMcastPmsiTunnelAttributeFlags OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object represents the Flags field in the PMSI Tunnel
attribute. The Flags field has the following format.
0 1 2 3 4 5 6 7
+-+-+-+-+-+-+-+-+
| reserved |L|
+-+-+-+-+-+-+-+-+
L: Leaf Information Required
When BGP-based PMSI signaling is used, the value of
this object corresponds to the Flags field in
an advertised/received PMSI auto-discovery (A-D) route.
When UDP-based S-PMSI signaling is used, the value of
this object is zero.
"
REFERENCE
"RFC6514, Section 5"
::= { l2L3VpnMcastPmsiTunnelAttributeEntry 1 }
l2L3VpnMcastPmsiTunnelAttributeType OBJECT-TYPE
SYNTAX L2L3VpnMcastProviderTunnelType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Tunnel Type field that identifies
the type of the tunneling technology used to
establish the provider tunnel (P-tunnel), in a
PMSI Tunnel attribute.
When BGP-based PMSI signaling is used, the value of
this object corresponds to the Tunnel Type field in
an advertised/received PMSI auto-discovery (A-D) route.
When UDP-based S-PMSI signaling is used, the value of
this object will be one of pimAsm (3), pimSsm (4), or
pimBidir (5).
"
REFERENCE
"RFC6514, Section 5"
::= { l2L3VpnMcastPmsiTunnelAttributeEntry 2 }
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l2L3VpnMcastPmsiTunnelAttributeLabel OBJECT-TYPE
SYNTAX MplsLabel
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The MPLS Label field in a PMSI Tunnel attribute.
When BGP-based PMSI signaling is used, the value of
this object corresponds to the MPLS Label field in
an advertised/received PMSI A-D route.
When UDP-based S-PMSI signaling is used, the value of
this object is zero that indicates the absence of MPLS
Label.
"
REFERENCE
"RFC6514, Section 5"
::= { l2L3VpnMcastPmsiTunnelAttributeEntry 3 }
l2L3VpnMcastPmsiTunnelAttributeId OBJECT-TYPE
SYNTAX L2L3VpnMcastProviderTunnelId
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Tunnel Identifier field that uniquely
identifies a tunnel, in a PMSI Tunnel attribute.
The size of the identifier depends on the address family
(IPv4 or IPv6) and the value of the corresponding
l2L3VpnMcastPmsiTunnelAttributeType object i.e., the type of
the tunneling technology used to establish the provider
tunnel.
"
REFERENCE
"RFC6514, Section 5"
::= { l2L3VpnMcastPmsiTunnelAttributeEntry 4 }
l2L3VpnMcastPmsiTunnelPointerType OBJECT-TYPE
SYNTAX L2L3VpnMcastProviderTunnelPointerType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of l2L3VpnMcastPmsiTunnelPointer.
The tunnel identified by l2L3VpnMcastPmsiTunnelAttributeId
may be represented as an entry in some other table, e.g.,
mplsTunnelTable [RFC3812]. This object specifies
the type of the pointer to the row pertaining to the entry.
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If such an entry does not exist, the value of this object
MUST be null(0).
"
DEFVAL { null }
::= { l2L3VpnMcastPmsiTunnelAttributeEntry 5 }
l2L3VpnMcastPmsiTunnelPointer OBJECT-TYPE
SYNTAX L2L3VpnMcastProviderTunnelPointer
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The pointer to a table entry representing the tunnel
identified by l2L3VpnMcastPmsiTunnelAttributeId.
The type of this pointer is specified with
the corresponding instance of the
l2L3VpnMcastPmsiTunnelPointerType object.
If the value of the corresponding instance of the
l2L3VpnMcastPmsiTunnelPointerType is null(0),
the value of this object MUST be set to zeroDotZero.
"
DEFVAL { zeroDotZero }
::= { l2L3VpnMcastPmsiTunnelAttributeEntry 6 }
l2L3VpnMcastPmsiTunnelIf OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If the tunnel identified by l2L3VpnMcastPmsiTunnelAttributeId
has a corresponding entry in the ifXTable [RFC2863],
this object will point to the row pertaining to the entry
in the ifXTable. Otherwise, this object MUST be set to
zeroDotZero."
DEFVAL { zeroDotZero }
::= { l2L3VpnMcastPmsiTunnelAttributeEntry 7 }
-- Conformance Information
l2L3VpnMcastGroups OBJECT IDENTIFIER
::= { l2L3VpnMcastConformance 1 }
l2L3VpnMcastCompliances OBJECT IDENTIFIER
::= { l2L3VpnMcastConformance 2 }
-- Compliance Statements
l2L3VpnMcastCompliance MODULE-COMPLIANCE
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STATUS current
DESCRIPTION
"The compliance statement: no mandatory groups "
MODULE -- this module
GROUP l2L3VpnMcastOptionalGroup
DESCRIPTION
"This group is optional."
::= { l2L3VpnMcastCompliances 1 }
-- units of conformance
l2L3VpnMcastOptionalGroup OBJECT-GROUP
OBJECTS {
l2L3VpnMcastPmsiTunnelPointerType,
l2L3VpnMcastPmsiTunnelPointer,
l2L3VpnMcastPmsiTunnelIf
}
STATUS current
DESCRIPTION
"Support of these objects is not required."
::= { l2L3VpnMcastGroups 1 }
END
5. Security Considerations
There are no management objects defined in these MIB modules 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 these MIB modules (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. These are the tables and objects and their
sensitivity/vulnerability:
o the l2L3VpnMcastPmsiTunnelAttributeTable collectively show the
P-tunnel network topology and its performance characteristics.
For instance, l2L3VpnMcastPmsiTunnelAttributeId in this table will
contain the identifier that uniquely identifies a created
P-tunnel. This identifier may be composed of source and multicast
group IP addresses. l2L3VpnMcastPmsiTunnelPointer and
l2L3VpnMcastPmsiTunnelIf will point to the corresponding entries
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in other tables containing configuration and/or performance
information of a tunnel and an interface. If an Administrator
does not want to reveal this information, then these objects
should be considered sensitive/vulnerable.
SNMP versions prior to SNMPv3 did not include adequate security.
Even if the network itself is secure (for example by using IPsec),
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.
Implementations SHOULD provide the security features described by the
SNMPv3 framework (see [RFC3410]), and implementations claiming
compliance to the SNMPv3 standard MUST include full support for
authentication and privacy via the User-based Security Model (USM)
[RFC3414] with the AES cipher algorithm [RFC3826]. Implementations
MAY also provide support for the Transport Security Model (TSM)
[RFC5591] in combination with a secure transport such as SSH
[RFC5592] or TLS/DTLS [RFC6353].
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.
6. IANA Considerations
IANA is requested to root MIB objects in the MIB module contained in
this document under the mib-2 subtree.
7. References
7.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/
RFC2119, March 1997,
<http://www.rfc-editor.org/info/rfc2119>.
[RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "Structure of Management Information
Version 2 (SMIv2)", STD 58, RFC 2578, DOI 10.17487/
RFC2578, April 1999,
<http://www.rfc-editor.org/info/rfc2578>.
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[RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD
58, RFC 2579, DOI 10.17487/RFC2579, April 1999,
<http://www.rfc-editor.org/info/rfc2579>.
[RFC2580] McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "Conformance Statements for SMIv2",
STD 58, RFC 2580, DOI 10.17487/RFC2580, April 1999,
<http://www.rfc-editor.org/info/rfc2580>.
[RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group
MIB", RFC 2863, DOI 10.17487/RFC2863, June 2000,
<http://www.rfc-editor.org/info/rfc2863>.
[RFC3414] Blumenthal, U. and B. Wijnen, "User-based Security Model
(USM) for version 3 of the Simple Network Management
Protocol (SNMPv3)", STD 62, RFC 3414, DOI 10.17487/
RFC3414, December 2002,
<http://www.rfc-editor.org/info/rfc3414>.
[RFC3812] Srinivasan, C., Viswanathan, A., and T. Nadeau,
"Multiprotocol Label Switching (MPLS) Traffic Engineering
(TE) Management Information Base (MIB)", RFC 3812, DOI
10.17487/RFC3812, June 2004,
<http://www.rfc-editor.org/info/rfc3812>.
[RFC3826] Blumenthal, U., Maino, F., and K. McCloghrie, "The
Advanced Encryption Standard (AES) Cipher Algorithm in the
SNMP User-based Security Model", RFC 3826, DOI 10.17487/
RFC3826, June 2004,
<http://www.rfc-editor.org/info/rfc3826>.
[RFC4087] Thaler, D., "IP Tunnel MIB", RFC 4087, DOI 10.17487/
RFC4087, June 2005,
<http://www.rfc-editor.org/info/rfc4087>.
[RFC4875] Aggarwal, R., Ed., Papadimitriou, D., Ed., and S.
Yasukawa, Ed., "Extensions to Resource Reservation
Protocol - Traffic Engineering (RSVP-TE) for Point-to-
Multipoint TE Label Switched Paths (LSPs)", RFC 4875, DOI
10.17487/RFC4875, May 2007,
<http://www.rfc-editor.org/info/rfc4875>.
[RFC5591] Harrington, D. and W. Hardaker, "Transport Security Model
for the Simple Network Management Protocol (SNMP)", STD
78, RFC 5591, DOI 10.17487/RFC5591, June 2009,
<http://www.rfc-editor.org/info/rfc5591>.
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[RFC5592] Harrington, D., Salowey, J., and W. Hardaker, "Secure
Shell Transport Model for the Simple Network Management
Protocol (SNMP)", RFC 5592, DOI 10.17487/RFC5592, June
2009, <http://www.rfc-editor.org/info/rfc5592>.
[RFC6353] Hardaker, W., "Transport Layer Security (TLS) Transport
Model for the Simple Network Management Protocol (SNMP)",
STD 78, RFC 6353, DOI 10.17487/RFC6353, July 2011,
<http://www.rfc-editor.org/info/rfc6353>.
[RFC6388] Wijnands, IJ., Ed., Minei, I., Ed., Kompella, K., and B.
Thomas, "Label Distribution Protocol Extensions for Point-
to-Multipoint and Multipoint-to-Multipoint Label Switched
Paths", RFC 6388, DOI 10.17487/RFC6388, November 2011,
<http://www.rfc-editor.org/info/rfc6388>.
[RFC6513] Rosen, E., Ed. and R. Aggarwal, Ed., "Multicast in MPLS/
BGP IP VPNs", RFC 6513, DOI 10.17487/RFC6513, February
2012, <http://www.rfc-editor.org/info/rfc6513>.
[RFC6514] Aggarwal, R., Rosen, E., Morin, T., and Y. Rekhter, "BGP
Encodings and Procedures for Multicast in MPLS/BGP IP
VPNs", RFC 6514, DOI 10.17487/RFC6514, February 2012,
<http://www.rfc-editor.org/info/rfc6514>.
[RFC7117] Aggarwal, R., Ed., Kamite, Y., Fang, L., Rekhter, Y., and
C. Kodeboniya, "Multicast in Virtual Private LAN Service
(VPLS)", RFC 7117, DOI 10.17487/RFC7117, February 2014,
<http://www.rfc-editor.org/info/rfc7117>.
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, DOI 10.17487/
RFC3410, December 2002,
<http://www.rfc-editor.org/info/rfc3410>.
[RFC4601] Fenner, B., Handley, M., Holbrook, H., and I. Kouvelas,
"Protocol Independent Multicast - Sparse Mode (PIM-SM):
Protocol Specification (Revised)", RFC 4601, DOI 10.17487/
RFC4601, August 2006,
<http://www.rfc-editor.org/info/rfc4601>.
[RFC5015] Handley, M., Kouvelas, I., Speakman, T., and L. Vicisano,
"Bidirectional Protocol Independent Multicast (BIDIR-
PIM)", RFC 5015, DOI 10.17487/RFC5015, October 2007,
<http://www.rfc-editor.org/info/rfc5015>.
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Authors' Addresses
Zhaohui (Jeffrey) Zhang
Juniper Networks, Inc.
10 Technology Park Drive
Westford, MA 01886
USA
Email: zzhang@juniper.net
Hiroshi Tsunoda
Tohoku Institute of Technology
35-1, Yagiyama Kasumi-cho
Taihaku-ku, Sendai 982-8577
Japan
Phone: +81-22-305-3411
Email: tsuno@m.ieice.org
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