RFC7453
Internet Engineering Task Force (IETF) M. Venkatesan Request for Comments: 7453 Dell Inc. Category: Standards Track K. Sampath ISSN: 2070-1721 Redeem
S. Aldrin
Huawei Technologies
T. Nadeau
Brocade
February 2015
MPLS Transport Profile (MPLS-TP) Traffic Engineering (TE)
Management Information Base (MIB)
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 additional managed objects and textual conventions for tunnels, identifiers, and Label Switching Routers to support Multiprotocol Label Switching (MPLS) MIB modules for transport networks.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7453.
Copyright Notice
Copyright (c) 2015 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.
9.1. Example of MPLS-TP Static Co-routed Bidirectional
9.2. Example of MPLS-TP Static Associated Bidirectional
9.3. Example of MPLS-TP Signaled Co-routed
Contents
- 1 Introduction
- 2 The Internet-Standard Management Framework
- 3 Overview
- 4 Motivations
- 5 Feature List
- 6 Outline
- 7 MIB Modules' Interdependencies
- 8 Dependencies between MIB Module Tables
- 9 Example of MPLS-TP Tunnel Setup
- 9.1 Example of MPLS-TP Static Co-routed Bidirectional Tunnel Setup
- 9.2 Example of MPLS-TP Static Associated Bidirectional Tunnel Setup
- 9.2.1 Forward-Direction mplsTunnelEntry
- 9.2.2 Forward-Direction mplsTunnelExtEntry
- 9.2.3 Forward-Direction mplsOutSegmentTable
- 9.2.4 Forward-Direction mplsXCEntry
- 9.2.5 Forward-Direction mplsXCExtEntry
- 9.2.6 Reverse-Direction mplsTunnelEntry
- 9.2.7 Reverse-Direction mplsTunnelExtEntry
- 9.2.8 Reverse-Direction mplsInSegmentEntry
- 9.2.9 Reverse-Direction mplsXCEntry
- 9.3 Example of MPLS-TP Signaled Co-routed Bidirectional Tunnel Setup
Introduction
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 additional textual conventions and managed objects for tunnels, identifiers, and Label Switching Routers to support Multiprotocol Label Switching (MPLS) MIB modules for transport networks. MIB modules defined in this document extend the existing MPLS MIB objects in such a way that they support the MPLS Transport Profile (MPLS-TP) but also other MPLS networks. Hence, "MPLS-TP" is not included in the MIB module names.
As described in the MPLS Traffic Engineering (TE) MIB definition RFC3812, MPLS traffic engineering is concerned with the creation and management of MPLS tunnels. This term is a shorthand for a combination of one or more LSPs linking an ingress and an egress LSR. Several types of point-to-point MPLS tunnels may be constructed between a pair of LSRs A and B:
- Unidirectional with a single LSP (say, from A to B).
- Associated bidirectional consisting of two separately routed
LSPs, one linking A to B and the other linking B to A.
Together, the pair provides a single logical bidirectional
transport path.
- Co-routed bidirectional consisting of an associated
bidirectional tunnel but with the second LSP from B to A
following the reverse of the path of the LSP from A to B, in
terms of both nodes and links.
Tunnels may be either statically configured by management action or dynamically created using an LSP management protocol.
The existing MPLS TE MIB RFC3812 and the GMPLS TE MIB RFC4802 address only a subset of the combinations of statically and dynamically configured tunnel types, catering to statically configured unidirectional tunnels together with dynamically configured unidirectional and co-routed bidirectional tunnels. They are also restricted to two endpoint LSRs identified by IP addresses.
The MPLS-TP TE MIB defined in this document extends the MIB modules defined in RFC3812 to cover all six combinations (that is, adding support for statically configured associated and co-routed bidirectional plus dynamically configured associated bidirectional tunnels). It also extends support to endpoints that have identifiers other than IP addresses.
This support is provided by a suite of four MIB modules that are to be used in conjunction with the MIB modules defined in RFC3812 and the companion document RFC3813 for MPLS-TP tunnel management.
At the time of writing, SNMP SET is no longer recommended as a way to configure MPLS networks as described in RFC3812. However, since the MIB modules specified in this document extend and are intended to work in parallel with the MIB modules for MPLS specified in RFC3812, certain objects defined here are specified with MAX-ACCESS of read-write or read-create so that specifications of the base tables in RFC3812 and the extensions in this document are consistent. Although the examples described in Section 9 specify means to configure MPLS-TP Tunnels in a similar way to the examples in RFC3812, this should be seen as indicating how the MIB values would be returned if the specified circumstances were configured by alternative means.
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.
Overview
Conventions Used in This Document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC2119.
Terminology
This document uses terminology from the "Multiprotocol Label Switching Architecture" RFC3031, "Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB)" RFC3812, "Multiprotocol Label Switching (MPLS) Label Switching Router (LSR) Management Information Base (MIB)" RFC3813, and"MPLS Transport Profile (MPLS-TP) Identifiers" RFC6370.
Acronyms
CC: Country Code ICC: ITU Carrier Code LSP: Label Switched Path LSR: Label Switching Router MPLS-TP: MPLS Transport Profile TE: Traffic Engineering TP: Transport Profile
Motivations
"Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB)" RFC3812 provides support for Traffic Engineering tunnels. In MPLS, the actual transport of packets is provided by Label Switched Paths (LSPs). A transport service may be composed of multiple LSPs. In order to clearly identify the MPLS-TP service, as defined in RFC6370, we use the term "MPLS-TP Tunnel" or simply "tunnel". However, with MPLS-TP, the characteristics of the tunnels were enhanced. For example, MPLS-TP Tunnels are bidirectional in nature and could be used with non-IP identifiers for the tunnel endpoints. As the existing MPLS-TE-STD-MIB and GMPLS-TE-STD-MIB were defined mainly to support unidirectional tunnels and signaled co-routed bidirectional tunnel definitions, respectively, these existing MIB modules are not sufficient to capture all the characteristics of the tunnels. Hence, enhancing the MIB modules to support MPLS-TP Tunnels is required. As most of the attributes of MPLS Traffic Engineering tunnels are also applicable to MPLS-TP Tunnels, it is optimal to reuse and extend the existing MIB module definition instead of defining a new MIB module.
This document defines four additional MIB modules, namely, MPLS-TE-EXT-STD-MIB, MPLS-TC-EXT-STD-MIB, MPLS-ID-STD-MIB, and MPLS-LSR-EXT-STD-MIB. As these additional MIB modules are required for MPLS-TP functionality, these are all defined in this document, instead of being documented separately.
Feature List
The MIBs in this document satisfy the following requirements and constraints:
The MIB modules, taken together, support statically configured and dynamically signaled point-to-point, co-routed bidirectional and associated bidirectional tunnels.
- The MPLS tunnels need not be interfaces, but it is possible to
configure an MPLS-TP Tunnel as an interface. The same ifType
150, as defined in Section 8 of RFC3812, will be used for
MPLS-TP Tunnels as well.
- The mplsTunnelTable RFC3812 is also to be used for MPLS-TP Tunnels.
- New MPLS-TP-specific textual conventions and identifiers are
required.
- The mplsTunnelTable is sparsely extended to support objects
specific to MPLS-TP Tunnels.
- A node configuration table (mplsTunnelExtNodeConfigTable), as
detailed in Section 6.2.1, below, is used to translate the
Global_ID::Node_ID or ICC_Operator_ID::Node_ID to the local
identifier in order to index the mplsTunnelTable.
- The mplsXCTable is sparsely extended to support objects specific
to MPLS-TP XC (Cross Connect).
- The MIB module supports persistent, as well as non-persistent,
tunnels.
Outline
Traffic Engineering support for the MPLS-TP Tunnels requires the setup of the co-routed or associated bidirectional tunnel. The tables and MIB modules that are mentioned in the below subsections support the functionality described in RFC5654 and RFC6370. These tables support both IP-compatible and ICC-based tunnel configurations.
Figure 1, below, depicts how the table references are followed in this MIB.
Tunnel1-->XC1<--------------
^ ^ | | |
| | | |-->InSeg1 |
| | | |-->OutSeg1 |
| | v |
| ------XCext1 |
| | |
V v |
Tunnel2-->XC1 |
^ | | |
| | |-->InSeg2 |
| | |-->OutSeg2 |
| v |
------XCext2------------
Figure 1: Table References of MIB Modules
MIB Module Extensions
Four MIB modules are extended to support MPLS-TP Tunnels, namely, MPLS-TE-EXT-STD-MIB, MPLS-TC-EXT-STD-MIB, MPLS-ID-STD-MIB, and MPLS-LSR-EXT-STD-MIB. The following section provides the summary of changes.
Summary of MIB Module Changes
- Node configuration table (mplsTunnelExtNodeConfigTable) for setting
the local identifier for Tunnel Ingress and Egress identifiers.
- Node IP map table (mplsTunnelExtNodeIpMapTable) for querying the
local identifier for a given Global_ID and Node_ID.
- Node ICC map table (mplsTunnelExtNodeIccMapTable) for querying the
local identifier for a given ICC_Operator_ID and Node_ID.
- Tunnel extension table (mplsTunnelExtTable) for setting up MPLS-TP
Tunnels with sparse extension of mplsTunnelTable.
- Textual conventions and object definitions for MPLS-TP Tunnels.
- Cross-connect extension table (mplsXCExtTable) for setting up the
MPLS-TP LSPs.
These tables are described in the subsequent sections.
MPLS-TE-EXT-STD-MIB
The TE MIB module extensions and details of the tables are described in the following sections.
mplsTunnelExtNodeConfigTable
The mplsTunnelExtNodeConfigTable is used to assign a local identifier for a given ICC_Operator_ID::Node_ID or Global_ID::Node_ID combination as defined in RFC6923 and RFC6370, respectively. The CC is a string of two characters, each being an uppercase Basic Latin alphabetic (i.e., A-Z). The ICC is a string of one to six characters, each an uppercase Basic Latin alphabetic (i.e., A-Z) or numeric (i.e., 0-9). All of the characters are encoded using [T.50] as described in RFC6370.
In the IP-compatible mode, Global_ID::Node_ID, is used to uniquely identify a node. For each ICC_Operator_ID::Node_ID or Global_ID::Node_ID, there is a unique entry in the table representing a node. As the regular TE tunnels use the IP address as the LSR ID, the local identifier should be below the first valid IP address, which is 16777216[1.0.0.0]. Every node is assigned a local identifier within a range of 0 to 16777215. This local identifier is used for indexing into mplsTunnelTable as mplsTunnelIngressLSRId and mplsTunnelEgressLSRId.
For IP-compatible environments, an MPLS-TP Tunnel is indexed by Tunnel Index, Tunnel Instance, Source Global_ID, Source Node_ID, Destination Global_ID, and Destination Node_ID.
For ICC-based environments, an MPLS-TP Tunnel is indexed by Tunnel Index, Tunnel Instance, Source CC, Source ICC, Source Node_ID, Destination CC, Destination ICC, and Destination Node_ID.
As mplsTunnelTable is indexed by mplsTunnelIndex, mplsTunnelInstance, mplsTunnelIngressLSRId, and mplsTunnelEgressLSRId, the MPLS-TP tunnel identifiers cannot be used directly.
The mplsTunnelExtNodeConfigTable will be used to store an entry for ICC_Operator_ID::Node_ID or Global_ID::Node_ID with a local identifier to be used as the LSR ID in mplsTunnelTable.
mplsTunnelExtNodeIpMapTable
The read-only mplsTunnelExtNodeIpMapTable is used to query the local identifier assigned and stored in mplsTunnelExtNodeConfigTable for a given Global_ID::Node_ID. In order to query the local identifier, in
the IP-compatible mode, this table is indexed with Global_ID::Node_ID. In the IP-compatible mode for a TP tunnel, Global_ID::Node_ID is used.
A separate query is made to get the local identifier of both Ingress and Egress Global_ID::Node_ID identifiers. These local identifiers are used as mplsTunnelIngressLSRId and mplsTunnelEgressLSRId when indexing mplsTunnelTable.
mplsTunnelExtNodeIccMapTable
The read-only mplsTunnelExtNodeIccMapTable is used to query the local identifier assigned and stored in the mplsTunnelExtNodeConfigTable for a given ICC_Operator_ID::Node_ID.
A separate query is made to get the local identifier of both Ingress and Egress ICC_Operator_ID::Node_ID. These local identifiers are used as mplsTunnelIngressLSRId and mplsTunnelEgressLSRId when indexing mplsTunnelTable.
mplsTunnelExtTable
This table sparsely extends the mplsTunnelTable in order to support MPLS-TP Tunnels with additional objects. All the additional attributes specific to supporting a TP tunnel are contained in this extended table and could be accessed with the mplsTunnelTable indices.
The gmplsTunnelReversePerfTable RFC4802 should be used to provide per-tunnel packet performance information for the reverse direction of a bidirectional tunnel. It can be seen as supplementing the mplsTunnelPerfTable, which augments the mplsTunnelTable.
MPLS-TC-EXT-STD-MIB
This MIB module contains textual conventions for LSPs of MPLS-based transport networks.
MPLS-ID-STD-MIB
This MIB module contains identifier object definitions for MPLS Traffic Engineering in transport networks.
MPLS-LSR-EXT-STD-MIB
This MIB module contains generic object definitions (including the mplsXCExtTable -- cross-connect extension table -- for setting up the MPLS-TP LSPs with sparse extension of mplsXCTable) for MPLS LSRs in transport networks.
The Use of RowPointer
This document follows the RowPointer usage as described in Section 10 of RFC3812.
A new RowPointer object, mplsTunnelExtOppositeDirPtr, is added to mplsTunnelExtTable of MPLS-TE-EXT-STD-MIB module. This RowPointer object points to the tunnel entry in the opposite direction.
Two additional RowPointers objects, mplsXCExtTunnelPointer and mplsXCExtOppositeDirXCPtr, are added to the mplsXCExtTable of MPLS-LSR-EXT-STD-MIB. The RowPointer mplsXCExtTunnelPointer is a read-only object used to indicate the back pointer to the tunnel entry. The RowPointer mplsXCExtOppositeDirXCPtr object points to the opposite-direction XC entry.
If either of these RowPointers return zeroDotZero, it implies that there is no entry associated with the RowPointer object.
MIB Modules' Interdependencies
This section provides an overview of the relationships between the MPLS-TP TE MIB module and other MPLS MIB modules.
The arrows in the following diagram show a "depends on" relationship. A relationship of "MIB module A depends on MIB module B" means that MIB module A uses an object, object identifier, or textual convention defined in MIB module B, or that MIB module A contains a pointer (index or RowPointer) to an object in MIB module B.
MPLS-TC-EXT-STD-MIB
^
|
|
+<---- MPLS-ID-STD-MIB
^
| |
+<---- MPLS-TE-EXT-STD-MIB
| |
| V
| MPLS-TE-STD-MIB
| |
| |
| V
| MPLS-LSR-STD-MIB
| ^
| |
| |
+------MPLS-LSR-EXT-STD-MIB
Figure 2: MIB Modules' Interdependencies
Thus:
- All the new MPLS extension MIB modules depend on
MPLS-TC-EXT-STD-MIB.
- MPLS-ID-STD-MIB contains references to objects in
MPLS-TE-STD-MIB RFC3812.
- MPLS-TE-EXT-STD-MIB contains references to objects in
MPLS-TE-STD-MIB RFC3812.
- MPLS-LSR-EXT-STD-MIB contains references to objects in
MPLS-LSR-STD-MIB RFC3813.
The mplsTunnelExtTable sparsely extends the mplsTunnelTable of MPLS-TE-STD-MIB RFC3812. This helps in associating the reverse- direction tunnel information.
The mplsXCExtTable sparsely extends the mplsXCTable of MPLS-LSR-STD-MIB RFC3813. This helps in pointing back to the tunnel entry for easy tunnel access from the XC entry.
Note that all of the MIB modules shown above in the figure also have a dependency on MPLS-TC-STD-MIB.
Dependencies between MIB Module Tables
The tables in MPLS-TE-EXT-STD-MIB are related as shown on the diagram below. The arrows indicate a reference from one table to another.
mplsTunnelExtNodeConfigTable
^ ^ ^
| | |
| | |
| | |
| | +----------------------+
| | |
| mplsTunnelExtNodeIpMapTable mplsTunnelExtNodeIccMapTable
|
| mplsXCExtTable
| | ^
| +---------+ |
| | |
| | |
| V V
mplsTunnelTable ---->mplsXCTable
^
|
|
|
mplsTunnelExtTable
Figure 3: Dependencies between MIB Module Tables
An existing mplsTunnelTable uses the mplsTunnelExtNodeConfigTable table to map the Global_ID::Node_ID and/or ICC_Operator_ID::Node_ID with the local number in order to accommodate in the existing tunnel table's ingress/egress LSR ID.
The new mplsTunnelExtTable provides the reverse-direction LSP information for the existing tunnel table so that bidirectional LSPs can be created.
The mplsXCExtTable sparsely extends the mplsLsrXCTable to provide backward reference to tunnel entry.
Example of MPLS-TP Tunnel Setup
In this section, we provide an example of configuring MPLS-TP bidirectional tunnels with IP tunnel identifiers. This example provides the usage of the MPLS-TP Tunnel MIB along with the extended MIB modules introduced in this document.
Do note that a MPLS-TP Tunnel could be set up statically as well as signaled via the control plane. This example considers accessing MIB objects on a head-end for static and signaled MPLS-TP Tunnels. This section shows the configuration of the forward- and reverse-direction MPLS-TP LSPs that run between East and West, and vice versa. Only objects relevant to MPLS-TP Tunnels are illustrated here.
In mplsTunnelExtNodeConfigTable:
{ -- Non-IP Ingress LSR_ID (Index to the table)
mplsTunnelExtNodeConfigLocalId = 1,
mplsTunnelExtNodeConfigGlobalId = 1234, mplsTunnelExtNodeConfigNodeId = 10,
-- Mandatory parameters needed to activate the row go here
mplsTunnelExtNodeConfigRowStatus = createAndGo (4)
-- Non-IP Egress LSR ID (Index to the table)
mplsTunnelExtNodeConfigLocalId = 2, mplsTunnelExtNodeConfigGlobalId = 1234, mplsTunnelExtNodeConfigNodeId = 20,
-- Mandatory parameters needed to activate the row go here
mplsTunnelExtNodeConfigRowStatus = createAndGo (4)
}
This will create an entry in the mplsTunnelExtNodeConfigTable for a Global_ID::Node_ID. The Ingress and Egress LSR are represented by separate entries.
The following read-only mplsTunnelExtNodeIpMapTable table is populated automatically upon creating an entry in mplsTunnelExtNodeConfigTable, and this table is used to retrieve the local identifier for the given Global_ID::Node_ID.
In mplsTunnelExtNodeIpMapTable:
{ -- Global_ID (Index to the table)
mplsTunnelExtNodeIpMapGlobalId = 1234,
-- Node Identifier (Index to the table)
mplsTunnelExtNodeIpMapNodeId = 10, mplsTunnelExtNodeIpMapLocalId = 1
-- Global_ID (Index to the table)
mplsTunnelExtNodeIpMapGlobalId = 1234,
-- Node Identifier (Index to the table)
mplsTunnelExtNodeIpMapNodeId = 20, mplsTunnelExtNodeIpMapLocalId = 2
}
Example of MPLS-TP Static Co-routed Bidirectional Tunnel Setup
The following denotes the co-routed bidirectional tunnel "head" entry.
mplsTunnelEntry
In mplsTunnelTable:
{
mplsTunnelIndex = 1, mplsTunnelInstance = 1,
-- Local map number created in mplsTunnelExtNodeConfigTable for -- Ingress LSR ID
mplsTunnelIngressLSRId = 1,
-- Local map number created in mplsTunnelExtNodeConfigTable for -- Egress LSR ID
mplsTunnelEgressLSRId = 2, mplsTunnelName = "TP co-routed bidirectional LSP", mplsTunnelDescr = "East to West", mplsTunnelIsIf = true (1),
-- RowPointer MUST point to the first accessible column
mplsTunnelXCPointer =
mplsXCLspId.4.0.0.0.1.1.0.4.0.0.0.1,
mplsTunnelSignallingProto = none (1),
mplsTunnelSetupPrio = 0,
mplsTunnelHoldingPrio = 0,
mplsTunnelSessionAttributes = 0,
mplsTunnelLocalProtectInUse = false (0),
-- RowPointer MUST point to the first accessible column
mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.5, mplsTunnelInstancePriority = 1, mplsTunnelHopTableIndex = 1, mplsTunnelIncludeAnyAffinity = 0, mplsTunnelIncludeAllAffinity = 0, mplsTunnelExcludeAnyAffinity = 0, mplsTunnelRole = head (1),
-- Mandatory parameters needed to activate the row go here
mplsTunnelRowStatus = createAndGo (4)
}
mplsTunnelExtEntry
-- An MPLS extension table In mplsTunnelExtTable: {
-- This opposite-direction tunnel pointer may point to 0.0 -- if co-routed bidirectional tunnel is managed by single tunnel -- entry mplsTunnelExtOppositeDirTnlPtr = 0.0 -- Set both the Ingress and Egress LocalId objects to TRUE, as -- this tunnel entry uses the local identifiers. mplsTunnelExtIngressLSRLocalIdValid = true, mplsTunnelExtEgressLSRLocalIdValid = true
}
Next, we must create the appropriate in-segment and out-segment entries. These are done in RFC3813 using the mplsInSegmentTable and mplsOutSegmentTable.
Forward-Direction mplsOutSegmentEntry
For the forward direction:
In mplsOutSegmentTable: {
mplsOutSegmentIndex = 0x0000001, mplsOutSegmentInterface = 13, -- outgoing interface mplsOutSegmentPushTopLabel = true(1), mplsOutSegmentTopLabel = 22, -- outgoing label
-- RowPointer MUST point to the first accessible column. mplsOutSegmentTrafficParamPtr = 0.0, mplsOutSegmentRowStatus = createAndGo (4)
}
Reverse-Direction mplsInSegmentEntry
For the reverse direction:
In mplsInSegmentTable: {
mplsInSegmentIndex = 0x0000001 mplsInSegmentLabel = 21, -- incoming label mplsInSegmentNPop = 1, mplsInSegmentInterface = 13, -- incoming interface
-- RowPointer MUST point to the first accessible column. mplsInSegmentTrafficParamPtr = 0.0, mplsInSegmentRowStatus = createAndGo (4)
}
Next, two cross-connect entries are created in the mplsXCTable of the MPLS-LSR-STD-MIB RFC3813, thereby associating the newly created segments together.
Forward-Direction mplsXCEntry
In mplsXCTable: {
mplsXCIndex = 0x01, mplsXCInSegmentIndex = 0x00000000, mplsXCOutSegmentIndex = 0x00000001, mplsXCLspId = 0x0102 -- unique ID
-- only a single outgoing label mplsXCLabelStackIndex = 0x00, mplsXCRowStatus = createAndGo(4)
}
Reverse-Direction mplsXCEntry
In mplsXCTable: {
mplsXCIndex = 0x01, mplsXCInSegmentIndex = 0x00000001, mplsXCOutSegmentIndex = 0x00000000, mplsXCLspId = 0x0102 -- unique ID -- only a single outgoing label mplsXCLabelStackIndex = 0x00, mplsXCRowStatus = createAndGo(4)
}
This table entry is extended by an entry in the mplsXCExtTable. Note that the nature of the 'extends' relationship is a sparse augmentation so that the entry in the mplsXCExtTable has the same index values as the entry in the mplsXCTable.
Forward-Direction mplsXCExtEntry
In mplsXCExtTable (0x01, 0x00000000, 0x00000001) {
-- Back pointer from XC table to Tunnel table
mplsXCExtTunnelPointer = mplsTunnelName.1.1.1.2
mplsXCExtOppositeDirXCPtr =
mplsXCLspId.4.0.0.0.1.4.0.0.0.1.1.0
}
Reverse-Direction mplsXCExtEntry
Next, for the reverse direction:
In mplsXCExtTable (0x01, 0x00000001, 0x00000000) {
-- Back pointer from XC table to Tunnel table
mplsXCExtTunnelPointer = mplsTunnelName.1.1.1.2
mplsXCExtOppositeDirXCPtr =
mplsXCLspId.4.0.0.0.1.1.0.4.0.0.0.1
}
Example of MPLS-TP Static Associated Bidirectional Tunnel Setup
The MPLS-TP associated bidirectional tunnel is implemented by two different unidirectional tunnels (Forward and Reverse LSPs), and these are associated together using mplsTunnelExtTable. Two different tunnel entries to provide the forward and reverse directions MAY be used for co-routed bidirectional tunnels as well.
The following denotes the associated bidirectional forward tunnel "head" entry:
Forward-Direction mplsTunnelEntry
In mplsTunnelTable:
{
mplsTunnelIndex = 1, mplsTunnelInstance = 1,
-- Local map number created in mplsTunnelExtNodeConfigTable for -- Ingress LSR ID
mplsTunnelIngressLSRId = 1,
-- Local map number created in mplsTunnelExtNodeConfigTable for -- Egress LSR ID
mplsTunnelEgressLSRId = 2,
mplsTunnelName = "TP associated bidirectional
forward LSP",
mplsTunnelDescr = "East to West",
mplsTunnelIsIf = true (1),
-- RowPointer MUST point to the first accessible column
mplsTunnelXCPointer =
mplsXCLspId.4.0.0.0.1.1.0.4.0.0.0.1,
mplsTunnelSignallingProto = none (1),
mplsTunnelSetupPrio = 0,
mplsTunnelHoldingPrio = 0,
mplsTunnelSessionAttributes = 0,
mplsTunnelLocalProtectInUse = false (0),
-- RowPointer MUST point to the first accessible column
mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.5, mplsTunnelInstancePriority = 1, mplsTunnelHopTableIndex = 1, mplsTunnelIncludeAnyAffinity = 0,
mplsTunnelIncludeAllAffinity = 0, mplsTunnelExcludeAnyAffinity = 0, mplsTunnelRole = head (1),
-- Mandatory parameters needed to activate the row go here
mplsTunnelRowStatus = createAndGo (4)
}
Forward-Direction mplsTunnelExtEntry
For the associated bidirectional forward LSP, in mplsTunnelExtTable:
{
mplsTunnelExtOppositeDirPtr = mplsTunnelName.2.1.2.1 -- Set both the Ingress and Egress LocalId objects to TRUE, as -- this tunnel entry uses the local identifiers. mplsTunnelExtIngressLSRLocalIdValid = true, mplsTunnelExtEgressLSRLocalIdValid = true
}
Forward-Direction mplsOutSegmentTable
For the forward direction:
In mplsOutSegmentTable: {
mplsOutSegmentIndex = 0x0000001, mplsOutSegmentInterface = 13, -- outgoing interface mplsOutSegmentPushTopLabel = true(1), mplsOutSegmentTopLabel = 22, -- outgoing label
-- RowPointer MUST point to the first accessible column. mplsOutSegmentTrafficParamPtr = 0.0, mplsOutSegmentRowStatus = createAndGo (4)
}
Forward-Direction mplsXCEntry
In mplsXCTable: {
mplsXCIndex = 0x01, mplsXCInSegmentIndex = 0x00000000, mplsXCOutSegmentIndex = 0x00000001, mplsXCLspId = 0x0102 -- unique ID -- only a single outgoing label mplsXCLabelStackIndex = 0x00, mplsXCRowStatus = createAndGo(4)
}
Forward-Direction mplsXCExtEntry
In mplsXCExtTable (0x01, 0x00000000, 0x00000001) {
-- Back pointer from XC table to Tunnel table
mplsXCExtTunnelPointer = mplsTunnelName.1.1.1.2
mplsXCExtOppositeDirXCPtr =
mplsXCLspId.4.0.0.0.1.4.0.0.0.1.1.0
}
Reverse-Direction mplsTunnelEntry
The following denotes the configured associated bidirectional reverse tunnel "tail" entry:
In mplsTunnelTable:
{
mplsTunnelIndex = 2, mplsTunnelInstance = 1,
-- Local map number created in mplsTunnelExtNodeConfigTable for -- Ingress LSR ID
mplsTunnelIngressLSRId = 2,
-- Local map number created in mplsTunnelExtNodeConfigTable for -- Egress LSR ID
mplsTunnelEgressLSRId = 1,
mplsTunnelName = "TP associated bidirectional
reverse LSP",
mplsTunnelDescr = "West to East",
mplsTunnelIsIf = true (1),
-- RowPointer MUST point to the first accessible column
mplsTunnelXCPointer =
mplsXCLspId.4.0.0.0.1.4.0.0.0.1.1.0,
mplsTunnelSignallingProto = none (1),
mplsTunnelSetupPrio = 0,
mplsTunnelHoldingPrio = 0,
mplsTunnelSessionAttributes = 0,
mplsTunnelLocalProtectInUse = false (0),
-- RowPointer MUST point to the first accessible column
mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.5, mplsTunnelInstancePriority = 1, mplsTunnelHopTableIndex = 1, mplsTunnelIncludeAnyAffinity = 0, mplsTunnelIncludeAllAffinity = 0, mplsTunnelExcludeAnyAffinity = 0, mplsTunnelRole = head (1),
-- Mandatory parameters needed to activate the row go here
mplsTunnelRowStatus = createAndGo (4)
}
Reverse-Direction mplsTunnelExtEntry
For the associated bidirectional reverse LSP, in mplsTunnelExtTable:
{
mplsTunnelExtOppositeDirPtr = mplsTunnelName.1.1.1.2 -- Set both the Ingress and Egress LocalId objects to TRUE, as -- this tunnel entry uses the local identifiers. mplsTunnelExtIngressLSRLocalIdValid = true, mplsTunnelExtEgressLSRLocalIdValid = true
}
Reverse-Direction mplsInSegmentEntry
Next, we must create the appropriate in-segment and out-segment entries. These are done in RFC3813 using the mplsInSegmentTable and mplsOutSegmentTable.
In mplsInSegmentTable: {
mplsInSegmentIndex = 0x0000001 mplsInSegmentLabel = 21, -- incoming label mplsInSegmentNPop = 1, mplsInSegmentInterface = 13, -- incoming interface
-- RowPointer MUST point to the first accessible column. mplsInSegmentTrafficParamPtr = 0.0, mplsInSegmentRowStatus = createAndGo (4)
}
Next, two cross-connect entries are created in the mplsXCTable of the MPLS-LSR-STD-MIB RFC3813, thereby associating the newly created segments together.
Reverse-Direction mplsXCEntry
In mplsXCTable: {
mplsXCIndex = 0x01, mplsXCInSegmentIndex = 0x00000001, mplsXCOutSegmentIndex = 0x00000000, mplsXCLspId = 0x0102 -- unique ID -- only a single outgoing label mplsXCLabelStackIndex = 0x00,
mplsXCRowStatus = createAndGo(4)
}
This table entry is extended by an entry in the mplsXCExtTable. Note that the nature of the 'extends' relationship is a sparse augmentation so that the entry in the mplsXCExtTable has the same index values as the entry in the mplsXCTable.
9.2.10. Reverse-Direction mplsXCExtEntry
Next, for the reverse direction:
In mplsXCExtTable (0x01, 0x00000001, 0x00000000) {
-- Back pointer from XC table to Tunnel table
mplsXCExtTunnelPointer = mplsTunnelName.2.1.2.1
mplsXCExtOppositeDirXCPtr =
mplsXCLspId.4.0.0.0.1.1.0.4.0.0.0.1
}
Example of MPLS-TP Signaled Co-routed Bidirectional Tunnel Setup
The following denotes the co-routed bidirectional tunnel "head" entry. In intermediate and tail-end nodes, the tunnel table and its associated tables are created by the local management subsystem (e.g., agent) when the MPLS-TP Tunnel is signaled successfully. Refer to RFC3812 and RFC4802 for examples of signaled tunnel table configuration.
mplsTunnelEntry
In mplsTunnelTable:
{
mplsTunnelIndex = 1, mplsTunnelInstance = 0,
-- Local map number created in mplsTunnelExtNodeConfigTable for -- Ingress LSR-Id. For the intermediate and tail-end nodes, -- the local management entity is expected to pick the first -- available local identifier that is not used in mplsTunnelTable.
mplsTunnelIngressLSRId = 1,
-- Local map number created in mplsTunnelExtNodeConfigTable for -- Egress LSR ID
mplsTunnelEgressLSRId = 2, mplsTunnelName = "TP co-routed bidirectional LSP", mplsTunnelDescr = "East to West", mplsTunnelIsIf = true (1),
-- RowPointer MUST point to the first accessible column
mplsTunnelXCPointer =
mplsXCLspId.4.0.0.0.1.1.0.4.0.0.0.1,
mplsTunnelSignallingProto = none (1),
mplsTunnelSetupPrio = 0,
mplsTunnelHoldingPrio = 0,
mplsTunnelSessionAttributes = 0,
mplsTunnelLocalProtectInUse = false (0),
-- RowPointer MUST point to the first accessible column
mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.5, mplsTunnelInstancePriority = 1, mplsTunnelHopTableIndex = 1, mplsTunnelIncludeAnyAffinity = 0, mplsTunnelIncludeAllAffinity = 0, mplsTunnelExcludeAnyAffinity = 0, mplsTunnelRole = head (1),
-- Mandatory parameters needed to activate the row go here
mplsTunnelRowStatus = createAndGo (4)
}
mplsTunnelExtEntry
-- An MPLS extension table In mplsTunnelExtTable: {
-- This opposite-direction tunnel pointer may point to 0.0 -- if co-routed bidirectional tunnel is managed by a single -- tunnel entry mplsTunnelExtOppositeDirTnlPtr = 0.0 -- Set both the Ingress and Egress LocalId objects to TRUE, as -- this tunnel entry uses the local identifiers. mplsTunnelExtIngressLSRLocalIdValid = true, mplsTunnelExtEgressLSRLocalIdValid = true
}
Next, we must create the appropriate in-segment and out-segment entries. These are done in RFC3813 using the mplsInSegmentTable and mplsOutSegmentTable.
Forward-Direction mplsOutSegmentEntry
The forward-direction mplsOutSegmentTable will be populated automatically based on the information received from the signaling protocol.
Reverse-Direction mplsInSegmentEntry
The reverse-direction mplsOutSegmentTable will be populated automatically based on the information received from the signaling protocol.
Next, two cross-connect entries are created in the mplsXCTable of the MPLS-LSR-STD-MIB RFC3813, thereby associating the newly created segments together.
Forward-Direction mplsXCEntry
The forward-direction mplsXCEntry will be populated as soon as the forward-path label information is available.
Reverse-Direction mplsXCEntry
The reverse-direction mplsXCEntry will be populated as soon as the reverse-path label information is available.
This table entry is extended by an entry in the mplsXCExtTable. Note that the nature of the 'extends' relationship is a sparse augmentation so that the entry in the mplsXCExtTable has the same index values as the entry in the mplsXCTable.
Forward-Direction mplsXCExtEntry
Once the forward path information is negotiated using the signaling protocol, the forward-direction mplsXCExtEntry will be created for associating the opposite-direction XC entry and tunnel table entry.
Reverse-Direction mplsXCExtEntry
Once the reverse path information is negotiated using the signaling protocol, the reverse-direction mplsXCExtEntry will be created for associating the opposite-direction XC entry and tunnel table entry.
10. MPLS Textual Convention Extension MIB Definitions
MPLS-TC-EXT-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, Unsigned32
FROM SNMPv2-SMI -- RFC 2578
TEXTUAL-CONVENTION
FROM SNMPv2-TC -- RFC 2579
mplsStdMIB
FROM MPLS-TC-STD-MIB -- RFC 3811
;
mplsTcExtStdMIB MODULE-IDENTITY
LAST-UPDATED
"201502020000Z" -- February 2, 2015
ORGANIZATION
"Multiprotocol Label Switching (MPLS) Working Group"
CONTACT-INFO
"
Venkatesan Mahalingam
Dell Inc,
5450 Great America Parkway,
Santa Clara, CA 95054, USA
Email: [email protected]
Kannan KV Sampath
Redeem,
India
Email: [email protected]
Sam Aldrin
Huawei Technologies
2330 Central Express Way,
Santa Clara, CA 95051, USA
Email: [email protected]
Thomas D. Nadeau
Email: [email protected]
"
DESCRIPTION
"This MIB module contains Textual Conventions for LSPs of MPLS-
based transport networks.
Copyright (c) 2015 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to
the license terms contained in, the Simplified BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(http://trustee.ietf.org/license-info)."
-- Revision history.
REVISION
"201502020000Z" -- February 2, 2015
DESCRIPTION
"MPLS Textual Convention Extensions"
::= { mplsStdMIB 17 }
MplsGlobalId ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This object contains the Textual Convention for an IP-based
operator-unique identifier (Global_ID). The Global_ID can
contain the 2-octet or 4-octet value of the operator's
Autonomous System Number (ASN).
When the Global_ID is derived from a 2-octet ASN,
the two high-order octets of this 4-octet identifier
MUST be set to zero (0x00). Further, ASN 0 is reserved.
The size of the Global_ID string MUST be zero if
the Global_ID is invalid.
Note that a Global_ID of zero is limited to entities
contained within a single operator and MUST NOT be used
across a Network-to-Network Interface (NNI). A non-zero
Global_ID MUST be derived from an ASN owned by
the operator."
REFERENCE
"MPLS Transport Profile (MPLS-TP) Identifiers, RFC 6370,
Section 3"
SYNTAX OCTET STRING (SIZE (4))
MplsCcId ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION
"The CC (Country Code) is a string of two characters, each
being an uppercase Basic Latin alphabetic (i.e., A-Z).
The characters are encoded using ITU-T Recommendation T.50.
The size of the CC string MUST be zero if the CC identifier
is invalid."
REFERENCE
"MPLS-TP Identifiers Following ITU-T Conventions,
RFC 6923, Section 3.
International Reference Alphabet (IRA) (Formerly
International Alphabet No. 5 or IA5) - Information
technology - 7-bit coded character set for information
exchange, ITU-T Recommendation T.50, September 1992."
SYNTAX OCTET STRING (SIZE (0|2))
MplsIccId ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION
"The ICC is a string of one to six characters, each
an uppercase Basic Latin alphabetic (i.e., A-Z) or
numeric (i.e., 0-9). The characters are encoded
using ITU-T Recommendation T.50. The size of
the ICC string MUST be zero if the ICC identifier
is invalid."
REFERENCE
"MPLS-TP Identifiers Following ITU-T Conventions,
RFC 6923, Section 3.
International Reference Alphabet (IRA) (Formerly
International Alphabet No. 5 or IA5) - Information
technology - 7-bit coded character set for information
exchange, ITU-T Recommendation T.50, September 1992."
SYNTAX OCTET STRING (SIZE (0|1..6))
MplsNodeId ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"The Node_ID is assigned within the scope of
the Global_ID/ICC_Operator_ID.
When IPv4 addresses are in use, the value of this object
can be derived from the LSR's IPv4 loopback address.
When IPv6 addresses are in use, the value of this object
can be a 32-bit value unique within the scope of
a Global_ID.
Note that, when IP reachability is not needed, the 32-bit
Node_ID is not required to have any association
with the IPv4 address space. The value of 0 indicates
an invalid Node_ID."
REFERENCE
"MPLS Transport Profile (MPLS-TP) Identifiers, RFC 6370,
Section 4"
SYNTAX Unsigned32 (0|1..4294967295)
-- MPLS-TC-EXT-STD-MIB module ends END
11. MPLS Identifier MIB Definitions
MPLS-ID-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE FROM SNMPv2-SMI -- RFC 2578 MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF -- RFC 2580 mplsStdMIB FROM MPLS-TC-STD-MIB -- RFC 3811 MplsGlobalId, MplsCcId, MplsIccId, MplsNodeId FROM MPLS-TC-EXT-STD-MIB ;
mplsIdStdMIB MODULE-IDENTITY
LAST-UPDATED
"201502020000Z" -- February 2, 2015
ORGANIZATION
"Multiprotocol Label Switching (MPLS) Working Group"
CONTACT-INFO
"
Venkatesan Mahalingam
Dell Inc,
5450 Great America Parkway,
Santa Clara, CA 95054, USA
Email: [email protected]
Kannan KV Sampath
Redeem,
India
Email: [email protected]
Sam Aldrin
Huawei Technologies
2330 Central Express Way,
Santa Clara, CA 95051, USA
Email: [email protected]
Thomas D. Nadeau
Email: [email protected]
"
DESCRIPTION
"This MIB module contains identifier object definitions for
MPLS Traffic Engineering in transport networks.
Copyright (c) 2015 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to
the license terms contained in, the Simplified BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(http://trustee.ietf.org/license-info)."
-- Revision history.
REVISION
"201502020000Z" -- February 2, 2015
DESCRIPTION
"This MIB modules defines the MIB objects for MPLS-TP
identifiers"
::= { mplsStdMIB 18 }
-- notifications
mplsIdNotifications OBJECT IDENTIFIER ::= { mplsIdStdMIB 0 }
-- tables, scalars
mplsIdObjects OBJECT IDENTIFIER ::= { mplsIdStdMIB 1 }
-- conformance
mplsIdConformance OBJECT IDENTIFIER ::= { mplsIdStdMIB 2 }
-- MPLS common objects
mplsIdGlobalId OBJECT-TYPE
SYNTAX MplsGlobalId
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object allows the operator or service provider to
assign a unique operator identifier, also called the MPLS-TP
Global_ID.
If this value is used in mplsTunnelExtNodeConfigGlobalId
for mapping Global_ID::Node_ID with the local identifier,
then this object value MUST NOT be changed."
::= { mplsIdObjects 1 }
mplsIdNodeId OBJECT-TYPE
SYNTAX MplsNodeId
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object allows the operator or service provider to
assign a unique MPLS-TP Node_ID. The Node_ID is assigned
within the scope of the Global_ID/ICC_Operator_ID.
If this value is used in mplsTunnelExtNodeConfigNodeId
for mapping Global_ID::Node_ID with the local identifier,
then this object value SHOULD NOT be changed.
If this value is used in mplsTunnelExtNodeConfigNodeId
for mapping ICC_Operator_ID::Node_ID with the local
identifier, then this object value MUST NOT be changed."
::= { mplsIdObjects 2 }
mplsIdCc OBJECT-TYPE
SYNTAX MplsCcId
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object allows the operator or service provider to
assign a Country Code (CC) to the node. Global
uniqueness of ICC is assured by concatenating the ICC
with a Country Code (CC).
If this value is used in mplsTunnelExtNodeConfigCcId
for mapping ICC_Operator_ID::Node_ID with the local
identifier, then this object value MUST NOT be changed."
REFERENCE
"MPLS-TP Identifiers Following ITU-T Conventions,
RFC 6923, Section 3"
::= { mplsIdObjects 3 }
mplsIdIcc OBJECT-TYPE
SYNTAX MplsIccId
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object allows the operator or service provider to
assign a unique MPLS-TP ITU-T Carrier Code (ICC) to
the node. Together, the CC and the ICC form
the ICC_Operator_ID as CC::ICC.
If this value is used in mplsTunnelExtNodeConfigIccId
for mapping ICC_Operator_ID::Node_ID with the local
identifier, then this object value MUST NOT be changed."
REFERENCE
"MPLS-TP Identifiers Following ITU-T Conventions,
RFC 6923, Section 3"
::= { mplsIdObjects 4 }
-- Module compliance.
mplsIdCompliances
OBJECT IDENTIFIER ::= { mplsIdConformance 1 }
mplsIdGroups
OBJECT IDENTIFIER ::= { mplsIdConformance 2 }
-- Compliance requirement for fully compliant implementations.
mplsIdModuleFullCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for agents that provide full
support of the MPLS-ID-STD-MIB module."
MODULE -- this module
-- The mandatory group has to be implemented by all LSRs that
-- originate, terminate, or act as transit for MPLS-TP Tunnels.
GROUP mplsIdIpOperatorGroup
DESCRIPTION
"This group is mandatory for devices that support
IP-based identifier configuration."
GROUP mplsIdIccOperatorGroup
DESCRIPTION
"This group is mandatory for devices that support
ICC-based identifier configuration."
::= { mplsIdCompliances 1 }
-- Compliance requirement for read-only implementations.
mplsIdModuleReadOnlyCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for agents that only provide
read-only support for the MPLS-ID-STD-MIB module."
MODULE -- this module
GROUP mplsIdIpOperatorGroup
DESCRIPTION
"This group is mandatory for devices that support
IP-based identifier configuration."
GROUP mplsIdIccOperatorGroup
DESCRIPTION
"This group is mandatory for devices that support
ICC-based identifier configuration."
OBJECT mplsIdGlobalId
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsIdNodeId
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsIdCc
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsIdIcc
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
::= { mplsIdCompliances 2 }
-- Units of conformance.
mplsIdIpOperatorGroup OBJECT-GROUP
OBJECTS { mplsIdGlobalId,
mplsIdNodeId
}
STATUS current
DESCRIPTION
"The objects in this group are optional for an
ICC-based node."
::= { mplsIdGroups 1 }
mplsIdIccOperatorGroup OBJECT-GROUP
OBJECTS { mplsIdNodeId,
mplsIdCc,
mplsIdIcc
}
STATUS current
DESCRIPTION
"The objects in this group are optional for an
IP-based node."
::= { mplsIdGroups 2 }
-- MPLS-ID-STD-MIB module ends END
12. MPLS LSR Extension MIB Definitions
MPLS-LSR-EXT-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE
FROM SNMPv2-SMI -- RFC 2578
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF -- RFC 2580
mplsStdMIB
FROM MPLS-TC-STD-MIB -- RFC 3811
RowPointer
FROM SNMPv2-TC -- RFC 2579
mplsXCIndex, mplsXCInSegmentIndex, mplsXCOutSegmentIndex,
mplsInterfaceGroup, mplsInSegmentGroup, mplsOutSegmentGroup,
mplsXCGroup, mplsLsrNotificationGroup
FROM MPLS-LSR-STD-MIB; -- RFC 3813
mplsLsrExtStdMIB MODULE-IDENTITY
LAST-UPDATED
"201502020000Z" -- February 2, 2015
ORGANIZATION
"Multiprotocol Label Switching (MPLS) Working Group"
CONTACT-INFO
"
Venkatesan Mahalingam
Dell Inc,
5450 Great America Parkway,
Santa Clara, CA 95054, USA
Email: [email protected]
Kannan KV Sampath
Redeem,
India
Email: [email protected]
Sam Aldrin
Huawei Technologies
2330 Central Express Way,
Santa Clara, CA 95051, USA
Email: [email protected]
Thomas D. Nadeau
Email: [email protected]
"
DESCRIPTION
"This MIB module contains generic object definitions for
MPLS LSRs in transport networks.
Copyright (c) 2015 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to
the license terms contained in, the Simplified BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(http://trustee.ietf.org/license-info)."
-- Revision history.
REVISION
"201502020000Z" -- February 2, 2015
DESCRIPTION
"MPLS LSR-specific MIB objects extension"
::= { mplsStdMIB 19 }
-- notifications mplsLsrExtNotifications OBJECT IDENTIFIER ::= { mplsLsrExtStdMIB 0 }
-- tables, scalars mplsLsrExtObjects OBJECT IDENTIFIER
::= { mplsLsrExtStdMIB 1 }
-- conformance mplsLsrExtConformance OBJECT IDENTIFIER
::= { mplsLsrExtStdMIB 2 }
-- MPLS LSR common objects
mplsXCExtTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsXCExtEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table sparse augments the mplsXCTable of
MPLS-LSR-STD-MIB (RFC 3813) to provide MPLS-TP-specific
information about associated tunnel information"
REFERENCE
"Multiprotocol Label Switching (MPLS) Label Switching
Router (LSR) Management Information Base (MIB), RFC 3813."
- = { mplsLsrExtObjects 1 }
mplsXCExtEntry OBJECT-TYPE
SYNTAX MplsXCExtEntry MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table sparsely extends the cross-connect
information represented by an entry in
the mplsXCTable in MPLS-LSR-STD-MIB (RFC 3813) through
a sparse augmentation. An entry can be created by
a network operator via SNMP SET commands or in
response to signaling protocol events."
REFERENCE
"Multiprotocol Label Switching (MPLS) Label Switching
Router (LSR) Management Information Base (MIB), RFC 3813."
INDEX { mplsXCIndex, mplsXCInSegmentIndex,
mplsXCOutSegmentIndex }
::= { mplsXCExtTable 1 }
MplsXCExtEntry ::= SEQUENCE {
mplsXCExtTunnelPointer RowPointer, mplsXCExtOppositeDirXCPtr RowPointer
}
mplsXCExtTunnelPointer OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This read-only object indicates the back pointer to
the tunnel entry segment.
The only valid value for Tunnel Pointer is
mplsTunnelTable entry."
REFERENCE
"Multiprotocol Label Switching (MPLS) Label Switching
Router (LSR) Management Information Base (MIB), RFC 3813."
::= { mplsXCExtEntry 1 }
mplsXCExtOppositeDirXCPtr OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object indicates the pointer to the opposite-
direction XC entry. This object cannot be modified if
mplsXCRowStatus for the corresponding entry in the
mplsXCTable is active(1). If this pointer is not set or
removed, mplsXCOperStatus should be set to down(2)."
REFERENCE
"Multiprotocol Label Switching (MPLS) Label Switching
Router (LSR) Management Information Base (MIB), RFC 3813."
::= { mplsXCExtEntry 2 }
mplsLsrExtCompliances
OBJECT IDENTIFIER ::= { mplsLsrExtConformance 1 }
mplsLsrExtGroups
OBJECT IDENTIFIER ::= { mplsLsrExtConformance 2 }
-- Compliance requirement for fully compliant implementations.
mplsLsrExtModuleFullCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for agents that provide full support
for MPLS-LSR-EXT-STD-MIB.
The mandatory group has to be implemented by all LSRs
that originate, terminate, or act as transit for
TE-LSPs/tunnels.
In addition, depending on the type of tunnels supported,
other groups become mandatory as explained below."
MODULE MPLS-LSR-STD-MIB -- The MPLS-LSR-STD-MIB, RFC 3813
MANDATORY-GROUPS {
mplsInSegmentGroup,
mplsOutSegmentGroup,
mplsXCGroup,
mplsLsrNotificationGroup
}
MODULE -- this module
MANDATORY-GROUPS {
mplsXCExtGroup
}
::= { mplsLsrExtCompliances 1 }
-- Compliance requirement for implementations that provide -- read-only access.
mplsLsrExtModuleReadOnlyCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance requirement for implementations that only
provide read-only support for MPLS-LSR-EXT-STD-MIB.
Such devices can then be monitored but cannot be
configured using this MIB module."
MODULE MPLS-LSR-STD-MIB
MANDATORY-GROUPS {
mplsInterfaceGroup,
mplsInSegmentGroup,
mplsOutSegmentGroup
}
MODULE -- this module
GROUP mplsXCExtReadOnlyObjectsGroup
DESCRIPTION
"This group is mandatory for devices that support
opposite-direction XC configuration of tunnels."
-- mplsXCExtTable
OBJECT mplsXCExtOppositeDirXCPtr
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required.
This object indicates the pointer to the opposite-
direction XC entry. The only valid value for XC
Pointer is mplsXCTable entry."
::= { mplsLsrExtCompliances 2 }
-- Units of conformance.
mplsXCExtGroup OBJECT-GROUP
OBJECTS {
mplsXCExtTunnelPointer,
mplsXCExtOppositeDirXCPtr
}
STATUS current
DESCRIPTION
"This object should be supported in order to access
the tunnel entry from the XC entry."
::= { mplsLsrExtGroups 1 }
mplsXCExtReadOnlyObjectsGroup OBJECT-GROUP
OBJECTS {
mplsXCExtTunnelPointer,
mplsXCExtOppositeDirXCPtr
}
STATUS current
DESCRIPTION
"This Object is needed to associate the opposite-direction
(forward/reverse) XC entry."
::= { mplsLsrExtGroups 2 }
-- MPLS-LSR-EXT-STD-MIB module ends END
13. MPLS Tunnel Extension MIB Definitions
This MIB module imports from RFC2578, RFC2579, RFC2580, RFC3289, RFC3811, and RFC3812.
MPLS-TE-EXT-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE
FROM SNMPv2-SMI -- RFC 2578
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF -- RFC 2580
TruthValue, RowStatus, RowPointer, StorageType
FROM SNMPv2-TC -- RFC 2579
IndexIntegerNextFree
FROM DIFFSERV-MIB -- RFC 3289
MplsGlobalId, MplsNodeId, MplsCcId, MplsIccId
FROM MPLS-TC-EXT-STD-MIB
mplsStdMIB, MplsTunnelIndex, MplsTunnelInstanceIndex,
MplsExtendedTunnelId
FROM MPLS-TC-STD-MIB -- RFC 3811
mplsTunnelIndex, mplsTunnelInstance, mplsTunnelIngressLSRId,
mplsTunnelEgressLSRId
FROM MPLS-TE-STD-MIB -- RFC 3812 ;
mplsTeExtStdMIB MODULE-IDENTITY
LAST-UPDATED
"201502020000Z" -- February 2, 2015
ORGANIZATION
"Multiprotocol Label Switching (MPLS) Working Group"
CONTACT-INFO
"
Venkatesan Mahalingam
Dell Inc,
5450 Great America Parkway,
Santa Clara, CA 95054, USA
Email: [email protected]
Kannan KV Sampath
Redeem,
India
Email: [email protected]
Sam Aldrin
Huawei Technologies
2330 Central Express Way,
Santa Clara, CA 95051, USA
Email: [email protected]
Thomas D. Nadeau
Email: [email protected]
"
DESCRIPTION
"This MIB module contains generic object definitions for
extending the MPLS Traffic Engineering tunnels in transport
networks.
Copyright (c) 2015 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to
the license terms contained in, the Simplified BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(http://trustee.ietf.org/license-info)."
-- Revision history.
REVISION "201502020000Z" -- February 2, 2015
DESCRIPTION
"MPLS TE MIB objects extension"
::= { mplsStdMIB 20 }
-- Top-level components of this MIB module.
-- tables, scalars mplsTeExtObjects OBJECT IDENTIFIER
::= { mplsTeExtStdMIB 0 }
-- conformance mplsTeExtConformance OBJECT IDENTIFIER
::= { mplsTeExtStdMIB 1 }
-- Start of MPLS Transport Profile Node configuration table
mplsTunnelExtNodeConfigLocalIdNext OBJECT-TYPE
SYNTAX IndexIntegerNextFree (0..16777215) MAX-ACCESS read-only STATUS current DESCRIPTION
"This object contains an unused value for
mplsTunnelExtNodeConfigLocalId, or a zero to indicate
that none exist. Negative values are not allowed,
as they do not correspond to valid values of
mplsTunnelExtNodeConfigLocalId."
::= { mplsTeExtObjects 1 }
mplsTunnelExtNodeConfigTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsTunnelExtNodeConfigEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table allows the operator to map a node or
LSR identifier (IP-compatible [Global_ID::Node_ID] or
ICC-based [ICC_Operator_ID::Node_ID]) with a local
identifier.
This table is created to reuse the existing
mplsTunnelTable for MPLS-based transport network
tunnels also.
Since the MPLS tunnel's Ingress/Egress LSR identifiers'
size (Unsigned32) value is not compatible for
MPLS-TP Tunnel, i.e., Global_ID::Node_ID of size 8 bytes and
ICC_Operator_ID::Node_ID of size 12 bytes, there exists a
need to map the Global_ID::Node_ID or ICC_Operator_ID::Node_ID
with the local identifier of size 4 bytes (Unsigned32) value
in order to index (Ingress/Egress LSR identifier)
the existing mplsTunnelTable."
::= { mplsTeExtObjects 2 }
mplsTunnelExtNodeConfigEntry OBJECT-TYPE
SYNTAX MplsTunnelExtNodeConfigEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents a mapping
identification for the operator or service provider
to a node or an LSR.
As per RFC 6370, IP-compatible mapping is represented as Global_ID::Node_ID.
As per RFC 6923, the CC and the ICC form the ICC_Operator_ID as CC::ICC, and ICC-compatible mapping is represented as ICC_Operator_ID::Node_ID.
Note: Each entry in this table should have a unique
[Global_ID and Node_ID] or [CC::ICC and Node_ID] combination."
INDEX { mplsTunnelExtNodeConfigLocalId }
::= { mplsTunnelExtNodeConfigTable 1 }
MplsTunnelExtNodeConfigEntry ::= SEQUENCE {
mplsTunnelExtNodeConfigLocalId MplsExtendedTunnelId,
mplsTunnelExtNodeConfigGlobalId MplsGlobalId,
mplsTunnelExtNodeConfigCcId MplsCcId,
mplsTunnelExtNodeConfigIccId MplsIccId,
mplsTunnelExtNodeConfigNodeId MplsNodeId,
mplsTunnelExtNodeConfigIccValid TruthValue,
mplsTunnelExtNodeConfigStorageType StorageType,
mplsTunnelExtNodeConfigRowStatus RowStatus
}
mplsTunnelExtNodeConfigLocalId OBJECT-TYPE SYNTAX MplsExtendedTunnelId MAX-ACCESS not-accessible STATUS current
DESCRIPTION
"This object is used in accommodating the bigger-
size Global_ID::Node_ID and/or the ICC_Operator_ID::Node_ID
with the smaller-size LSR identifier in order to index
the mplsTunnelTable.
The local identifier is configured between 0 and 16777215,
as the valid IP address range starts from
16777216(01.00.00.00).
This range is chosen to determine whether the
mplsTunnelTable's Ingress/Egress LSR ID is an IP address or
local identifier. If the configured range is not an
IP address, the operator is expected to retrieve the
complete information (Global_ID::Node_ID or
ICC_Operator_ID::Node_ID) from mplsTunnelExtNodeConfigTable.
This way, the existing mplsTunnelTable is reused for
bidirectional tunnel extensions for MPLS-based transport
networks.
The local identifier allows the operator to assign
a unique identifier to map Global_ID::Node_ID and/or
ICC_Operator_ID::Node_ID. As this local identifier is unique
within the node and the same syntax of this object can be
used for MPLS-TE tunnel also, it is up to the operator/local
management entity to choose a non-conflicting value for
indexing the MPLS and MPLS-TP tunnel entries."
::= { mplsTunnelExtNodeConfigEntry 1 }
mplsTunnelExtNodeConfigGlobalId OBJECT-TYPE
SYNTAX MplsGlobalId
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object indicates the Global Operator Identifier.
This object has no meaning when
mplsTunnelExtNodeConfigIccValid is set true."
REFERENCE
"MPLS Transport Profile (MPLS-TP) Identifiers, RFC 6370,
Section 3."
::= { mplsTunnelExtNodeConfigEntry 2 }
mplsTunnelExtNodeConfigCcId OBJECT-TYPE
SYNTAX MplsCcId
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object allows the operator or service provider to
configure a unique MPLS-TP ITU-T Country Code (CC)
either for Ingress ID or Egress ID.
This object has no meaning when
mplsTunnelExtNodeConfigIccValid is set to false."
REFERENCE
"MPLS-TP Identifiers Following ITU-T Conventions,
RFC 6923, Section 3"
::= { mplsTunnelExtNodeConfigEntry 3 }
mplsTunnelExtNodeConfigIccId OBJECT-TYPE
SYNTAX MplsIccId
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object allows the operator or service provider to
configure a unique MPLS-TP ITU-T Carrier Code (ICC)
either for Ingress ID or Egress ID.
This object has no meaning when
mplsTunnelExtNodeConfigIccValid is set to false."
REFERENCE
"MPLS-TP Identifiers Following ITU-T Conventions,
RFC 6923, Section 3"
::= { mplsTunnelExtNodeConfigEntry 4 }
mplsTunnelExtNodeConfigNodeId OBJECT-TYPE
SYNTAX MplsNodeId
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object indicates the Node_ID within the scope
of a Global_ID or ICC_Operator_ID."
REFERENCE
"MPLS Transport Profile (MPLS-TP) Identifiers, RFC 6370,
Section 4."
::= { mplsTunnelExtNodeConfigEntry 5 }
mplsTunnelExtNodeConfigIccValid OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Denotes whether or not this entry uses
mplsTunnelExtNodeConfigCcId,
mplsTunnelExtNodeConfigIccId, and
mplsTunnelExtNodeConfigNodeId for mapping
the ICC-based identifiers with the local identifier.
Note that if this variable is set to false, then the
mplsTunnelExtNodeConfigGlobalId and
mplsTunnelExtNodeConfigNodeId objects should have
the valid information."
DEFVAL { false }
::= { mplsTunnelExtNodeConfigEntry 6 }
mplsTunnelExtNodeConfigStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This variable indicates the storage type for this
object.
Conceptual rows having the value 'permanent'
need not allow write-access to any columnar
objects in the row."
DEFVAL { volatile }
::= { mplsTunnelExtNodeConfigEntry 7 }
mplsTunnelExtNodeConfigRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object allows the operator to create, modify,
and/or delete a row in this table."
::= { mplsTunnelExtNodeConfigEntry 8 }
-- End of MPLS Transport Profile Node configuration table
-- Start of MPLS Transport Profile Node IP-compatible -- mapping table
mplsTunnelExtNodeIpMapTable OBJECT-TYPE SYNTAX SEQUENCE OF MplsTunnelExtNodeIpMapEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This read-only table allows the operator to retrieve
the local identifier for a given Global_ID::Node_ID in an
IP-compatible operator environment.
This table MAY be used in on-demand and/or proactive
OAM operations to get the Ingress/Egress LSR identifier
(local identifier) from Src-Global_Node_ID
or Dst-Global_Node_ID. The Ingress and Egress LSR
identifiers are used to retrieve the tunnel entry.
This table returns nothing when the associated entry
is not defined in mplsTunnelExtNodeConfigTable."
::= { mplsTeExtObjects 3 }
mplsTunnelExtNodeIpMapEntry OBJECT-TYPE
SYNTAX MplsTunnelExtNodeIpMapEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents a mapping of
Global_ID::Node_ID with the local identifier.
An entry in this table is created automatically when
the local identifier is associated with Global_ID and
Node_Id in the mplsTunnelExtNodeConfigTable.
Note: Each entry in this table should have a unique
Global_ID and Node_ID combination."
INDEX { mplsTunnelExtNodeIpMapGlobalId,
mplsTunnelExtNodeIpMapNodeId
}
::= { mplsTunnelExtNodeIpMapTable 1 }
MplsTunnelExtNodeIpMapEntry ::= SEQUENCE {
mplsTunnelExtNodeIpMapGlobalId MplsGlobalId,
mplsTunnelExtNodeIpMapNodeId MplsNodeId,
mplsTunnelExtNodeIpMapLocalId MplsExtendedTunnelId
}
mplsTunnelExtNodeIpMapGlobalId OBJECT-TYPE
SYNTAX MplsGlobalId
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object indicates the Global_ID."
::= { mplsTunnelExtNodeIpMapEntry 1 }
mplsTunnelExtNodeIpMapNodeId OBJECT-TYPE SYNTAX MplsNodeId MAX-ACCESS not-accessible STATUS current
DESCRIPTION
"This object indicates the Node_ID within the
operator."
::= { mplsTunnelExtNodeIpMapEntry 2 }
mplsTunnelExtNodeIpMapLocalId OBJECT-TYPE
SYNTAX MplsExtendedTunnelId
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an IP-compatible local identifier
that is defined in mplsTunnelExtNodeConfigTable."
::= { mplsTunnelExtNodeIpMapEntry 3 }
-- End MPLS Transport Profile Node IP compatible table
-- Start of MPLS Transport Profile Node ICC based table
mplsTunnelExtNodeIccMapTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsTunnelExtNodeIccMapEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This read-only table allows the operator to retrieve
the local identifier for a given ICC_Operator_ID::Node_ID
in an ICC operator environment.
This table MAY be used in on-demand and/or proactive
OAM operations to get the Ingress/Egress LSR
identifier (local identifier) from Src-ICC
or Dst-ICC. The Ingress and Egress LSR
identifiers are used to retrieve the tunnel entry.
This table returns nothing when the associated entry
is not defined in mplsTunnelExtNodeConfigTable."
::= { mplsTeExtObjects 4 }
mplsTunnelExtNodeIccMapEntry OBJECT-TYPE
SYNTAX MplsTunnelExtNodeIccMapEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents a mapping of
ICC_Operator_ID::Node_ID with the local identifier.
An entry in this table is created automatically when
the local identifier is associated with
ICC_Operator_ID::Node_ID in
the mplsTunnelExtNodeConfigTable."
INDEX { mplsTunnelExtNodeIccMapCcId,
mplsTunnelExtNodeIccMapIccId,
mplsTunnelExtNodeIccMapNodeId }
::= { mplsTunnelExtNodeIccMapTable 1 }
MplsTunnelExtNodeIccMapEntry ::= SEQUENCE {
mplsTunnelExtNodeIccMapCcId MplsCcId,
mplsTunnelExtNodeIccMapIccId MplsIccId,
mplsTunnelExtNodeIccMapNodeId MplsNodeId,
mplsTunnelExtNodeIccMapLocalId MplsExtendedTunnelId
}
mplsTunnelExtNodeIccMapCcId OBJECT-TYPE
SYNTAX MplsCcId
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object allows the operator or service provider to
configure a unique MPLS-TP ITU-T Country Code (CC)
either for Ingress or Egress LSR ID.
The CC is a string of two alphabetic characters
represented with uppercase letters (i.e., A-Z)."
::= { mplsTunnelExtNodeIccMapEntry 1 }
mplsTunnelExtNodeIccMapIccId OBJECT-TYPE
SYNTAX MplsIccId
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object allows the operator or service provider
to configure a unique MPLS-TP ITU-T Carrier
Code (ICC) either for Ingress or Egress LSR ID.
The ICC is a string of one to six characters, each
character being either alphabetic (i.e., A-Z) or
numeric (i.e., 0-9) characters. Alphabetic characters
in the ICC should be represented with uppercase
letters."
::= { mplsTunnelExtNodeIccMapEntry 2 }
mplsTunnelExtNodeIccMapNodeId OBJECT-TYPE
SYNTAX MplsNodeId
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object indicates the Node_ID within the
ICC-based operator."
::= { mplsTunnelExtNodeIccMapEntry 3}
mplsTunnelExtNodeIccMapLocalId OBJECT-TYPE
SYNTAX MplsExtendedTunnelId
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an ICC-based local identifier
that is defined in mplsTunnelExtNodeConfigTable."
::= { mplsTunnelExtNodeIccMapEntry 4 }
-- End MPLS Transport Profile Node ICC-based table
-- Start of MPLS Tunnel table extension
mplsTunnelExtTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsTunnelExtEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table represents extensions to mplsTunnelTable
in order to support MPLS-TP Tunnels.
As per MPLS-TP Identifiers (RFC 6370), LSP_ID for IP-based co-routed bidirectional tunnel:
A1-{Global_ID::Node_ID::Tunnel_Num}::Z9-{Global_ID::
Node_ID::Tunnel_Num}::LSP_Num
LSP_ID for IP based associated bidirectional tunnel:
A1-{Global_ID::Node_ID::Tunnel_Num::LSP_Num}::
Z9-{Global_ID::Node_ID::Tunnel_Num::LSP_Num}
mplsTunnelTable is reused for forming the LSP_ID
as follows:
Source Tunnel_Num is mapped with mplsTunnelIndex,
Source Node_ID is mapped with
mplsTunnelIngressLSRId, Destination Node_ID is
mapped with mplsTunnelEgressLSRId, and LSP_Num is mapped with
mplsTunnelInstance.
Source Global_ID::Node_ID and/or ICC_Operator_ID::Node_ID and
Destination Global_ID::Node_ID and/or ICC_Operator_ID::Node-ID
are maintained in the mplsTunnelExtNodeConfigTable.
mplsTunnelExtNodeConfigLocalId is used to create an entry
in mplsTunnelTable."
REFERENCE
"MPLS Transport Profile (MPLS-TP) Identifiers, RFC 6370."
::= { mplsTeExtObjects 5 }
mplsTunnelExtEntry OBJECT-TYPE
SYNTAX MplsTunnelExtEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents additional MPLS-TP-
specific tunnel configurations."
INDEX {
mplsTunnelIndex,
mplsTunnelInstance,
mplsTunnelIngressLSRId,
mplsTunnelEgressLSRId
}
::= { mplsTunnelExtTable 1 }
MplsTunnelExtEntry ::= SEQUENCE {
mplsTunnelExtOppositeDirPtr RowPointer,
mplsTunnelExtOppositeDirTnlValid TruthValue,
mplsTunnelExtDestTnlIndex MplsTunnelIndex,
mplsTunnelExtDestTnlLspIndex MplsTunnelInstanceIndex,
mplsTunnelExtDestTnlValid TruthValue,
mplsTunnelExtIngressLSRLocalIdValid TruthValue,
mplsTunnelExtEgressLSRLocalIdValid TruthValue
}
mplsTunnelExtOppositeDirPtr OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object points to the opposite-direction tunnel entry."
::= { mplsTunnelExtEntry 1 }
mplsTunnelExtOppositeDirTnlValid OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Denotes whether or not this tunnel uses
mplsTunnelExtOppositeDirPtr for identifying the opposite-
direction tunnel information. Note that if this variable
is set to true, then the mplsTunnelExtOppositeDirPtr should
point to the first accessible row of the valid opposite-
direction tunnel."
DEFVAL { false }
::= { mplsTunnelExtEntry 2 }
mplsTunnelExtDestTnlIndex OBJECT-TYPE
SYNTAX MplsTunnelIndex
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object is applicable only for the bidirectional
tunnel that has the forward and reverse LSPs in the
different tunnel entries.
The values of this object and the
mplsTunnelExtDestTnlLspIndex object together can be used
to identify an opposite-direction LSP, i.e., if the
mplsTunnelIndex and mplsTunnelInstance hold the value
for forward LSP, this object and
mplsTunnelExtDestTnlLspIndex can be used to retrieve
the reverse-direction LSP and vice versa.
This object and mplsTunnelExtDestTnlLspIndex values
provide the first two indices of tunnel entry, and
the remaining indices can be derived as follows:
the Ingress and Egress Identifiers should be
swapped in order to index the other direction tunnel."
::= { mplsTunnelExtEntry 3 }
mplsTunnelExtDestTnlLspIndex OBJECT-TYPE
SYNTAX MplsTunnelInstanceIndex
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object is applicable only for the bidirectional
tunnel that has the forward and reverse LSPs in the
different tunnel entries. This object holds
the instance index of the opposite-direction tunnel."
::= { mplsTunnelExtEntry 4 }
mplsTunnelExtDestTnlValid OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Denotes whether or not this tunnel uses
mplsTunnelExtDestTnlIndex and
mplsTunnelExtDestTnlLspIndex for identifying
the opposite-direction tunnel information. Note that if
this variable is set to true, then the
mplsTunnelExtDestTnlIndex and
mplsTunnelExtDestTnlLspIndex objects should have
the valid opposite-direction tunnel indices."
DEFVAL { false }
::= { mplsTunnelExtEntry 5 }
mplsTunnelExtIngressLSRLocalIdValid OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object denotes whether the mplsTunnelIngressLSRId
contains the local value that is used to reference
the complete Ingress Global_ID::Node_ID or ICC_Operator_ID
from the mplsTunnelExtNodeConfigTable.
If this object is set to FALSE, mplsTunnelExtNodeConfigTable
will not contain an entry to reference the local identifier
with Global_ID::Node_ID or ICC_Operator_ID::Node_ID value.
This object is set to FALSE for legacy implementations like
MPLS TE tunnels where mplsTunnelIngressId itself provides
the complete Ingress LSR ID."
REFERENCE
"MPLS-TE-STD-MIB (RFC 3812), Section 11.
mplsTunnelIngressLSRId object in mplsTunnelTable."
DEFVAL { false }
::= { mplsTunnelExtEntry 6 }
mplsTunnelExtEgressLSRLocalIdValid OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object denotes whether the mplsTunnelEgressLSRId
contains the local value, which is used to reference
the complete Egress Global_ID::Node_ID or
ICC_Operator_ID::Node_ID from
the mplsTunnelExtNodeConfigTable.
If this object is set to FALSE, mplsTunnelExtNodeConfigTable
will not contain an entry to reference the local identifier
with Global_ID::Node_ID or ICC_Operator_ID::Node_ID value.
This object is set to FALSE for legacy implementations like
MPLS TE tunnels where mplsTunnelEgressId itself provides
the complete Egress LSR ID."
REFERENCE
"MPLS-TE-STD-MIB (RFC 3812), Section 11.
mplsTunnelEgressLSRId object in mplsTunnelTable."
DEFVAL { false }
::= { mplsTunnelExtEntry 7 }
-- End of MPLS Tunnel table extension
-- Module compliance.
mplsTeExtCompliances
OBJECT IDENTIFIER ::= { mplsTeExtConformance 1 }
mplsTeExtGroups
OBJECT IDENTIFIER ::= { mplsTeExtConformance 2 }
-- Compliance requirement for fully compliant implementations.
mplsTeExtModuleFullCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for agents that provide full
support the MPLS-TE-EXT-STD-MIB module."
MODULE -- this module
-- The mandatory group has to be implemented by all
-- LSRs that originate/terminate MPLS-TP Tunnels.
-- In addition, depending on the type of tunnels
-- supported, other groups become mandatory as
-- explained below.
MANDATORY-GROUPS {
mplsTunnelExtGroup
}
GROUP mplsTunnelExtIpOperatorGroup
DESCRIPTION
"This group is mandatory for devices that support
configuration of IP-based identifier tunnels."
GROUP mplsTunnelExtIccOperatorGroup
DESCRIPTION
"This group is mandatory for devices that support
configuration of ICC based tunnels."
::= { mplsTeExtCompliances 1 }
-- Compliance requirement for read-only implementations.
mplsTeExtModuleReadOnlyCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for agents that only provide
read-only support for the MPLS-TE-EXT-STD-MIB module."
MODULE -- this module
MANDATORY-GROUPS {
mplsTunnelExtGroup
}
GROUP mplsTunnelExtIpOperatorGroup DESCRIPTION
"This group is mandatory for devices that support
configuration of IP-based identifier tunnels."
GROUP mplsTunnelExtIccOperatorGroup DESCRIPTION
"This group is mandatory for devices that support
configuration of ICC-based tunnels."
-- mplsTunnelExtTable
OBJECT mplsTunnelExtOppositeDirPtr MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtOppositeDirTnlValid MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtDestTnlIndex MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtDestTnlLspIndex MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtDestTnlValid MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtIngressLSRLocalIdValid MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtEgressLSRLocalIdValid MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtNodeConfigGlobalId MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtNodeConfigNodeId MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtNodeConfigStorageType MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtNodeConfigRowStatus SYNTAX RowStatus { active(1) } MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtNodeConfigCcId MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtNodeConfigIccId MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
OBJECT mplsTunnelExtNodeConfigIccValid MIN-ACCESS read-only DESCRIPTION
"Write access is not required."
::= { mplsTeExtCompliances 2 }
-- Units of conformance.
mplsTunnelExtGroup OBJECT-GROUP
OBJECTS {
mplsTunnelExtOppositeDirPtr,
mplsTunnelExtOppositeDirTnlValid,
mplsTunnelExtDestTnlIndex,
mplsTunnelExtDestTnlLspIndex,
mplsTunnelExtDestTnlValid,
mplsTunnelExtIngressLSRLocalIdValid,
mplsTunnelExtEgressLSRLocalIdValid
}
STATUS current
DESCRIPTION
"Necessary, but not sufficient, set of objects to
implement tunnels. In addition, depending on the
operating environment, the following groups are
mandatory."
::= { mplsTeExtGroups 1 }
mplsTunnelExtIpOperatorGroup OBJECT-GROUP
OBJECTS { mplsTunnelExtNodeConfigLocalIdNext,
mplsTunnelExtNodeConfigGlobalId,
mplsTunnelExtNodeConfigNodeId,
mplsTunnelExtNodeIpMapLocalId,
mplsTunnelExtNodeConfigStorageType,
mplsTunnelExtNodeConfigRowStatus
}
STATUS current
DESCRIPTION
"Object(s) needed to implement IP-compatible tunnels."
::= { mplsTeExtGroups 2 }
mplsTunnelExtIccOperatorGroup OBJECT-GROUP
OBJECTS { mplsTunnelExtNodeConfigLocalIdNext,
mplsTunnelExtNodeConfigCcId,
mplsTunnelExtNodeConfigIccId,
mplsTunnelExtNodeConfigNodeId,
mplsTunnelExtNodeConfigIccValid,
mplsTunnelExtNodeIccMapLocalId,
mplsTunnelExtNodeConfigStorageType,
mplsTunnelExtNodeConfigRowStatus
}
STATUS current
DESCRIPTION
"Object(s) needed to implement ICC-based tunnels."
::= { mplsTeExtGroups 3 }
-- MPLS-TE-EXT-STD-MIB module ends END
14. Security Considerations
This document follows the security considerations mentioned in Section 12 of RFC3812. These security considerations are also applicable to the MIB objects and tables defined in this document, which are identified as below.
- The common objects mplsIdGlobalId, mplsIdNodeId, mplsIdCc, and
mplsIdIcc are used to define the identity of an MPLS-TP node for
OAM purposes. If write-access is allowed to these objects it
offers the possibility for incorrect values to be entered that
will confuse the information returned by OAM functions and
possibly prevent OAM from operating correctly. Furthermore,
there is the possibility of inducing one node to impersonate
another with confusing results.
- mplsTunnelExtNodeConfigTable, mplsTunnelExtTable and
mplsXCExtTable collectively contain objects to provision MPLS-TP
Tunnels, tunnel hops, and tunnel resources.
Some of the readable objects in this MIB module (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:
- mplsTunnelExtNodeConfigTable, mplsTunnelExtTable, and
mplsXCExtTable collectively show the characteristics of the
MPLS-TP tunnel network topology. If an Administrator does not
want to reveal this information, then these tables 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.
15. IANA Considerations
As described in RFC4221 and RFC6639, and as requested in the MPLS-TC-STD-MIB RFC3811, MPLS-related Standards Track MIB modules should be rooted under the mplsStdMIB subtree. There are four MPLS MIB modules contained in this document; each of the following subsections lists a new assignment made by IANA under the mplsStdMIB subtree. New assignments can only be made via a Standards Action as specified in RFC5226.
15.1. IANA Considerations for MPLS-TC-EXT-STD-MIB
IANA has assigned the OID { mplsStdMIB 17 } to the MPLS-TC-EXT-STD-MIB module specified in this document.
15.2. IANA Considerations for MPLS-ID-STD-MIB
IANA has assigned the OID { mplsStdMIB 18 } to the MPLS-ID-STD-MIB module specified in this document.
15.3. IANA Considerations for MPLS-LSR-EXT-STD-MIB
IANA has assigned the OID { mplsStdMIB 19 } to the MPLS-LSR-EXT-STD-MIB module specified in this document.
15.4. IANA Considerations for MPLS-TE-EXT-STD-MIB
IANA has assigned the OID { mplsStdMIB 20 } to the MPLS-TE-EXT-STD-MIB module specified in this document.
16. References
16.1. Normative References
RFC2119 Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, 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, April 1999,
<http://www.rfc-editor.org/info/rfc2578>.
RFC2579 McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD
58, RFC 2579, 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, April 1999,
<http://www.rfc-editor.org/info/rfc2580>.
RFC3031 Rosen, E., Viswanathan, A., and R. Callon, "Multiprotocol
Label Switching Architecture", RFC 3031, January 2001, <http://www.rfc-editor.org/info/rfc3031>.
RFC3289 Baker, F., Chan, K., and A. Smith, "Management Information
Base for the Differentiated Services Architecture", RFC
3289, May 2002, <http://www.rfc-editor.org/info/rfc3289>.
RFC3811 Nadeau, T., Ed., and J. Cucchiara, Ed., "Definitions of
Textual Conventions (TCs) for Multiprotocol Label
Switching (MPLS) Management", RFC 3811, June 2004,
<http://www.rfc-editor.org/info/rfc3811>.
RFC3812 Srinivasan, C., Viswanathan, A., and T. Nadeau,
"Multiprotocol Label Switching (MPLS) Traffic Engineering
(TE) Management Information Base (MIB)", RFC 3812, June
2004, <http://www.rfc-editor.org/info/rfc3812>.
RFC3813 Srinivasan, C., Viswanathan, A., and T. Nadeau,
"Multiprotocol Label Switching (MPLS) Label Switching
Router (LSR) Management Information Base (MIB)", RFC 3813,
June 2004, <http://www.rfc-editor.org/info/rfc3813>.
RFC4802 Nadeau, T., Ed., and A. Farrel, Ed., "Generalized
Multiprotocol Label Switching (GMPLS) Traffic Engineering
Management Information Base", RFC 4802, February 2007,
<http://www.rfc-editor.org/info/rfc4802>.
RFC6370 Bocci, M., Swallow, G., and E. Gray, "MPLS Transport
Profile (MPLS-TP) Identifiers", RFC 6370, September 2011, <http://www.rfc-editor.org/info/rfc6370>.
RFC6923 Winter, R., Gray, E., van Helvoort, H., and M. Betts,
"MPLS Transport Profile (MPLS-TP) Identifiers Following
ITU-T Conventions", RFC 6923, May 2013,
<http://www.rfc-editor.org/info/rfc6923>.
[T.50] ITU-T, "International Reference Alphabet (IRA) (Formerly
International Alphabet No. 5 or IA5) - Information
technology - 7-bit coded character set for information
exchange", ITU-T Recommendation T.50, September 1992.
16.2. 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,
<http://www.rfc-editor.org/info/rfc3410>.
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, December 2002,
<http://www.rfc-editor.org/info/rfc3414>.
RFC3826 Blumenthal, U., Maino, F., and K. McCloghrie, "The
Advanced Encryption Standard (AES) Cipher Algorithm in the
SNMP User-based Security Model", RFC 3826, June 2004,
<http://www.rfc-editor.org/info/rfc3826>.
RFC4221 Nadeau, T., Srinivasan, C., and A. Farrel, "Multiprotocol
Label Switching (MPLS) Management Overview", RFC 4221, November 2005, <http://www.rfc-editor.org/info/rfc4221>.
RFC5226 Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226, May 2008, <http://www.rfc-editor.org/info/rfc5226>.
RFC5591 Harrington, D. and W. Hardaker, "Transport Security Model
for the Simple Network Management Protocol (SNMP)", STD
78, RFC 5591, June 2009,
<http://www.rfc-editor.org/info/rfc5591>.
RFC5592 Harrington, D., Salowey, J., and W. Hardaker, "Secure
Shell Transport Model for the Simple Network Management
Protocol (SNMP)", RFC 5592, June 2009,
<http://www.rfc-editor.org/info/rfc5592>.
RFC5654 Niven-Jenkins, B., Ed., Brungard, D., Ed., Betts, M., Ed.,
Sprecher, N., and S. Ueno, "Requirements of an MPLS
Transport Profile", RFC 5654, September 2009,
<http://www.rfc-editor.org/info/rfc5654>.
RFC6353 Hardaker, W., "Transport Layer Security (TLS) Transport
Model for the Simple Network Management Protocol (SNMP)",
STD 78, RFC 6353, July 2011,
<http://www.rfc-editor.org/info/rfc6353>.
RFC6639 King, D., Ed., and M. Venkatesan, Ed., "Multiprotocol
Label Switching Transport Profile (MPLS-TP) MIB-Based
Management Overview", RFC 6639, June 2012,
<http://www.rfc-editor.org/info/rfc6639>.
Acknowledgments
The authors would like to thank Francesco Fondelli, Josh Littlefield, Agrahara Kiran Koushik, Metrri Jain, Muly Ilan, Randy Presuhn, Elwyn Davies, Tom Taylor, and Pete Resnick for their valuable reviews and comments. A special thanks to Joan Cucchiara and Adrian Farrel for really getting the MIB modules into shape.
Authors' Addresses
Venkatesan Mahalingam Dell Inc. 5450 Great America Parkway, Santa Clara, CA 95054 United States EMail: [email protected]
Sam Aldrin Huawei Technologies 2330 Central Express Way, Santa Clara, CA 95051 United States EMail: [email protected]
Thomas D. Nadeau Brocade EMail: [email protected]
Kannan KV Sampath Redeem India EMail: [email protected]
