Request for Comments: 6445
Category: Standards Track
ISSN: 2070-1721
CA Technologies
K. Koushik, Ed.
Cisco Systems, Inc.
R. Cetin, Ed.
Alcatel
November 2011
Multiprotocol Label Switching (MPLS) Traffic Engineering
Management Information Base for Fast Reroute
Abstract
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This memo defines a portion of the Management Information Base for use with network management protocols in the Internet community. In particular, it describes managed objects used to support two fast reroute (FRR) methods for Multiprotocol Label Switching (MPLS)-based traffic engineering (TE). The two methods are the one-to-one backup method and the facility backup method.
Status of This Memo
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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/rfc6445.
Copyright Notice
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Copyright © 2011 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.
This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English.
Table of Contents
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1. Introduction ....................................................4 1.1. Conventions Used in This Document ..........................4 2. Terminology .....................................................4 3. The Internet-Standard Management Framework ......................4 4. Overview of the MIB Modules .....................................4 4.1. MPLS-FRR-GENERAL-STD-MIB ...................................5 4.1.1. mplsFrrConstraintsTable .............................5 4.1.2. mplsFrrTunnelARHopTable .............................5 4.1.3. Example of Relationship between Various Tables of MPLS-FRR-GENERAL-STD-MIB ............................6 4.2. MPLS-FRR-ONE2ONE-STD-MIB ...................................6 4.2.1. mplsFrrOne2OnePlrTable ..............................7 4.2.2. mplsFrrOne2OneDetourTable ...........................7 4.2.3. Example of Relationship between mplsFrrOne2OnePlrTable, mplsFrrOne2OneDetourTable, and mplsTunnelTable..................................8 4.3. MPLS-FRR-FACILITY-STD-MIB .................................11 4.3.1. mplsFrrFacilityDBTable .............................11 4.3.2. Example of Relationship between Various Tables of MPLS-FRR-FACILITY-STD-MIB ..........................12 5. Handling IPv6 Tunnels ..........................................14 6. MIB Module Definitions .........................................15 6.1. MPLS-FRR-GENERAL-STD-MIB Module Definitions ...............15 6.2. MPLS-FRR-ONE2ONE-STD-MIB Module Definitions ...............28 6.3. MPLS-FRR-FACILITY-STD-MIB Module Definitions ..............38 7. Security Considerations ........................................49 8. IANA Considerations ............................................50 8.1. IANA Considerations for MPLS-FRR-GENERAL-STD-MIB ..........51 8.2. IANA Considerations for MPLS-FRR-ONE2ONE-STD-MIB ..........51 8.3. IANA Considerations for MPLS-FRR-FACILITY-STD-MIB .........51 9. Acknowledgments ................................................51 10. References ....................................................51 10.1. Normative References .....................................51 10.2. Informative References ...................................52 11. Contributors ..................................................52
1. Introduction
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This memo defines a portion of the Management Information Base (MIB) containing objects used to manage Multiprotocol Label Switching (MPLS)-based fast rerouting features on MPLS Label Switching Routers (LSRs) as defined in [RFC4090]. The MIB modules defined in this document should be used in conjunction with [RFC3811], [RFC3812], and [RFC3813].
1.1. Conventions Used in This Document
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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 RFC 2119 [RFC2119].
2. Terminology
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This document uses terminology from "Multiprotocol Label Switching Architecture" [RFC3031] and from "Fast Reroute Extensions to RSVP-TE for LSP Tunnels" [RFC4090].
3. The Internet-Standard Management Framework
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For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of [RFC3410].
Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB module 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 MIB modules that are compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580].
4. Overview of the MIB Modules
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[RFC4090] stipulates two different approaches to implementing MPLS TE fast reroute: one-to-one backup and facility backup.
We define three MIB modules to represent the respective components: general, one-to-one backup, and facility backup.
They are:
- MPLS-FRR-GENERAL-STD-MIB: Contains objects that apply to any MPLS LSR implementing MPLS TE fast-reroute functionality. - MPLS-FRR-ONE2ONE-STD-MIB: Contains objects that apply to the one-to-one backup method. - MPLS-FRR-FACILITY-STD-MIB: Contains objects that apply to the facility backup method.Although [RFC4090] specifies that a node is able to support both fast-reroute methods simultaneously, common practice has shown that operators choose to configure either the one-to-one backup method or the facility backup method at any given time. So, by dividing the MIB modules into three, we allow the developers to choose the MIB modules they want to implement, depending on the method supported on that node.
4.1. MPLS-FRR-GENERAL-STD-MIB
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This MIB module MUST be implemented if either of the fast-reroute methods is implemented.
4.1.1. mplsFrrConstraintsTable
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This table contains objects that apply to all LSRs implementing MPLS TE fast-reroute functions. In particular, this table defines fast- reroute constraints, such as bandwidth, for a tunnel instance to be protected by using backup Label Switched Paths (LSPs) (detour LSPs or bypass tunnels).
This table MUST be implemented at the ingress node of the protected TE tunnel instance to configure backup LSP setup constraints.
4.1.2. mplsFrrTunnelARHopTable
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This table extends mplsTunnelARHopTable (defined in the MPLS-TE-STD-MIB [RFC3812]) with fast-reroute objects that specify the local protection type or types of availability, as well as what type or types are actually in use for each tunnel hop traversed by a protected TE tunnel.
4.1.3. Example of Relationship between Various Tables of
MPLS-FRR-GENERAL-STD-MIB
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(R1)----(R2)----(R3)----(R4)---(R5) \ \ \ / (R6)---(R7)------(R8) Protected LSP: [R1->R2->R3->R4->R5] R1's Backup: [R1->R6->R7->R8->R3]In the above topology, the various tables on R1 will be populated as indicated below.
mplsFrrGeneralConstraintsTable
{mplsFrrGeneralConstraintsIfIndexOrZero = 10,-- interface to protect mplsFrrGeneralConstraintsTunnelIndex = 1, -- protecting tunnel mplsFrrGeneralConstraintsTunnelInstance = 0, -- use any instance mplsFrrGeneralConstraintsProtectionType = 1, -- linkProtection mplsFrrGeneralConstraintsSetupPrio = 0, mplsFrrGeneralConstraintsHoldingPrio = 0, mplsFrrGeneralConstraintsInclAnyAffinity = 0, mplsFrrGeneralConstraintsInclAllAffinity = 0, mplsFrrGeneralConstraintsExclAnyAffinity = 0, mplsFrrGeneralConstraintsHopLimit = 0, mplsFrrGeneralConstraintsBandwidth = 0, -- best effort mplsFrrGeneralConstraintsStorageType = 2, -- volatile mplsFrrGeneralConstraintsRowStatus = 1, -- active };mplsFrrGeneralTunnelARHopEntry
{mplsFrrGeneralTunnelARHopSessionAttributeFlags = 5, -- sestyleDesired | localProtectionDesired mplsFrrGeneralTunnelARHopRROSubObjectFlags = 2 -- localProtectionInUse };
4.2. MPLS-FRR-ONE2ONE-STD-MIB
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This MIB module MUST be implemented if the one-to-one backup fast- reroute method is implemented.
4.2.1. mplsFrrOne2OnePlrTable
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The mplsFrrOne2OnePlrTable contains information about Points of Local Repair (PLRs) that initiated detour LSPs to protect tunnel instances. This table MUST be supported for LSRs implementing the one-to-one backup method. In these cases, the detour LSPs are reflected in the mplsFrrOne2OneDetourTable.
4.2.2. mplsFrrOne2OneDetourTable
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The mplsFrrOne2OneDetourTable shows the detour LSPs in each node (ingress, transit, and egress nodes). An entry in this table represents a detour LSP.
Each detour is identified by the following indexes:
- mplsTunnelIndex [RFC3812]: set to the Tunnel ID of an LSP protected by a detour.
- mplsTunnelInstance [RFC3812]: consists of two parts:
1) the higher 16 bits: - protected TE tunnel instance - uniquely identifies a protected LSP within a tunnel. 2) the lower 16 bits: - detour instance - uniquely identifies a detour LSP of a protected TE tunnel instance. Multiple detours of the same protected LSP may go through the same node. In this case, the higher 16 bits of the tunnel instance object is used as a detour instance. - ingress node's LSR ID (mplsFrrOne2OnePlrTunnelIngressLSRId): set to the ingress node of an LSP protected by a detour.- egress node's LSR ID (mplsFrrOne2OnePlrTunnelEgressLSRId): set to the egress node of an LSP protected by a detour.
A detour LSP is also considered as an instance of a protected TE tunnel. Therefore, each detour LSP SHOULD have an entry in the mplsTunnelTable (defined in the MPLS-TE-STD-MIB [RFC3812]).
The mplsTunnelTable entries are indexed using mplsTunnelIndex, mplsTunnelInstance, mplsTunnelIngressLSRId, and mplsTunnelEgressLSRId.
Entries where the higher 16 bits of mplsTunnelInstance are set to zero represent detour TE tunnel instances. All other values of the higher 16 bits represent protected tunnel instances.
This table MUST be supported if the one-to-one backup method is used.
4.2.3. Example of Relationship between mplsFrrOne2OnePlrTable,
mplsFrrOne2OneDetourTable, and mplsTunnelTable
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This section contains an example depicting the interrelationship between mplsFrrOne2OnePlrTable, mplsFrrOne2OneDetourTable, and mplsTunnelTable.
(R1)----(R2)----(R3)----(R4)---(R5) \ \ \ / (R6)---(R7)------(R8) Protected LSP: [R1->R2->R3->R4->R5] R1's Backup: [R1->R6->R7->R8->R3]In the above topology, the various tables will be populated as indicated below.
In mplsFrrOne2OnePlrTable:
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{
mplsFrrOne2OnePlrTunnelIndex = 1, mplsFrrOne2OnePlrTunnelDetourInstance = 6553601, -- -- (100 << 16 | 1) = 6553601 -- 100 is the tunnel instance of the protected tunnel. -- mplsFrrOne2OnePlrTunnelIngressLSRId = 192.0.2.1, -- R1 mplsFrrOne2OnePlrTunnelEgressLSRId = 192.0.2.5, -- R5 mplsFrrOne2OnePlrId = 192.0.2.1, -- R1 is PLR mplsFrrOne2OnePlrSenderAddrType = ipv4(1), mplsFrrOne2OnePlrSenderAddr = "192.0.2.1", -- R1 mplsFrrOne2OnePlrAvoidNodeAddrType = ipv4(1), mplsFrrOne2OnePlrAvoidNodeAddr = "192.0.2.2", -- R1-R2 (Avoid) }-
In mplsFrrOne2OneDetourTable:
{
mplsFrrOne2OnePlrTunnelIndex = 1, mplsFrrOne2OnePlrTunnelDetourInstance = 6553601, -- -- (100 << 16 | 1) == 6553601 -- -- 1 is mplsTunnelInstance for the detour LSP -- from mplsTunnelTable. Marked by AAA below. -- Shift 16 to put this into the high-order bits -- -- 100 is mplsTunnelInstance for the protected tunnel -- from the mplsTunnelTable. Marked by BBB below. -- Need to OR the index value into low-order bits)-
-- To get all detour LSPs of a protected tunnel (of instance 100) -- we could do an snmpwalk of the mplsFrrOne2OneDetourEntry -- where mplsFrrOne2OnePlrTunnelIndex == 1 -- mplsFrrOne2OnePlrTunnelDetourInstance == 6553600
-- The first value would be: -- mplsFrrOne2OneDetourActive.1.6553601 mplsFrrOne2OnePlrTunnelIngressLSRId = 192.0.2.1, -- R1 mplsFrrOne2OnePlrTunnelEgressLSRId = 192.0.2.3, -- R3 mplsFrrOne2OneDetourActive = false(2), mplsFrrOne2OneDetourMergedStatus = notMerged(1), mplsFrrOne2OneDetourMergedDetourInst = 0, }-
In mplsTunnelTable(protected tunnel entry):
{
mplsTunnelIndex = 1, mplsTunnelInstance = 100,-- Indicating protected tunnel -- AAA mplsTunnelIngressLSRId = 192.0.2.1, mplsTunnelEgressLSRId = 192.0.2.5, mplsTunnelName = "R1-R5", mplsTunnelDescr = "R1-R5", mplsTunnelIsIf = true(1), mplsTunnelXCPointer = 0.0, mplsTunnelSignallingProto = none(1), mplsTunnelSetupPrio = 0, mplsTunnelHoldingPrio = 0, mplsTunnelSessionAttributes = 0, mplsTunnelLocalProtectInUse = true(1), mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.5, mplsTunnelInstancePriority = 1, mplsTunnelHopTableIndex = 1, mplsTunnelIncludeAnyAffinity = 0, mplsTunnelIncludeAllAffinity = 0, mplsTunnelExcludeAnyAffinity = 0, mplsTunnelPathInUse = 1, mplsTunnelRole = head(1), }-
In mplsTunnelTable (detour LSP entry):
{
mplsTunnelIndex = 1, mplsTunnelInstance = 1, -- Indicating detour LSP (higher 16 bits) -- BBB mplsTunnelIngressLSRId = 192.0.2.1, mplsTunnelEgressLSRId = 192.0.2.3, mplsTunnelName = "R1-R3", mplsTunnelDescr = "R1-R3", mplsTunnelIsIf = true(1), mplsTunnelXCPointer = 0.0, mplsTunnelSignallingProto = none(1), mplsTunnelSetupPrio = 0, mplsTunnelHoldingPrio = 0, mplsTunnelSessionAttributes = 0, mplsTunnelLocalProtectInUse = false(0), mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.6, mplsTunnelInstancePriority = 1, mplsTunnelHopTableIndex = 1, mplsTunnelIncludeAnyAffinity = 0, mplsTunnelIncludeAllAffinity = 0, mplsTunnelExcludeAnyAffinity = 0, mplsTunnelPathInUse = 1, mplsTunnelRole = head(1), } -
4.3. MPLS-FRR-FACILITY-STD-MIB
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This MIB module MUST be implemented if the facility backup fast-reroute method is implemented.
4.3.1. mplsFrrFacilityDBTable
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The mplsFrrFacilityDBTable provides information about the fast- reroute database for facility-based fast reroute.
An entry is created in this table for each tunnel being protected by a backup tunnel. Backup tunnels are defined to protect the tunnels traversing an interface.
The protecting tunnel will exist on the PLR as per [RFC4090]. Protected tunnels are the LSPs that traverse the protected link.
4.3.2. Example of Relationship between Various Tables of
MPLS-FRR-FACILITY-STD-MIB
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[R1]---[R2]----[R3]-----[R4]---[R5] \ / [R6]===[R7] Protected LSP 1 : [R1->R2->R3->R4->R5] Protecting Tunnel 999: [R2->R6->R7->R4] Facility Backup Technique -------------------------In the above topology, the following tables are populated at R2:
mplsFrrFacilityDBEntry
{ mplsFrrFacilityProtectedIfIndex = 10, mplsFrrFacilityProtectingTunnelIndex = 999, mplsFrrFacilityBackupTunnelIndex = 1, mplsFrrFacilityBackupTunnelInstance = 0, mplsFrrFacilityBackupTunnelIngressLSRId = 192.0.2.1 -- 192.0.2.1/24 mplsFrrFacilityBackupTunnelEgressLSRId = 192.0.2.2 -- 192.0.2.2/24 mplsFrrFacilityDBNumProtectingTunnelOnIf = 1, mplsFrrFacilityDBNumProtectedLspOnIf = 1, mplsFrrFacilityDBNumProtectedTunnels = 1, mplsFrrFacilityDBProtectingTunnelStatus = 1, -- active mplsFrrFacilityDBProtectingTunnelResvBw = 0, };-
-
In mplsTunnelTable (protecting tunnel entry):
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{ mplsTunnelIndex = 999, -- protecting tunnel index mplsTunnelInstance = 0, -- head mplsTunnelIngressLSRId = 192.0.2.2, mplsTunnelEgressLSRId = 192.0.2.4, mplsTunnelName = "R2-R4", mplsTunnelDescr = "R2-R4", mplsTunnelIsIf = true(1), mplsTunnelXCPointer = 0.0, mplsTunnelSignallingProto = none(1), mplsTunnelSetupPrio = 0, mplsTunnelHoldingPrio = 0, mplsTunnelSessionAttributes = 0, mplsTunnelLocalProtectInUse = false(1), mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.5, mplsTunnelInstancePriority = 1, mplsTunnelHopTableIndex = 1, mplsTunnelIncludeAnyAffinity = 0, mplsTunnelIncludeAllAffinity = 0, mplsTunnelExcludeAnyAffinity = 0, mplsTunnelPathInUse = 1, mplsTunnelRole = head(1), }-
-
In mplsTunnelTable (protected LSP):
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{ mplsTunnelIndex = 1, -- protected LSP tunnel index mplsTunnelInstance = 100, -- specific instance protected mplsTunnelIngressLSRId = 192.0.2.1, mplsTunnelEgressLSRId = 192.0.2.5, mplsTunnelName = "R1-R5", mplsTunnelDescr = "R1-R5", mplsTunnelIsIf = false(2), mplsTunnelXCPointer = 0.0, mplsTunnelSignallingProto = none(1), mplsTunnelSetupPrio = 0, mplsTunnelHoldingPrio = 0, mplsTunnelSessionAttributes = 0, mplsTunnelLocalProtectInUse = true(1), mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.6, mplsTunnelInstancePriority = 1, mplsTunnelHopTableIndex = 1, mplsTunnelIncludeAnyAffinity = 0, mplsTunnelIncludeAllAffinity = 0, mplsTunnelExcludeAnyAffinity = 0, mplsTunnelPathInUse = 1, mplsTunnelRole = transit(2), }
5. Handling IPv6 Tunnels
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As described in [RFC4990], in order to support IPv6 MPLS tunnels in the mplsTunnelTable [RFC3812], all LSRs in the network MUST have a 32-bit LSR ID that can be used to identify the LSR with the existing mplsTunnelIngressLSRId and mplsTunnelEgressLSRId objects, which are 32 bits long.
In this MIB, the following objects, which refer to ingress/egress LSRs, will therefore have the 32-bit LSR ID to support IPv6 tunnels:
- mplsFrrOne2OnePlrTunnelIngressLSRId and mplsFrrOne2OnePlrTunnelEgressLSRId objects of the mplsFrrOne2OnePlrTable
- mplsFrrOne2OnePlrTunnelIngressLSRId and mplsFrrOne2OnePlrTunnelEgressLSRId objects of the mplsFrrOne2OneDetourTable
- mplsFrrFacilityBackupTunnelIngressLSRId and mplsFrrFacilityBackupTunnelEgressLSRId objects of the mplsFrrFacilityDBTable
6. MIB Module Definitions
6.1. MPLS-FRR-GENERAL-STD-MIB Module Definitions
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-- Start of MPLS-FRR-GENERAL-STD-MIB MPLS-FRR-GENERAL-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, mib-2, Unsigned32, Counter32 FROM SNMPv2-SMI -- [RFC2578] MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF -- [RFC2580] RowStatus, StorageType FROM SNMPv2-TC -- [RFC2579] InterfaceIndexOrZero, ifGeneralInformationGroup, ifCounterDiscontinuityGroup FROM IF-MIB -- [RFC2863] MplsTunnelIndex, MplsTunnelInstanceIndex, MplsBitRate, MplsTunnelAffinity FROM MPLS-TC-STD-MIB -- [RFC3811] mplsTunnelGroup, mplsTunnelScalarGroup, mplsTunnelARHopListIndex, mplsTunnelARHopIndex FROM MPLS-TE-STD-MIB -- [RFC3812] ;mplsFrrGeneralMIB MODULE-IDENTITY
LAST-UPDATED "201111030000Z" -- 03 Nov 2011 00:00:00 GMT ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group" CONTACT-INFO " Riza Cetin Email: [email protected] Thomas D. Nadeau Email: [email protected] A S Kiran Koushik Email: [email protected] Stefaan De Cnodder Email: [email protected] Der-Hwa Gan Email: [email protected] "-
DESCRIPTION
-
"Copyright © 2011 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).
This MIB module contains generic object definitions for
MPLS Traffic Engineering Fast Reroute as defined in
RFC 4090."
-
-- Revision history.
REVISION "201111030000Z" -- 03 Nov 2011 00:00:00 GMT DESCRIPTION "Initial version. Published as RFC 6445." ::= { mib-2 202 } -- Top-level components of this MIB modulemplsFrrGeneralObjects
OBJECT IDENTIFIER ::= { mplsFrrGeneralMIB 1 }mplsFrrGeneralConformance
OBJECT IDENTIFIER ::= { mplsFrrGeneralMIB 2 } -- MPLS Fast-Reroute generic scalarsmplsFrrGeneralProtectionMethod OBJECT-TYPE
SYNTAX INTEGER { unknown(1), oneToOneBackup(2), facilityBackup(3) } MAX-ACCESS read-write STATUS current DESCRIPTION "Indicates which protection method is to be used for fast reroute on this device. Some devices may require a reboot if this variable is to take effect after being modified." ::= { mplsFrrGeneralObjects 1 }mplsFrrGeneralIngressTunnelInstances OBJECT-TYPE
SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of tunnel instances for either detour LSPs or bypass tunnels for which this LSR is the ingress." ::= { mplsFrrGeneralObjects 2 } -- -- General FRR Table section -- -- These tables apply to both types of FRR -- and should be implemented by all LSRs supporting -- FRR. -- -- MPLS Fast-Reroute Constraints tablemplsFrrGeneralConstraintsTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsFrrGeneralConstraintsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table shows detour LSP or bypass tunnel setup constraints." ::= { mplsFrrGeneralObjects 3 }mplsFrrGeneralConstraintsEntry OBJECT-TYPE
SYNTAX MplsFrrGeneralConstraintsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents detour LSP or bypass tunnel setup constraints for an interface or link to be protected by detour LSPs or a bypass tunnel.-
-
Once the LSP or tunnel instance to be protected is identified in the mplsTunnelTable, the corresponding mplsTunnelIfIndex value of that tunnel can be used to get the ifIndex of the underlying physical interface using the ifStackTable. That ifIndex of the underlying physical interface will be used as mplsFrrGeneralConstraintsIfIndexOrZero in this table to protect the LSPs or tunnel instances determined earlier.
It is recommended that ifIndex persistence be enabled across re-initializations. If persistence is not implemented, then the value of mplsFrrGeneralConstraintsIfIndexOrZero in this table cannot be guaranteed across restarts and all entries in this table MUST NOT be persistent, or the values of mplsFrrGeneralConstraintsIfIndexOrZero MUST be reconstructed on restart.
SNMP engines must only allow entries in this table
to be created for tunnel instances that require fast reroute as indicated by the presence of the FAST_REROUTE object in the signaling for the LSP in question.
-
An entry in this table can be created only if a
corresponding entry in mplsTunnelTable exists with the
same mplsTunnelIndex as mplsFrrGeneralConstraintsTunnelIndex.
-
-
-
Entries in this table are deleted when the corresponding entries in mplsTunnelTable are deleted.
It is recommended that entries in this table be persistent across reboots.
Entries indexed with mplsFrrGeneralConstraintsIfIndexOrZero and set to 0 apply to all interfaces on this device for which the FRR feature can operate.
If the mplsTunnelInstance object is set to a value of 0, it indicates that the mplsTunnelEntry contains a tunnel ingress. This is typically how configuration of this feature is performed on devices where the actual protection LSP used is left up to the protecting tunnel. However, in cases where static configuration is possible, any valid tunnel instance is possible; however, it is strongly RECOMMENDED that the instance index SHOULD use the following convention to identify backup LSPs:
- lower 16 bits : protected tunnel instance
- higher 16 bits: must be all zeros"
-
REFERENCE "Section 4.1 of RFC 4090 and Section 6.1 of RFC 3812." INDEX { mplsFrrGeneralConstraintsIfIndexOrZero, mplsFrrGeneralConstraintsTunnelIndex, mplsFrrGeneralConstraintsTunnelInstance } ::= { mplsFrrGeneralConstraintsTable 1 } MplsFrrGeneralConstraintsEntry ::= SEQUENCE { mplsFrrGeneralConstraintsIfIndexOrZero InterfaceIndexOrZero, mplsFrrGeneralConstraintsTunnelIndex MplsTunnelIndex, mplsFrrGeneralConstraintsTunnelInstance MplsTunnelInstanceIndex, mplsFrrGeneralConstraintsProtectionType INTEGER, mplsFrrGeneralConstraintsSetupPrio Unsigned32, mplsFrrGeneralConstraintsHoldingPrio Unsigned32, mplsFrrGeneralConstraintsInclAnyAffinity MplsTunnelAffinity, mplsFrrGeneralConstraintsInclAllAffinity MplsTunnelAffinity, mplsFrrGeneralConstraintsExclAnyAffinity MplsTunnelAffinity, mplsFrrGeneralConstraintsHopLimit Unsigned32, mplsFrrGeneralConstraintsBandwidth MplsBitRate, mplsFrrGeneralConstraintsStorageType StorageType, mplsFrrGeneralConstraintsRowStatus RowStatus }mplsFrrGeneralConstraintsIfIndexOrZero OBJECT-TYPE
SYNTAX InterfaceIndexOrZero MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies an interface that a fast-reroute protection tunnel is configured to potentially protect in the event of a fault. Entries with this index set to 0 indicate that the configured protection tunnel protects all interfaces on this device (i.e., node protection)." ::= { mplsFrrGeneralConstraintsEntry 1 }mplsFrrGeneralConstraintsTunnelIndex OBJECT-TYPE
SYNTAX MplsTunnelIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies a tunnel in the mplsTunnelTable that is configured to possibly protect the interface(s) specified by mplsFrrGeneralConstraintsIfIndexOrZero in the event of a fault." REFERENCE "mplsTunnelTable from RFC 3812." ::= { mplsFrrGeneralConstraintsEntry 2 }mplsFrrGeneralConstraintsTunnelInstance OBJECT-TYPE
SYNTAX MplsTunnelInstanceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies an existing instance of this tunnel for which fast reroute is requested. Note that a value of 0 indicates that the configuration points at a tunnel head (as specified in RFC 3812). This is typically how configuration of this feature is performed on devices where the actual protection LSP used is left up to the protecting tunnel. However, in cases where static configuration is possible, any valid tunnel instance is permissible. In these cases, it is recommended that the instance index follow the following convention so as to make identification of backup LSPs easier: - lower 16 bits : protected tunnel instance - higher 16 bits: must be all zeros" ::= { mplsFrrGeneralConstraintsEntry 3 }mplsFrrGeneralConstraintsProtectionType OBJECT-TYPE
SYNTAX INTEGER { linkProtection(1), nodeProtection(2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates type of the resource protection: -
linkProtection(1) indicates that this tunnel is
set up to protect a particular link's resources.
-
nodeProtection(2) indicates that this tunnel is set up to protect an entire node from failure." REFERENCE "Section 3 of RFC 4090." DEFVAL { nodeProtection } ::= { mplsFrrGeneralConstraintsEntry 4 }mplsFrrGeneralConstraintsSetupPrio OBJECT-TYPE
SYNTAX Unsigned32 (0..7) MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the setup priority of the detour LSP or bypass tunnel." REFERENCE "Section 4.7 of RFC 3209." DEFVAL { 7 } ::= { mplsFrrGeneralConstraintsEntry 5 }mplsFrrGeneralConstraintsHoldingPrio OBJECT-TYPE
SYNTAX Unsigned32 (0..7) MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the holding priority for the detour LSP or bypass tunnel." REFERENCE "Section 4.7 of RFC 3209." DEFVAL { 0 } ::= { mplsFrrGeneralConstraintsEntry 6 }mplsFrrGeneralConstraintsInclAnyAffinity OBJECT-TYPE
SYNTAX MplsTunnelAffinity MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the include-any link constraint for the detour LSP or bypass tunnel. A link satisfies the include-any constraint if and only if the constraint is zero, or the link and the constraint have a resource class in common." REFERENCE "Section 4.7 of RFC 3209." DEFVAL { 0 } ::= { mplsFrrGeneralConstraintsEntry 7 }mplsFrrGeneralConstraintsInclAllAffinity OBJECT-TYPE
SYNTAX MplsTunnelAffinity MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the include-all link constraint for the detour LSP or bypass tunnel. A link satisfies the include-all constraint if and only if the link contains all of the administrative groups specified in the constraint." REFERENCE "Section 4.7 of RFC 3209." DEFVAL { 0 } ::= { mplsFrrGeneralConstraintsEntry 8 }mplsFrrGeneralConstraintsExclAnyAffinity OBJECT-TYPE
SYNTAX MplsTunnelAffinity MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the exclude-any link constraint for the detour LSP or bypass tunnel. A link satisfies the exclude-any constraint if and only if the link contains none of the administrative groups specified in the constraint." REFERENCE "Section 4.7 of RFC 3209." DEFVAL { 0 } ::= { mplsFrrGeneralConstraintsEntry 9 }mplsFrrGeneralConstraintsHopLimit OBJECT-TYPE
SYNTAX Unsigned32(0..255) MAX-ACCESS read-create STATUS current DESCRIPTION "The maximum number of hops that the detour LSP or bypass tunnel may traverse." REFERENCE "Section 4.1 of RFC 4090." DEFVAL { 32 } ::= { mplsFrrGeneralConstraintsEntry 10 }mplsFrrGeneralConstraintsBandwidth OBJECT-TYPE
SYNTAX MplsBitRate UNITS "kilobits per second" MAX-ACCESS read-create STATUS current DESCRIPTION "The maximum bandwidth specifically reserved for a detour LSP or bypass tunnel, in units of thousands of bits per second (kbps). Note that setting this value to 0 indicates best-effort treatment." DEFVAL { 0 } ::= { mplsFrrGeneralConstraintsEntry 11 }mplsFrrGeneralConstraintsStorageType OBJECT-TYPE
SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this configuration entry. Conceptual rows having the value 'permanent' need not allow write access to any columnar objects in the row." DEFVAL { volatile } ::= { mplsFrrGeneralConstraintsEntry 12 }mplsFrrGeneralConstraintsRowStatus OBJECT-TYPE
SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object is used to create, modify, and/or delete a row in this table. When a row in this table is in active(1) state, no objects in that row can be modified except mplsFrrGeneralConstraintsRowStatus and mplsFrrGeneralConstraintsStorageType." ::= { mplsFrrGeneralConstraintsEntry 13 }-- MPLS Fast-Reroute Tunnel Actual Route Hop table
mplsFrrGeneralTunnelARHopTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsFrrGeneralTunnelARHopEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table sparsely extends mplsTunnelARHopTable defined in the MPLS-TE-STD-MIB module with fast-reroute objects. These objects specify the status of local protection, including availability and active use, on a per-hop basis, of hops traversed by a protected tunnel." ::= { mplsFrrGeneralObjects 4 } mplsFrrGeneralTunnelARHopEntry OBJECT-TYPE SYNTAX MplsFrrGeneralTunnelARHopEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This entry contains fast-reroute protection status of a single protected tunnel hop." INDEX { mplsTunnelARHopListIndex, mplsTunnelARHopIndex } ::= { mplsFrrGeneralTunnelARHopTable 1 } MplsFrrGeneralTunnelARHopEntry ::= SEQUENCE { mplsFrrGeneralTunnelARHopSessionAttributeFlags BITS, mplsFrrGeneralTunnelARHopRROSubObjectFlags BITS } mplsFrrGeneralTunnelARHopSessionAttributeFlags OBJECT-TYPE SYNTAX BITS { arHopSessionAttrFlagsUnsupported(0), localProtectionDesired(1), labelRecordingDesired(2), sestyleDesired(3), bandwidthProtectionDesired(4), nodeProtectionDesired(5) } MAX-ACCESS read-only STATUS current DESCRIPTION "This object indicates the desired values for the associated SESSION_ATTRIBUTE flags. Note that since this object is a BITS type, the bits may be set to indicate various desired combinations of the SESSION_ATTRIBUTE flags. If SESSION_ATTRIBUTE flags are not supported, then this object contains the value of arHopSessionAttrFlagsUnsupported(0)." REFERENCE "See Section 4.3 of RFC 4090 for SESSION_ATTRIBUTE flags." ::= { mplsFrrGeneralTunnelARHopEntry 1 }mplsFrrGeneralTunnelARHopRROSubObjectFlags OBJECT-TYPE
SYNTAX BITS { arHopRROSubObjectFlagsUnsupported(0), localProtectionAvailable(1), localProtectionInUse(2), bandwidthProtection(3), nodeProtection(4) } MAX-ACCESS read-only STATUS current DESCRIPTION "This object indicates the flags that are currently in use by the associated Record Route Object (RRO) sub-object.-
-
Note that since this object is a BITS type,
the bits may be set to indicate various combinations of the flags.
-
If the RRO sub-object is not supported, then this object contains the value of arHopRROSubObjectFlagsUnsupported(0)." REFERENCE "Section 4.4 of RFC 4090." ::= { mplsFrrGeneralTunnelARHopEntry 2 } -- Notifications-- Module Conformance Statement
mplsFrrGeneralCompliances
OBJECT IDENTIFIER ::= {mplsFrrGeneralConformance 1 }mplsFrrGeneralGroups
OBJECT IDENTIFIER ::= {mplsFrrGeneralConformance 2 }mplsFrrGeneralModuleFullCompliance MODULE-COMPLIANCE
-
STATUS current
DESCRIPTION-
"Compliance statements for SNMP engines that support the
-
MPLS-FRR-GENERAL-STD-MIB module."
-
MODULE IF-MIB -- The Interfaces Group MIB module, RFC 2863.
MANDATORY-GROUPS { ifGeneralInformationGroup, ifCounterDiscontinuityGroup } MODULE MPLS-TE-STD-MIB -- The MPLS Traffic Engineering -- MIB module, RFC 3812 MANDATORY-GROUPS { mplsTunnelGroup, mplsTunnelScalarGroup }-
MODULE -- this module
-
MANDATORY-GROUPS {
mplsFrrGeneralScalarGroup, mplsFrrGeneralTunnelARHopGroup, mplsFrrGeneralConstraintsGroup } OBJECT mplsFrrGeneralConstraintsRowStatus SYNTAX RowStatus { active(1), notInService(2) } WRITE-SYNTAX RowStatus { active(1), notInService(2), createAndGo(4), destroy(6) } DESCRIPTION "Support for createAndWait and notReady is not required." ::= { mplsFrrGeneralCompliances 1 }mplsFrrGeneralModuleReadOnlyCompliance MODULE-COMPLIANCE
STATUS current DESCRIPTION "Compliance statements for SNMP engines that support the MPLS-FRR-GENERAL-STD-MIB module." MODULE-
-
MANDATORY-GROUPS {
-
mplsFrrGeneralScalarGroup, mplsFrrGeneralTunnelARHopGroup, mplsFrrGeneralConstraintsGroup } -- Scalars OBJECT mplsFrrGeneralProtectionMethod MIN-ACCESS read-only DESCRIPTION "Write access is not required." -- mplsFrrGeneralConstraintsTable OBJECT mplsFrrGeneralConstraintsSetupPrio MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrGeneralConstraintsHoldingPrio MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrGeneralConstraintsInclAnyAffinity MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrGeneralConstraintsInclAllAffinity MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrGeneralConstraintsExclAnyAffinity MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrGeneralConstraintsBandwidth MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrGeneralConstraintsProtectionType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrGeneralConstraintsHopLimit MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrGeneralConstraintsStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrGeneralConstraintsRowStatus SYNTAX RowStatus { active(1) } MIN-ACCESS read-only DESCRIPTION "Write access is not required." ::= { mplsFrrGeneralCompliances 2 }-- Units of conformance
mplsFrrGeneralScalarGroup OBJECT-GROUP
OBJECTS { mplsFrrGeneralIngressTunnelInstances, mplsFrrGeneralProtectionMethod } STATUS current DESCRIPTION "Objects that are required to display general fast-reroute information." ::= { mplsFrrGeneralGroups 1 }mplsFrrGeneralConstraintsGroup OBJECT-GROUP
-
OBJECTS {
mplsFrrGeneralConstraintsProtectionType, mplsFrrGeneralConstraintsSetupPrio, mplsFrrGeneralConstraintsHoldingPrio, mplsFrrGeneralConstraintsInclAnyAffinity, mplsFrrGeneralConstraintsInclAllAffinity, mplsFrrGeneralConstraintsExclAnyAffinity, mplsFrrGeneralConstraintsHopLimit, mplsFrrGeneralConstraintsBandwidth, mplsFrrGeneralConstraintsStorageType, mplsFrrGeneralConstraintsRowStatus } STATUS current DESCRIPTION "Objects that are required to configure fast-reroute constraints at the ingress LSR of the tunnel that requires fast-reroute service." ::= { mplsFrrGeneralGroups 2 } mplsFrrGeneralTunnelARHopGroup OBJECT-GROUP OBJECTS { mplsFrrGeneralTunnelARHopSessionAttributeFlags, mplsFrrGeneralTunnelARHopRROSubObjectFlags } STATUS current DESCRIPTION "Objects that are required to present per-hop fast-reroute protection status." ::= { mplsFrrGeneralGroups 3} END -- End of MPLS-FRR-GENERAL-STD-MIB
6.2. MPLS-FRR-ONE2ONE-STD-MIB Module Definitions
-
-- Start of MPLS-FRR-ONE2ONE-STD-MIB MPLS-FRR-ONE2ONE-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, mib-2, Integer32, Gauge32 FROM SNMPv2-SMI -- [RFC2578] MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF -- [RFC2580] TruthValue FROM SNMPv2-TC -- [RFC2579] MplsTunnelIndex, MplsTunnelInstanceIndex, MplsLsrIdentifier FROM MPLS-TC-STD-MIB -- [RFC3811] InetAddressType, InetAddress FROM INET-ADDRESS-MIB -- [RFC4001] mplsFrrGeneralScalarGroup, mplsFrrGeneralTunnelARHopGroup, mplsFrrGeneralConstraintsGroup FROM MPLS-FRR-GENERAL-STD-MIB ;mplsFrrOne2OneMIB MODULE-IDENTITY
LAST-UPDATED "201111030000Z" -- 03 Nov 2011 00:00:00 GMT ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group" CONTACT-INFO " Riza Cetin Email: [email protected] Thomas D. Nadeau Email: [email protected] A S Kiran Koushik Email: [email protected] Stefaan De Cnodder Email: [email protected] Der-Hwa Gan Email: [email protected] " DESCRIPTION "Copyright © 2011 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).
-
This MIB module contains object definitions for the
MPLS Traffic Engineering one-to-one backup method for
Fast Reroute as defined in RFC 4090."
-
-- Revision history.
-
REVISION
"201111030000Z" -- 03 Nov 2011 00:00:00 GMT DESCRIPTION "Initial version. Published as RFC 6445." ::= { mib-2 203 } -- Top-level components of this MIB module mplsFrrOne2OneObjects OBJECT IDENTIFIER ::= { mplsFrrOne2OneMIB 1 } mplsFrrOne2OneConformance OBJECT IDENTIFIER ::= { mplsFrrOne2OneMIB 2 }-- Scalar objects defined for the one-to-one style of FRR
mplsFrrIncomingDetourLSPs OBJECT-TYPE
SYNTAX Integer32 (0..2147483647) MAX-ACCESS read-only STATUS current DESCRIPTION "The number of detour LSPs entering the device." ::= { mplsFrrOne2OneObjects 1 }mplsFrrOutgoingDetourLSPs OBJECT-TYPE
SYNTAX Integer32 (0..2147483647) MAX-ACCESS read-only STATUS current DESCRIPTION "The number of detour LSPs leaving the device." ::= { mplsFrrOne2OneObjects 2 }mplsFrrOne2OneDetourOriginating OBJECT-TYPE
SYNTAX Integer32(0..2147483647) MAX-ACCESS read-only STATUS current DESCRIPTION "The number of detour LSPs originating at this PLR." ::= { mplsFrrOne2OneObjects 3 }mplsFrrActiveProtectedLSPs OBJECT-TYPE
SYNTAX Gauge32 MAX-ACCESS read-only STATUS current DESCRIPTION "Indicates the number of LSPs currently protected by the FRR feature where this device acts as the PLR for those LSPs." ::= { mplsFrrOne2OneObjects 4 } -- -- One-to-One specific tables -- -- Tables in this section pertain only to the one-to-one -- style of FRR. ---- MPLS Fast-Reroute Point of Local Repair table
mplsFrrOne2OnePlrTable OBJECT-TYPE SYNTAX SEQUENCE OF MplsFrrOne2OnePlrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table shows a list of protected TE tunnels with the corresponding protecting tunnel, as well as the PLR where the protecting tunnel that initiated the detour LSPs traverses this node." ::= { mplsFrrOne2OneObjects 5 } mplsFrrOne2OnePlrEntry OBJECT-TYPE SYNTAX MplsFrrOne2OnePlrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents a protected tunnel LSP together with its detour tunnel instance. An entry in this table is only created by an SNMP engine as instructed by an MPLS signaling protocol.-
-
The entries of this table are present in all LSRs on the path of the detour LSP.
The objects mplsFrrOne2OnePlrSenderAddrType and mplsFrrOne2OnePlrSenderAddr can be modified after the row is created.
The objects mplsFrrOne2OnePlrTunnelIndex, mplsFrrOne2OnePlrTunnelDetourInstance, mplsFrrOne2OnePlrTunnelIngressLSRId, and mplsFrrOne2OnePlrTunnelEgressLSRId have the same values as the objects mplsTunnelIndex, mplsTunnelInstance, mplsTunnelIngressLSRId, and mplsTunnelEgressLSRId of the detour tunnel instance created in the mplsTunnelTable (MPLS-TE-STD-MIB).
-
The entries in this table will be deleted when the corresponding entries in the mplsTunnelTable are deleted." INDEX { mplsFrrOne2OnePlrTunnelIndex, -- from MPLS-TE-STD-MIB mplsFrrOne2OnePlrTunnelDetourInstance,-- mplsTunnelTable mplsFrrOne2OnePlrTunnelIngressLSRId,-- Tunnels must exist mplsFrrOne2OnePlrTunnelEgressLSRId, -- a priori mplsFrrOne2OnePlrId } ::= { mplsFrrOne2OnePlrTable 1 } MplsFrrOne2OnePlrEntry ::= SEQUENCE { mplsFrrOne2OnePlrTunnelIndex MplsTunnelIndex, mplsFrrOne2OnePlrTunnelDetourInstance MplsTunnelInstanceIndex, mplsFrrOne2OnePlrTunnelIngressLSRId MplsLsrIdentifier, mplsFrrOne2OnePlrTunnelEgressLSRId MplsLsrIdentifier, mplsFrrOne2OnePlrId MplsLsrIdentifier, mplsFrrOne2OnePlrSenderAddrType InetAddressType, mplsFrrOne2OnePlrSenderAddr InetAddress, mplsFrrOne2OnePlrAvoidNodeAddrType InetAddressType, mplsFrrOne2OnePlrAvoidNodeAddr InetAddress }mplsFrrOne2OnePlrTunnelIndex OBJECT-TYPE
SYNTAX MplsTunnelIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies a tunnel between a pair of LSRs from the mplsTunnelEntry." ::= { mplsFrrOne2OnePlrEntry 1 }mplsFrrOne2OnePlrTunnelDetourInstance OBJECT-TYPE
SYNTAX MplsTunnelInstanceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies a detour instance of a tunnel from the mplsTunnelEntry. - lower 16 bits : protected tunnel instance - higher 16 bits: detour instance" ::= { mplsFrrOne2OnePlrEntry 2 }mplsFrrOne2OnePlrTunnelIngressLSRId OBJECT-TYPE
SYNTAX MplsLsrIdentifier MAX-ACCESS not-accessible STATUS current DESCRIPTION "The purpose of this object is to uniquely identify a tunnel within a network. When the MPLS signaling protocol is rsvp(2), this object SHOULD contain the same value as the Extended Tunnel ID field in the-
-
SESSION object. When the MPLS signaling protocol is crldp(3), this object SHOULD contain the same
value as the Ingress LSR Router ID field in the
LSPID TLV object.
-
This value represents the head-end of the protected tunnel instance." REFERENCE "Section 4.7 of RFC 3209." ::= { mplsFrrOne2OnePlrEntry 3 }mplsFrrOne2OnePlrTunnelEgressLSRId OBJECT-TYPE
SYNTAX MplsLsrIdentifier MAX-ACCESS not-accessible STATUS current DESCRIPTION "Specifies the egress LSR ID of the protected tunnel instance." ::= { mplsFrrOne2OnePlrEntry 4 }mplsFrrOne2OnePlrId OBJECT-TYPE
SYNTAX MplsLsrIdentifier MAX-ACCESS not-accessible STATUS current DESCRIPTION "This value represents the PLR that has initiated a detour LSP to protect a tunnel instance. This value is signaled via the DETOUR object defined in MPLS RSVP." REFERENCE "Section 4.2 of RFC 4090." ::= { mplsFrrOne2OnePlrEntry 5 }mplsFrrOne2OnePlrSenderAddrType OBJECT-TYPE
SYNTAX InetAddressType MAX-ACCESS read-write STATUS current DESCRIPTION "Denotes the address type of this detour instance's sender address." DEFVAL { ipv4 } ::= { mplsFrrOne2OnePlrEntry 6 }mplsFrrOne2OnePlrSenderAddr OBJECT-TYPE
SYNTAX InetAddress MAX-ACCESS read-write STATUS current DESCRIPTION "The IP address of the PLR that has initiated the detour LSP. The type of this address is determined by the value of the mplsFrrOne2OnePlrSenderAddrType object." ::= { mplsFrrOne2OnePlrEntry 7 }mplsFrrOne2OnePlrAvoidNodeAddrType OBJECT-TYPE
SYNTAX InetAddressType MAX-ACCESS read-only STATUS current DESCRIPTION "Denotes the address type of the node that this PLR tries to avoid." DEFVAL { ipv4 } ::= { mplsFrrOne2OnePlrEntry 8 }mplsFrrOne2OnePlrAvoidNodeAddr OBJECT-TYPE
SYNTAX InetAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The IP address of the node that this PLR tries to avoid. The type of this address is determined by the value of the mplsFrrOne2OnePlrAvoidNodeAddrType object. This value is signaled via the DETOUR object defined in MPLS RSVP." REFERENCE "Section 4.2 of RFC 4090." ::= { mplsFrrOne2OnePlrEntry 9 } -- MPLS One-to-One Fast-Reroute Detour tablemplsFrrOne2OneDetourTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsFrrOne2OneDetourEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table shows detour LSPs." ::= { mplsFrrOne2OneObjects 6 }mplsFrrOne2OneDetourEntry OBJECT-TYPE
SYNTAX MplsFrrOne2OneDetourEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents a detour. An entry in this table is only created by an SNMP engine as instructed by an MPLS signaling protocol." INDEX { mplsFrrOne2OnePlrTunnelIndex, -- from MPLS-TE-STD-MIB mplsFrrOne2OnePlrTunnelDetourInstance, -- mplsTunnelTable mplsFrrOne2OnePlrTunnelIngressLSRId,-- Tunnels must exist mplsFrrOne2OnePlrTunnelEgressLSRId -- a priori } ::= { mplsFrrOne2OneDetourTable 1 } MplsFrrOne2OneDetourEntry ::= SEQUENCE { mplsFrrOne2OneDetourActive TruthValue, mplsFrrOne2OneDetourMergedStatus INTEGER, mplsFrrOne2OneDetourMergedDetourInst MplsTunnelInstanceIndex }mplsFrrOne2OneDetourActive OBJECT-TYPE
SYNTAX TruthValue MAX-ACCESS read-only STATUS current DESCRIPTION "Indicates whether or not the main LSP has switched over to this detour LSP. If the value of this object is 'true', then it means that the main LSP has switched over to this detour LSP. Otherwise, it contains a value of 'false'. This is only relevant for detours originated by this node." ::= { mplsFrrOne2OneDetourEntry 1 }mplsFrrOne2OneDetourMergedStatus OBJECT-TYPE
SYNTAX INTEGER { notMerged(1), mergedWithProtectedTunnel(2), mergedWithDetour(3) } MAX-ACCESS read-only STATUS current DESCRIPTION "This value represents whether or not this detour is merged. This value is set to notMerged(1) if this detour is not merged. This value is set to mergedWithProtectedTunnel(2) if this detour is merged with the protected tunnel. This value is mergedWithDetour(3) if this detour is merged with another detour protecting the same tunnel." ::= { mplsFrrOne2OneDetourEntry 2 }mplsFrrOne2OneDetourMergedDetourInst OBJECT-TYPE
SYNTAX MplsTunnelInstanceIndex MAX-ACCESS read-only STATUS current DESCRIPTION "This value represents the mplsTunnelInstance of the detour with which this detour is merged. This object is only valid when mplsFrrOne2OneDetourMergedStatus is set to mergedWithDetour(3). - lower 16 bits : protected tunnel instance - higher 16 bits: detour instance" ::= { mplsFrrOne2OneDetourEntry 3 }-- Module Conformance Statement
mplsFrrOne2OneCompliances
OBJECT IDENTIFIER ::= {mplsFrrOne2OneConformance 1 }mplsFrrOne2OneGroups
OBJECT IDENTIFIER ::= {mplsFrrOne2OneConformance 2 }mplsFrrOne2OneModuleFullCompliance MODULE-COMPLIANCE
-
STATUS current
DESCRIPTION-
"Compliance statements for SNMP engines that support the
-
MPLS-FRR-ONE2ONE-STD-MIB module." MODULE MPLS-FRR-GENERAL-STD-MIB -- MPLS FRR Generic MIB MANDATORY-GROUPS { mplsFrrGeneralScalarGroup, mplsFrrGeneralTunnelARHopGroup, mplsFrrGeneralConstraintsGroup }-
MODULE -- this module
-
MANDATORY-GROUPS {
mplsFrrOne2OneScalarsGroup, mplsFrrOne2OnePLRDetourGroup, mplsFrrOne2OnePlrGroup } ::= { mplsFrrOne2OneCompliances 1 }mplsFrrOne2OneModuleReadOnlyCompliance MODULE-COMPLIANCE
-
STATUS current
DESCRIPTION
"Compliance statements for SNMP engines that support the
-
MPLS-FRR-ONE2ONE-STD-MIB module." MODULE MANDATORY-GROUPS { mplsFrrOne2OneScalarsGroup, mplsFrrOne2OnePLRDetourGroup, mplsFrrOne2OnePlrGroup } -- mplsFrrOne2OnePlrTable OBJECT mplsFrrOne2OnePlrSenderAddrType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsFrrOne2OnePlrSenderAddr MIN-ACCESS read-only DESCRIPTION "Write access is not required." ::= { mplsFrrOne2OneCompliances 2 }-- Units of conformance
mplsFrrOne2OneScalarsGroup OBJECT-GROUP
OBJECTS { mplsFrrIncomingDetourLSPs, mplsFrrOutgoingDetourLSPs, mplsFrrOne2OneDetourOriginating, mplsFrrActiveProtectedLSPs } STATUS current DESCRIPTION "Objects that are required for general One-to-One PLR information." ::= { mplsFrrOne2OneGroups 1 }mplsFrrOne2OnePLRDetourGroup OBJECT-GROUP
OBJECTS { mplsFrrOne2OneDetourActive, mplsFrrOne2OneDetourMergedStatus, mplsFrrOne2OneDetourMergedDetourInst } STATUS current DESCRIPTION "Objects that are required to present the detour LSP information at the detour ingress, transit, and egress LSRs." ::= { mplsFrrOne2OneGroups 2 }mplsFrrOne2OnePlrGroup OBJECT-GROUP
OBJECTS { mplsFrrOne2OnePlrSenderAddrType, mplsFrrOne2OnePlrSenderAddr, mplsFrrOne2OnePlrAvoidNodeAddrType, mplsFrrOne2OnePlrAvoidNodeAddr } STATUS current DESCRIPTION "Objects that are required to represent the FRR One-to-One PLR information." ::= { mplsFrrOne2OneGroups 3 } END -- End of MPLS-FRR-ONE2ONE-STD-MIB
6.3. MPLS-FRR-FACILITY-STD-MIB Module Definitions
-
-- Start of MPLS-FRR-FACILITY-STD-MIB MPLS-FRR-FACILITY-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, mib-2, Integer32, NOTIFICATION-TYPE, Gauge32 FROM SNMPv2-SMI -- [RFC2578] MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP FROM SNMPv2-CONF -- [RFC2580] TruthValue FROM SNMPv2-TC -- [RFC2579] InterfaceIndex FROM IF-MIB -- [RFC2863] MplsTunnelIndex, MplsTunnelInstanceIndex, MplsLsrIdentifier, MplsBitRate FROM MPLS-TC-STD-MIB -- [RFC3811] mplsFrrGeneralScalarGroup, mplsFrrGeneralTunnelARHopGroup, mplsFrrGeneralConstraintsGroup FROM MPLS-FRR-GENERAL-STD-MIB ;mplsFrrFacilityMIB MODULE-IDENTITY
LAST-UPDATED "201111030000Z" -- 03 Nov 2011 00:00:00 GMT ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group"-
CONTACT-INFO
-
"
Riza Cetin Email: [email protected] Thomas D. Nadeau Email: [email protected] A S Kiran Koushik Email: [email protected] Stefaan De Cnodder Email: [email protected] Der-Hwa Gan Email: [email protected] " DESCRIPTION "Copyright © 2011 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).
-
This MIB module contains object definitions for the
MPLS Traffic Engineering facility backup method for
Fast Reroute as defined in RFC 4090."
-
-- Revision history.
REVISION "201111030000Z" -- 03 Nov 2011 00:00:00 GMT DESCRIPTION "Initial version. Published as RFC 6445." ::= { mib-2 204 } -- Top-level components of this MIB module mplsFrrFacilityNotifications OBJECT IDENTIFIER ::= { mplsFrrFacilityMIB 0 } mplsFrrFacilityObjects OBJECT IDENTIFIER ::= { mplsFrrFacilityMIB 1 } mplsFrrFacilityConformance OBJECT IDENTIFIER ::= { mplsFrrFacilityMIB 2 }-- Scalar objects defined for the facility backup style of FRR
mplsFrrConfiguredInterfaces OBJECT-TYPE
SYNTAX Integer32(0..2147483647) MAX-ACCESS read-only STATUS current DESCRIPTION "Indicates the number of MPLS interfaces configured for protection." DEFVAL { 0 } ::= { mplsFrrFacilityObjects 1 }mplsFrrActiveInterfaces OBJECT-TYPE
SYNTAX Gauge32 MAX-ACCESS read-only STATUS current DESCRIPTION "Indicates the number of interfaces currently being protected. This value MUST be less than or equal to mplsFrrConfiguredInterfaces." DEFVAL { 0 } ::= { mplsFrrFacilityObjects 2 }mplsFrrConfiguredBypassTunnels OBJECT-TYPE
SYNTAX Gauge32 MAX-ACCESS read-only STATUS current DESCRIPTION "Indicates the number of bypass tunnels configured to protect TE tunnels on this LSR." DEFVAL { 0 } ::= { mplsFrrFacilityObjects 3 }mplsFrrActiveBypassTunnels OBJECT-TYPE
SYNTAX Gauge32 MAX-ACCESS read-only STATUS current DESCRIPTION "Indicates the number of bypass tunnels indicated in mplsFrrConfiguredBypassTunnels whose operStatus is up(1), indicating that they are currently protecting TE tunnels on this LSR." DEFVAL { 0 } ::= { mplsFrrFacilityObjects 4 }mplsFrrFacilityNotificationsEnabled OBJECT-TYPE
SYNTAX TruthValue MAX-ACCESS read-write STATUS current DESCRIPTION "Enables or disables FRR notifications defined in this MIB module. Notifications are disabled by default. This object is needed to control the notifications emitted by this implementation." DEFVAL { false } ::= { mplsFrrFacilityObjects 5 }mplsFrrFacilityNotificationsMaxRate OBJECT-TYPE
SYNTAX Gauge32 UNITS "Notifications per Second" MAX-ACCESS read-write STATUS current DESCRIPTION "This variable indicates the maximum number of notifications issued per second. If events occur more rapidly, the implementation may simply fail to emit these notifications during that period, or may queue them until an appropriate time. In case the implementation chooses to drop the events during throttling instead of queuing them to be sent at a later time, it is assumed that there will be no indication that events are being thrown away. A value of 0 means no throttling is applied and events may be generated at the rate at which they occur." DEFVAL { 0 } ::= { mplsFrrFacilityObjects 6 } -- -- Facility-based FRR-specific tables -- -- Tables in this section pertain only to the facility-based -- style of FRR. ---
mplsFrrFacilityDBTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsFrrFacilityDBEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The mplsFrrFacilityDBTable provides information about the fast-reroute database. Each entry belongs to a protected-
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interface, protecting backup tunnel, and protected tunnel. MPLS interfaces defined on this node are protected by backup tunnels and are indicated by the index mplsFrrFacilityProtectedIfIndex. If the interface index is set to 0, this indicates that the remaining indexes apply to all configured protected interfaces.
Note that all objects in this table are read-only, and if new objects are added to this table, they should also be read-only.
It is recommended that ifIndex persistence be enabled across re-initializations.
If persistence is not implemented, then the value of mplsFrrFacilityProtectedIfIndex in this
table cannot be guaranteed across restarts and all entries in this table MUST NOT be persistent, or the values of mplsFrrFacilityProtectedIfIndex MUST be reconstructed on restart.It is recommended that entries in this table be persistent across reboots.
The protecting tunnel is indicated by the index mplsFrrFacilityProtectingTunnelIndex and represents a valid mplsTunnelEntry. Note that the tunnel instance index of the protecting tunnel may be set to 0, which indicates the tunnel head interface for the protecting tunnel, as per RFC 3812, but it may also be defined using the following semantics:
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- lower 16 bits : protected tunnel instance - higher 16 bits: must be all zeros" ::= { mplsFrrFacilityObjects 7 }mplsFrrFacilityDBEntry OBJECT-TYPE
SYNTAX MplsFrrFacilityDBEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in the mplsFrrFacilityDBTable represents a single protected LSP, protected by a backup tunnel on a specific protected interface, or if the interface index is set to 0, on all interfaces. Note that for brevity, managers should consult the mplsTunnelTable present in the MPLS-TE-STD-MIB module for additional information about the protecting and protected tunnels, and the ifEntry in the IF-MIB module for the protected interface." INDEX { mplsFrrFacilityProtectedIfIndex, -- protected ifIndex mplsFrrFacilityProtectingTunnelIndex,-- protecting TE tun mplsFrrFacilityBackupTunnelIndex, -- protected TE tun mplsFrrFacilityBackupTunnelInstance, -- LSP mplsFrrFacilityBackupTunnelIngressLSRId, mplsFrrFacilityBackupTunnelEgressLSRId } ::= { mplsFrrFacilityDBTable 1 } MplsFrrFacilityDBEntry ::= SEQUENCE { mplsFrrFacilityProtectedIfIndex InterfaceIndex, mplsFrrFacilityProtectingTunnelIndex MplsTunnelIndex, mplsFrrFacilityBackupTunnelIndex MplsTunnelIndex, mplsFrrFacilityBackupTunnelInstance MplsTunnelInstanceIndex, mplsFrrFacilityBackupTunnelIngressLSRId MplsLsrIdentifier, mplsFrrFacilityBackupTunnelEgressLSRId MplsLsrIdentifier, mplsFrrFacilityDBNumProtectingTunnelOnIf Gauge32, mplsFrrFacilityDBNumProtectedLspOnIf Gauge32, mplsFrrFacilityDBNumProtectedTunnels Gauge32, mplsFrrFacilityDBProtectingTunnelStatus INTEGER, mplsFrrFacilityDBProtectingTunnelResvBw MplsBitRate }mplsFrrFacilityProtectedIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies the interface configured for FRR protection. If this object is set to 0, this indicates that the remaining indexing combinations for this row apply to all interfaces on this device for which the FRR feature can operate." ::= { mplsFrrFacilityDBEntry 1 }mplsFrrFacilityProtectingTunnelIndex OBJECT-TYPE
SYNTAX MplsTunnelIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies the mplsTunnelEntry primary index for the tunnel head interface designated to protect the interface as specified in the mplsFrrFacilityProtectedIfIndex (and all of the tunnels using this interface). Note that the corresponding mplsTunnelInstance MUST BE 0 as per the indexing convention stipulated." REFERENCE "Section 6.1 of RFC 3812." ::= { mplsFrrFacilityDBEntry 2 }mplsFrrFacilityBackupTunnelIndex OBJECT-TYPE
SYNTAX MplsTunnelIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies the mplsTunnelEntry primary index for the TE tunnel LSP being protected on the interface as specified by mplsFrrFacilityProtectedIfIndex." ::= { mplsFrrFacilityDBEntry 3 }mplsFrrFacilityBackupTunnelInstance OBJECT-TYPE
SYNTAX MplsTunnelInstanceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies the mplsTunnelEntry secondary index for the TE tunnel LSP being protected on the interface as specified by mplsFrrFacilityProtectedIfIndex." ::= { mplsFrrFacilityDBEntry 4 }mplsFrrFacilityBackupTunnelIngressLSRId OBJECT-TYPE
SYNTAX MplsLsrIdentifier MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies the mplsTunnelEntry third index for the TE tunnel LSP being protected on the interface as specified by mplsFrrFacilityProtectedIfIndex." REFERENCE "Section 6.1 of RFC 3812." ::= { mplsFrrFacilityDBEntry 5 } mplsFrrFacilityBackupTunnelEgressLSRId OBJECT-TYPE SYNTAX MplsLsrIdentifier MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies the mplsTunnelEntry fourth index for the TE tunnel LSP being protected on the interface as specified by mplsFrrFacilityProtectedIfIndex." ::= { mplsFrrFacilityDBEntry 6 }mplsFrrFacilityDBNumProtectingTunnelOnIf OBJECT-TYPE
SYNTAX Gauge32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of backup tunnels protecting the interface specified by mplsFrrFacilityProtectedIfIndex." ::= { mplsFrrFacilityDBEntry 7 }mplsFrrFacilityDBNumProtectedLspOnIf OBJECT-TYPE
SYNTAX Gauge32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of LSPs currently being protected on the interface specified by mplsFrrFacilityProtectedIfIndex." ::= { mplsFrrFacilityDBEntry 8 }mplsFrrFacilityDBNumProtectedTunnels OBJECT-TYPE
SYNTAX Gauge32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of tunnels protected on the interface specified by mplsFrrFacilityProtectedIfIndex." ::= { mplsFrrFacilityDBEntry 9 }mplsFrrFacilityDBProtectingTunnelStatus OBJECT-TYPE
SYNTAX INTEGER { active(1), ready(2), partial(3) } MAX-ACCESS read-only STATUS current DESCRIPTION "Specifies the state of the protecting tunnel as specified by mplsFrrFacilityProtectingTunnelIndex. active - This tunnel's label has been placed in the LFIB and is ready to be applied to incoming packets. ready - This tunnel's label entry has been created but is not yet in the LFIB. partial - This tunnel's label entry has not been fully created." ::= { mplsFrrFacilityDBEntry 10 } mplsFrrFacilityDBProtectingTunnelResvBw OBJECT-TYPE SYNTAX MplsBitRate UNITS "kilobits per second" MAX-ACCESS read-only STATUS current DESCRIPTION "Specifies the amount of bandwidth in units of '1,000 bits per second', actually reserved by the protecting tunnel for facility backup purposes. This value is repeated here from the MPLS-TE-STD-MIB module because the tunnel entry will reveal the bandwidth reserved by the signaling protocol, which is typically 0 for backup tunnels so as to not over-book bandwidth. However, internal reservations are typically made on the PLR; thus, this value should be revealed here, as it is often different from mplsTunnelResourceMeanRate found in the MPLS-TE-STD-MIB module." ::= { mplsFrrFacilityDBEntry 11 } -- Notifications mplsFrrFacilityInitialBackupTunnelInvoked NOTIFICATION-TYPE OBJECTS { mplsFrrFacilityDBNumProtectingTunnelOnIf, mplsFrrFacilityDBNumProtectedLspOnIf, mplsFrrFacilityDBNumProtectedTunnels, mplsFrrFacilityDBProtectingTunnelStatus, mplsFrrFacilityDBProtectingTunnelResvBw } STATUS current DESCRIPTION "This notification is generated when a tunnel running over an interface as specified in the mplsFrrConstraintsTable is initially protected by the backup tunnel also specified in the mplsFrrConstraintsTable. In some implementations, there may be a difference between when the control plane triggers this notification and when the hardware is programmed to utilize the protection path. Due to the urgency of this operation, it is acceptable for the control plane to issue this notification either before or after it programs the hardware. In cases where it is the latter approach, the notification MUST be sent immediately after the data plane has been altered.-
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This notification should not be generated for each subsequent tunnel that is backed up by the FRR feature on this LSR, as this may result in potential scaling issues with regard to LSR performance and network load. Note also that notifications MUST be generated in accordance with the
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mplsFrrNotificationsMaxRate." ::= { mplsFrrFacilityNotifications 1 }mplsFrrFacilityFinalTunnelRestored NOTIFICATION-TYPE
OBJECTS { mplsFrrFacilityDBNumProtectingTunnelOnIf, mplsFrrFacilityDBNumProtectedLspOnIf, mplsFrrFacilityDBNumProtectedTunnels, mplsFrrFacilityDBProtectingTunnelStatus, mplsFrrFacilityDBProtectingTunnelResvBw } STATUS current DESCRIPTION "This notification is generated when the final tunnel that is being protected by a backup tunnel as specified in the mplsFrrConstraintsTable is restored to normal operation. This notification should not be generated for each restored tunnel, as this may result in potential scaling issues with regard to LSR performance and network load. Note also that notifications MUST be generated in accordance with the mplsFrrNotificationsMaxRate." ::= { mplsFrrFacilityNotifications 2 }-- Module Conformance Statement
mplsFrrFacilityCompliances
OBJECT IDENTIFIER ::= {mplsFrrFacilityConformance 1 }mplsFrrFacilityGroups
OBJECT IDENTIFIER ::= {mplsFrrFacilityConformance 2 }mplsFrrFacilityModuleFullCompliance MODULE-COMPLIANCE
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STATUS current
DESCRIPTION-
"Compliance statements for SNMP engines that support the
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MPLS-FRR-FACILITY-STD-MIB module." MODULE MPLS-FRR-GENERAL-STD-MIB -- MPLS FRR Generic MIB MANDATORY-GROUPS { mplsFrrGeneralScalarGroup, mplsFrrGeneralTunnelARHopGroup, mplsFrrGeneralConstraintsGroup }-
MODULE -- this module
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MANDATORY-GROUPS {
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mplsFrrFacilityScalarGroup, mplsFrrFacilityDBGroup,
mplsFrrFacilityNotificationsGroup
} -
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::= { mplsFrrFacilityCompliances 1 }mplsFrrFacilityModuleReadOnlyCompliance MODULE-COMPLIANCE
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STATUS current
DESCRIPTION-
"Compliance statements for SNMP engines that support the
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MPLS-FRR-FACILITY-STD-MIB module." MODULE MPLS-FRR-GENERAL-STD-MIB -- MPLS FRR Generic MIB MANDATORY-GROUPS { mplsFrrGeneralScalarGroup, mplsFrrGeneralTunnelARHopGroup, mplsFrrGeneralConstraintsGroup }-
MODULE -- this module
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MANDATORY-GROUPS {
mplsFrrFacilityScalarGroup, mplsFrrFacilityDBGroup, mplsFrrFacilityNotificationsGroup } ::= { mplsFrrFacilityCompliances 2 }-- Units of conformance
mplsFrrFacilityScalarGroup OBJECT-GROUP
OBJECTS { mplsFrrConfiguredInterfaces, mplsFrrActiveInterfaces, mplsFrrConfiguredBypassTunnels, mplsFrrActiveBypassTunnels, mplsFrrFacilityNotificationsEnabled, mplsFrrFacilityNotificationsMaxRate } STATUS current DESCRIPTION "Objects that are required to represent the FRR Facility Route Database information." ::= { mplsFrrFacilityGroups 1 }mplsFrrFacilityDBGroup OBJECT-GROUP
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OBJECTS { mplsFrrFacilityDBNumProtectingTunnelOnIf,
mplsFrrFacilityDBNumProtectedLspOnIf,
mplsFrrFacilityDBNumProtectedTunnels,
mplsFrrFacilityDBProtectingTunnelStatus,
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mplsFrrFacilityDBProtectingTunnelResvBw } STATUS current DESCRIPTION "Objects that are required to represent the FRR Facility Route Database information." ::= { mplsFrrFacilityGroups 2 }mplsFrrFacilityNotificationsGroup NOTIFICATION-GROUP
NOTIFICATIONS { mplsFrrFacilityInitialBackupTunnelInvoked, mplsFrrFacilityFinalTunnelRestored } STATUS current DESCRIPTION "Objects that are required to represent FRR notifications." ::= { mplsFrrFacilityGroups 3 } END -- End of MPLS-FRR-FACILITY-STD-MIB
7. Security Considerations
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It is clear that these MIB modules are potentially useful for the monitoring of MPLS LSRs supporting fast reroute. These MIB modules can also be used for configuration of certain objects; note that anything that can be configured can be incorrectly configured, with potentially disastrous results.
There are a number of management objects defined in these MIB modules with a MAX-ACCESS clause of read-write and/or read-create. Such objects may be considered sensitive or vulnerable in some network environments. The support for SET operations in a non-secure environment without proper protection can have a negative effect on network operations. These are the tables and objects and their sensitivity/vulnerability:
- The mplsFrrGeneralConstraintsTable (mplsFrrGeneralConstraintsProtectionType, mplsFrrGeneralConstraintsSetupPrio, etc.), and some objects in the mplsFrrScalarGroup (mplsFrrGeneralProtectionMethod, mplsFrrFacilityNotificationsEnabled, etc.) contain objects that may be used to provision MPLS fast-reroute features. Unauthorized access to these objects could result in disruption of traffic on the network.
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:
- The mplsFrrOne2OnePlrTable (mplsFrrOne2OnePlrSenderAddr, mplsFrrOne2OnePlrAvoidNodeAddr, etc.), mplsFrrOne2OneDetourTable (mplsFrrOne2OneDetourActive, mplsFrrOne2OneDetourMergedDetourInst, etc.), and mplsFrrGeneralTunnelARHopTable (mplsFrrGeneralTunnelARHopSessionAttributeFlags, mplsFrrGeneralTunnelARHopRROSubObjectFlags, etc.), and some objects contained in the mplsFrrScalarGroup (mplsFrrGeneralProtectionMethod, mplsFrrActiveInterfaces, etc.), collectively show the MPLS fast-reroute interfaces, tunnels, and other associated fast-reroute feature configurations as well as their linkages to other MPLS-related configuration and/or performance statistics. Administrators not wishing to reveal this information should consider these objects sensitive/vulnerable and take precautions so they are not revealed.
SNMP versions prior to SNMPv3 did not include adequate security. Even if the network itself is secure (for example by using IPsec), even then, 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 these MIB modules.
It is RECOMMENDED that implementers consider the security features as provided by the SNMPv3 framework (see [RFC3410], section 8), including full support for the SNMPv3 cryptographic mechanisms (for authentication and privacy).
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 these MIB modules 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.
8. IANA Considerations
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The MIB modules in this document use the IANA-assigned OBJECT IDENTIFIER values recorded in the SMI Numbers registry.
8.1. IANA Considerations for MPLS-FRR-GENERAL-STD-MIB
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IANA has assigned { mib-2 202 } to the MPLS-FRR-GENERAL-STD-MIB module specified in this document.
8.2. IANA Considerations for MPLS-FRR-ONE2ONE-STD-MIB
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IANA has assigned { mib-2 203 } to the MPLS-FRR-ONE2ONE-STD-MIB module specified in this document.
8.3. IANA Considerations for MPLS-FRR-FACILITY-STD-MIB
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IANA has assigned { mib-2 204 } to the MPLS-FRR-FACILITY-STD-MIB module specified in this document.
9. Acknowledgments
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This document is a product of the MPLS Working Group. We would like to thank Alia Atlas, Yeong Tai, Walter Vanhimbeeck, Mike Piecuch, Adrien Grise, Joan Cucchiara, and Adrian Farrel for the helpful and colorful discussions, editorial comments, and contributions related to this document.
10. References
10.1. Normative References
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[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2578] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999. [RFC2579] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999. [RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999. [RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB", RFC 2863, June 2000. [RFC3031] Rosen, E., Viswanathan, A., and R. Callon, "Multiprotocol Label Switching Architecture", RFC 3031, January 2001. [RFC3811] Nadeau, T., Ed., and J. Cucchiara, Ed., "Definitions of Textual Conventions (TCs) for Multiprotocol Label Switching (MPLS) Management", RFC 3811, June 2004. [RFC3812] Srinivasan, C., Viswanathan, A., and T. Nadeau, "Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB)", RFC 3812, June 2004. [RFC3813] Srinivasan, C., Viswanathan, A., and T. Nadeau, "Multiprotocol Label Switching (MPLS) Label Switching Router (LSR) Management Information Base (MIB)", RFC 3813, June 2004. [RFC4001] Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, "Textual Conventions for Internet Network Addresses", RFC 4001, February 2005. [RFC4090] Pan, P., Ed., Swallow, G., Ed., and A. Atlas, Ed., "Fast Reroute Extensions to RSVP-TE for LSP Tunnels", RFC 4090, May 2005.
10.2. Informative References
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[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002. [RFC4990] Shiomoto, K., Papneja, R., and R. Rabbat, "Use of Addresses in Generalized Multiprotocol Label Switching (GMPLS) Networks", RFC 4990, September 2007.
11. Contributors
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Stefaan De Cnodder
Alcatel
Francis Wellesplein 1
B-2018 Antwerp, BelgiumEMail: [email protected] Der-Hwa Gan Juniper Networks, Inc. 1194 N. Mathilda Avenue Sunnyvale, CA 94089
EMail:
[email protected]
Editors' Addresses
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Thomas D. Nadeau CA Technologies, Inc. 273 Corporate Drive Portsmouth, NH 03801 EMail: [email protected] A S Kiran Koushik Cisco Systems, Inc. 12515 Research Blvd., Bldg. 4 Austin, TX 78664 Phone: +1-512-378-1482 EMail: [email protected]
Riza Cetin
Alcatel
Francis Wellesplein 1
B-2018 Antwerp, BelgiumEMail: [email protected]