Network Working Group Riza Cetin, Ed.
Internet Draft Alcatel
Proposed Status: Standards Track
draftExpires: January 2007 Thomas D. Nadeau, Ed.
Cisco Systems, Inc.
July 2006
Multiprotocol Label Switching (MPLS) Traffic Engineering Management
Information Base for Fast Reroute
draft-ietf-mpls-fastreroute-mib-05.txt
Status of This Memo
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Copyright Notice
Copyright (C) The Internet Society (2006).
Abstract
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 for Multiprotocol Label
Switching fast rerouting.
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Table of Contents
1. Introduction...............................................2
2. Terminology................................................2
3. The Internet-Standard Management Framework.................3
4. Brief Description of MIB Module Objects....................3
5. MPLS-FRR-STD-MIB MIB Module Definitions....................4
6. Acknowledgments...........................................30
7. Editors' Addresses........................................30
8. Contributors' Addresses...................................30
9 . Full Copyright Statement..................................30
10. Security Considerations...................................41
11. References...............................................29
11.1 Normative References......................................37
11.2 Informative References....................................37
12. IANA Considerations.......................................41
12.1 IANA Considerations for MPLS-FRR-STD-MIB..................41
13. Intellectual Property Statement...........................41
1. Introduction
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 as defined in [RFC4090]. This MIB module should
be used in conjunction with [RFC3812] and [RFC3813].
Comments should be made directly to the MPLS mailing list at
mpls@uu.net.
1.1. Conventions Used in This Document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC-2119 [RFC2119].
2. Terminology
This document uses terminology from the document describing the MPLS
architecture [RFC3031] and from the document describing MPLS Fast
Reroute [RFC4090].
3. 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].
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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 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].
4. Brief Description of MIB Module Objects.
The specification [RFC4090] stipulates two different approaches
to implementing MPLS TE fast reroute: bypass and facility
backup. As such, the MIB module defined in this document
is split into three major components: general, bypass and
facility backup. The first section defines 2 tables
(mplsFrrConstTable and mplsFrrTunARHopTable) containing objects
that apply to any MPLS LSR implementing MPLS TE fast reroute
functionality. The latter two sections define objects specific to
one of the two methods. Given that common practice has shown that
LSRs do not implement both facility and bypass methods
at the same time, the Agent Compliance section in the module
defined herein is divided into portions, one for each method
allowing any LSR to implement only the objects applicable to
the method they have implemneted.
4.1. mplsFrrConstTable
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 LSPs (detour LSPs or bypass tunnels).
This table is used at the ingress node of the protected TE
tunnel instance to configure backup LSP setup constraints.
4.2. mplsFrrTunARHopTable
This table extends mplsTunnelARHop table (defined in the
MPLS-TE-STD-MIB [RFC3812]) with fast-reroute objects which
specify the local protection type or types of availability
as well as what type or types are actally in-use for each
tunnel hop traversed by a protected TE tunnel.
The support of this table is only required when the
Record Route Object (RRO) is supported by the implementation.
4.3. mplsFrrOne2OnePlrTable
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The mplsFrrOne2OnePlrTable is an optional table that contains
lists of PLRs that initiated detour LSPs to protect tunnel
instances. As such, it is only required for LSRs implementing
the detour backup method. In these cases, the detour LSPs
are reflected in the mplsFrrDetourTable.
4.4. mplsFrrDetourTable
The mplsFrrDetourTable shows the detour LSPs in each node
(ingress, transit and egress nodes). An entry of 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) lower 16 bits: - protected TE tunnel instance
- uniquely identifies a protected LSP within
a tunnel.
2) higher 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 (mplsFrrOne2OnePlrTunIngrLSRId):
set to the ingress node of an LSP protected by a detour.
- egress node's LSR ID (mplsFrrOne2OnePlrTunEgrLSRId):
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 will have an entry in
the mplsTunnelTable (defined in the MPLS-TE-STD-MIB[RFC3812]).
In the mplsTunnelTable, the higher 16 bits of the tunnel instance
SHOULD be used as detour instance. Note that for the protected
TE tunnel instances, the higher 16 bits of the tunnel instance
MUST all be set to zero.
This table is optional and is only required in case
mplsFrrOne2OnePlrTable is supported.
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4.5. mplsFrrFacRouteDBTable
The mplsFrrDBTable 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 defined
to protect the tunnels traversing an interface.
The protecting tunnel is defined to exist on the PLR in
the MPLS TE fast reroute specification. Protected tunnels are
the LSPs that traverse the protected link.
5. MPLS-FRR-STD-MIB MIB Module Definitions
-- Start of MPLS-FRR-STD-MIB
MPLS-FRR-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE,
Integer32, Unsigned32,
NOTIFICATION-TYPE, Gauge32
FROM SNMPv2-SMI -- [RFC2578]
MODULE-COMPLIANCE, OBJECT-GROUP,
NOTIFICATION-GROUP
FROM SNMPv2-CONF -- [RFC2580]
TruthValue, RowStatus, StorageType
FROM SNMPv2-TC -- [RFC2579]
InterfaceIndex, InterfaceIndexOrZero,
ifGeneralInformationGroup,
ifCounterDiscontinuityGroup
FROM IF-MIB -- [RFC2863]
MplsTunnelIndex, MplsTunnelInstanceIndex,
MplsLsrIdentifier, MplsBitRate, mplsStdMIB
FROM MPLS-TC-STD-MIB -- [RFC3811]
mplsTunnelGroup, mplsTunnelScalarGroup,
mplsTunnelARHopListIndex, mplsTunnelARHopIndex
FROM MPLS-TE-STD-MIB -- [RFC3812]
InetAddressType, InetAddress
FROM INET-ADDRESS-MIB -- [RFC3291]
;
mplsFrrMIB MODULE-IDENTITY
LAST-UPDATED
"200508011200Z" -- 01 August 2005 12:00:00 GMT
ORGANIZATION
"Multiprotocol Label Switching (MPLS) Working Group"
CONTACT-INFO
"
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Riza Cetin
Email: riza.cetin@alcatel.be
Thomas D. Nadeau
Email: tnadeau@cisco.com
Stefaan De Cnodder
Email: Stefaan.de_cnodder@alcatel.be
Der-Hwa Gan
Email: dhg@juniper.net
"
DESCRIPTION
"Copyright (C) 2006 The Internet Society. This
MIB module is part of RFC 4327; see the RFC itself
for full legal notices.
This MIB module contains managed object definitions for
MPLS Traffic Engineering Fast Reroute as defined in
RFC4090."
-- Revision history.
REVISION
"200508011200Z" -- 01 August 2005 12:00:00 GMT
DESCRIPTION
"Initial version. Published as RFC xxxx."
-- RFC-editor pls fill in xxxx
::= { mplsStdMIB XXX } -- RFC-editor please fill in
-- XXX with value assigned by IANA,
-- see section 18.1 for details
-- Top level components of this MIB module.
mplsFrrNotif OBJECT IDENTIFIER ::= { mplsFrrMIB 0 }
mplsFrrScalars OBJECT IDENTIFIER ::= { mplsFrrMIB 1 }
mplsFrrObjects OBJECT IDENTIFIER ::= { mplsFrrMIB 2 }
-- objects that work for either method of FRR
mplsFrrGeneralObjects OBJECT IDENTIFIER ::= { mplsFrrObjects 1 }
-- objects defined for 1-to-1 style FRR
mplsFrrOne2OneObjects OBJECT IDENTIFIER ::= { mplsFrrObjects 2 }
-- objects defined for Facility Backup style FRR
mplsFrrFacObjects OBJECT IDENTIFIER ::= { mplsFrrObjects 3 }
mplsFrrConformance OBJECT IDENTIFIER ::= { mplsFrrMIB 3 }
-- MPLS Fast Reroute scalars.
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mplsFrrDetourIncoming OBJECT-TYPE
SYNTAX Integer32 (-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of detour LSPs entering the device (greater
than or equal to 0) if mplsFrrProtectionMethod
is set to oneToOneBackup(1), or -1 if
mplsFrrProtectionMethod is set to
facilityBackup(2)."
DEFVAL { 0 }
::= { mplsFrrScalars 1 }
mplsFrrDetourOutgoing OBJECT-TYPE
SYNTAX Integer32 (-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of detour LSPs leaving the device (greater
than or equal to 0) if mplsFrrProtectionMethod
is set to oneToOneBackup(1), or -1 if
mplsFrrProtectionMethod is set to
facilityBackup(2)."
DEFVAL { 0 }
::= { mplsFrrScalars 2 }
mplsFrrDetourOriginating OBJECT-TYPE
SYNTAX Integer32(-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of detour LSPs originating at this PLR
(greater than or equal to 0) if
mplsFrrProtectionMethod is set to oneToOneBackup(1).
This object MUST return -1 if the
mplsFrrProtectionMethod is set to facilityBackup(2)."
DEFVAL { 0 }
::= { mplsFrrScalars 3 }
mplsFrrSwitchover OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of tunnel instances for which this LSR
is the ingress that are currently using a detour
or bypass LSP to reach their egress."
DEFVAL { 0 }
::= { mplsFrrScalars 4 }
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mplsFrrConfIfs OBJECT-TYPE
SYNTAX Integer32(-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates the number of MPLS interfaces configured for
protection by the FRR feature if
mplsFrrProtectionMethod
is set to facilityBackup(2), otherwise this value
MUST return -1 to indicate that LSPs traversing any
interface are not protected."
DEFVAL { 0 }
::= { mplsFrrScalars 5 }
mplsFrrActProtectedIfs OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates the number of interfaces currently being
protected by the FRR feature if
mplsFrrProtectionMethod is set to
facilityBackup(2), otherwise this value should return
0 to indicate that LSPs traversing any interface may
not be protected. This value MUST be less than or equal
to mplsFrrConfIfs except when mplsFrrConfIfs is
set to -1, in which case the value of this object
is meaningless and SHOULD be ignored."
DEFVAL { 0 }
::= { mplsFrrScalars 6 }
mplsFrrConfProtectionTuns OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates the number of bypass tunnels configured to
protect TE tunnels on this LSR using the FRR feature
if mplsFrrProtectionMethod is set to
facilityBackup(2), otherwise this value MUST return
0 and SHOULD be ignored."
DEFVAL { 0 }
::= { mplsFrrScalars 7 }
mplsFrrActProtectionTuns OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"Indicates the number of bypass tunnels indicated in
mplsFrrConfProtectionTuns whose operStatus
is up(1) indicating that they are currently protecting
TE tunnels on this LSR using the FRR feature. This
object MUST return 0 if mplsFrrProtectionMethod
is set to oneToOneBackup(1)."
DEFVAL { 0 }
::= { mplsFrrScalars 8 }
mplsFrrActProtectedLSPs OBJECT-TYPE
SYNTAX Unsigned32
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. If mplsFrrProtectionMethod
is set to facilityBackup(2) this object MUST return
0."
DEFVAL { 0 }
::= { mplsFrrScalars 9 }
mplsFrrProtectionMethod OBJECT-TYPE
SYNTAX INTEGER { oneToOneBackup(1),
facilityBackup(2)
}
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 affect after being modified."
::= { mplsFrrScalars 10 }
mplsFrrNotifsEnabled 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."
DEFVAL { false }
::= { mplsFrrScalars 11 }
mplsFrrNotifMaxRate OBJECT-TYPE
SYNTAX Unsigned32
UNITS "Notifications per Second"
MAX-ACCESS read-write
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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. A value of 0
means no throttling is applied and events may be
notified at the rate at which they occur."
DEFVAL { 0 }
::= { mplsFrrScalars 12 }
--
-- 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 table
mplsFrrConstTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsFrrConstEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table shows backup LSP setup constraints."
::= { mplsFrrGeneralObjects 1 }
mplsFrrConstEntry OBJECT-TYPE
SYNTAX MplsFrrConstEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents detour LSP or
bypass tunnel setup constraints for a tunnel
instance to be protected by detour LSPs or a
tunnel.
Agents must only allow entries in this table to
be created for tunnel instances that require
fast-reroute as indicated by the presense of the
FAST_REROUTE Object in the signaling for the
LSP in question, as speciifed in section 4.1 of
RFC4090.
Entries indexed with mplsFrrConstIfIndex set to 0
apply to all interfaces on this device for which the
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FRR feature can operate.
Note that as per [RFC3812] the mplsTunnelInstance
object set to a value of 0 indicates that the
mplsTunnelEntry contains at 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, in these cases, 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
"
INDEX { mplsFrrConstIfIndex,
mplsFrrConstTunnelIndex,
mplsFrrConstTunnelInstance
}
::= { mplsFrrConstTable 1 }
MplsFrrConstEntry ::= SEQUENCE {
mplsFrrConstIfIndex InterfaceIndexOrZero,
mplsFrrConstTunnelIndex MplsTunnelIndex,
mplsFrrConstTunnelInstance MplsTunnelInstanceIndex,
mplsFrrConstProtectionType INTEGER,
mplsFrrConstHopLimit Unsigned32,
mplsFrrConstBandwidth MplsBitRate,
mplsFrrConstStorageType StorageType,
mplsFrrConstRowStatus RowStatus
}
mplsFrrConstIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Uniquely identifies an interface which a fast reroute
protection tunnel is configured to potentially protect
in the event of a fault. Entries with this index set to
0 indicates that the protection tunnel configured protects
all interfaces on this device (i.e.: node protection)."
::= { mplsFrrConstEntry 1 }
mplsFrrConstTunnelIndex OBJECT-TYPE
SYNTAX MplsTunnelIndex
MAX-ACCESS not-accessible
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STATUS current
DESCRIPTION
"Uniquely identifies a tunnel for which is configured
to possibly protect the interface(s) specified by
mplsFrrConstIfIndex in the event of a fault as
must exist in the mplsTunnelTable."
REFERENCE "mplsTunnelTable from RFC3812."
::= { mplsFrrConstEntry 2 }
mplsFrrConstTunnelInstance 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 RFC3812). 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
as to make identication of backup LSPs easier:
- lower 16 bits : protected tunnel instance
- higher 16 bits: must be all zeros"
::= { mplsFrrConstEntry 3 }
mplsFrrConstProtectionType 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
setup to protect a particular link's resources.
nodeProtection(2) indicates that this tunnel is
setup to protect an entire node from failure.
"
DEFVAL { nodeProtection }
::= { mplsFrrConstEntry 4 }
mplsFrrConstHopLimit OBJECT-TYPE
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SYNTAX Unsigned32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The maximum number of hops that the detour LSP may traverse."
REFERENCE
"RFC4090."
DEFVAL { 32 }
::= { mplsFrrConstEntry 5 }
mplsFrrConstBandwidth OBJECT-TYPE
SYNTAX MplsBitRate
UNITS "kilobits per second"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The maximum bandwidth specifically reserved for detour
LSPs using this tunnel, in units of thousands of bits
per second (Kbps). Note that setting this value to 0
indicates best-effort treatment."
DEFVAL { 0 }
::= { mplsFrrConstEntry 6 }
mplsFrrConstStorageType 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."
REFERENCE
"RFC2579"
DEFVAL { volatile }
::= { mplsFrrConstEntry 7 }
mplsFrrConstRowStatus 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 by the agent except mplsFrrConstRowStatus
and mplsFrrConstStorageType."
::= { mplsFrrConstEntry 8 }
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-- MPLS Fast Reroute Tunnel Actual Route Hop table
mplsFrrTunARHopTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsFrrTunARHopEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table sparsely extends mplsTunnelARHopTable defined
in the MPLS-TE-STD-MIB 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. Note that object availability in this table
is governed by the support of the Record Route Object
in the RSVP-TE signaling of the implementation."
::= { mplsFrrGeneralObjects 2 }
mplsFrrTunARHopEntry OBJECT-TYPE
SYNTAX MplsFrrTunARHopEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This entry contains fast-reroute protection status of a single
protected tunnel hop."
INDEX {
mplsTunnelARHopListIndex,
mplsTunnelARHopIndex
}
::= { mplsFrrTunARHopTable 1 }
MplsFrrTunARHopEntry ::= SEQUENCE {
mplsFrrTunARHopProtectType BITS,
mplsFrrTunARHopProtectTypeInUse BITS
}
mplsFrrTunARHopProtectType OBJECT-TYPE
SYNTAX BITS { path(0), node(1), link(2) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object indicates the protection type or types of the
associated path hop object. Note that since this object is a
BITS type, one, none or all of the bits may be set to indicate
various combinations of protection types."
REFERENCE
"See section 4 of RFC4090 where the SESSION_ATTRIBUTE
and RECORD_ROUTE objects are extended to
support bandwidth and node protection features."
::= { mplsFrrTunARHopEntry 1 }
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mplsFrrTunARHopProtectTypeInUse OBJECT-TYPE
SYNTAX BITS { path(0), node(1),
link(2) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object indicates the protection type or types that are
currently in use by the associated path hop object.
Note that since this object is a BITS type, one, none or all
of the bits may be set to indicate various combinations of
protection types. If no bits are set, this indicates that
no protection types are in use."
REFERENCE
"See section 4 of RFC4090 where the SESSION_ATTRIBUTE
and RECORD_ROUTE objects are extended to
support bandwidth and node protection features."
::= { mplsFrrTunARHopEntry 2 }
--
-- One-to-One Specific Tables
--
-- Tables in this section pertain only to the 1-1
-- 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 that traverse this node."
::= { mplsFrrOne2OneObjects 1 }
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 agent as instructed
by an MPLS signaling protocol."
INDEX { mplsFrrOne2OnePlrTunIdx, -- from MPLS-TE-STD-MIB
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mplsFrrOne2OnePlrTunDetourInst,-- mplsTunnelTable
mplsFrrOne2OnePlrTunIngrLSRId, -- Tunnels must exist
mplsFrrOne2OnePlrTunEgrLSRId, -- a priori
mplsFrrOne2OnePlrId }
::= { mplsFrrOne2OnePlrTable 1 }
MplsFrrOne2OnePlrEntry ::= SEQUENCE {
mplsFrrOne2OnePlrTunIdx MplsTunnelIndex,
mplsFrrOne2OnePlrTunDetourInst MplsTunnelInstanceIndex,
mplsFrrOne2OnePlrTunIngrLSRId MplsLsrIdentifier,
mplsFrrOne2OnePlrTunEgrLSRId MplsLsrIdentifier,
mplsFrrOne2OnePlrId MplsLsrIdentifier,
mplsFrrOne2OnePlrSenderAddrType InetAddressType,
mplsFrrOne2OnePlrSenderAddr InetAddress,
mplsFrrOne2OnePlrAvoidNAddrType InetAddressType,
mplsFrrOne2OnePlrAvoidNAddr InetAddress
}
mplsFrrOne2OnePlrTunIdx 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 }
mplsFrrOne2OnePlrTunDetourInst 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 }
mplsFrrOne2OnePlrTunIngrLSRId OBJECT-TYPE
SYNTAX MplsLsrIdentifier
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The purpose of this object is to uniquely identity a
tunnel within a network. When the MPLS signalling
protocol is rsvp(2) this value SHOULD mimic the
Extended Tunnel Id field in the SESSION object.
When the MPLS signalling protocol is crldp(3) this
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value SHOULD mimic the Ingress LSR Router ID field
in the LSPID TLV object."
REFERENCE
"RFC3209"
::= { mplsFrrOne2OnePlrEntry 3 }
mplsFrrOne2OnePlrTunEgrLSRId OBJECT-TYPE
SYNTAX MplsLsrIdentifier
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Specifies the egress LSR ID."
::= { 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."
::= { mplsFrrOne2OnePlrEntry 5 }
mplsFrrOne2OnePlrSenderAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
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-create
STATUS current
DESCRIPTION
"If mplsFrrOne2OnePlrSenderAddrType is set to ipv4(1),
then this value will contain the IPv4 address of this
detour instance's sender. This object is otherwise
insignificant and should contain a
value of 0."
::= { mplsFrrOne2OnePlrEntry 7 }
mplsFrrOne2OnePlrAvoidNAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"Denotes the address type of the node that this PLR tries to
avoid."
DEFVAL { ipv4 }
::= { mplsFrrOne2OnePlrEntry 8 }
mplsFrrOne2OnePlrAvoidNAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If mplsFrrOne2OnePlrAvoidNAddrType is set to ipv4(1), then
this value will contain the IPv4 address of the avoid node.
This object is otherwise insignificant and should contain
a value of 0.0.0.0, which should be ignored."
::= { mplsFrrOne2OnePlrEntry 9 }
-- MPLS One-To-One Fast Reroute Detour table.
mplsFrrDetourTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsFrrDetourEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table shows detour LSPs."
::= { mplsFrrOne2OneObjects 2 }
mplsFrrDetourEntry OBJECT-TYPE
SYNTAX MplsFrrDetourEntry
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 agent as instructed by an MPLS
signaling protocol. "
INDEX {
mplsFrrOne2OnePlrTunIdx, -- from MPLS-TE-STD-MIB
mplsFrrOne2OnePlrTunDetourInst, -- mplsTunnelTable
mplsFrrOne2OnePlrTunIngrLSRId, -- Tunnels must exist
mplsFrrOne2OnePlrTunEgrLSRId -- a priori
}
::= { mplsFrrDetourTable 1 }
MplsFrrDetourEntry ::= SEQUENCE {
mplsFrrDetourActive TruthValue,
mplsFrrDetourMerging INTEGER,
mplsFrrDetourMergedDetourInst MplsTunnelInstanceIndex
}
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mplsFrrDetourActive 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. This is only relevant for detours
originated by this node."
::= { mplsFrrDetourEntry 1 }
mplsFrrDetourMerging OBJECT-TYPE
SYNTAX INTEGER { none(1),
protectedTunnel(2),
detour(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value represents whether or not this detour is merged.
This value MUST be set to none(1) if this detour is not
merged.
This value MUST be set to protectedTunnel(2) if this detour
is merged with the protected tunnel. This value MUST be set
to detour(3) if this detour is merged with another detour
protecting the same tunnel."
::= { mplsFrrDetourEntry 2 }
mplsFrrDetourMergedDetourInst OBJECT-TYPE
SYNTAX MplsTunnelInstanceIndex
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value represents the instance of the detour with
which this detour is merged. This object is only valid
when mplsFrrDetourMerging is set to detour(3).
- lower 16 bits : protected tunnel instance
- higher 16 bits: detour instance"
::= { mplsFrrDetourEntry 3 }
--
-- Facility-based FRR-specific Tables
--
-- Tables in this section pertain only to the facility-
-- based style of FRR.
--
mplsFrrFacRouteDBTable OBJECT-TYPE
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SYNTAX SEQUENCE OF MplsFrrFacRouteDBEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The mplsFrrDBTable provides information about the fast
reroute database. Each entry belongs to a protected
interface, protecting backup tunnel and protected tunnel.
MPLS interfaces defined on this node are protected by
backup tunnels and are indicated by the index
mplsFrrFacRouteProtIfIdx. If the interface index is set
to 0, this indicates that the remaining indexes apply
to all configured protected interfaces.
The protecting tunnel is indicated by the second two
indexes (mplsTunnelIndex and mplsTunnelInstance) 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 RFC3812, but it may also be
defined using the following semantics:
- lower 16 bits : protected tunnel instance
- higher 16 bits: must be all zeros
"
::= { mplsFrrFacObjects 1 }
mplsFrrFacRouteDBEntry OBJECT-TYPE
SYNTAX MplsFrrFacRouteDBEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the mplsFrrDBTable 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 MIB module for
additional information about the protecting and protected
tunnels, and the ifEntry in the IF-MIB MIB module
for the protected interface."
INDEX {
mplsFrrFacRouteProtIfIdx, -- protected ifIndex
mplsFrrFacRouteProtTunIdx, -- protecting TE tun
mplsFrrFacRouteBkupTunIdx, -- protected TE tun
mplsFrrFacRouteBkupTunInst, -- LSP
mplsFrrFacRouteBkupTunIngrLSRId,
mplsFrrFacRouteBkupTunEgrLSRId }
::= { mplsFrrFacRouteDBTable 1 }
MplsFrrFacRouteDBEntry ::= SEQUENCE {
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mplsFrrFacRouteProtIfIdx InterfaceIndex,
mplsFrrFacRouteProtTunIdx MplsTunnelIndex,
mplsFrrFacRouteBkupTunIdx MplsTunnelIndex,
mplsFrrFacRouteBkupTunInst MplsTunnelInstanceIndex,
mplsFrrFacRouteBkupTunIngrLSRId MplsLsrIdentifier,
mplsFrrFacRouteBkupTunEgrLSRId MplsLsrIdentifier,
mplsFrrFacRouteDBNumProtTunOnIf Gauge32,
mplsFrrFacRouteDBNumProtLspOnIf Gauge32,
mplsFrrFacRouteDBNumProtTun Gauge32,
mplsFrrFacRouteDBProtTunStatus INTEGER,
mplsFrrFacRouteDBProtTunResvBw MplsBitRate
}
mplsFrrFacRouteProtIfIdx 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
applies to all interfaces on this device for which
the FRR feature can operate."
::= { mplsFrrFacRouteDBEntry 1 }
mplsFrrFacRouteProtTunIdx 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 mplsFrrFacRouteIfProtIdx
(and all of the tunnels using this interface). Note
that the corresponding mplsTunnelInstance MUST BE
0 as per the indexing convention stipulated in RFC3812,
and thus can be inferred."
::= { mplsFrrFacRouteDBEntry 2 }
mplsFrrFacRouteBkupTunIdx 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 specified
interface as specified in the mplsFrrFacRouteIfProtIdx."
::= { mplsFrrFacRouteDBEntry 3 }
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mplsFrrFacRouteBkupTunInst 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 specified
interface as specified in the mplsFrrFacRouteIfProtIdx."
::= { mplsFrrFacRouteDBEntry 4 }
mplsFrrFacRouteBkupTunIngrLSRId 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 specified
interface as specified in the mplsFrrFacRouteIfProtIdx."
REFERENCE
"RFC3209, RFC3212"
::= { mplsFrrFacRouteDBEntry 5 }
mplsFrrFacRouteBkupTunEgrLSRId 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 specified
interface as specified in the mplsFrrFacRouteIfProtIdx."
::= { mplsFrrFacRouteDBEntry 6 }
mplsFrrFacRouteDBNumProtTunOnIf OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of backup tunnels protecting the specified
interface."
::= { mplsFrrFacRouteDBEntry 7 }
mplsFrrFacRouteDBNumProtLspOnIf OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of LSPs currently being protected on
the specified interface."
::= { mplsFrrFacRouteDBEntry 8 }
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mplsFrrFacRouteDBNumProtTun OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of tunnels protected on this interface."
::= { mplsFrrFacRouteDBEntry 9 }
mplsFrrFacRouteDBProtTunStatus OBJECT-TYPE
SYNTAX INTEGER {
active(1),
ready(2),
partial(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Specifies the state of the protected tunnel.
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 as not been fully
created."
::= { mplsFrrFacRouteDBEntry 10 }
mplsFrrFacRouteDBProtTunResvBw 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 protection tunnel for facility backup purposes.
This value is repeated here from the
MPLS-TE-STD-MIB 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 the one found
in the MPLS-TE-STD-MIB MIB module."
::= { mplsFrrFacRouteDBEntry 11 }
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-- Notifications
mplsFrrFacProtected NOTIFICATION-TYPE
OBJECTS { mplsFrrFacRouteDBNumProtTunOnIf,
mplsFrrFacRouteDBNumProtLspOnIf,
mplsFrrFacRouteDBNumProtTun,
mplsFrrFacRouteDBProtTunStatus,
mplsFrrFacRouteDBProtTunResvBw
}
STATUS current
DESCRIPTION
"This notification is generated when a tunnel running over an
interface as specified in the mplsFrrConstTable is initially
protected by the backup tunnel also specified in the
mplsFrrConstTable. 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
either issue this notification 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.
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 loading. Note also
that notifications MUST be generated in accordance with the
mplsFrrNotifMaxRate.
Note this notification only applicable to the facility based
fastreroute protection method, and should be ignored by
implementations that do not support this method."
::= { mplsFrrNotif 1 }
mplsFrrFacUnProtected NOTIFICATION-TYPE
OBJECTS { mplsFrrFacRouteDBNumProtTunOnIf,
mplsFrrFacRouteDBNumProtLspOnIf,
mplsFrrFacRouteDBNumProtTun,
mplsFrrFacRouteDBProtTunStatus,
mplsFrrFacRouteDBProtTunResvBw
}
STATUS current
DESCRIPTION
"This notification is generated when the final tunnel that is
being protected by a backup tunnel as specified in the
mplsFrrConstTable is restored to normal operation. This
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notification should not be generated for each restored tunnel,
as this may result in potential scaling issues with regard to
LSR performance and network loading. Note also that
notifications MUST be generated in accordance with the
mplsFrrNotifMaxRate.
Note this notification only applicable to the facility based
fastreroute protection method, and should be ignored by
implementations that do not support this method."
::= { mplsFrrNotif 2 }
-- Module Conformance Statement
mplsFrrGroups
OBJECT IDENTIFIER ::= {mplsFrrConformance 1 }
mplsFrrCompliances
OBJECT IDENTIFIER ::= {mplsFrrConformance 2 }
mplsFrrModuleFullCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statements for agents that support the
MPLS-FRR-STD-MIB 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 {
mplsFrrScalarGroup,
mplsFrrTunARHopGroup,
mplsFrrConstGroup
}
OBJECT mplsFrrConstRowStatus
SYNTAX RowStatus { active(1), notInService(2) }
WRITE-SYNTAX RowStatus { active(1), notInService(2),
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createAndGo(4), destroy(6)
}
DESCRIPTION "Support for createAndWait and notReady is
not required."
GROUP mplsFrrOne2OnePLRDetourGroup
DESCRIPTION
"This group is mandatory for devices which support
the one-to-one FRR mechanism, and is optional for
those which do not."
GROUP mplsFrrOne2OnePlrGroup
DESCRIPTION
"This group is mandatory for devices which support
the one-to-one FRR mechanism, and is optional for
those which do not."
GROUP mplsFrrFacRouteDBGroup
DESCRIPTION
"This group is mandatory for devices which support
the Facility Backup FRR mechanism, and is optional
for those which do not."
GROUP mplsFrrNotifGroup
DESCRIPTION
"This group is mandatory for devices which support
the Facility Backup FRR mechanism, and is optional
for those which do not."
::= { mplsFrrCompliances 1 }
mplsFrrModuleReadOnlyCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statements for agents that support the MPLS FRR
MIB."
MODULE
MANDATORY-GROUPS {
mplsFrrScalarGroup,
mplsFrrTunARHopGroup,
mplsFrrConstGroup
}
GROUP mplsFrrOne2OnePLRDetourGroup
DESCRIPTION
"This group is mandatory for devices which support
the one-to-one FRR mechanism, and is optional for
those which do not."
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GROUP mplsFrrOne2OnePlrGroup
DESCRIPTION
"This group is mandatory for devices which support
the one-to-one FRR mechanism, and is optional for
those which do not."
GROUP mplsFrrFacRouteDBGroup
DESCRIPTION
"This group is mandatory for devices which support
the Facility Backup FRR mechanism, and is optional
for those which do not."
GROUP mplsFrrNotifGroup
DESCRIPTION
"This group is mandatory for devices which support
the Facility Backup FRR mechanism, and is optional
for those which do not."
-- mplsFrrConstTable
OBJECT mplsFrrProtectionMethod
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsFrrConstProtectionType
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsFrrConstHopLimit
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsFrrConstStorageType
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsFrrConstRowStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
::= { mplsFrrCompliances 2 }
-- Units of conformance
mplsFrrScalarGroup OBJECT-GROUP
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OBJECTS {
mplsFrrDetourIncoming,
mplsFrrDetourOutgoing,
mplsFrrDetourOriginating,
mplsFrrSwitchover,
mplsFrrConfIfs,
mplsFrrActProtectedIfs,
mplsFrrConfProtectionTuns,
mplsFrrActProtectionTuns,
mplsFrrActProtectedLSPs,
mplsFrrProtectionMethod,
mplsFrrNotifsEnabled,
mplsFrrNotifMaxRate
}
STATUS current
DESCRIPTION
"Objects that are required to gather fast reroute statistics."
::= { mplsFrrGroups 1 }
mplsFrrConstGroup OBJECT-GROUP
OBJECTS {
mplsFrrConstProtectionType,
mplsFrrConstHopLimit,
mplsFrrConstBandwidth,
mplsFrrConstStorageType,
mplsFrrConstRowStatus
}
STATUS current
DESCRIPTION
"Objects that are required to configure fast reroute
constraints at the ingress LSR of the tunnel that requires
fast reroute service."
::= { mplsFrrGroups 2 }
mplsFrrTunARHopGroup OBJECT-GROUP
OBJECTS {
mplsFrrTunARHopProtectType,
mplsFrrTunARHopProtectTypeInUse
}
STATUS current
DESCRIPTION
"Objects that are required to present per hop fast-reroute
protection status."
::= { mplsFrrGroups 3}
mplsFrrOne2OnePLRDetourGroup OBJECT-GROUP
OBJECTS {
mplsFrrDetourActive,
mplsFrrDetourMerging,
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mplsFrrDetourMergedDetourInst
}
STATUS current
DESCRIPTION
"Objects that are required to present the detour LSP
information at the detour ingress, transit and egress LSRs."
::= { mplsFrrGroups 4 }
mplsFrrOne2OnePlrGroup OBJECT-GROUP
OBJECTS {
mplsFrrOne2OnePlrSenderAddrType,
mplsFrrOne2OnePlrSenderAddr,
mplsFrrOne2OnePlrAvoidNAddrType,
mplsFrrOne2OnePlrAvoidNAddr
}
STATUS current
DESCRIPTION
"Objects that are required to represent the FRR
One-2-One PLR information."
::= { mplsFrrGroups 5 }
mplsFrrFacRouteDBGroup OBJECT-GROUP
OBJECTS { mplsFrrFacRouteDBNumProtTunOnIf,
mplsFrrFacRouteDBNumProtLspOnIf,
mplsFrrFacRouteDBNumProtTun,
mplsFrrFacRouteDBProtTunStatus,
mplsFrrFacRouteDBProtTunResvBw
}
STATUS current
DESCRIPTION
"Objects that are required to represent the FRR
Facility Route Database information."
::= { mplsFrrGroups 6 }
mplsFrrNotifGroup NOTIFICATION-GROUP
NOTIFICATIONS { mplsFrrFacProtected,
mplsFrrFacUnProtected
}
STATUS current
DESCRIPTION
"Objects that are required to represent FRR notifications."
::= { mplsFrrGroups 7 }
END
-- End of MPLS-FRR-STD-MIB
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6. Security Considerations
It is clear that these MIB modules are potentially useful for
monitoring of MPLS LSRs supporting fast reroute. This
MIB module can also be used for configuration of certain objects,
and anything that can be configured can be incorrectly configured,
with potentially disastrous results.
There are a number of management objects defined in this MIB
module 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:
o the mplsFrrConst table and some objects in the
mplsFrrScalarGroup contain objects which may be used
to provision MPLS fast reroute features. Unauthorized
access to these objects could result in disruption of
traffic on the network. This is especially true if the
objects in question refer to previously provisioned protection
tunnels and configuration. The use of stronger
mechanisms such as SNMPv3 security should be considered where
possible. Specifically, SNMPv3 VACM and USM MUST be used with
any v3 agent which implements this MIB module. Administrators
should consider whether read access to these objects should
be allowed, since read access may be undesirable under certain
circumstances.
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:
o the mplsFrrOne2OnePlrTable, mplsFrrDetourTable, and
mplsFrrTunARHopTable tables and some objects
contained in the mplsFrrScalarGroup
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 performanc statistics.
Administrators not wishing to reveal this information should
consider these objects sensitive/vulnerable and take
precautions so they are not revealed.
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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 this MIB module.
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 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.
7. IANA Considerations
As described in the MPLS-TC-STD-MIB [RFC3811] MIB module, MPLS
related standards track MIB modules should be rooted under the
mplsStdMIB subtree. There is one MPLS-related
MIB module contained in this document. The following "IANA
Considerations" subsection requests IANA for a new assignment under
the mplsStdMIB subtree. New assignments can only be made via a
Standards Action as specified in [RFC2434].
7.1. IANA Considerations for MPLS-FRR-STD-MIB
The IANA is requested to assign { mplsStdMIB 12 } to the
MPLS-FRR-STD-MIB MIB module specified in this document.
8. Acknowledgments
We would like to thank Alia Atlas, Yeong Tai, Walter Vanhimbeeck,
Mike Piecuch, Adrien Grise, Kiran Koushik, and Adrian Farrel for
the helpful and colorful discussions about, editorial comments on
and contributions to this document.
9. References
9.1 Normative References
[RFC4090] Pan, P., Swallow, G., Atlas, A., "Fast Reroute
Extensions to RSVP-TE for LSP Tunnels", RFC4090,
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May 2005.
[RFC3812] Srinivasan, C., Viswanathan, A. and T. Nadeau,
"Multiprotocol Label Switching (MPLS) Traffic
Engineering Management Information
Base", RFC 3812, June 2004
[RFC3813] Srinivasan, C., Viswanathan, A. and Nadeau, T.,
"MPLS Label Switch Router Management Information Base ",
RFC 3813, June 2004
[RFC3811] Nadeau, T. and J. Cucchiara, "Definition of Textual
Conventions and for Multiprotocol Label Switching (MPLS)
Management", RFC 3811, June 2004.
[RFC2119] S. Bradner, "Key Words for use in RFCs to Indicate
Requirement Levels", RFC 2119, BCP 14, March 1997.
[RFC3291] Daniele, M., Haberman, B., Routhier, S., and J.
Schoenwaelder, "TextualConventions for Internet Network
Addresses", RFC 3291, May 2002.
[RFC2863] McCloghrie, K. and F. Kastenholtz, "The Interfaces Group
MIB", RFC 2863, June 2000.
[RFC2578] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case,
J., Rose, M., and S. Waldbusser, "Structure of
Management Information Version 2 (SMIv2)", STD 58, RFC
2578, April 1999.
[RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case,
J., Rose, M., and S. Waldbusser, "Textual Conventions
for SMIv2", STD 58, RFC 2579, April 1999.
[RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case,
J., Rose, M., and S. Waldbusser, "Conformance
Statements for SMIv2", STD 58, RFC 2580, April 1999.
9.2 Informative Referencse
[RFC3031] Rosen, E., Viswanathan, A., and R. Callon, "Multiprotocol
Label Switching Architecture", RFC 3031, January 2001.
[RFC3410] Case, J., Mundy, R., Partain, D. and B. Stewart,
"Introduction and Applicability Statements for
Internet-Standard Management Framework", RFC 3410,
December 2002.
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[RFC2434] Narten, T. and H. Alvestrand., "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 2434,
October 1998.
10. Editors' Addresses
Riza Cetin
Alcatel
Francis Wellesplein 1
B-2018 Antwerp, Belgium
Email: riza.cetin@alcatel.be
Thomas D. Nadeau
Cisco Systems, Inc.
300 Beaverbrook Drive
Boxborough, MA
Phone: +1-978-936-1470
Email: tnadeau@cisco.com
8. Contributors' Addresses
Stefaan De Cnodder
Alcatel
Francis Wellesplein 1
B-2018 Antwerp, Belgium
Email: stefaan.de_cnodder@alcatel.be
Der-Hwa Gan
Juniper Networks, Inc.
1194 N. Mathilda Avenue
Sunnyvale, CA 94089
Email: dhg@juniper.net
Full Copyright Statement
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Copyright (C) The Internet Society (2006).
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MPLS Working Group Expires January 2007 [Page 34]
