Network Working Group C. Srinivasan Request for Comments: 3812 Bloomberg L.P. Category: Standards Track A. Viswanathan Force10 Networks, Inc. T. Nadeau Cisco Systems, Inc. June 2004
Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB)
Status of this Memo
This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2004).
Abstract
This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects for Multiprotocol Label Switching (MPLS) based traffic engineering (TE).
This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects for modeling a Multiprotocol Label Switching (MPLS) [RFC3031] based traffic engineering. This MIB module should be used in conjunction with the companion document [RFC3813] for MPLS based traffic engineering configuration and management.
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 BCP 14, RFC 2119, reference [RFC2119].
This document uses terminology from the MPLS architecture document [RFC3031] and MPLS Label Switch Router MIB [RFC3813]. Some frequently used terms are described next.
An explicitly routed LSP (ERLSP) is referred to as an MPLS tunnel. It consists of in-segment(s) and/or out-segment(s) at the egress/ingress LSRs, each segment being associated with one MPLS interface. These are also referred to as tunnel segments. Additionally, at an intermediate LSR, we model a connection as consisting of one or more in-segments and/or one or more out- segments. The binding or interconnection between in-segments and out-segments is performed using a cross-connect. These objects are defined in the MPLS Label Switch Router MIB [RFC3813].
For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410].
Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB objects are generally accessed through the Simple Network Management Protocol (SNMP). Objects in the MIB are defined using the mechanisms defined in the Structure of Management Information (SMI). This memo specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580].
The MPLS traffic engineering MIB module is designed to satisfy the following requirements and constraints:
- The MIB module supports configuration of point-to-point unidirectional tunnels.
- MPLS tunnels need not be interfaces, but it is possible to configure a tunnel as an interface.
- The MIB module supports tunnel establishment via an MPLS signalling protocol wherein the tunnel parameters are specified using this MIB module at the head end of the LSP, and end-to-end tunnel LSP establishment is accomplished via signalling. The MIB module also supports manually configured tunnels, i.e., those for which label associations at each hop of the tunnel LSP are provisioned by the administrator via the LSR MIB [RFC3813].
- The MIB module supports persistent, as well as non-persistent tunnels.
Traffic engineering support for MPLS tunnels requires the following configuration:
- Setting up MPLS tunnels along with appropriate configuration parameters.
- Configuring tunnel for loose and strict source routed hops.
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These actions may need to be accompanied by corresponding actions using [RFC3813] to establish and configure tunnel segments, if this is done manually. Also, the in-segment and out-segment performance tables, mplsInSegmentPerfTable, and mplsOutSegmentPerfTable [RFC3813], should be used to determine performance of the tunnels and tunnel segments, in addition to mplsTunnelPerfTable in this MIB module.
The MIB module objects for performing these actions consist of the following tables:
- Tunnel table (mplsTunnelTable) for setting up MPLS tunnels.
- Resource table (mplsTunnelResourceTable) for setting up the tunnel resources.
- Tunnel specified, actual, and computed hop tables (mplsTunnelHopTable, mplsTunnelARHopTable, and mplsTunnelCHopTable) for strict and loose source routed MPLS tunnel hops.
- Tunnel performance table (mplsTunnelPerfTable) for measuring tunnel performance.
- CRLDP resource table (mplsTunnelCRLDPResTable) for specifying resource objects applicable to tunnels signaled using CRLDP.
These tables are described in the subsequent sections.
The objects described in this section support the functionality described in documents [RFC3209] and [RFC3212]. The tables support both manually configured and signaled tunnels.
The mplsTunnelTable allows new MPLS tunnels to be created between an MPLS LSR and a remote endpoint, and existing tunnels to be reconfigured or removed. Note that we only support point-to-point tunnels, although multipoint-to-point and point-to-multipoint connections are supported by an LSR acting as a cross-connect. Each MPLS tunnel can thus have one out-segment originating at an LSR and/or one in-segment terminating at that LSR.
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mplsTunnelTable does not define the in and out segments forming the tunnel. Instead, these are defined by creating rows in the in- segment and out-segment tables, defining relationships in the cross- connect table, and referring to these rows in the mplsTunnelTable using a cross-connect index, mplsTunnelXCIndex. These segment and cross-connect related objects are defined in [RFC3813].
mplsTunnelResourceTable is used to indicate the resources required for a tunnel. Multiple tunnels may share the same resources by pointing to the same entry in this table. Tunnels that do not share resources must point to separate entries in this table.
mplsTunnelHopTable is used to indicate the hops, strict or loose, for an MPLS tunnel defined in mplsTunnelTable, when it is established via signalling. Multiple tunnels may share the same hops by pointing to the same entry in this table. Each row also has a secondary index, mplsTunnelHopIndex, corresponding to the next hop of this tunnel. The scalar mplsTunnelMaxHops indicates the maximum number of hops that can be specified on each tunnel supported by this LSR.
At transit LSRs, this table contains the hops, strict or loose, that apply to the downstream part of this tunnel only. This corresponds to the requested path received through the signaling protocol.
mplsTunnelARHopTable is used to indicate the actual hops traversed by a tunnel as reported by the MPLS signalling protocol after the tunnel is setup. The support of this table is optional since not all MPLS signalling protocols may support this feature.
At transit LSRs, this table contains the actual hops traversed by the tunnel along its entire length if that information is available. This corresponds to the recorded path reported by the MPLS signalling protocol, possibly derived from multiple signaling messages.
mplsTunnelCHopTable lists the actual hops computed by a constraint- based routing algorithm based on the mplsTunnelHopTable for the MPLS signalling protocol in use. The support of this table is optional since not all implementations may support computation of hop lists using a constraint-based routing protocol.
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At transit LSRs, this table contains the hops computed to apply to the downstream part of this tunnel. This corresponds to the requested path signaled from this LSR through the signaling protocol.
mplsTunnelCRLDPResTable contains resource information for those tunnels that are signaled using CRLDP [RFC3212]. This is a sparse extension to mplsTunnelResourceTable and is also indexed by mplsTunnelResourceIndex. As with mplsTunnelResourceTable, multiple tunnels may share the same resources by pointing to the same entry in this table. Tunnels that do not share resources must point to separate entries in this table. The mplsTunnelCRLDPResTable may be supported only by implementations that support the CR-LDP signaling protocol.
64-bit counters are provided in this MIB module for high-speed interfaces where the use of 32-bit counters might be impractical. The requirements on the use of 32-bit and 64-bit counters (copied verbatim from [RFC2863]) are as follows:
For interfaces that operate at 20,000,000 (20 million) bits per second or less, 32-bit byte and packet counters MUST be supported. For interfaces that operate faster than 20,000,000 bits/second, and slower than 650,000,000 bits/second, 32-bit packet counters MUST be supported and 64-bit octet counters MUST be supported. For interfaces that operate at 650,000,000 bits/second or faster, 64-bit packet counters AND 64-bit octet counters MUST be supported.
8. Application of the Interface Group to MPLS Tunnels
The Interfaces Group of MIB II defines generic managed objects for managing interfaces. This memo contains the media-specific extensions to the Interfaces Group for managing MPLS Tunnels as logical interfaces.
This memo assumes the interpretation of the Interfaces Group to be in accordance with [RFC2863] which states that the interfaces table (ifTable) contains information on the managed resource's interfaces and that each sub-layer below the internetwork layer of a network
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interface is considered an interface. Thus, the MPLS interface is represented as an entry in the ifTable. The inter-relation of entries in the ifTable is defined by the Interfaces Stack Group defined in [RFC2863].
When using MPLS Tunnels as interfaces, the interface stack table might appear as follows:
In the above diagram, "Underlying Layer" refers to the ifIndex of any interface type for which MPLS internetworking has been defined. Examples include ATM, Frame Relay, and Ethernet.
8.1. Support of the MPLS Tunnel Interface by ifTable
Some specific interpretations of the ifTable for those MPLS tunnels represented as interfaces follow:
Object Use for the MPLS tunnel.
ifIndex Each MPLS tunnel is represented by an ifEntry.
ifDescr Description of the MPLS tunnel.
ifType The value that is allocated for the MPLS tunnel is 150.
ifSpeed The total bandwidth in bits per second for use by the MPLS tunnel.
This section contains an example of which MIB objects should be modified if one would like to create a best effort, loosely routed, unidirectional traffic engineered tunnel, which spans two hops of a simple network. Note that these objects should be created on the "head-end" LSR. Those objects relevant to illustrating the relationships amongst different tables are shown here. Other objects may be needed before conceptual row activation can happen.
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The RowStatus values shown in this section are those to be used in the set request, typically createAndGo(4) which is used to create the conceptual row and have its status immediately set to active. A subsequent retrieval operation on the conceptual row will return a different value, such as active(1). Please see [RFC2579] for a detailed discussion on the use of RowStatus.
The next two instances of mplsTunnelHopEntry are used to denote the hops this tunnel will take across the network.
The following denotes the beginning of the tunnel, or the first hop. We have used the fictitious LSR identified by "192.168.100.1" as our example head-end router.
The following denotes the end of the tunnel, or the last hop in our example. We have used the fictitious LSR identified by "192.168.101.1" as our end router.
The following denotes the configured tunnel "head" entry:
In mplsTunnelTable:
{ mplsTunnelIndex = 1, mplsTunnelInstance = 0, mplsTunnelIngressLSRId = 192.168.100.1, mplsTunnelEgressLSRId = 192.168.101.1, mplsTunnelName = "My first tunnel", mplsTunnelDescr = "Here to there", mplsTunnelIsIf = true (1), -- RowPointer MUST point to the first accessible column mplsTunnelXCPointer = 0.0, mplsTunnelSignallingProto = none (1), mplsTunnelSetupPrio = 0, mplsTunnelHoldingPrio = 0, mplsTunnelSessionAttributes = 0, mplsTunnelLocalProtectInUse = false (0), -- RowPointer MUST point to the first accessible column mplsTunnelResourcePointer = mplsTunnelResourceMaxRate.5, mplsTunnelInstancePriority = 1, mplsTunnelHopTableIndex = 1, mplsTunnelIncludeAnyAffinity = 0, mplsTunnelIncludeAllAffinity = 0, mplsTunnelExcludeAnyAffinity = 0, mplsTunnelPathInUse = 1,
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mplsTunnelRole = head (1), -- Mandatory parameters needed to activate the row go here mplsTunnelRowStatus = createAndGo (4) }
Note that any active or signaled instances of the above tunnel would appear with the same primary mplsTunnelIndex, but would have values greater than 0 for mplsTunnelInstance. They would also have other objects such as the mplsTunnelXCPointer set accordingly.
RowPointer is a textual convention used to identify a conceptual row in a conceptual table in a MIB by pointing to the first accessible object. In this MIB module, in mplsTunnelTable, the objects mplsTunnelXCPointer and mplsTunnelResourcePointer are of type RowPointer. The object mplsTunnelXCPointer points to a specific entry in the mplsXCTable [RFC3813]. This entry in the mplsXCTable is the associated LSP for the given MPLS tunnel entry. The object mplsTunnelResourcePointer points to a specific entry in a traffic parameter table. An example of such a traffic parameter table is mplsTunnelResourceTable. It indicates a specific instance of a traffic parameter entry that is associated with a given MPLS tunnel entry. These RowPointer objects MUST point to the first instance of the first accessible columnar object in the appropriate conceptual row in order to allow the manager to find the appropriate corresponding entry in either MPLS-LSR-STD-MIB [RFC3813] or MPLS-TE- STD-MIB. If object mplsTunnelXCPointer returns zeroDotZero, it implies that there is no LSP associated with that particular instance of tunnel entry. If object mplsTunnelResourcePointer returns zeroDotZero, it implies that there is no QoS resource associated with that particular instance of tunnel entry.
Arun Viswanathan Force10 Networks, Inc. Email: arunv@force10networks.com
Thomas D. Nadeau Cisco Systems, Inc. Email: tnadeau@cisco.com
Comments about this document should be emailed directly to the MPLS working group mailing list at mpls@uu.net." DESCRIPTION "Copyright (C) The Internet Society (2004). The initial version of this MIB module was published in RFC 3812. For full legal notices see the RFC itself or see: http://www.ietf.org/copyrights/ianamib.html
This MIB module contains managed object definitions for MPLS Traffic Engineering (TE) as defined in: 1. Extensions to RSVP for LSP Tunnels, Awduche et al, RFC 3209, December 2001 2. Constraint-Based LSP Setup using LDP, Jamoussi
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(Editor), RFC 3212, January 2002 3. Requirements for Traffic Engineering Over MPLS, Awduche, D., Malcolm, J., Agogbua, J., O'Dell, M., and J. McManus, [RFC2702], September 1999"
-- Revision history.
REVISION "200406030000Z" -- June 3, 2004 DESCRIPTION "Initial version issued as part of RFC 3812."
mplsTunnelConfigured OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of tunnels configured on this device. A tunnel is considered configured if the mplsTunnelRowStatus is active(1)." ::= { mplsTeScalars 1 }
mplsTunnelActive OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of tunnels active on this device. A tunnel is considered active if the mplsTunnelOperStatus is up(1)." ::= { mplsTeScalars 2 }
mplsTunnelTEDistProto OBJECT-TYPE
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SYNTAX BITS { other (0), ospf (1), isis (2) } MAX-ACCESS read-only STATUS current DESCRIPTION "The traffic engineering distribution protocol(s) used by this LSR. Note that an LSR may support more than one distribution protocol simultaneously." ::= { mplsTeScalars 3 }
mplsTunnelMaxHops OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "The maximum number of hops that can be specified for a tunnel on this device." ::= { mplsTeScalars 4 }
mplsTunnelNotificationMaxRate OBJECT-TYPE SYNTAX Unsigned32 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. A value of 0 means no throttling is applied and events may be notified at the rate at which they occur." DEFVAL { 0 } ::= { mplsTeScalars 5 }
-- End of MPLS Tunnel scalars.
-- MPLS tunnel table.
mplsTunnelIndexNext OBJECT-TYPE SYNTAX IndexIntegerNextFree (0..65535) MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains an unused value for
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mplsTunnelIndex, or a zero to indicate that none exist. Negative values are not allowed, as they do not correspond to valid values of mplsTunnelIndex.
Note that this object offers an unused value for an mplsTunnelIndex value at the ingress side of a tunnel. At other LSRs the value of mplsTunnelIndex SHOULD be taken from the value signaled by the MPLS signaling protocol. " ::= { mplsTeObjects 1 }
mplsTunnelTable OBJECT-TYPE SYNTAX SEQUENCE OF MplsTunnelEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The mplsTunnelTable allows new MPLS tunnels to be created between an LSR and a remote endpoint, and existing tunnels to be reconfigured or removed. Note that only point-to-point tunnel segments are supported, although multipoint-to-point and point- to-multipoint connections are supported by an LSR acting as a cross-connect. Each MPLS tunnel can thus have one out-segment originating at this LSR and/or one in-segment terminating at this LSR." ::= { mplsTeObjects 2 }
mplsTunnelEntry OBJECT-TYPE SYNTAX MplsTunnelEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents an MPLS tunnel. An entry can be created by a network administrator or by an SNMP agent as instructed by an MPLS signalling protocol. Whenever a new entry is created with mplsTunnelIsIf set to true(1), then a corresponding entry is created in ifTable as well (see RFC 2863). The ifType of this entry is mplsTunnel(150).
A tunnel entry needs to be uniquely identified across a MPLS network. Indices mplsTunnelIndex and mplsTunnelInstance uniquely identify a tunnel on the LSR originating the tunnel. To uniquely identify a tunnel across an MPLS network requires
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index mplsTunnelIngressLSRId. The last index mplsTunnelEgressLSRId is useful in identifying all instances of a tunnel that terminate on the same egress LSR." REFERENCE "1. RFC 2863 - The Interfaces Group MIB, McCloghrie, K., and F. Kastenholtz, June 2000 " INDEX { mplsTunnelIndex, mplsTunnelInstance, mplsTunnelIngressLSRId, mplsTunnelEgressLSRId } ::= { mplsTunnelTable 1 }
mplsTunnelIndex OBJECT-TYPE SYNTAX MplsTunnelIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies a set of tunnel instances between a pair of ingress and egress LSRs. Managers should obtain new values for row creation in this table by reading mplsTunnelIndexNext. When the MPLS signalling protocol is rsvp(2) this value SHOULD be equal to the value signaled in the Tunnel Id of the Session object. When the MPLS signalling protocol is crldp(3) this value SHOULD be equal to the value signaled in the LSP ID." ::= { mplsTunnelEntry 1 }
mplsTunnelInstance OBJECT-TYPE SYNTAX MplsTunnelInstanceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies a particular instance of a tunnel between a pair of ingress and egress LSRs. It is useful to identify multiple instances of tunnels for the purposes of backup and parallel tunnels. When the MPLS signaling protocol is rsvp(2) this value SHOULD be equal to the LSP Id of the Sender Template object. When the signaling protocol is crldp(3) there is no equivalent signaling object." ::= { mplsTunnelEntry 2 }
mplsTunnelIngressLSRId OBJECT-TYPE SYNTAX MplsExtendedTunnelId MAX-ACCESS not-accessible STATUS current DESCRIPTION "Identity of the ingress LSR associated with this tunnel instance. When the MPLS signalling protocol is rsvp(2) this value SHOULD be equal to the Tunnel
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Sender Address in the Sender Template object and MAY be equal to the Extended Tunnel Id field in the SESSION object. When the MPLS signalling protocol is crldp(3) this value SHOULD be equal to the Ingress LSR Router ID field in the LSPID TLV object." REFERENCE "1. RSVP-TE: Extensions to RSVP for LSP Tunnels, Awduche et al, RFC 3209, December 2001 2. Constraint-Based LSP Setup using LDP, Jamoussi (Editor), RFC 3212, January 2002" ::= { mplsTunnelEntry 3 }
mplsTunnelEgressLSRId OBJECT-TYPE SYNTAX MplsExtendedTunnelId MAX-ACCESS not-accessible STATUS current DESCRIPTION "Identity of the egress LSR associated with this tunnel instance." ::= { mplsTunnelEntry 4 }
mplsTunnelName OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-create STATUS current DESCRIPTION "The canonical name assigned to the tunnel. This name can be used to refer to the tunnel on the LSR's console port. If mplsTunnelIsIf is set to true then the ifName of the interface corresponding to this tunnel should have a value equal to mplsTunnelName. Also see the description of ifName in RFC 2863." REFERENCE "RFC 2863 - The Interfaces Group MIB, McCloghrie, K., and F. Kastenholtz, June 2000" DEFVAL {""} ::= { mplsTunnelEntry 5 }
mplsTunnelDescr OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-create STATUS current DESCRIPTION "A textual string containing information about the tunnel. If there is no description this object contains a zero length string. This object is may not be signaled by MPLS signaling protocols,
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consequentally the value of this object at transit and egress LSRs MAY be automatically generated or absent." DEFVAL {""} ::= { mplsTunnelEntry 6 }
mplsTunnelIsIf OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-create STATUS current DESCRIPTION "Denotes whether or not this tunnel corresponds to an interface represented in the interfaces group table. Note that if this variable is set to true then the ifName of the interface corresponding to this tunnel should have a value equal to mplsTunnelName. Also see the description of ifName in RFC 2863. This object is meaningful only at the ingress and egress LSRs." REFERENCE "RFC 2863 - The Interfaces Group MIB, McCloghrie, K., and F. Kastenholtz, June 2000" DEFVAL { false } ::= { mplsTunnelEntry 7 }
mplsTunnelIfIndex OBJECT-TYPE SYNTAX InterfaceIndexOrZero MAX-ACCESS read-only STATUS current DESCRIPTION "If mplsTunnelIsIf is set to true, then this value contains the LSR-assigned ifIndex which corresponds to an entry in the interfaces table. Otherwise this variable should contain the value of zero indicating that a valid ifIndex was not assigned to this tunnel interface." REFERENCE "RFC 2863 - The Interfaces Group MIB, McCloghrie, K., and F. Kastenholtz, June 2000" DEFVAL { 0 } ::= { mplsTunnelEntry 8 }
mplsTunnelOwner OBJECT-TYPE SYNTAX MplsOwner MAX-ACCESS read-only STATUS current DESCRIPTION "Denotes the entity that created and is responsible
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for managing this tunnel. This column is automatically filled by the agent on creation of a row." ::= { mplsTunnelEntry 9 }
mplsTunnelRole OBJECT-TYPE SYNTAX INTEGER { head(1), transit(2), tail(3), headTail(4) } MAX-ACCESS read-create STATUS current DESCRIPTION "This value signifies the role that this tunnel entry/instance represents. This value MUST be set to head(1) at the originating point of the tunnel. This value MUST be set to transit(2) at transit points along the tunnel, if transit points are supported. This value MUST be set to tail(3) at the terminating point of the tunnel if tunnel tails are supported.
The value headTail(4) is provided for tunnels that begin and end on the same LSR." DEFVAL { head } ::= { mplsTunnelEntry 10 }
mplsTunnelXCPointer OBJECT-TYPE SYNTAX RowPointer MAX-ACCESS read-create STATUS current DESCRIPTION "This variable points to a row in the mplsXCTable. This table identifies the segments that compose this tunnel, their characteristics, and relationships to each other. A value of zeroDotZero indicates that no LSP has been associated with this tunnel yet." REFERENCE "Srinivasan, C., Viswanathan, A., and T. Nadeau, Multiprotocol Label Switching (MPLS) Label Switching Router (LSR) Management Information Base (MIB), RFC 3813, June 2004" DEFVAL { zeroDotZero } ::= { mplsTunnelEntry 11 }
none(1), rsvp(2), crldp(3), other(4) } MAX-ACCESS read-create STATUS current DESCRIPTION "The signalling protocol, if any, used to setup this tunnel." DEFVAL { none } ::= { mplsTunnelEntry 12 }
mplsTunnelSetupPrio OBJECT-TYPE SYNTAX Integer32 (0..7) MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the setup priority of this tunnel." REFERENCE "1. RSVP-TE: Extensions to RSVP for LSP Tunnels, Awduche et al, RFC 3209, December 2001 2. Constraint-Based LSP Setup using LDP, Jamoussi (Editor), RFC 3212, January 2002" DEFVAL { 0 } ::= { mplsTunnelEntry 13 }
mplsTunnelHoldingPrio OBJECT-TYPE SYNTAX Integer32 (0..7) MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the holding priority for this tunnel." REFERENCE "1. RSVP-TE: Extensions to RSVP for LSP Tunnels, Awduche et al, RFC 3209, December 2001
recordRoute(4) } MAX-ACCESS read-create STATUS current DESCRIPTION "This bit mask indicates optional session values for this tunnel. The following describes these bit fields:
fastRerouteThis flag indicates that the any tunnel hop may choose to reroute this tunnel without tearing it down. This flag permits transit routers to use a local repair mechanism which may result in violation of the explicit routing of this tunnel. When a fault is detected on an adjacent downstream link or node, a transit router can re-route traffic for fast service restoration.
mergingPermitted This flag permits transit routers to merge this session with other RSVP sessions for the purpose of reducing resource overhead on downstream transit routers, thereby providing better network scaling.
isPersistent Indicates whether this tunnel should be restored automatically after a failure occurs.
isPinned This flag indicates whether the loose- routed hops of this tunnel are to be pinned.
recordRouteThis flag indicates whether or not the signalling protocol should remember the tunnel path after it has been signaled." REFERENCE "1. RSVP-TE: Extensions to RSVP for LSP Tunnels, Awduche et al, RFC 3209, December 2001." ::= { mplsTunnelEntry 15 }
mplsTunnelLocalProtectInUse OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates that the local repair mechanism is in use to maintain this tunnel (usually in the face of an outage of the link it was previously routed over)." DEFVAL { false } ::= { mplsTunnelEntry 16 }
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mplsTunnelResourcePointer OBJECT-TYPE SYNTAX RowPointer MAX-ACCESS read-create STATUS current DESCRIPTION "This variable represents a pointer to the traffic parameter specification for this tunnel. This value may point at an entry in the mplsTunnelResourceEntry to indicate which mplsTunnelResourceEntry is to be assigned to this LSP instance. This value may optionally point at an externally defined traffic parameter specification table. A value of zeroDotZero indicates best-effort treatment. By having the same value of this object, two or more LSPs can indicate resource sharing." DEFVAL { zeroDotZero } ::= { mplsTunnelEntry 17 }
mplsTunnelPrimaryInstance OBJECT-TYPE SYNTAX MplsTunnelInstanceIndex MAX-ACCESS read-only STATUS current DESCRIPTION "Specifies the instance index of the primary instance of this tunnel. More details of the definition of tunnel instances and the primary tunnel instance can be found in the description of the TEXTUAL-CONVENTION MplsTunnelInstanceIndex." DEFVAL { 0 } ::= { mplsTunnelEntry 18 }
mplsTunnelInstancePriority OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-create STATUS current DESCRIPTION "This value indicates which priority, in descending order, with 0 indicating the lowest priority, within a group of tunnel instances. A group of tunnel instances is defined as a set of LSPs with the same mplsTunnelIndex in this table, but with a different mplsTunnelInstance. Tunnel instance priorities are used to denote the priority at which a particular tunnel instance will supercede another. Instances of tunnels containing the same mplsTunnelInstancePriority will be used for load sharing."
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DEFVAL { 0 } ::= { mplsTunnelEntry 19 }
mplsTunnelHopTableIndex OBJECT-TYPE SYNTAX MplsPathIndexOrZero MAX-ACCESS read-create STATUS current DESCRIPTION "Index into the mplsTunnelHopTable entry that specifies the explicit route hops for this tunnel. This object is meaningful only at the head-end of the tunnel." DEFVAL { 0 } ::= { mplsTunnelEntry 20 }
mplsTunnelPathInUse OBJECT-TYPE SYNTAX MplsPathIndexOrZero MAX-ACCESS read-create STATUS current DESCRIPTION "This value denotes the configured path that was chosen for this tunnel. This value reflects the secondary index into mplsTunnelHopTable. This path may not exactly match the one in mplsTunnelARHopTable due to the fact that some CSPF modification may have taken place. See mplsTunnelARHopTable for the actual path being taken by the tunnel. A value of zero denotes that no path is currently in use or available." DEFVAL { 0 } ::= { mplsTunnelEntry 21 }
mplsTunnelARHopTableIndex OBJECT-TYPE SYNTAX MplsPathIndexOrZero MAX-ACCESS read-only STATUS current DESCRIPTION "Index into the mplsTunnelARHopTable entry that specifies the actual hops traversed by the tunnel. This is automatically updated by the agent when the actual hops becomes available." DEFVAL { 0 } ::= { mplsTunnelEntry 22 }
mplsTunnelCHopTableIndex OBJECT-TYPE SYNTAX MplsPathIndexOrZero MAX-ACCESS read-only STATUS current
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DESCRIPTION "Index into the mplsTunnelCHopTable entry that specifies the computed hops traversed by the tunnel. This is automatically updated by the agent when computed hops become available or when computed hops get modified." DEFVAL { 0 } ::= { mplsTunnelEntry 23 }
mplsTunnelIncludeAnyAffinity OBJECT-TYPE SYNTAX MplsTunnelAffinity MAX-ACCESS read-create STATUS current DESCRIPTION "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 "1. RSVP-TE: Extensions to RSVP for LSP Tunnels, Awduche et al, RFC 3209, December 2001." ::= { mplsTunnelEntry 24 }
mplsTunnelIncludeAllAffinity OBJECT-TYPE SYNTAX MplsTunnelAffinity MAX-ACCESS read-create STATUS current DESCRIPTION "A link satisfies the include-all constraint if and only if the link contains all of the administrative groups specified in the constraint." REFERENCE "1. RSVP-TE: Extensions to RSVP for LSP Tunnels, Awduche et al, RFC 3209, December 2001." ::= { mplsTunnelEntry 25 }
mplsTunnelExcludeAnyAffinity OBJECT-TYPE SYNTAX MplsTunnelAffinity MAX-ACCESS read-create STATUS current DESCRIPTION "A link satisfies the exclude-any constraint if and only if the link contains none of the administrative groups specified in the constraint." REFERENCE "1. RSVP-TE: Extensions to RSVP for LSP Tunnels, Awduche et al, RFC 3209, December 2001." DEFVAL { 0 } ::= { mplsTunnelEntry 26 }
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mplsTunnelTotalUpTime OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "This value represents the aggregate up time for all instances of this tunnel, if available. If this value is unavailable, it MUST return a value of 0." ::= { mplsTunnelEntry 27 }
mplsTunnelInstanceUpTime OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "This value identifies the total time that this tunnel instance's operStatus has been Up(1)." ::= { mplsTunnelEntry 28 }
mplsTunnelPrimaryUpTime OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "Specifies the total time the primary instance of this tunnel has been active. The primary instance of this tunnel is defined in mplsTunnelPrimaryInstance." ::= { mplsTunnelEntry 29 }
mplsTunnelPathChanges OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Specifies the number of times the actual path for this tunnel instance has changed." ::= { mplsTunnelEntry 30 }
mplsTunnelLastPathChange OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "Specifies the time since the last change to the actual path for this tunnel instance." ::= { mplsTunnelEntry 31 }
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mplsTunnelCreationTime OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "Specifies the value of SysUpTime when the first instance of this tunnel came into existence. That is, when the value of mplsTunnelOperStatus was first set to up(1)." ::= { mplsTunnelEntry 32 }
mplsTunnelStateTransitions OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Specifies the number of times the state (mplsTunnelOperStatus) of this tunnel instance has changed." ::= { mplsTunnelEntry 33 }
mplsTunnelAdminStatus OBJECT-TYPE SYNTAX INTEGER { -- ready to pass packets up(1), down(2), -- in some test mode testing(3) } MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the desired operational status of this tunnel." ::= { mplsTunnelEntry 34 }
mplsTunnelOperStatus OBJECT-TYPE SYNTAX INTEGER { -- ready to pass packets up(1), down(2), -- in some test mode testing(3), -- status cannot be determined unknown(4), dormant(5), -- some component is missing notPresent(6),
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-- down due to the state of -- lower layer interfaces lowerLayerDown(7) } MAX-ACCESS read-only STATUS current DESCRIPTION "Indicates the actual operational status of this tunnel, which is typically but not limited to, a function of the state of individual segments of this tunnel." ::= { mplsTunnelEntry 35 }
mplsTunnelRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This variable 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 mplsTunnelAdminStatus, mplsTunnelRowStatus and mplsTunnelStorageType." ::= { mplsTunnelEntry 36 }
mplsTunnelStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this tunnel entry. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row." DEFVAL { volatile } ::= { mplsTunnelEntry 37 }
-- End of mplsTunnelTable
mplsTunnelHopListIndexNext OBJECT-TYPE SYNTAX MplsPathIndexOrZero MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains an appropriate value to be used for mplsTunnelHopListIndex when creating entries in the mplsTunnelHopTable. If the number of unassigned entries is exhausted, a retrieval
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operation will return a value of 0. This object may also return a value of 0 when the LSR is unable to accept conceptual row creation, for example, if the mplsTunnelHopTable is implemented as read-only. To obtain the value of mplsTunnelHopListIndex for a new entry in the mplsTunnelHopTable, the manager issues a management protocol retrieval operation to obtain the current value of mplsTunnelHopIndex.
When the SET is performed to create a row in the mplsTunnelHopTable, the Command Responder (agent) must determine whether the value is indeed still unused; Two Network Management Applications may attempt to create a row (configuration entry) simultaneously and use the same value. If it is currently unused, the SET succeeds and the Command Responder (agent) changes the value of this object, according to an implementation-specific algorithm. If the value is in use, however, the SET fails. The Network Management Application must then re-read this variable to obtain a new usable value." ::= { mplsTeObjects 3 }
mplsTunnelHopTable OBJECT-TYPE SYNTAX SEQUENCE OF MplsTunnelHopEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The mplsTunnelHopTable is used to indicate the hops, strict or loose, for an instance of an MPLS tunnel defined in mplsTunnelTable, when it is established via signalling, for the outgoing direction of the tunnel. Thus at a transit LSR, this table contains the desired path of the tunnel from this LSR onwards. Each row in this table is indexed by mplsTunnelHopListIndex which corresponds to a group of hop lists or path options. Each row also has a secondary index mplsTunnelHopIndex, which indicates a group of hops (also known as a path option). Finally, the third index, mplsTunnelHopIndex indicates the specific hop information for a path option. In case we want to specify a particular interface on the originating LSR of an outgoing tunnel by which we want packets to exit the LSR, we specify this as the first hop for this tunnel in mplsTunnelHopTable." ::= { mplsTeObjects 4 }
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mplsTunnelHopEntry OBJECT-TYPE SYNTAX MplsTunnelHopEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents a tunnel hop. An entry is created by a network administrator for signaled ERLSP set up by an MPLS signalling protocol." INDEX { mplsTunnelHopListIndex, mplsTunnelHopPathOptionIndex, mplsTunnelHopIndex } ::= { mplsTunnelHopTable 1 }
mplsTunnelHopListIndex OBJECT-TYPE SYNTAX MplsPathIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Primary index into this table identifying a particular explicit route object." ::= { mplsTunnelHopEntry 1 }
mplsTunnelHopPathOptionIndex OBJECT-TYPE SYNTAX MplsPathIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION
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"Secondary index into this table identifying a particular group of hops representing a particular configured path. This is otherwise known as a path option." ::= { mplsTunnelHopEntry 2 }
mplsTunnelHopIndex OBJECT-TYPE SYNTAX MplsPathIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Tertiary index into this table identifying a particular hop." ::= { mplsTunnelHopEntry 3 }
mplsTunnelHopAddrType OBJECT-TYPE SYNTAX TeHopAddressType MAX-ACCESS read-create STATUS current DESCRIPTION "The Hop Address Type of this tunnel hop.
The value of this object cannot be changed if the value of the corresponding mplsTunnelHopRowStatus object is 'active'.
Note that lspid(5) is a valid option only for tunnels signaled via CRLDP. " DEFVAL { ipv4 } ::= { mplsTunnelHopEntry 4 }
mplsTunnelHopIpAddr OBJECT-TYPE SYNTAX TeHopAddress MAX-ACCESS read-create STATUS current DESCRIPTION "The Tunnel Hop Address for this tunnel hop.
The type of this address is determined by the value of the corresponding mplsTunnelHopAddrType.
The value of this object cannot be changed if the value of the corresponding mplsTunnelHopRowStatus object is 'active'. " DEFVAL { '00000000'h } -- IPv4 address 0.0.0.0 ::= { mplsTunnelHopEntry 5 }
mplsTunnelHopIpPrefixLen OBJECT-TYPE
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SYNTAX InetAddressPrefixLength MAX-ACCESS read-create STATUS current DESCRIPTION "If mplsTunnelHopAddrType is set to ipv4(1) or ipv6(2), then this value will contain an appropriate prefix length for the IP address in object mplsTunnelHopIpAddr. Otherwise this value is irrelevant and should be ignored. " DEFVAL { 32 } ::= { mplsTunnelHopEntry 6 }
mplsTunnelHopAsNumber OBJECT-TYPE SYNTAX TeHopAddressAS MAX-ACCESS read-create STATUS current DESCRIPTION "If mplsTunnelHopAddrType is set to asnumber(3), then this value will contain the AS number of this hop. Otherwise the agent should set this object to zero- length string and the manager should ignore this." ::= { mplsTunnelHopEntry 7 }
mplsTunnelHopAddrUnnum OBJECT-TYPE SYNTAX TeHopAddressUnnum MAX-ACCESS read-create STATUS current DESCRIPTION "If mplsTunnelHopAddrType is set to unnum(4), then this value will contain the interface identifier of the unnumbered interface for this hop. This object should be used in conjunction with mplsTunnelHopIpAddress which would contain the LSR Router ID in this case. Otherwise the agent should set this object to zero-length string and the manager should ignore this." ::= { mplsTunnelHopEntry 8 }
mplsTunnelHopLspId OBJECT-TYPE SYNTAX MplsLSPID MAX-ACCESS read-create STATUS current DESCRIPTION "If mplsTunnelHopAddrType is set to lspid(5), then this value will contain the LSPID of a tunnel of this hop. The present tunnel being configured is tunneled through this hop (using label stacking). This object is otherwise insignificant and should
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contain a value of 0 to indicate this fact." ::= { mplsTunnelHopEntry 9 }
mplsTunnelHopType OBJECT-TYPE SYNTAX INTEGER { strict(1), loose(2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Denotes whether this tunnel hop is routed in a strict or loose fashion. The value of this object has no meaning if the mplsTunnelHopInclude object is set to 'false'." ::= { mplsTunnelHopEntry 10 }
mplsTunnelHopInclude OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-create STATUS current DESCRIPTION "If this value is set to true, then this indicates that this hop must be included in the tunnel's path. If this value is set to 'false', then this hop must be avoided when calculating the path for this tunnel. The default value of this object is 'true', so that by default all indicated hops are included in the CSPF path computation. If this object is set to 'false' the value of mplsTunnelHopType should be ignored." DEFVAL { true } ::= { mplsTunnelHopEntry 11 }
mplsTunnelHopPathOptionName OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-create STATUS current DESCRIPTION "The description of this series of hops as they relate to the specified path option. The value of this object SHOULD be the same for each hop in the series that comprises a path option." ::= { mplsTunnelHopEntry 12 }
dynamic(1), -- CSPF computed explicit(2) -- strict hop } MAX-ACCESS read-create STATUS current DESCRIPTION "If this value is set to dynamic, then the user should only specify the source and destination of the path and expect that the CSPF will calculate the remainder of the path. If this value is set to explicit, the user should specify the entire path for the tunnel to take. This path may contain strict or loose hops. Each hop along a specific path SHOULD have this object set to the same value" ::= { mplsTunnelHopEntry 13 }
mplsTunnelHopRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This variable 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 mplsTunnelHopRowStatus and mplsTunnelHopStorageType." ::= { mplsTunnelHopEntry 14 }
mplsTunnelHopStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this Hop entry. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row." DEFVAL { volatile } ::= { mplsTunnelHopEntry 15 }
STATUS current DESCRIPTION "This object contains the next appropriate value to be used for mplsTunnelResourceIndex when creating entries in the mplsTunnelResourceTable. If the number of unassigned entries is exhausted, a retrieval operation will return a value of 0. This object may also return a value of 0 when the LSR is unable to accept conceptual row creation, for example, if the mplsTunnelTable is implemented as read-only. To obtain the mplsTunnelResourceIndex value for a new entry, the manager must first issue a management protocol retrieval operation to obtain the current value of this object.
When the SET is performed to create a row in the mplsTunnelResourceTable, the Command Responder (agent) must determine whether the value is indeed still unused; Two Network Management Applications may attempt to create a row (configuration entry) simultaneously and use the same value. If it is currently unused, the SET succeeds and the Command Responder (agent) changes the value of this object, according to an implementation-specific algorithm. If the value is in use, however, the SET fails. The Network Management Application must then re-read this variable to obtain a new usable value." ::= { mplsTeObjects 5 }
mplsTunnelResourceTable OBJECT-TYPE SYNTAX SEQUENCE OF MplsTunnelResourceEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The mplsTunnelResourceTable allows a manager to specify which resources are desired for an MPLS tunnel. This table also allows several tunnels to point to a single entry in this table, implying that these tunnels should share resources." ::= { mplsTeObjects 6 }
mplsTunnelResourceEntry OBJECT-TYPE SYNTAX MplsTunnelResourceEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents a set of resources for an MPLS tunnel. An entry can be created by a
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network administrator or by an SNMP agent as instructed by any MPLS signalling protocol. An entry in this table referenced by a tunnel instance with zero mplsTunnelInstance value indicates a configured set of resource parameter. An entry referenced by a tunnel instance with a non-zero mplsTunnelInstance reflects the in-use resource parameters for the tunnel instance which may have been negotiated or modified by the MPLS signaling protocols." INDEX { mplsTunnelResourceIndex } ::= { mplsTunnelResourceTable 1 }
mplsTunnelResourceIndex OBJECT-TYPE SYNTAX Unsigned32 (1..2147483647) MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies this row." ::= { mplsTunnelResourceEntry 1 }
mplsTunnelResourceMaxRate OBJECT-TYPE SYNTAX MplsBitRate UNITS "kilobits per second" MAX-ACCESS read-create STATUS current DESCRIPTION "The maximum rate in bits/second. Note that setting mplsTunnelResourceMaxRate, mplsTunnelResourceMeanRate, and mplsTunnelResourceMaxBurstSize to 0 indicates best- effort treatment." ::= { mplsTunnelResourceEntry 2 }
mplsTunnelResourceMeanRate OBJECT-TYPE
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SYNTAX MplsBitRate UNITS "kilobits per second" MAX-ACCESS read-create STATUS current DESCRIPTION "This object is copied into an instance of mplsTrafficParamMeanRate in the mplsTrafficParamTable. The OID of this table entry is then copied into the corresponding mplsInSegmentTrafficParamPtr." ::= { mplsTunnelResourceEntry 3 }
mplsTunnelResourceMaxBurstSize OBJECT-TYPE SYNTAX MplsBurstSize UNITS "bytes" MAX-ACCESS read-create STATUS current DESCRIPTION "The maximum burst size in bytes." ::= { mplsTunnelResourceEntry 4 }
mplsTunnelResourceMeanBurstSize OBJECT-TYPE SYNTAX MplsBurstSize UNITS "bytes" MAX-ACCESS read-create STATUS current DESCRIPTION "The mean burst size in bytes. The implementations which do not implement this variable must return a noSuchObject exception for this object and must not allow a user to set this object." ::= { mplsTunnelResourceEntry 5 }
mplsTunnelResourceExBurstSize OBJECT-TYPE SYNTAX MplsBurstSize UNITS "bytes" MAX-ACCESS read-create STATUS current DESCRIPTION "The Excess burst size in bytes. The implementations which do not implement this variable must return noSuchObject exception for this object and must not allow a user to set this value." REFERENCE "CR-LDP Specification, Section 4.3." ::= { mplsTunnelResourceEntry 6 }
mplsTunnelResourceFrequency OBJECT-TYPE
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SYNTAX INTEGER { unspecified(1), frequent(2), veryFrequent(3) } MAX-ACCESS read-create STATUS current DESCRIPTION "The granularity of the availability of committed rate. The implementations which do not implement this variable must return unspecified(1) for this value and must not allow a user to set this value." REFERENCE "CR-LDP Specification, Section 4.3." ::= { mplsTunnelResourceEntry 7 }
mplsTunnelResourceWeight OBJECT-TYPE SYNTAX Unsigned32(0..255) MAX-ACCESS read-create STATUS current DESCRIPTION "The relative weight for using excess bandwidth above its committed rate. The value of 0 means that weight is not applicable for the CR-LSP." REFERENCE "CR-LDP Specification, Section 4.3." ::= { mplsTunnelResourceEntry 8 }
mplsTunnelResourceRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This variable 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 mplsTunnelResourceRowStatus and mplsTunnelResourceStorageType." ::= { mplsTunnelResourceEntry 9 }
mplsTunnelResourceStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this Hop entry. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects
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in the row." DEFVAL { volatile }
::= { mplsTunnelResourceEntry 10 }
-- End mplsTunnelResourceTable -- Tunnel Actual Route Hop table.
mplsTunnelARHopTable OBJECT-TYPE SYNTAX SEQUENCE OF MplsTunnelARHopEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The mplsTunnelARHopTable is used to indicate the hops for an MPLS tunnel defined in mplsTunnelTable, as reported by the MPLS signalling protocol. Thus at a transit LSR, this table (if the table is supported and if the signaling protocol is recording actual route information) contains the actual route of the whole tunnel. If the signaling protocol is not recording the actual route, this table MAY report the information from the mplsTunnelHopTable or the mplsTunnelCHopTable.
Each row in this table is indexed by mplsTunnelARHopListIndex. Each row also has a secondary index mplsTunnelARHopIndex, corresponding to the next hop that this row corresponds to.
Please note that since the information necessary to build entries within this table is not provided by some MPLS signalling protocols, implementation of this table is optional. Furthermore, since the information in this table is actually provided by the MPLS signalling protocol after the path has been set-up, the entries in this table are provided only for observation, and hence, all variables in this table are accessible exclusively as read- only.
Note also that the contents of this table may change while it is being read because of re-routing activities. A network administrator may verify that the actual route read is consistent by reference to the mplsTunnelLastPathChange object." ::= { mplsTeObjects 7 }
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mplsTunnelARHopEntry OBJECT-TYPE SYNTAX MplsTunnelARHopEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents a tunnel hop. An entry is created by the agent for signaled ERLSP set up by an MPLS signalling protocol." INDEX { mplsTunnelARHopListIndex, mplsTunnelARHopIndex } ::= { mplsTunnelARHopTable 1 }
mplsTunnelARHopListIndex OBJECT-TYPE SYNTAX MplsPathIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Primary index into this table identifying a particular recorded hop list." ::= { mplsTunnelARHopEntry 1 }
mplsTunnelARHopIndex OBJECT-TYPE SYNTAX MplsPathIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Secondary index into this table identifying the particular hop." ::= { mplsTunnelARHopEntry 2 }
mplsTunnelARHopAddrType OBJECT-TYPE SYNTAX TeHopAddressType MAX-ACCESS read-only STATUS current DESCRIPTION "The Hop Address Type of this tunnel hop.
Note that lspid(5) is a valid option only for tunnels signaled via CRLDP." DEFVAL { ipv4 }
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::= { mplsTunnelARHopEntry 3 }
mplsTunnelARHopIpAddr OBJECT-TYPE SYNTAX TeHopAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The Tunnel Hop Address for this tunnel hop.
The type of this address is determined by the value of the corresponding mplsTunnelARHopAddrType. If mplsTunnelARHopAddrType is set to unnum(4), then this value contains the LSR Router ID of the unnumbered interface. Otherwise the agent SHOULD set this object to the zero-length string and the manager should ignore this object." DEFVAL { '00000000'h } -- IPv4 address 0.0.0.0 ::= { mplsTunnelARHopEntry 4 }
mplsTunnelARHopAddrUnnum OBJECT-TYPE SYNTAX TeHopAddressUnnum MAX-ACCESS read-only STATUS current DESCRIPTION "If mplsTunnelARHopAddrType is set to unnum(4), then this value will contain the interface identifier of the unnumbered interface for this hop. This object should be used in conjunction with mplsTunnelARHopIpAddr which would contain the LSR Router ID in this case. Otherwise the agent should set this object to zero-length string and the manager should ignore this." ::= { mplsTunnelARHopEntry 5 }
mplsTunnelARHopLspId OBJECT-TYPE SYNTAX MplsLSPID MAX-ACCESS read-only STATUS current DESCRIPTION "If mplsTunnelARHopAddrType is set to lspid(5), then this value will contain the LSP ID of this hop. This object is otherwise insignificant and should contain a value of 0 to indicate this fact." ::= { mplsTunnelARHopEntry 6 }
-- End of mplsTunnelARHopTable
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-- Tunnel Computed Hop table.
mplsTunnelCHopTable OBJECT-TYPE SYNTAX SEQUENCE OF MplsTunnelCHopEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The mplsTunnelCHopTable is used to indicate the hops, strict or loose, for an MPLS tunnel defined in mplsTunnelTable, as computed by a constraint- based routing protocol, based on the mplsTunnelHopTable for the outgoing direction of the tunnel. Thus at a transit LSR, this table (if the table is supported) MAY contain the path computed by the CSPF engine on (or on behalf of) this LSR. Each row in this table is indexed by mplsTunnelCHopListIndex. Each row also has a secondary index mplsTunnelCHopIndex, corresponding to the next hop that this row corresponds to. In case we want to specify a particular interface on the originating LSR of an outgoing tunnel by which we want packets to exit the LSR, we specify this as the first hop for this tunnel in mplsTunnelCHopTable.
Please note that since the information necessary to build entries within this table may not be supported by some LSRs, implementation of this table is optional. Furthermore, since the information in this table describes the path computed by the CSPF engine the entries in this table are read-only." ::= { mplsTeObjects 8 }
mplsTunnelCHopEntry OBJECT-TYPE SYNTAX MplsTunnelCHopEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents a tunnel hop. An entry in this table is created by a path computation engine using CSPF techniques applied to the information collected by routing protocols and the hops specified in the corresponding mplsTunnelHopTable." INDEX { mplsTunnelCHopListIndex, mplsTunnelCHopIndex } ::= { mplsTunnelCHopTable 1 }
mplsTunnelCHopListIndex OBJECT-TYPE SYNTAX MplsPathIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Primary index into this table identifying a particular computed hop list." ::= { mplsTunnelCHopEntry 1 }
mplsTunnelCHopIndex OBJECT-TYPE SYNTAX MplsPathIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "Secondary index into this table identifying the particular hop." ::= { mplsTunnelCHopEntry 2 }
mplsTunnelCHopAddrType OBJECT-TYPE SYNTAX TeHopAddressType MAX-ACCESS read-only STATUS current DESCRIPTION "The Hop Address Type of this tunnel hop.
Note that lspid(5) is a valid option only for tunnels signaled via CRLDP." DEFVAL { ipv4 } ::= { mplsTunnelCHopEntry 3 }
mplsTunnelCHopIpAddr OBJECT-TYPE SYNTAX TeHopAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The Tunnel Hop Address for this tunnel hop.
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The type of this address is determined by the value of the corresponding mplsTunnelCHopAddrType.
If mplsTunnelCHopAddrType is set to unnum(4), then this value will contain the LSR Router ID of the unnumbered interface. Otherwise the agent should set this object to the zero-length string and the manager SHOULD ignore this object." DEFVAL { '00000000'h } -- IPv4 address 0.0.0.0 ::= { mplsTunnelCHopEntry 4 }
mplsTunnelCHopIpPrefixLen OBJECT-TYPE SYNTAX InetAddressPrefixLength MAX-ACCESS read-only STATUS current DESCRIPTION "If mplsTunnelCHopAddrType is set to ipv4(1) or ipv6(2), then this value will contain an appropriate prefix length for the IP address in object mplsTunnelCHopIpAddr. Otherwise this value is irrelevant and should be ignored. " DEFVAL { 32 } ::= { mplsTunnelCHopEntry 5 }
mplsTunnelCHopAsNumber OBJECT-TYPE SYNTAX TeHopAddressAS MAX-ACCESS read-only STATUS current DESCRIPTION "If mplsTunnelCHopAddrType is set to asnumber(3), then this value will contain the AS number of this hop. Otherwise the agent should set this object to zero-length string and the manager should ignore this." ::= { mplsTunnelCHopEntry 6 }
mplsTunnelCHopAddrUnnum OBJECT-TYPE SYNTAX TeHopAddressUnnum MAX-ACCESS read-only STATUS current DESCRIPTION "If mplsTunnelCHopAddrType is set to unnum(4), then this value will contain the unnumbered interface identifier of this hop. This object should be used in conjunction with mplsTunnelCHopIpAddr which would contain the LSR Router ID in this case.
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Otherwise the agent should set this object to zero- length string and the manager should ignore this." ::= { mplsTunnelCHopEntry 7 }
mplsTunnelCHopLspId OBJECT-TYPE SYNTAX MplsLSPID MAX-ACCESS read-only STATUS current DESCRIPTION "If mplsTunnelCHopAddrType is set to lspid(5), then this value will contain the LSP ID of this hop. This object is otherwise insignificant and should contain a value of 0 to indicate this fact." ::= { mplsTunnelCHopEntry 8 }
mplsTunnelCHopType OBJECT-TYPE SYNTAX INTEGER { strict(1), loose(2) } MAX-ACCESS read-only STATUS current DESCRIPTION "Denotes whether this is tunnel hop is routed in a strict or loose fashion." ::= { mplsTunnelCHopEntry 9 }
-- End of mplsTunnelCHopTable
-- MPLS Tunnel Performance Table.
mplsTunnelPerfTable OBJECT-TYPE SYNTAX SEQUENCE OF MplsTunnelPerfEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table provides per-tunnel instance MPLS performance information." ::= { mplsTeObjects 9 }
mplsTunnelPerfEntry OBJECT-TYPE SYNTAX MplsTunnelPerfEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table is created by the LSR for every tunnel. Its is an extension to mplsTunnelEntry."
mplsTunnelPerfPackets OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of packets forwarded by the tunnel. This object should represents the 32-bit value of the least significant part of the 64-bit value if both mplsTunnelPerfHCPackets is returned." ::= { mplsTunnelPerfEntry 1 }
mplsTunnelPerfHCPackets OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "High capacity counter for number of packets forwarded by the tunnel. " ::= { mplsTunnelPerfEntry 2 }
mplsTunnelPerfErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of packets dropped because of errors or for other reasons." ::= { mplsTunnelPerfEntry 3 }
mplsTunnelPerfBytes OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of bytes forwarded by the tunnel. This object should represents the 32-bit
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value of the least significant part of the 64-bit value if both mplsTunnelPerfHCBytes is returned." ::= { mplsTunnelPerfEntry 4 }
mplsTunnelPerfHCBytes OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "High capacity counter for number of bytes forwarded by the tunnel." ::= { mplsTunnelPerfEntry 5 }
-- End of mplsTunnelPerfTable
-- CR-LDP Tunnel Resource Table
mplsTunnelCRLDPResTable OBJECT-TYPE SYNTAX SEQUENCE OF MplsTunnelCRLDPResEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The mplsTunnelCRLDPResTable allows a manager to specify which CR-LDP-specific resources are desired for an MPLS tunnel if that tunnel is signaled using CR-LDP. Note that these attributes are in addition to those specified in mplsTunnelResourceTable. This table also allows several tunnels to point to a single entry in this table, implying that these tunnels should share resources." ::= { mplsTeObjects 10 }
mplsTunnelCRLDPResEntry OBJECT-TYPE SYNTAX MplsTunnelCRLDPResEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents a set of resources for an MPLS tunnel established using CRLDP (mplsTunnelSignallingProto equal to crldp (3)). An entry can be created by a network administrator or by an SNMP agent as instructed by any MPLS signalling protocol." INDEX { mplsTunnelResourceIndex } ::= { mplsTunnelCRLDPResTable 1 }
mplsTunnelCRLDPResMeanBurstSize OBJECT-TYPE SYNTAX MplsBurstSize UNITS "bytes" MAX-ACCESS read-create STATUS current DESCRIPTION "The mean burst size in bytes." ::= { mplsTunnelCRLDPResEntry 1 }
mplsTunnelCRLDPResExBurstSize OBJECT-TYPE SYNTAX MplsBurstSize UNITS "bytes" MAX-ACCESS read-create STATUS current DESCRIPTION "The Excess burst size in bytes." REFERENCE "CR-LDP Specification, Section 4.3." ::= { mplsTunnelCRLDPResEntry 2 }
mplsTunnelCRLDPResFrequency OBJECT-TYPE SYNTAX INTEGER { unspecified(1), frequent(2), veryFrequent(3) } MAX-ACCESS read-create STATUS current DESCRIPTION "The granularity of the availability of committed rate." REFERENCE "CR-LDP Specification, Section 4.3." ::= { mplsTunnelCRLDPResEntry 3 }
STATUS current DESCRIPTION "The relative weight for using excess bandwidth above its committed rate. The value of 0 means that weight is not applicable for the CR-LSP." REFERENCE "CR-LDP Specification, Section 4.3." DEFVAL { 0 } ::= { mplsTunnelCRLDPResEntry 4 }
mplsTunnelCRLDPResFlags OBJECT-TYPE SYNTAX Unsigned32 (0..63) MAX-ACCESS read-create STATUS current DESCRIPTION "The value of the 1 byte Flags conveyed as part of the traffic parameters during the establishment of the CRLSP. The bits in this object are to be interpreted as follows.
+--+--+--+--+--+--+--+--+ | Res |F6|F5|F4|F3|F2|F1| +--+--+--+--+--+--+--+--+
Res - These bits are reserved. Zero on transmission. Ignored on receipt. F1 - Corresponds to the PDR. F2 - Corresponds to the PBS. F3 - Corresponds to the CDR. F4 - Corresponds to the CBS. F5 - Corresponds to the EBS. F6 - Corresponds to the Weight.
Each flag if is a Negotiable Flag corresponding to a Traffic Parameter. The Negotiable Flag value zero denotes Not Negotiable and value one denotes Negotiable." REFERENCE "1. Section 4.3, Constraint-Based LSP Setup using LDP, Jamoussi (Editor), RFC 3212, January 2002" DEFVAL { 0 } ::= { mplsTunnelCRLDPResEntry 5 }
mplsTunnelCRLDPResRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION
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"This variable 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 mplsTunnelCRLDPResRowStatus and mplsTunnelCRLDPResStorageType." ::= { mplsTunnelCRLDPResEntry 6 }
mplsTunnelCRLDPResStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this CR-LDP Resource entry. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row." DEFVAL { volatile } ::= { mplsTunnelCRLDPResEntry 7 }
-- Notifications.
mplsTunnelNotificationEnable OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-write STATUS current DESCRIPTION "If this object is true, then it enables the generation of mplsTunnelUp and mplsTunnelDown traps, otherwise these traps are not emitted." DEFVAL { false } ::= { mplsTeObjects 11 }
mplsTunnelUp NOTIFICATION-TYPE OBJECTS { mplsTunnelAdminStatus, mplsTunnelOperStatus } STATUS current DESCRIPTION "This notification is generated when a mplsTunnelOperStatus object for one of the configured tunnels is about to leave the down state and transition into some other state (but not into the notPresent state). This other state is indicated by the included value of mplsTunnelOperStatus."
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::= { mplsTeNotifications 1 }
mplsTunnelDown NOTIFICATION-TYPE OBJECTS { mplsTunnelAdminStatus, mplsTunnelOperStatus } STATUS current DESCRIPTION "This notification is generated when a mplsTunnelOperStatus object for one of the configured tunnels is about to enter the down state from some other state (but not from the notPresent state). This other state is indicated by the included value of mplsTunnelOperStatus." ::= { mplsTeNotifications 2 }
mplsTunnelRerouted NOTIFICATION-TYPE OBJECTS { mplsTunnelAdminStatus, mplsTunnelOperStatus } STATUS current DESCRIPTION "This notification is generated when a tunnel is rerouted. If the mplsTunnelARHopTable is used, then this tunnel instance's entry in the mplsTunnelARHopTable MAY contain the new path for this tunnel some time after this trap is issued by the agent." ::= { mplsTeNotifications 3 }
mplsTunnelReoptimized NOTIFICATION-TYPE OBJECTS { mplsTunnelAdminStatus, mplsTunnelOperStatus } STATUS current DESCRIPTION "This notification is generated when a tunnel is reoptimized. If the mplsTunnelARHopTable is used, then this tunnel instance's entry in the mplsTunnelARHopTable MAY contain the new path for this tunnel some time after this trap is issued by the agent." ::= { mplsTeNotifications 4 }
-- Compliance requirement for fully compliant implementations.
mplsTeModuleFullCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "Compliance statement for agents that provide full support the MPLS-TE-STD-MIB module."
MODULE IF-MIB -- The Interfaces Group MIB, RFC 2863. MANDATORY-GROUPS { ifGeneralInformationGroup, ifCounterDiscontinuityGroup }
MODULE -- this module
-- The mandatory group has to be implemented by all -- LSRs that originate/terminate ESLSPs/tunnels. -- In addition, depending on the type of tunnels -- supported, other groups become mandatory as -- explained below.
GROUP mplsTunnelManualGroup DESCRIPTION "This group is mandatory for devices which support manual configuration of tunnels."
GROUP mplsTunnelSignaledGroup DESCRIPTION "This group is mandatory for devices which support signaled tunnel set up."
GROUP mplsTunnelIsNotIntfcGroup DESCRIPTION "This group is mandatory for devices which support
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tunnels that are not interfaces."
GROUP mplsTunnelIsIntfcGroup DESCRIPTION "This group is mandatory for devices which support tunnels that are interfaces."
GROUP mplsTunnelCRLDPResOptionalGroup DESCRIPTION "Objects in this group are required by implementations supporting the CR-LDP protocol for signalling of TE tunnels."
GROUP mplsTeNotificationGroup DESCRIPTION "This group is mandatory for those implementations which can implement the notifications contained in this group."
OBJECT mplsTunnelRowStatus 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."
OBJECT mplsTunnelHopRowStatus 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."
OBJECT mplsTunnelCRLDPResRowStatus 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."
::= { mplsTeCompliances 1 }
-- Compliance requirement for read-only implementations.
mplsTeModuleReadOnlyCompliance MODULE-COMPLIANCE STATUS current
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DESCRIPTION "Compliance requirement for implementations that only provide read-only support for MPLS-TE-STD-MIB. Such devices can then be monitored but cannot be configured using this MIB modules."
GROUP mplsTunnelManualGroup DESCRIPTION "This group is mandatory for devices which support manual configuration of tunnels."
GROUP mplsTunnelSignaledGroup DESCRIPTION "This group is mandatory for devices which support signaled tunnel set up."
GROUP mplsTunnelIsNotIntfcGroup DESCRIPTION "This group is mandatory for devices which support tunnels that are not interfaces."
GROUP mplsTunnelIsIntfcGroup DESCRIPTION "This group is mandatory for devices which support tunnels that are interfaces."
GROUP mplsTunnelCRLDPResOptionalGroup DESCRIPTION "Objects in this group are required by implementations supporting the CR-LDP protocol for signalling of TE tunnels."
GROUP mplsTeNotificationGroup DESCRIPTION "This group is mandatory for those implementations which can implement the notifications contained in this group."
-- mplsTunnelTable
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OBJECT mplsTunnelName MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelDescr MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelIsIf MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelIfIndex DESCRIPTION "Write access is not required."
OBJECT mplsTunnelXCPointer MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelSignallingProto MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelSetupPrio MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHoldingPrio MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelSessionAttributes MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelLocalProtectInUse MIN-ACCESS read-only DESCRIPTION "Write access is not required."
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OBJECT mplsTunnelResourcePointer MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelInstancePriority MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopTableIndex MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelIncludeAnyAffinity MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelIncludeAllAffinity MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelExcludeAnyAffinity MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelPathInUse MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelRole MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelAdminStatus SYNTAX INTEGER { up (1), down (2) } MIN-ACCESS read-only DESCRIPTION "Only up and down states must be supported. Write access is not required."
OBJECT mplsTunnelRowStatus
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SYNTAX RowStatus { active(1) } MIN-ACCESS read-only DESCRIPTION "Write access is not required."
-- mplsTunnelHopTable
OBJECT mplsTunnelHopAddrType MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopIpAddr MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopIpPrefixLen MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopAddrUnnum MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopAsNumber MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopLspId MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopType SYNTAX INTEGER { strict(1) } MIN-ACCESS read-only DESCRIPTION "loose(2) need not be supported. Write access is not required."
OBJECT mplsTunnelHopInclude MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopPathOptionName MIN-ACCESS read-only DESCRIPTION "Write access is not required."
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OBJECT mplsTunnelHopEntryPathComp MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopRowStatus SYNTAX RowStatus { active(1) } MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelHopStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required."
-- mplsTunnelResourceTable
OBJECT mplsTunnelResourceMaxRate MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelResourceMeanRate MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelResourceMaxBurstSize MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelResourceMeanBurstSize MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelResourceExBurstSize MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelResourceFrequency MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelResourceWeight MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelResourceRowStatus SYNTAX RowStatus { active(1) } MIN-ACCESS read-only DESCRIPTION "Write access is not required."
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OBJECT mplsTunnelResourceStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required."
-- mplsTunnelCRLDPResTable
OBJECT mplsTunnelCRLDPResMeanBurstSize MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelCRLDPResExBurstSize MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelCRLDPResFrequency MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelCRLDPResWeight MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelCRLDPResFlags MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelCRLDPResRowStatus SYNTAX RowStatus { active(1) } MIN-ACCESS read-only DESCRIPTION "Write access is not required."
OBJECT mplsTunnelCRLDPResStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required."
mplsTunnelCHopAddrUnnum, mplsTunnelCHopLspId, mplsTunnelCHopType } STATUS current DESCRIPTION "Necessary, but not sufficient, set of objects to implement tunnels. In addition, depending on the type of the tunnels supported (for example, manually configured or signaled, persistent or non- persistent, etc.), the following other groups defined below are mandatory: mplsTunnelManualGroup and/or mplsTunnelSignaledGroup, mplsTunnelIsNotIntfcGroup and/or mplsTunnelIsIntfcGroup." ::= { mplsTeGroups 1 }
mplsTunnelManualGroup OBJECT-GROUP OBJECTS { mplsTunnelSignallingProto } STATUS current DESCRIPTION "Object(s) needed to implement manually configured tunnels." ::= { mplsTeGroups 2 }
mplsTunnelScalarGroup OBJECT-GROUP OBJECTS { mplsTunnelConfigured, mplsTunnelActive, mplsTunnelTEDistProto, mplsTunnelMaxHops, mplsTunnelNotificationMaxRate } STATUS current DESCRIPTION "Scalar object needed to implement MPLS tunnels." ::= { mplsTeGroups 4 }
mplsTunnelIsIntfcGroup OBJECT-GROUP OBJECTS { mplsTunnelIsIf } STATUS current DESCRIPTION "Objects needed to implement tunnels that are interfaces." ::= { mplsTeGroups 5 }
mplsTunnelIsNotIntfcGroup OBJECT-GROUP OBJECTS { mplsTunnelIsIf } STATUS current DESCRIPTION "Objects needed to implement tunnels that are not interfaces." ::= { mplsTeGroups 6 }
mplsTunnelCRLDPResOptionalGroup OBJECT-GROUP OBJECTS { mplsTunnelCRLDPResMeanBurstSize, mplsTunnelCRLDPResExBurstSize, mplsTunnelCRLDPResFrequency, mplsTunnelCRLDPResWeight, mplsTunnelCRLDPResFlags, mplsTunnelCRLDPResRowStatus, mplsTunnelCRLDPResStorageType } STATUS current DESCRIPTION "Set of objects implemented for resources applicable for tunnels signaled using CR-LDP." ::= { mplsTeGroups 7 }
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mplsTeNotificationGroup NOTIFICATION-GROUP NOTIFICATIONS { mplsTunnelUp, mplsTunnelDown, mplsTunnelRerouted, mplsTunnelReoptimized } STATUS current DESCRIPTION "Set of notifications implemented in this module. None is mandatory." ::= { mplsTeGroups 8 }
It is clear that this MIB module is potentially useful for the monitoring of MPLS TE tunnels. This MIB module can also be used for the 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:
- the mplsTunnelTable, mplsTunnelHopTable, mplsTunnelResourceTable, and mplsTunnelCRLDPResTable collectively contain objects to provision MPLS tunnels, tunnel hops, and tunnel resources. Unauthorized access to objects in these tables, could result in disruption of traffic on the network. This is especially true if a tunnel has been established. 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. 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
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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 mplsTunnelTable, mplsTunnelHopTable, mplsTunnelResourceTable, mplsTunnelARHopTable, mplsTunnelCHopTable, mplsTunnelPerfTable, and mplsTunnelCRLDPResTable collectively show the MPLS-TE tunnel network topology and its performance characteristics. If an Administrator does not want to reveal this information, then these tables should be considered sensitive/vulnerable.
SNMP versions prior to SNMPv3 did not include adequate security. Even if the network itself is secure (for example by using IPSec), 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 that SNMPv3 be deployed and cryptographic security enabled. 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 only those principals (users) that have legitimate rights to those objects.
We wish to thank Adrian Farrel, Bert Wijnen, Eric Gray, Joan Cucchiara, Patrick Kerharo, Paul Langille, Marcus Brunner, Mike MacFaden, and Mike Piecuch for their comments on this document.
Comments should be made directly to the MPLS mailing list at mpls@uu.net.
As described in [MPLSMGMT] and as requested in the MPLS-TC-STD-MIB [RFC3811], MPLS related standards track MIB modules should be rooted under the mplsStdMIB subtree. There are 4 MPLS MIB Modules contained in this document, each of the following "IANA Considerations" subsections requests IANA for a new assignment under the mplsStdMIB subtree. New assignments can only be made via a Standards Action as specified in [RFC2434].
[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.
[RFC2702] Awduche, D., Malcolm, J., Agogbua, J., O'Dell, M., and J. McManus, "Requirements for Traffic Engineering Over MPLS", RFC 2702, September 1999.
[RFC2863] McCloghrie, K. and F. Kastenholtz, "The Interfaces Group MIB ", RFC 2863, June 2000.
[RFC3031] Rosen, E., Viswanathan, A., and R. Callon, "Multiprotocol Label Switching Architecture", RFC 3031, January 2001.
[RFC3209] Awduche, D., Berger, L., Gan, D., Li, T., Srinivasan, V., and G. Swallow, "RSVP-TE: Extensions to RSVP for LSP Tunnels", RFC 3209, December 2001.
[RFC3212] Jamoussi, B., Ed., Andersson, L., Callon, R, Dantu, R., Wu, L., Doolan, P., Worster, T., Feldman, N., Fredette, A., Girish, M., Gray, E., Heinanen, J., Kilty, T., and A. Malis, "Constraint-Based LSP Setup using LDP", RFC 3212, January 2002.
[RFC3289] Baker, F., Chan, K., and A. Smith, "Management Information Base for the Differentiated Services Architecture", RFC 3289, May 2002.
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[RFC3291] Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, "TextualConventions for Internet Network Addresses", RFC 3291, May 2002.
[RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks", STD 62, RFC 3411, December 2002.
[RFC3811] Nadeau, T. and J. Cucchiara, "Definition of Textual Conventions and for Multiprotocol Label Switching (MPLS) Management", RFC 3811, June 2004.
[RFC3813] Srinivasan, C., Viswanathan, A., and T. Nadeau, "Multiprotocol Label Switching (MPLS) Label Switching (LSR) Router Management Information Base (MIB)", RFC 3813, June 2004.
[MPLSMGMT] Nadeau, T., Srinivasan, C., and A. Farrel, "Multiprotocol Label Switching (MPLS) Management Overview", Work in Progress, September 2003.
[RFC2434] Narten, T. and H. Alvestrand., "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 2434, October 1998.
[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statement for Internet Standard Management Framework", RFC 3410, December 2002.
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