All MIBs › MPLS-LSR-MIB
Organization: Multiprotocol Label Switching (MPLS) Working Group
Last Updated: 2000-04-26
Category: MPLS and Traffic Engineering, Network Interfaces
Description: Defines managed objects for MPLS Label Switching Routers, modeling incoming-to-outgoing label mappings on MPLS-enabled interfaces.
IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring MPLS-LSR-MIB with a free 30-day trial of IPNetwork Monitor.
What Is MPLS-LSR-MIB?
MPLS-LSR-MIB is an IETF standards-track MIB for managing MPLS Label Switching Router (LSR) functions, modeling per-interface label space and the incoming-to-outgoing label mappings that implement MPLS label switching. Categories exposed include interface-level MPLS configuration and capacity such as label ranges and bandwidth/buffer limits, label-switching cross-connect mappings, and MPLS LSR notifications. Its monitoring emphasis is chiefly software/protocol-state and capacity monitoring — bandwidth utilization, label-space exhaustion, and buffer utilization per MPLS interface — used to spot forwarding-plane resource pressure rather than raw hardware sensors. It is the base MPLS forwarding MIB that MPLS-TE-STD-MIB and other MPLS service MIBs build on top of, as referenced in its own module description of the underlying MPLS architecture draft. It is deployed on MPLS-enabled core and edge routers/LSRs in service-provider and enterprise MPLS backbones. Network engineers troubleshooting mpls lsr forwarding or label-exhaustion issues typically start with this module before moving on to the more detailed traffic-engineering MIBs built on top of it.
IPNetwork Monitor allows you to monitor SNMP objects defined in MPLS-LSR-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.
Supported Devices
- vendor-neutral, standards-based MIB, not tied to a specific manufacturer
- MPLS Label Switching Router (LSR)
Monitoring Examples
An operator would poll mplsInterfaceConfTable, indexed by mplsInterfaceConfIndex, to check mplsInterfaceAvailableBandwidth against mplsInterfaceTotalBandwidth on a given MPLS-enabled interface, catching bandwidth exhaustion before new LSPs fail to establish. Comparing mplsInterfaceLabelMinIn/mplsInterfaceLabelMaxIn against current label usage reveals whether the interface's incoming label space is close to exhaustion, which would block new label bindings. mplsInterfaceAvailableBuffer dropping toward zero relative to mplsInterfaceTotalBuffer would flag buffer congestion risk on that MPLS interface, and the mplsLsrNotifications group would alert an admin in real time to such a resource-exhaustion or label-mapping fault.
What Can Be Monitored
- MPLS interface label range utilization
- MPLS interface bandwidth utilization
- MPLS interface buffer utilization
- label participation type
- MPLS LSR fault notifications
This MIB depends on
Related MIBs
Imported Objects
From IANA-ADDRESS-FAMILY-NUMBERS-MIB
| AddressFamilyNumbers |
From IF-MIB
| InterfaceIndex | |
| InterfaceIndexOrZero |
From INET-ADDRESS-MIB
| InetAddressIPv4 | |
| InetAddressIPv6 | |
| InetAddressType |
From SNMPv2-CONF
| MODULE-COMPLIANCE | |
| NOTIFICATION-GROUP | |
| OBJECT-GROUP |
From SNMPv2-SMI
| Counter32 | |
| Counter64 | |
| Gauge32 | |
| Integer32 | |
| MODULE-IDENTITY | |
| NOTIFICATION-TYPE | |
| OBJECT-TYPE | |
| Unsigned32 | |
| experimental |
From SNMPv2-TC
| RowPointer | |
| RowStatus | |
| StorageType | |
| TEXTUAL-CONVENTION | |
| TimeStamp | |
| TruthValue |
OIDs
| OID symbolic | OID numeric | Type | Access | Description |
|---|---|---|---|---|
| mplsHCInSegmentPerfGroup | 1.3.6.1.3.96.3.1.6 | Object(s) providing performance information specific to out-segments for which the object mplsInterfaceInOctets wraps around too quickly. | ||
| mplsHCOutSegmentPerfGroup | 1.3.6.1.3.96.3.1.7 | Object(s) providing performance information specific to out-segments for which the object mplsInterfaceOutOctets wraps around too quickly. | ||
| ADR mplsInSegmentAddrFamily | 1.3.6.1.3.96.1.3.1.4 | AddressFamilyNumbers | read-create | The IANA address family [IANAFamily] of the incoming packet. A value of other(0) indicates that the family type is either unknown or undefined. |
| INT mplsInSegmentAdminStatus | 1.3.6.1.3.96.1.3.1.10 | INTEGER | read-create | This value is used to represent the manager�s desired operational status of this segment. |
| C32 mplsInSegmentDiscards | 1.3.6.1.3.96.1.4.1.4 | Counter32 | read-only | The number of labeled packets received on this in- segment, which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a labeled packet could be to free up buffer space. |
| NTF mplsInSegmentDown | 1.3.6.1.3.96.2.2 | This notification is generated when a mplsInSegmentOperStatus object for one of the configured in-segments 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 mplsInSegmentOperStatus. | ||
| mplsInSegmentEntry | 1.3.6.1.3.96.1.3.1 | not-accessible | An entry in this table represents one incoming segment. An entry can be created by a network administrator or an SNMP agent, or an MPLS signaling protocol. The creator of the entry is denoted by mplsInSegmentOwner. An entry in this table is indexed by the ifIndex of the incoming interface and the (top) label. | |
| C32 mplsInSegmentErrors | 1.3.6.1.3.96.1.4.1.3 | Counter32 | read-only | The number of errored packets received on this segment. |
| mplsInSegmentGroup | 1.3.6.1.3.96.3.1.2 | Collection of objects needed to implement an in- segment. | ||
| C64 mplsInSegmentHCOctets | 1.3.6.1.3.96.1.4.1.5 | Counter64 | read-only | The total number of octets received. This is the 64 bit version of mplsInSegmentOctets. |
| NUM mplsInSegmentIfIndex | 1.3.6.1.3.96.1.3.1.1 | InterfaceIndexOrZero | not-accessible | This is a unique index for an entry in the MplsInSegmentTable. This value represents the interface index for the incoming MPLS interface. A value of zero represents an incoming label from the per-platform label space. In this case, the mplsInSegmentLabel is interpreted to be an MPLS-type label. |
| MPL mplsInSegmentLabel | 1.3.6.1.3.96.1.3.1.2 | MplsLabel | not-accessible | The incoming label for this segment. |
| I32 mplsInSegmentNPop | 1.3.6.1.3.96.1.3.1.3 | Integer32 | read-create | The number of labels to pop from the incoming packet. Normally only the top label is popped from the packet and used for all switching decisions for that packet. Note that technologies which do not support label popping should set this value to its default value of 1. |
| C32 mplsInSegmentOctets | 1.3.6.1.3.96.1.4.1.1 | Counter32 | read-only | This value represents the total number of octets received by this segment. |
| INT mplsInSegmentOperStatus | 1.3.6.1.3.96.1.3.1.11 | INTEGER | read-only | This value represents the actual operational status of this segment. |
| MPL mplsInSegmentOwner | 1.3.6.1.3.96.1.3.1.6 | MplsObjectOwner | read-create | Denotes the entity that created and is responsible for managing this segment. |
| C32 mplsInSegmentPackets | 1.3.6.1.3.96.1.4.1.2 | Counter32 | read-only | Total number of packets received by this segment. |
| TIM mplsInSegmentPerfDiscontinuityTime | 1.3.6.1.3.96.1.4.1.6 | TimeStamp | read-only | The value of sysUpTime on the most recent occasion at which any one or more of this segment's Counter32 or Counter64 suffered a discontinuity. If no such discontinuities have occurred since the last re- initialization of the local management subsystem, then this object contains a zero value. |
| mplsInSegmentPerfEntry | 1.3.6.1.3.96.1.4.1 | not-accessible | An entry in this table contains statistical information about one incoming segment which was configured in the mplsInSegmentTable. The counters in this entry should behave in a manner similar to that of the interface. | |
| mplsInSegmentPerfTable | 1.3.6.1.3.96.1.4 | not-accessible | This table contains statistical information for incoming MPLS segments to an LSR. | |
| ROW mplsInSegmentRowStatus | 1.3.6.1.3.96.1.3.1.8 | RowStatus | read-create | This variable is used to create, modify, and/or delete a row in this table. |
| STO mplsInSegmentStorageType | 1.3.6.1.3.96.1.3.1.9 | StorageType | read-create | This variable indicates the storage type for this object. |
| mplsInSegmentTable | 1.3.6.1.3.96.1.3 | not-accessible | This table contains a collection of incoming segments to an LSR. | |
| NUM mplsInSegmentTrafficParamPtr | 1.3.6.1.3.96.1.3.1.7 | RowPointer | read-create | This variable represents a pointer to the traffic parameter specification for this in-segment. This value may point at an entry in the mplsTrafficParamTable to indicate which mplsTrafficParamEntry is to be assigned to this segment. This value may optionally point at an externally defined traffic parameter specification table. A value of zero-dot-zero indicates best-effort treatment. By having the same value of this object, two or more segments can indicate resource sharing. |
| T/F mplsInSegmentTrapEnable | 1.3.6.1.3.96.1.15 | TruthValue | read-write | If this object is true, then it enables the generation of mplsInSegmentUp and mplsInSegmentDown traps, otherwise these traps are not emitted. |
| NTF mplsInSegmentUp | 1.3.6.1.3.96.2.1 | This notification is generated when a mplsInSegmentOperStatus object for one of the configured in-segments 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 mplsInSegmentOperStatus. | ||
| I32 mplsInSegmentXCIndex | 1.3.6.1.3.96.1.3.1.5 | Integer32 | read-only | Index into mplsXCTable which identifies which cross- connect entry this segment is part of. A value of zero indicates that this entry is not referred to by any cross-connect entry. When a cross-connect entry is created which this in-segment is a part of, this object is automatically updated to reflect the value of mplsXCIndex of that cross-connect entry. |
| MPL mplsInterfaceAvailableBandwidth | 1.3.6.1.3.96.1.1.1.7 | MplsBitRate | read-only | This value indicates the total amount of available bandwidth available on this interface and is specified in kilobits per second (Kbps). This value is calculated as the difference between the amount of bandwidth currently in use and that specified in mplsInterfaceTotalBandwidth. This variable is not applicable when applied to the interface with index 0. |
| MPL mplsInterfaceAvailableBuffer | 1.3.6.1.3.96.1.1.1.9 | MplsBufferSize | read-only | This value reflects the total amount of buffer space available on this interface. This variable is not applicable when applied to the interface with index 0. |
| mplsInterfaceConfEntry | 1.3.6.1.3.96.1.1.1 | not-accessible | An entry in this table is created by an LSR for every interface capable of supporting MPLS. The entry with index 0 represents the per-platform label space and contains parameters that apply to all interfaces that participate in the per-platform label space. Other entries defined in this table represent additional MPLS interfaces that may participate in either the per-platform or per- interface label spaces, or both. Additional information about label space participation of an interface is provided in the description clause of mplsInterfaceLabelParticipationType. | |
| NUM mplsInterfaceConfIndex | 1.3.6.1.3.96.1.1.1.1 | InterfaceIndexOrZero | not-accessible | This is a unique index for an entry in the MplsInterfaceConfTable. A non-zero index for an entry indicates the ifIndex for the corresponding interface entry in of the MPLS-layer in the ifTable. Note that the per-platform label space may apply to several interfaces, and therefore the configuration of the per-platform label space interface parameters will apply to all of the interfaces that are participating in the per-platform label space. |
| STO mplsInterfaceConfStorageType | 1.3.6.1.3.96.1.1.1.11 | StorageType | read-create | The storage type for this entry. |
| mplsInterfaceConfTable | 1.3.6.1.3.96.1.1 | not-accessible | This table specifies per-interface MPLS capability and associated information. | |
| C32 mplsInterfaceFailedLabelLookup | 1.3.6.1.3.96.1.2.1.4 | Counter32 | read-only | This value indicates the number of labeled packets that have been received on this interface and were discarded because there were no matching entries found for them in mplsInSegmentTable. |
| mplsInterfaceGroup | 1.3.6.1.3.96.3.1.1 | Collection of objects needed for MPLS interface configuration and performance information. | ||
| C32 mplsInterfaceInDiscards | 1.3.6.1.3.96.1.2.1.3 | Counter32 | read-only | The number of inbound labeled packets, which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a labeled packet could be to free up buffer space. |
| G32 mplsInterfaceInLabelsUsed | 1.3.6.1.3.96.1.2.1.1 | Gauge32 | read-only | This value indicates the specific number of labels that are in use at this point in time on this interface in the incoming direction. |
| C32 mplsInterfaceInPackets | 1.3.6.1.3.96.1.2.1.2 | Counter32 | read-only | This variable reflects the number of labeled packets that have been received on this interface. |
| MPL mplsInterfaceLabelMaxIn | 1.3.6.1.3.96.1.1.1.3 | MplsLabel | read-only | This is the maximum value of an MPLS label that this LSR is willing to receive on this interface. |
| MPL mplsInterfaceLabelMaxOut | 1.3.6.1.3.96.1.1.1.5 | MplsLabel | read-only | This is the maximum value of an MPLS label that this LSR is willing to send on this interface. |
| MPL mplsInterfaceLabelMinIn | 1.3.6.1.3.96.1.1.1.2 | MplsLabel | read-only | This is the minimum value of an MPLS label that this LSR is willing to receive on this interface. |
| MPL mplsInterfaceLabelMinOut | 1.3.6.1.3.96.1.1.1.4 | MplsLabel | read-only | This is the minimum value of an MPLS label that this LSR is willing to send on this interface. |
| BIT mplsInterfaceLabelParticipationType | 1.3.6.1.3.96.1.1.1.10 | Bits | read-only | Either the perPlatform(0) or perInterface(1) bit MUST be set. If the value of the mplsInterfaceConfIndex for this entry is zero, then only the perPlatform(0) bit MUST be set and the perInterface(1) bit is meaningless. If the perInterface(1) bit is set then the value of mplsInterfaceLabelMinIn, mplsInterfaceLabelMaxIn, mplsInterfaceLabelMinOut, and mplsInterfaceLabelMaxOut for this entry reflect the label ranges for this interface. If only the perPlatform(0) bit is set, then the value of mplsInterfaceLabelMinIn, mplsInterfaceLabelMaxIn, mplsInterfaceLabelMinOut, and mplsInterfaceLabelMaxOut for this entry must be identical to the instance of these objects with index 0. |
| C32 mplsInterfaceOutDiscards | 1.3.6.1.3.96.1.2.1.7 | Counter32 | read-only | The number of outbound labeled packets, which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a labeled packet could be to free up buffer space. |
| C32 mplsInterfaceOutFragments | 1.3.6.1.3.96.1.2.1.8 | Counter32 | read-only | This variable indicates the number of outgoing MPLS packets that required fragmentation before transmission on this interface. |
| G32 mplsInterfaceOutLabelsUsed | 1.3.6.1.3.96.1.2.1.5 | Gauge32 | read-only | Indicates the number of top-most labels in the outgoing label stacks that are in use at this point in time on this interface. |
| C32 mplsInterfaceOutPackets | 1.3.6.1.3.96.1.2.1.6 | Counter32 | read-only | This variable contains the number of labeled packets that have been transmitted on this interface. |
| mplsInterfacePerfEntry | 1.3.6.1.3.96.1.2.1 | not-accessible | An entry in this table is created by the LSR for every interface capable of supporting MPLS. Its is an extension to the mplsInterfaceConfEntry table. | |
| mplsInterfacePerfTable | 1.3.6.1.3.96.1.2 | not-accessible | This table provides MPLS performance information on a per-interface basis. | |
| MPL mplsInterfaceTotalBandwidth | 1.3.6.1.3.96.1.1.1.6 | MplsBitRate | read-only | This value indicates the total amount of usable bandwidth on this interface and is specified in kilobits per second (Kbps). This variable is not applicable when applied to the interface with index 0. |
| MPL mplsInterfaceTotalBuffer | 1.3.6.1.3.96.1.1.1.8 | MplsBufferSize | read-only | This value indicates the total amount of buffer space allocated for this interface. This variable is not applicable when applied to the interface with index 0. |
| mplsLabelStackEntry | 1.3.6.1.3.96.1.12.1 | not-accessible | An entry in this table represents one label which is to be pushed onto an outgoing packet, beneath the top label. An entry can be created by a network administrator or by an SNMP agent as instructed by an MPLS signaling protocol. | |
| mplsLabelStackGroup | 1.3.6.1.3.96.3.1.11 | Objects needed to support label stacking. | ||
| I32 mplsLabelStackIndex | 1.3.6.1.3.96.1.12.1.1 | Integer32 | not-accessible | Primary index for this row identifying a stack of labels to be pushed on an outgoing packet, beneath the top label. |
| I32 mplsLabelStackIndexNext | 1.3.6.1.3.96.1.11 | Integer32 | read-only | This object contains an appropriate value to be used for mplsLabelStackIndex when creating entries in the mplsLabelStackTable. The value 0 indicates that no unassigned entries are available. To obtain an mplsLabelStackIndex value for a new entry, the manager issues a management protocol retrieval operation to obtain the current value of this object. After each retrieval operation, the agent should modify the value to reflect the next unassigned index. After a manager retrieves a value the agent will determine through its local policy when this index value will be made available for reuse. |
| MPL mplsLabelStackLabel | 1.3.6.1.3.96.1.12.1.3 | MplsLabel | read-create | The label to pushed. |
| I32 mplsLabelStackLabelIndex | 1.3.6.1.3.96.1.12.1.2 | Integer32 | not-accessible | Secondary index for this row identifying one label of the stack. Note that an entry with a smaller mplsLabelStackLabelIndex would refer to a label higher up the label stack and would be popped at a downstream LSR before a label represented by a higher mplsLabelStackLabelIndex at a downstream LSR. |
| ROW mplsLabelStackRowStatus | 1.3.6.1.3.96.1.12.1.4 | RowStatus | read-create | For creating, modifying, and deleting this row. |
| STO mplsLabelStackStorageType | 1.3.6.1.3.96.1.12.1.5 | StorageType | read-create | Defines the storage type for this object. |
| mplsLabelStackTable | 1.3.6.1.3.96.1.12 | not-accessible | This table specifies the label stack to be pushed onto a packet, beneath the top label. Entries into this table are referred to from mplsXCTable. | |
| mplsLsrCompliances | 1.3.6.1.3.96.3.2 | |||
| mplsLsrConformance | 1.3.6.1.3.96.3 | |||
| mplsLsrGroups | 1.3.6.1.3.96.3.1 | |||
| mplsLsrMIB | 1.3.6.1.3.96 | This MIB contains managed object definitions for the Multiprotocol Label Switching (MPLS) Router as defined in: Rosen, E., Viswanathan, A., and R. Callon, Multiprotocol Label Switching Architecture, Internet Draft , February 2000. | ||
| mplsLsrModuleCompliance | 1.3.6.1.3.96.3.2.1 | Compliance statement for agents that support the MPLS LSR MIB. | ||
| mplsLsrNotificationGroup | 1.3.6.1.3.96.3.1.13 | Set of notifications implemented in this module. None is mandatory. | ||
| mplsLsrNotifications | 1.3.6.1.3.96.2 | |||
| mplsLsrObjects | 1.3.6.1.3.96.1 | |||
| I32 mplsMaxLabelStackDepth | 1.3.6.1.3.96.1.10 | Integer32 | read-only | The maximum stack depth supported by this LSR. |
| INT mplsOutSegmentAdminStatus | 1.3.6.1.3.96.1.6.1.13 | INTEGER | read-create | The desired operational status of this segment. |
| C32 mplsOutSegmentDiscards | 1.3.6.1.3.96.1.7.1.4 | Counter32 | read-only | The number of labeled packets received on this out- segment, which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a labeled packet could be to free up buffer space. |
| NTF mplsOutSegmentDown | 1.3.6.1.3.96.2.4 | This notification is generated when a mplsOutSegmentOperStatus object for one of the configured out-segments 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 mplsOutSegmentOperStatus. | ||
| mplsOutSegmentEntry | 1.3.6.1.3.96.1.6.1 | not-accessible | An entry in this table represents one outgoing segment. An entry can be created by a network administrator or an SNMP agent, or an MPLS signaling protocol. The object mplsOutSegmentOwner indicates the creator of this entry. | |
| C32 mplsOutSegmentErrors | 1.3.6.1.3.96.1.7.1.3 | Counter32 | read-only | Number of packets that could not be sent due to errors on this segment. |
| mplsOutSegmentGroup | 1.3.6.1.3.96.3.1.3 | Collection of objects needed to implement an out- segment. | ||
| C64 mplsOutSegmentHCOctets | 1.3.6.1.3.96.1.7.1.5 | Counter64 | read-only | Total number of octets sent. This is the 64 bit version of mplsOutSegmentOctets. |
| NUM mplsOutSegmentIfIndex | 1.3.6.1.3.96.1.6.1.2 | InterfaceIndex | read-create | This value contains the interface index of the outgoing interface. |
| I32 mplsOutSegmentIndex | 1.3.6.1.3.96.1.6.1.1 | Integer32 | not-accessible | This value contains a unique index for this row. While a value of 0 is not valid as an index for this row it can be supplied as a valid value to index mplsXCTable to access entries for which no out- segment has been configured. |
| I32 mplsOutSegmentIndexNext | 1.3.6.1.3.96.1.5 | Integer32 | read-only | This object contains the next appropriate value to be used for mplsOutSegmentIndex when creating entries in the mplsOutSegmentTable. If the number of unassigned entries is exhausted, this object will take on the value of 0. To obtain the mplsOutSegmentIndex value for a new entry, the manager must first issue a management protocol retrieval operation to obtain the current value of this object. The agent should modify the value to reflect the next unassigned index after each retrieval operation. After a manager retrieves a value the agent will determine through its local policy when this index value will be made available for reuse. |
| IPt mplsOutSegmentNextHopIpAddrType | 1.3.6.1.3.96.1.6.1.5 | InetAddressType | read-create | Indicates whether the next hop address is IPv4 or IPv6. Note that a value of unknown (0) is valid only when the outgoing interface is of type point-to- point. |
| ADR mplsOutSegmentNextHopIpv4Addr | 1.3.6.1.3.96.1.6.1.6 | InetAddressIPv4 | read-create | IPv4 Address of the next hop. Its value is significant only when mplsOutSegmentNextHopIpAddrType is ipV4 (1), otherwise it should return a value of 0. |
| ADR mplsOutSegmentNextHopIpv6Addr | 1.3.6.1.3.96.1.6.1.7 | InetAddressIPv6 | read-create | IPv6 address of the next hop. Its value is significant only when mplsOutSegmentNextHopIpAddrType is ipV6 (2), otherwise it should return a value of 0. |
| C32 mplsOutSegmentOctets | 1.3.6.1.3.96.1.7.1.1 | Counter32 | read-only | This value contains the total number of octets sent on this segment. |
| INT mplsOutSegmentOperStatus | 1.3.6.1.3.96.1.6.1.14 | INTEGER | read-only | The actual operational status of this segment. |
| MPL mplsOutSegmentOwner | 1.3.6.1.3.96.1.6.1.9 | MplsObjectOwner | read-create | Denotes the entity which created and is responsible for managing this segment. |
| C32 mplsOutSegmentPackets | 1.3.6.1.3.96.1.7.1.2 | Counter32 | read-only | This value contains the total number of packets sent on this segment. |
| TIM mplsOutSegmentPerfDiscontinuityTime | 1.3.6.1.3.96.1.7.1.6 | TimeStamp | read-only | The value of sysUpTime on the most recent occasion at which any one or more of this segment's Counter32 or Counter64 suffered a discontinuity. If no such discontinuities have occurred since the last re- initialization of the local management subsystem, then this object contains a zero value. |
| mplsOutSegmentPerfEntry | 1.3.6.1.3.96.1.7.1 | not-accessible | An entry in this table contains statistical information about one outgoing segment configured in mplsOutSegmentTable. | |
| mplsOutSegmentPerfTable | 1.3.6.1.3.96.1.7 | not-accessible | This table contains statistical information about outgoing segments from an LSR. The counters in this entry should behave in a manner similar to that of the interface. | |
| T/F mplsOutSegmentPushTopLabel | 1.3.6.1.3.96.1.6.1.3 | TruthValue | read-create | This value indicates whether or not a top label should be pushed onto the outgoing packet's label stack. The value of this variable must be set to true if the outgoing interface does not support pop- and-go (for example an ATM interface) or if it is a tunnel origination. Note that it is considered an error in the case that mplsOutSegmentPushTopLabel is set to false, but the cross-connect entry which refers to this out-segment has a non-zero mplsLabelStackIndex. The LSR MUST ensure that this situation does not happen |
| ROW mplsOutSegmentRowStatus | 1.3.6.1.3.96.1.6.1.11 | RowStatus | read-create | For creating, modifying, and deleting this row. |
| STO mplsOutSegmentStorageType | 1.3.6.1.3.96.1.6.1.12 | StorageType | read-create | This variable indicates the storage type for this object. |
| mplsOutSegmentTable | 1.3.6.1.3.96.1.6 | not-accessible | This table contains a representation of the outgoing segments from an LSR. | |
| MPL mplsOutSegmentTopLabel | 1.3.6.1.3.96.1.6.1.4 | MplsLabel | read-create | If mplsOutSegmentPushTopLabel is true then this represents the label that should be pushed onto the top of the outgoing packet's label stack. |
| NUM mplsOutSegmentTrafficParamPtr | 1.3.6.1.3.96.1.6.1.10 | RowPointer | read-create | This variable represents a pointer to the traffic parameter specification for this out-segment. This value may point at an entry in the mplsTrafficParamTable to indicate which mplsTrafficParamEntry is to be assigned to this segment. This value may optionally point at an externally defined traffic parameter specification table. A value of zero-dot-zero indicates best- effort treatment. By having the same value of this object, two or more segments can indicate resource sharing. |
| T/F mplsOutSegmentTrapEnable | 1.3.6.1.3.96.1.16 | TruthValue | read-write | If this object is true, then it enables the generation of mplsOutSegmentUp and mplsOutSegmentDown traps, otherwise these traps are not emitted. |
| NTF mplsOutSegmentUp | 1.3.6.1.3.96.2.3 | This notification is generated when a mplsOutSegmentOperStatus object for one of the configured out-segments 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 mplsOutSegmentOperStatus. | ||
| I32 mplsOutSegmentXCIndex | 1.3.6.1.3.96.1.6.1.8 | Integer32 | read-only | Index into mplsXCTable which identifies which cross- connect entry this segment is part of. A value of zero indicates that this entry is not referred to by any cross-connect entry. When a cross-connect entry is created which this out-segment is a part of, this object is automatically updated to reflect the value of mplsXCIndex of that cross-connect entry. |
| mplsPerfGroup | 1.3.6.1.3.96.3.1.5 | Collection of objects providing performance information about an LSR. | ||
| mplsSegmentDiscontinuityGroup | 1.3.6.1.3.96.3.1.12 | A collection of objects providing information specific to segment discontinuities.. | ||
| mplsTrafficParamEntry | 1.3.6.1.3.96.1.14.1 | not-accessible | An entry in this table represents the TrafficParam objects for one or more in or out segments. A single entry can be pointed to by multiple segments indicating resource sharing. | |
| mplsTrafficParamGroup | 1.3.6.1.3.96.3.1.8 | Object(s) required for supporting QoS resource reservation. | ||
| I32 mplsTrafficParamIndex | 1.3.6.1.3.96.1.14.1.1 | Integer32 | not-accessible | Uniquely identifies this row of the table. Note that zero represents an invalid index. |
| I32 mplsTrafficParamIndexNext | 1.3.6.1.3.96.1.13 | Integer32 | read-only | This object contains an appropriate value which will be used for mplsTrafficParamIndex when creating entries in the mplsTrafficParamTable. The value 0 indicates that no unassigned entries are available. To obtain the mplsTrafficParamIndex value for a new entry, the manager issues a management protocol retrieval operation to obtain the current value of this object. After each retrieval operation, the agent should modify the value to reflect the next unassigned index. After a manager retrieves a value the agent will determine through its local policy when this index value will be made available for reuse. |
| MPL mplsTrafficParamMaxBurstSize | 1.3.6.1.3.96.1.14.1.4 | MplsBurstSize | read-create | Maximum burst size in bytes. |
| MPL mplsTrafficParamMaxRate | 1.3.6.1.3.96.1.14.1.2 | MplsBitRate | read-create | Maximum rate in kilobits/second. |
| MPL mplsTrafficParamMeanRate | 1.3.6.1.3.96.1.14.1.3 | MplsBitRate | read-create | Mean rate in kilobits/second. |
| ROW mplsTrafficParamRowStatus | 1.3.6.1.3.96.1.14.1.5 | RowStatus | read-create | For creating, modifying, and deleting this row. |
| STO mplsTrafficParamStorageType | 1.3.6.1.3.96.1.14.1.6 | StorageType | read-create | The storage type for this object. |
| mplsTrafficParamTable | 1.3.6.1.3.96.1.14 | not-accessible | This table specifies the Traffic Parameter objects for in and out-segments. | |
| INT mplsXCAdminStatus | 1.3.6.1.3.96.1.9.1.8 | INTEGER | read-create | The desired operational status of this segment. |
| NTF mplsXCDown | 1.3.6.1.3.96.2.6 | This notification is generated when a mplsXCOperStatus object for one of the configured cross-connect entries 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 mplsXCOperStatus. | ||
| mplsXCEntry | 1.3.6.1.3.96.1.9.1 | not-accessible | A row in this table represents one cross-connect entry. The following objects index it: - cross-connect index mplsXCIndex that uniquely identifies a group of cross-connect entries - interface index of the in-segment, mplsInSegmentIfIndex - incoming label(s), mplsInSegmentLabel - out-segment index, mplsOutSegmentIndex Originating LSPs: These are represented by using the special combination of values mplsInSegmentIfIndex=0 and mplsInSegmentLabel=0 as indexes. In this case the mplsOutSegmentIndex MUST be non-zero. Terminating LSPs: These are represented by using the special value mplsOutSegmentIndex=0 as index. Special labels: Entries indexed by reserved MPLS label values 0 through 15 imply terminating LSPs and MUST have mplsOutSegmentIfIndex = 0. Note that situations where LSPs are terminated with incoming label equal to 0, should have mplsInSegmentIfIndex = 0 as well, but can be distinguished from originating LSPs because the mplsOutSegmentIfIndex = 0. The mplsOutSegmentIfIndex MUST only be set to 0 in cases of terminating LSPs. An entry can be created by a network administrator or by an SNMP agent as instructed by an MPLS signaling protocol. | |
| mplsXCGroup | 1.3.6.1.3.96.3.1.4 | Collection of objects needed to implement a cross-connect entry. | ||
| I32 mplsXCIndex | 1.3.6.1.3.96.1.9.1.1 | Integer32 | not-accessible | Primary index for the row identifying a group of cross-connect segments. |
| I32 mplsXCIndexNext | 1.3.6.1.3.96.1.8 | Integer32 | read-only | This object contains an appropriate value to be used for mplsXCIndex when creating entries in the mplsXCTable. The value 0 indicates that no unassigned entries are available. To obtain the value of mplsXCIndex for a new entry in the mplsXCTable, the manager issues a management protocol retrieval operation to obtain the current value of mplsXCIndex. After each retrieval operation, the agent should modify the value to reflect the next unassigned index. After a manager retrieves a value the agent will determine through its local policy when this index value will be made available for reuse. |
| mplsXCIsNotPersistentGroup | 1.3.6.1.3.96.3.1.10 | Objects needed to support non-persistent cross- connects. | ||
| T/F mplsXCIsPersistent | 1.3.6.1.3.96.1.9.1.4 | TruthValue | read-create | Denotes whether or not this cross-connect entry and associated in- and out-segments should be restored automatically after failures. This value MUST be set to false in cases where this cross-connect entry was created by a signaling protocol. |
| mplsXCIsPersistentGroup | 1.3.6.1.3.96.3.1.9 | Objects needed to support persistent cross- connects. | ||
| I32 mplsXCLabelStackIndex | 1.3.6.1.3.96.1.9.1.3 | Integer32 | read-create | Primary index into mplsLabelStackTable identifying a stack of labels to be pushed beneath the top label. Note that the top label identified by the out- segment ensures that all the components of a multipoint-to-point connection have the same outgoing label. A value of 0 indicates that no labels are to be stacked beneath the top label. |
| MPL mplsXCLspId | 1.3.6.1.3.96.1.9.1.2 | MplsLSPID | read-create | This value identifies the label switched path that this cross-connect entry belongs to. |
| INT mplsXCOperStatus | 1.3.6.1.3.96.1.9.1.9 | INTEGER | read-only | The actual operational status of this cross- connect. |
| MPL mplsXCOwner | 1.3.6.1.3.96.1.9.1.5 | MplsObjectOwner | read-create | Denotes the entity that created and is responsible for managing this cross-connect. |
| ROW mplsXCRowStatus | 1.3.6.1.3.96.1.9.1.6 | RowStatus | read-create | For creating, modifying, and deleting this row. |
| STO mplsXCStorageType | 1.3.6.1.3.96.1.9.1.7 | StorageType | read-create | Defines the storage type for this object. |
| mplsXCTable | 1.3.6.1.3.96.1.9 | not-accessible | This table specifies information for switching between LSP segments. It supports point-to-point, point-to-multipoint and multipoint-to-point connections. mplsLabelStackTable specifies the label stack information for a cross-connect LSR and is referred to from mplsXCTable. | |
| T/F mplsXCTrapEnable | 1.3.6.1.3.96.1.17 | TruthValue | read-write | If this object is true, then it enables the generation of mplsXCUp and mplsXCDown traps, otherwise these traps are not emitted. |
| NTF mplsXCUp | 1.3.6.1.3.96.2.5 | This notification is generated when a mplsXCOperStatus object for one of the configured cross-connect entries 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 mplsXCOperStatus. |
FAQ
What does MPLS-LSR-MIB expose for troubleshooting label-switching capacity on an MPLS core router?
It models per-interface label space and incoming-to-outgoing label cross-connect mappings, along with label-range, bandwidth, and buffer utilization per MPLS interface, plus LSR fault notifications. This lets an engineer spot forwarding-plane resource pressure — like label-space exhaustion or bandwidth/buffer strain on an MPLS interface — before it causes dropped traffic.
Why would an engineer check MPLS-LSR-MIB before digging into MPLS-TE-STD-MIB when a label-switching issue appears?
MPLS-LSR-MIB is the base MPLS forwarding MIB — it covers the fundamental interface label configuration and cross-connect mappings that traffic-engineering MIBs like MPLS-TE-STD-MIB build on top of, so confirming basic label participation and utilization here first narrows down whether the problem is in core label switching or in the TE layer above it.
RFC description
MPLS Label Switch Router MIB (RFC 3813) for managing MPLS label switching, FEC, and forwarding information base.
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