The Label Distribution Protocol (LDP) dynamically distributes FEC-label mapping information between LSRs to establish LSPs. LSPs can be established between two adjacent LSRs or terminate at the egress node of the network, so that all intermediate nodes in the network use label switching.

MPLS-LDP-STD-MIB is a public MIB defined by RFC 3815.

MIB file name

rfc3815-mpls-ldp-std.mib

Root object

iso(1).org(3).dod(6).internet(1).mgmt(2).mib-2(1).transmission(10).mplsStdMIB(166).mplsLdpStdMIB(4)

Scalar objects

mplsLdpLsrId (1.3.6.1.2.1.10.166.4.1.1.1)

Object (OID)

Access

Syntax

Value range

Description

Implementation

mplsLdpLsrId (1.3.6.1.2.1.10.166.4.1.1.1)

read-only

Octet string

(0..65535)

LDP LSR ID.

As per the MIB.

mplsLdpLsrLoopDetectionCapable (1.3.6.1.2.1.10.166.4.1.1.2)

Object (OID)

Access

Syntax

Value range

Description

Implementation

mplsLdpLsrLoopDetectionCapable (1.3.6.1.2.1.10.166.4.1.1.2)

read-only

Integer

1:none(1)

2:other(2)

3:hopCount(3)

4:pathVector(4)

5:hopCountAndPathVector(5)

Whether the LSR supports loop detection.

The value of this object is fixed at hopCountAndPathVector(5).

mplsLdpEntityLastChange (1.3.6.1.2.1.10.166.4.1.2.1)

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsLdpEntityLastChange (1.3.6.1.2.1.10.166.4.1.2.1)	read-only	TimeTicks	Standard MIB values.	System time when an entry in the mplsLdpEntityTable table was most recently added, deleted, or modified.	As per the MIB.

mplsLdpEntityIndexNext (1.3.6.1.2.1.10.166.4.1.2.2)

Object (OID)

Access

Syntax

Value range

Description

Implementation

mplsLdpEntityIndexNext (1.3.6.1.2.1.10.166.4.1.2.2)

read-only

Unsigned32

(0..4294967295)

Next LDP entity index.

This object returns 0, which indicates that the network administrator cannot create mplsLdpEntityTable.

mplsLdpPeerLastChange (1.3.6.1.2.1.10.166.4.1.3.1)

Object (OID)

Access

Syntax

Value range

Description

Implementation

mplsLdpPeerLastChange (1.3.6.1.2.1.10.166.4.1.3.1)

read-only

TimeStamp

INTEGER

(0..4294967295)

Time when the entry was edited.

As per the MIB.

mplsFecLastChange (1.3.6.1.2.1.10.166.4.1.3.8.1)

Object (OID)

Access

Syntax

Value range

Description

Implementation

mplsFecLastChange (1.3.6.1.2.1.10.166.4.1.3.8.1)

read-only

TimeStamp

INTEGER

(0..4294967295)

System time when the LDP FEC entry was most recently modified.

Not supported

mplsFecIndexNext (1.3.6.1.2.1.10.166.4.1.3.8.2)

Object (OID)

Access

Syntax

Value range

Description

Implementation

mplsFecIndexNext (1.3.6.1.2.1.10.166.4.1.3.8.2)

read-only

IndexIntegerNextFree

Gauge32

(1..4294967295)

Next LDP FEC index.

This object returns 0, which indicates that the network administrator cannot create mplsFecTable.

Tabular objects

mplsLdpEntityTable

About this table

This table contains LDP entity information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

The table indexes are mplsLdpEntityLdpId and mplsLdpEntityIndex.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsLdpEntityLdpId (1.3.6.1.2.1.10.166.4.1.2.3.1.1)	not-accessible	MplsLdpIdentifier	OCTET STRING (6,6)	LDP entity ID.	As per the MIB.
mplsLdpEntityIndex (1.3.6.1.2.1.10.166.4.1.2.3.1.2)	not-accessible	Unsigned32	Unsigned32 (1,4294967295)	LDP entity index.	As per the MIB.
mplsLdpEntityProtocolVersion (1.3.6.1.2.1.10.166.4.1.2.3.1.3)	read-create	Unsigned32	Unsigned32 (1~65535)	Version number of the LDP protocol which will be used in the session initialization message.	As per the MIB.
mplsLdpEntityAdminStatus (1.3.6.1.2.1.10.166.4.1.2.3.1.4)	read-create	INTEGER	enable(1) disable(2)	Administrative state of the LDP entity.	As per the MIB.
mplsLdpEntityOperStatus (1.3.6.1.2.1.10.166.4.1.2.3.1.5)	read-only	INTEGER	1:unknown(1) 2:enabled(2) 3:disabled(3)	Operational state of the LDP entity.	As per the MIB. Default: enabled.
mplsLdpEntityTcpPort (1.3.6.1.2.1.10.166.4.1.2.3.1.6)	read-create	Unsigned32	Unsigned32 (0..65535)	TCP port number of the LDP entity.	As per the MIB. Default: 646.
mplsLdpEntityUdpDscPort (1.3.6.1.2.1.10.166.4.1.2.3.1.7)	read-create	Unsigned32	Unsigned32 (0..65535)	UDP port number of the LDP entity.	As per the MIB. Default: 646.
mplsLdpEntityMaxPduLength (1.3.6.1.2.1.10.166.4.1.2.3.1.8)	read-create	Unsigned32	Unsigned32 (256..65535)	Maximum PDU length of the LDP entity.	As per the MIB. Default: 4096.
mplsLdpEntityKeepAliveHoldTimer (1.3.6.1.2.1.10.166.4.1.2.3.1.9)	read-create	Unsigned32	Unsigned32 (1..65535)	Keepalive interval of the LDP entity.	As per the MIB. Default: 40.
mplsLdpEntityHelloHoldTimer (1.3.6.1.2.1.10.166.4.1.2.3.1.10)	read-create	Unsigned32	Unsigned32 (0..65535)	Hello interval of the LDP entity.	As per the MIB. Default: 0. If mplsLdpEntityTargetPeer is set to false, the actual default value is 15. If mplsLdpEntityTargetPeer is set to true, the actual default value is 45.
mplsLdpEntityInitSessionThreshold (1.3.6.1.2.1.10.166.4.1.2.3.1.11)	read-create	Integer32	Integer32 (0..100)	LDP entity session initialization threshold.	As per the MIB. Default: 8.
mplsLdpEntityLabelDistMethod (1.3.6.1.2.1.10.166.4.1.2.3.1.12)	read-create	INTEGER	downstreamOnDemand(1) downstreamUnsolicited(2)	LDP entity label distribution method.	As per the MIB.
mplsLdpEntityLabelRetentionMode (1.3.6.1.2.1.10.166.4.1.2.3.1.13)	read-create	INTEGER	conservative(1) liberal(2)	Label retention mode used by the LDP entity.	As per the MIB.
mplsLdpEntityPathVectorLimit (1.3.6.1.2.1.10.166.4.1.2.3.1.14)	read-create	Integer32	Integer32 (0..255)	LDP entity path vector limit.	As per the MIB. 0 indicates that loop detection is not enabled.
mplsLdpEntityHopCountLimit (1.3.6.1.2.1.10.166.4.1.2.3.1.15)	read-create	Integer32	Integer32 (0..255)	LDP entity hop limit.	As per the MIB. 0 indicates that loop detection is not enabled.
mplsLdpEntityTransportAddrKind (1.3.6.1.2.1.10.166.4.1.2.3.1.16)	read-create	INTEGER	1:Interface(1) 2:loopback(2)	LDP entity transport address type.	As per the MIB. Default: loopback(2).
mplsLdpEntityTargetPeer (1.3.6.1.2.1.10.166.4.1.2.3.1.17)	read-create	INTEGER	true(1) false(2)	If this LDP entity uses targeted peer, set this to true.	As per the MIB. Default: false.
mplsLdpEntityTargetPeerAddrType (1.3.6.1.2.1.10.166.4.1.2.3.1.18)	read-create	InetAddressType	INTEGER unknown (0) , ipv4(1) , ipv6 (2) , ipv4z (3) , ipv6z (4), dns(16)	Type of the internetwork layer address used for the Extended Discovery.	As per the MIB. Supports only ipv4.
mplsLdpEntityTargetPeerAddr (1.3.6.1.2.1.10.166.4.1.2.3.1.19)	read-create	OCTET STRING	OCTET STRING (0..255)	The value of the internetwork layer address used for the Extended Discovery.	As per the MIB.
mplsLdpEntityLabelType (1.3.6.1.2.1.10.166.4.1.2.3.1.20)	read-create	INTEGER	generic(1), atmParameters(2), frameRelayParameters(3)	LDP entity label type.	As per the MIB.
mplsLdpEntityDiscontinuityTime (1.3.6.1.2.1.10.166.4.1.2.3.1.21)	read-only	TimeTicks	Standard MIB values.	System time when any one or more of this entity's counters suffered a discontinuity most recently.	As per the MIB.
mplsLdpEntityStorageType (1.3.6.1.2.1.10.166.4.1.2.3.1.22)	read-create	INTEGER	other(1), volatile(2), nonVolatile(3), permanent(4), readOnly(5)	Storage type for the LDP entity.	As per the MIB.
mplsLdpEntityRowStatus (1.3.6.1.2.1.10.166.4.1.2.3.1.23)	read-create	INTEGER	active(1), notInService(2), notReady(3), createAndGo(4), createAndWait(5), destroy(6)	Row status.	As per the MIB.

mplsLdpEntityStatsTable

About this table

This table contains LDP entity statistics information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

This table does not contain indexes.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsLdpEntityStatsSessionAttempts (1.3.6.1.2.1.10.166.4.1.2.4.1.1)	read-only	Counter32	Counter32 (0..4294967295)	Session initialization messages sent or received by this LDP entity.	As per the MIB.
mplsLdpEntityStatsSessionRejectedNoHelloErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.2)	read-only	Counter32	Counter32 (0..4294967295)	Session Rejected (No Hello Error) notifications sent or received by the LDP entity.	As per the MIB.
mplsLdpEntityStatsSessionRejectedAdErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.3)	read-only	Counter32	Counter32 (0..4294967295)	Session Rejected (Parameters Advertisement Mode Error) notifications sent or received by the LDP entity.	As per the MIB.
mplsLdpEntityStatsSessionRejectedMaxPduErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.4)	read-only	Counter32	Counter32 (0..4294967295)	Session Rejected (Parameters Max Pdu Length Error) notifications sent or received by the LDP entity.	As per the MIB.
mplsLdpEntityStatsSessionRejectedLRErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.5)	read-only	Counter32	Counter32 (0..4294967295)	Session Rejected (Parameters Label Range) notifications sent or received by the LDP entity.	As per the MIB.
mplsLdpEntityStatsBadLdpIdentifierErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.6)	read-only	Counter32	Counter32 (0..4294967295)	Number of Bad LDP Identifier Fatal Errors detected by the sessions associated with this LDP entity.	As per the MIB.
mplsLdpEntityStatsBadPduLengthErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.7)	read-only	Counter32	Counter32 (0..4294967295)	Number of Bad PDU Length Fatal Errors detected by the sessions associated with this LDP entity.	As per the MIB.
mplsLdpEntityStatsBadMessageLengthErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.8)	read-only	Counter32	Counter32 (0..4294967295)	Number of Bad Message Length Fatal Errors detected by the sessions associated with this LDP entity.	As per the MIB.
mplsLdpEntityStatsBadTlvLengthErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.9)	read-only	Counter32	Counter32 (0..4294967295)	Number of Bad TLV Length Fatal Errors detected by the sessions associated with this LDP entity.	As per the MIB.
mplsLdpEntityStatsMalformedTlvValueErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.10)	read-only	Counter32	Counter32 (0..4294967295)	Number of Malformed TLV Value Fatal Errors detected by the sessions associated with this LDP entity.	As per the MIB.
mplsLdpEntityStatsKeepAliveTimerExpErrors (1.3.6.1.2.1.10.166.4.1.2.4.1.11)	read-only	Counter32	Counter32 (0..4294967295)	Number of Session Keep Alive Timer Expired Fatal Errors detected by the sessions associated with this LDP entity.	As per the MIB.
mplsLdpEntityStatsShutdownReceivedNotifications (1.3.6.1.2.1.10.166.4.1.2.4.1.12)	read-only	Counter32	Counter32 (0..4294967295)	Number of shutdown notifications received by sessions associated with the LDP entity.	As per the MIB.
mplsLdpEntityStatsShutdownSentNotifications (1.3.6.1.2.1.10.166.4.1.2.4.1.13)	read-only	Counter32	Counter32 (0..4294967295)	Number of shutdown notifications sent by sessions associated with the LDP entity.	As per the MIB.

mplsLdpPeerTable

About this table

This table contains LDP peer information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

The table index is mplsLdpPeerLdpId.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsLdpPeerLdpId (1.3.6.1.2.1.10.166.4.1.3.2.1.1)	not-accessible	OCTET STRING	OCTET STRING (0..65535)	LDP ID of the LDP peer.	As per the MIB.
mplsLdpPeerLabelDistMethod (1.3.6.1.2.1.10.166.4.1.3.2.1.2)	read-only	INTEGER	downstreamOnDemand(1), downstreamUnsolicited(2)	Label distribution method of the LDP peer.	As per the MIB.
mplsLdpPeerPathVectorLimit (1.3.6.1.2.1.10.166.4.1.3.2.1.3)	read-only	Integer32	Integer32 (0..255)	Path vector limit information about the LDP peer.	As per the MIB.
mplsLdpPeerTransportAddrType (1.3.6.1.2.1.10.166.4.1.3.2.1.4)	read-only	INTEGER	unknown(0), ipv4(1), ipv6(2), ipv4z(3), ipv6z(4), dns(16)	LDP peer address type.	As per the MIB.
mplsLdpPeerTransportAddr (1.3.6.1.2.1.10.166.4.1.3.2.1.5)	read-only	OCTET STRING	OCTET STRING ( 0..255)	LDP peer address.	As per the MIB.

mplsLdpSessionTable

About this table

This table contains LDP session information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

This table does not contain indexes.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsLdpSessionStateLastChange (1.3.6.1.2.1.10.166.4.1.3.3.1.1)	read-only	TimeTicks	Standard MIB values.	Time when the LDP session state changed.	As per the MIB.
mplsLdpSessionState (1.3.6.1.2.1.10.166.4.1.3.3.1.2)	read-only	INTEGER	nonexistent(1), initialized(2), openrec(3), opensent(4), operational(5)	LDP session state.	As per the MIB.
mplsLdpSessionRole (1.3.6.1.2.1.10.166.4.1.3.3.1.3)	read-only	INTEGER	unknown(1), active(2), passive(3)	LDP session role.	As per the MIB.
mplsLdpSessionProtocolVersion (1.3.6.1.2.1.10.166.4.1.3.3.1.4)	read-only	Unsigned32	Unsigned32 (1..65535)	LDP session protocol version.	As per the MIB.
mplsLdpSessionKeepAliveHoldTimeRem (1.3.6.1.2.1.10.166.4.1.3.3.1.5)	read-only	INTEGER	INTEGER (0..2147483647)	Remaining keepalive time.	As per the MIB.
mplsLdpSessionKeepAliveTime (1.3.6.1.2.1.10.166.4.1.3.3.1.6)	read-only	Unsigned32	Unsigned32 (1..65535)	Keepalive interval.	As per the MIB.
mplsLdpSessionMaxPduLength (1.3.6.1.2.1.10.166.4.1.3.3.1.7)	read-only	Unsigned32	Unsigned32 (1..65535)	Maximum PDU length.	As per the MIB.
mplsLdpSessionDiscontinuityTime (1.3.6.1.2.1.10.166.4.1.3.3.1.8)	read-only	TimeTicks	Standard MIB values.	System time when a counter of the LDP session suffered a discontinuity.	As per the MIB.

mplsLdpSessionStatsTable

About this table

This table contains LDP session statistics information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

This table does not contain indexes.

Object (OID)

Access

Syntax

Value range

Description

Implementation

mplsLdpSessionStatsUnknownMesTypeErrors (1.3.6.1.2.1.10.166.4.1.3.4.1.1)

read-only

Counter32

(0..4294967295)

Number of unknown messages detected by the LSR during the session.

As per the MIB.

mplsLdpSessionStatsUnknownTlvErrors (1.3.6.1.2.1.10.166.4.1.3.4.1.2)

read-only

Counter32

(0..4294967295)

Number of unknown TLVs detected by the LSR during the session.

As per the MIB.

mplsLdpHelloAdjacencyTable

About this table

This table contains LDP hello adjacency information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

The table index is mplsLdpHelloAdjacencyIndex.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsLdpHelloAdjacencyIndex (1.3.6.1.2.1.10.166.4.1.3.5.1.1.1)	not-accessible	Unsigned32	Unsigned32 (1..4294967295)	LDP hello adjacency index.	As per the MIB.
mplsLdpHelloAdjacencyHoldTimeRem (1.3.6.1.2.1.10.166.4.1.3.5.1.1.2)	read-only	INTEGER	INTEGER (0..2147483647)	Time remaining for the hello adjacency.	As per the MIB.
mplsLdpHelloAdjacencyHoldTime (1.3.6.1.2.1.10.166.4.1.3.5.1.1.3)	read-only	Unsigned32	Unsigned32 (0..65535)	Hold time for the hello adjacency.	As per the MIB. Default: 0. The actual default value is 15 for the Link Hello mode and 45 for the Targeted Hello mode.
mplsLdpHelloAdjacencyType (1.3.6.1.2.1.10.166.4.1.3.5.1.1.4)	read-only	INTEGER	link(1), targeted(2)	LDP hello adjacency type.	As per the MIB.

mplsInSegmentLdpLspTable

About this table

This table contains LDP incoming label configuration information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

The table index is mplsInSegmentLdpLspIndex.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsInSegmentLdpLspIndex (1.3.6.1.2.1.10.166.4.1.3.6.1.1)	not-accessible	OCTET STRING	OCTET STRING (0..65535)	LDP LSP incoming label index.	0x00 is invalid.
mplsInSegmentLdpLspLabelType (1.3.6.1.2.1.10.166.4.1.3.6.1.2)	read-only	INTEGER	generic(1), atmParameters(2), frameRelayParameters(3)	LDP LSP incoming label type.	Supports only the read operation. Supports only generic.
mplsInSegmentLdpLspType (1.3.6.1.2.1.10.166.4.1.3.6.1.3)	read-only	INTEGER	unknown(1), terminatingLsp(2), originatingLsp(3), crossConnectingLsp(4)	LDP LSP type.	As per the MIB.

mplsOutSegmentLdpLspTable

About this table

This table contains LDP outgoing label table information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

The table index is mplsOutSegmentLdpLspIndex.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsOutSegmentLdpLspIndex (1.3.6.1.2.1.10.166.4.1.3.7.1.1)	not-accessible	OCTET STRING	OCTET STRING (0..65535)	LDP LSP outgoing label index.	0x00 is invalid.
mplsOutSegmentLdpLspLabelType (1.3.6.1.2.1.10.166.4.1.3.7.1.2)	read-only	INTEGER	generic(1), atmParameters(2), frameRelayParameters(3)	LDP LSP outgoing label type.	Supports only the read operation. Supports only generic.
mplsOutSegmentLdpLspType (1.3.6.1.2.1.10.166.4.1.3.7.1.3)	read-only	INTEGER	unknown(1), terminatingLsp(2), originatingLsp(3), crossConnectingLsp(4)	LDP LSP type.	As per the MIB.

mplsFecTable

About this table

This table contains LDP FEC information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

The table index is mplsFecIndex.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsFecIndex (1.3.6.1.2.1.10.166.4.1.3.8.3.1.1)	not-accessible	Unsigned32	Unsigned32 (1..4294967295)	LDP FEC index.	As per the MIB.
mplsFecType (1.3.6.1.2.1.10.166.4.1.3.8.3.1.2)	read-create	INTEGER	prefix(1), hostAddress(2)	LDP FEC type.	As per the MIB.
mplsFecAddrPrefixLength (1.3.6.1.2.1.10.166.4.1.3.8.3.1.3)	read-create	Unsigned32	Unsigned32 (0..2040)	This node will not be defined if the mplsFecType is hostAddress(2). The value for this node is 0 or the IP prefix range defined by mplsFecAddr if the mplsFecType is prefix(1). If the value for this node is 0, it means that the IP prefix matches all IP addresses.	As per the MIB.
mplsFecAddrType (1.3.6.1.2.1.10.166.4.1.3.8.3.1.4)	read-create	INTEGER	unknown(0), ipv4(1), ipv6(2), ipv4z(3), ipv6z(4), dns(16)	LDP FEC address type.	As per the MIB.
mplsFecAddr (1.3.6.1.2.1.10.166.4.1.3.8.3.1.5)	read-create	OCTET STRING	OCTET STRING (0..65535)	LDP FEC address.	As per the MIB.
mplsFecStorageType (1.3.6.1.2.1.10.166.4.1.3.8.3.1.6)	read-create	INTEGER	other(1), volatile(2), nonVolatile(3), permanent(4), readOnly(5)	LDP FEC storage type.	As per the MIB.
mplsFecRowStatus (1.3.6.1.2.1.10.166.4.1.3.8.3.1.7)	read-create	INTEGER	active(1), notInService(2), notReady(3), createAndGo(4), createAndWait(5), destroy(6)	Row status.	As per the MIB.

mplsLdpLspFecTable

About this table

This table contains the relationship between LDP LSPs and FECs.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

The table indexes are mplsLdpLspFecSegment, mplsLdpLspFecSegmentIndex, and mplsLdpLspFecIndex.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsLdpLspFecSegment (1.3.6.1.2.1.10.166.4.1.3.10.1.1)	not-accessible	INTEGER	INTEGER inSegment (1), outSegment (2)	LDP LSP label type.	If the value of this object is inSegment, mplsLdpLspFecSegmentIndex must be consistent with mplsInSegmentLdpLspIndex. If the value of this object is set to outSegment, mplsLdpLspFecSegmentIndex must be consistent with mplsOutSegmentLdpLspIndex.
mplsLdpLspFecSegmentIndex (1.3.6.1.2.1.10.166.4.1.3.10.1.2)	not-accessible	OCTET STRING	OCTET STRING (0..65535)	LDP LSP label index.	0x00 is invalid.
mplsLdpLspFecIndex (1.3.6.1.2.1.10.166.4.1.3.10.1.3)	not-accessible	Unsigned32	Unsigned32 (1..4294967295)	LDP FEC index.	As per the MIB.
mplsLdpLspFecStorageType (1.3.6.1.2.1.10.166.4.1.3.10.1.4)	read-create	INTEGER	other(1), volatile(2), nonVolatile(3), permanent(4), readOnly(5)	LDP FEC storage type.	Supports only the read operation. The value of this object is fixed at volatile.
mplsLdpLspFecRowStatus (1.3.6.1.2.1.10.166.4.1.3.10.1.5)	read-create	INTEGER	active(1), notInService(2), notReady(3), createAndGo(4), createAndWait(5), destroy(6)	Row status.	Supports only the read operation. The row status is fixed at active(1).

mplsLdpSessionPeerAddrTable

About this table

This table contains LDP session peer address information.

Support for operations

Create：Not supported

Edit/Modify：Not supported

Delete：Not supported

Read：Supported

Columns

The table index is mplsLdpSessionPeerAddrIndex.

Object (OID)	Access	Syntax	Value range	Description	Implementation
mplsLdpSessionPeerAddrIndex (1.3.6.1.2.1.10.166.4.1.3.11.1.1)	not-accessible	Unsigned32	Unsigned32 (1..4294967295)	Peer address index.	As per the MIB.
mplsLdpSessionPeerNextHopAddrType (1.3.6.1.2.1.10.166.4.1.3.11.1.2)	read-only	INTEGER	unknown(0), ipv4(1), ipv6(2), ipv4z(3), ipv6z(4), dns(16)	Next hop address type.	As per the MIB.
mplsLdpSessionPeerNextHopAddr (1.3.6.1.2.1.10.166.4.1.3.11.1.3)	read-only	OCTET STRING	OCTET STRING (0..65535)	Next hop address.	As per the MIB.

Notifications

mplsLdpInitSessionThresholdExceeded

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.2.1.10.166.4.0.1	The number of session initialization messages exceeds the limit.	Error	Major	N/A (N/A)	ON

Notification triggers

Wrong LDP session parameter configuration will cause LDP to send initialization messages multiple times. This notification is generated when the number of session initialization messages exceeds the value (not 0) of the mplsLdpEntityInitSessionThreshold object.

System impact

All services based on this LDP session will be interrupted.

Status control

CLI: Use the snmp-agent trap enable ldp command.

OFF

CLI: Use the undo snmp-agent trap enable ldp command.

Object

OID (object name)

Description

Index

Type

Value range

1.3.6.1.2.1.10.166.4.1.2.3.1.11 (mplsLdpEntityInitSessionThreshold)

During the session establishment with an LDP peer, if the number of session initialization messages sent by the LDP entity exceeds the maximum value defined by the mplsLdpInitSessionThresholdExceeded object, the LDP entity will send notifications.

1.3.6.1.2.1.10.166.4.1.2.3.1.1

(mplsLdpEntityLdpId)

1.3.6.1.2.1.10.166.4.1.2.3.1.2

(mplsLdpEntityIndex)

Integer32

0..100

Recommended action

To resolve this issue:

1.Check the configuration for LDP session parameters:

- Verify that the keepalive hold time is not 0 on the remote device. Value 0 is not valid. Use a non-zero value for this parameter.

- Verify that the label advertisement mode is not Downstream On Demand (DoD) on the remote device. H3C does not support the DoD mode. Set the label advertisement mode to Downstream Unsolicited (DU) on the remote device.

- Check the loop detection configuration on the remote device. If loop detection is enabled, the PV limit cannot be 0. If loop detection is disabled, the PV limit must be 0.

2.If the issue persists, contact H3C Support.

mplsLdpSessionUp

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.2.1.10.166.4.0.3	The session state changes to operational.	Recovery	Major	N/A (N/A)	ON

Notification triggers

This notification is generated when the value of the mplsLdpSessionState object changes to operational(5). This value indicates that the LDP session is established successfully.

System impact

No negative impact on services.

Status control

CLI: Use the snmp-agent trap enable ldp command.

OFF

CLI: Use the undo snmp-agent trap enable ldp command.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.10.166.4.1.3.3.1.2 (mplsLdpSessionState)	LDP session state.	1.3.6.1.2.1.10.166.4.1.2.3.1.1 (mplsLdpEntityLdpId) 1.3.6.1.2.1.10.166.4.1.2.3.1.2 (mplsLdpEntityIndex) 1.3.6.1.2.1.10.166.4.1.3.2.1.1 (mplsLdpPeerLdpId)	INTEGER	nonexistent(1) , initialized(2) , openrec(3) , opensent(4) , operational(5))
1.3.6.1.2.1.10.166.4.1.3.3.1.8 (mplsLdpSessionDiscontinuityTime)	Time when the LDP session is up.	1.3.6.1.2.1.10.166.4.1.2.3.1.1 (mplsLdpEntityLdpId) 1.3.6.1.2.1.10.166.4.1.2.3.1.2 (mplsLdpEntityIndex) 1.3.6.1.2.1.10.166.4.1.3.2.1.1 (mplsLdpPeerLdpId)	Timeticks	Standard MIB values.
1.3.6.1.2.1.10.166.4.1.3.4.1.1 (mplsLdpSessionStatsUnknownMesTypeErrors)	Number of unknown messages detected by the LSR during the session.	1.3.6.1.2.1.10.166.4.1.2.3.1.1 (mplsLdpEntityLdpId) 1.3.6.1.2.1.10.166.4.1.2.3.1.2 (mplsLdpEntityIndex) 1.3.6.1.2.1.10.166.4.1.3.2.1.1 (mplsLdpPeerLdpId)	Counter32	Standard MIB values.
1.3.6.1.2.1.10.166.4.1.3.4.1.2 (mplsLdpSessionStatsUnknownTlvErrors)	Number of unknown TLVs detected by the LSR during the session.	1.3.6.1.2.1.10.166.4.1.2.3.1.1 (mplsLdpEntityLdpId) 1.3.6.1.2.1.10.166.4.1.2.3.1.2 (mplsLdpEntityIndex) 1.3.6.1.2.1.10.166.4.1.3.2.1.1 (mplsLdpPeerLdpId)	Counter32	Standard MIB values.

Recommended action

No action is required.

mplsLdpSessionDown

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.2.1.10.166.4.0.4	The session state is not operational.	Error	Major	1.3.6.1.2.1.10.166.4.0.3 (mplsLdpSessionUp)	ON

Notification triggers

This notification is generated when the value of the mplsLdpSessionState object is not operational.

Possible reasons for the down state of a session include:

interface not operational.

MPLS disabled on interface.

LDP disabled on interface.

LDP auto-configure disabled on interface.

VPN instance changed on interface.

LDP instance deleted.

targeted peer deleted.

L2VPN disabled targeted peer.

TE tunnel disabled targeted peer.

session protection disabled targeted peer.

OSPF Remote LFA disabled targeted peer.

IS-IS Remote LFA disabled targeted peer

process deactivated.

failed to receive the initialization message.

graceful restart reconnect timer expired.

failed to recover adjacency by NSR.

failed to upgrade session by NSR.

closed the GR session.

keepalive hold timer expired.

hello hold timer expired.

session reset.

TCP connection down.

received a fatal notification message.

internal error.

memory in critical state.

transport address changed on interface.

MD5 password changed

Auto targeted peer deleted

Modify LDP local LSR ID

LDP process stopped

System impact

All services based on the LDP session will be interrupted.

Status control

CLI: Use the snmp-agent trap enable ldp command.

OFF

CLI: Use the undo snmp-agent trap enable ldp command.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.10.166.4.1.3.3.1.2 (mplsLdpSessionState)	Session state.	mplsLdpEntityLdpId mplsLdpEntityIndex mplsLdpPeerLdpId	INTEGER	nonexistent(1) , initialized(2) , openrec(3) , opensent(4) , operational(5))
1.3.6.1.2.1.10.166.4.1.3.3.1.8 (mplsLdpSessionDiscontinuityTime)	System time when a counter of the LDP session suffered a discontinuity.	mplsLdpEntityLdpId mplsLdpEntityIndex mplsLdpPeerLdpId	Timeticks	Standard MIB values.
1.3.6.1.2.1.10.166.4.1.3.4.1.1 (mplsLdpSessionStatsUnknownMesTypeErrors)	Number of unknown messages detected by the LSR during the session.	mplsLdpEntityLdpId mplsLdpEntityIndex mplsLdpPeerLdpId	Counter32	Standard MIB values.
1.3.6.1.2.1.10.166.4.1.3.4.1.2 (mplsLdpSessionStatsUnknownTlvErrors)	Number of unknown TLVs detected by the LSR during the session.	mplsLdpEntityLdpId mplsLdpEntityIndex mplsLdpPeerLdpId	Counter32	Standard MIB values.

Recommended action

To resolve this issue:

Take proper actions according to the reason displayed for the session down state. Table 1 shows the recommended actions.

Reasons for session down and the solutions

Reason for session down

Solution

interface not operational

Verify that the link state of the interface is normal and the interface has a correct IPv4 or IPv6 address configured.

MPLS disabled on interface

Use the mpls enable command to enable MPLS on the interface in interface view.

LDP disabled on interface

Use the mpls ldp enable command to enable LDP on the interface in interface view.

VPN instance changed on interface

Use the ip binding vpn-instance command in interface view to edit the interface and VPN instance association.

LDP instance deleted

Use the vpn-instance command in LDP view to recover the LDP capability of the specified VPN instance.

targeted peer deleted

Use the target-peer command in LDP view to reconfigure the targeted peer.

L2VPN disabled targeted peer

See the action for the pwDeleted notification node.

TE tunnel disabled targeted peer

Use the display interface tunnel command to view the TE tunnel interface state. If the state is not Up, see the mplsTunnelDown notification node for the recommended action.

Use the display mpls ldp interface command to view the MPLS and LDP configuration on the interface. If the configuration does not exist, execute the mpls enable and mpls ldp enable commands in interface view.

session protection disabled targeted peer

Use the session protection command in LDP view to recover the session protection configuration.

OSPF Remote LFA disabled targeted peer

OSPF calculated that the PQ node address of the remote LFA has changed, so it deleted the corresponding targeted peer. This is a normal operation when the network topology changes and no action is required.

IS-IS Remote LFA disabled targeted peer

IS-IS calculated that the PQ node address of the remote LFA has changed, so it deleted the corresponding targeted peer. This is a normal operation when the network topology changes and no action is required.

process deactivated

The process is waiting for automatic session recovery to be performed after the LDP process is upgraded.

As a best practice, execute the non-stop-routing command in LDP view to enable NSR to reduce the impact of process upgrading.

failed to receive the initialization message

Execute the ping -a local-address -c count (more than 100) destination-address command to test the link status. If packet loss occurs, collect alarm information and configuration data, and then contact the technical support for help.

The local-address and destination-address are the LSR ID of the local device and destination device, respectively.

To view the LSR ID of a device, execute the display mpls ldp parameter command on the device.

graceful restart reconnect timer expired

The local-address and destination-address are the LSR ID of the local device and destination device, respectively.

To view the LSR ID of a device, execute the display mpls ldp parameter command on the device.

failed to recover adjacency by NSR

Execute the display ha service-group ldp command. If the value of the State field is Realtime Backup, it indicates that the data backup has completed. Make sure the state is Realtime Backup and then perform a primary/backup switchover.

failed to upgrade session by NSR

closed the GR session

The local-address and destination-address are the LSR ID of the local device and destination device, respectively.

To view the LSR ID of a device, execute the display mpls ldp parameter command on the device.

keepalive hold timer expired

The local-address and destination-address are the LSR ID of the local device and destination device, respectively.

To view the LSR ID of a device, execute the display mpls ldp parameter command on the device.

hello hold timer expired

Make sure the link is stable, for example, by changing the link or troubleshooting link faults.

session reset

The session is reset manually and will be reestablished automatically. No action is required.

TCP connection down

received a fatal notification message

Identify the specific error information in the message and then take actions accordingly.

internal error

LDP internal error. Collect alarm information and configuration data, and then contact Technical Support for help.

memory in critical state

Memory has a level-3 alarm. Collect alarm information and configuration data, and then contact Technical Support for help.

transport address changed on interface

Use the mpls ldp transport-address command in interface view to reconfigure the interface's LDP transport address.

MD5 password changed

Use the display this command in LDP view to view the value for the md5-authentication field. Make sure the two ends of the session have the same MD5 authentication password configured.

Auto targeted peer deleted

Use the display this command in LDP view to view the accept target-hello configuration:

If the accept target-hello configuration does not exist, check whether it is deleted mistakenly.

If the configuration is accept target-hello prefix-list prefix-list-name, use the display ip prefix-list name prefix-list-name command to check whether this IP prefix list permits the remote LSR ID. Edit the IP prefix list if needed to make sure it permits the remote LSR ID.

If the issue persists, collect alarm information and configuration data, and then contact Technical Support for help.

Modify LDP local LSR ID

This operation will cause the session to go down, which is a normal process. Wait for the session to come up again.

LDP process stopped

Execute the display current-configuration configuration ldp command to view the LDP configuration. If LDP configuration exists in the output, the LDP process is stopped abnormally. In this case, collect alarm information and configuration data, and then contact Technical Support for help. If the LDP configuration does not exist, check whether it is deleted mistakenly.

The following information indicates that LDP configuration exists:

<Sysname> display current-configuration configuration ldp

mpls ldp

return

The following information indicates that LDP configuration does not exist:

<Sysname> display current-configuration configuration ldp

return

11-MPLS

About this table

Support for operations

Columns

About this table

Support for operations

Columns

About this table

Support for operations

Columns

About this table

Support for operations

Columns

About this table

Support for operations

Columns

About this table

Support for operations

Columns

About this table

Support for operations

Columns

About this table

Support for operations

Columns

About this table

Support for operations

Columns

About this table

Support for operations

Columns

About this table

Support for operations

Columns

Basic information

Notification triggers

System impact

Status control

Object

Recommended action

Basic information

Notification triggers

System impact

Status control

Object

Recommended action

Basic information

Notification triggers

System impact

Status control

Object

Recommended action

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