Connectivity Fault Management (CFM) is the name of the feature defined in IEEE 802.1ag for end-to-end Operations, Administration and Maintenance (OAM) for Ethernet. In the Comware platform, the feature is called Connectivity Fault Detection (CFD).

CFD is an end-to-end per-VLAN link layer OAM mechanism. CFD is used for link connectivity detection, fault verification, and fault location.

This MIB defines how to implement CFD. Use this MIB to configure CFD on managed devices.

MIB file name

ieee8021-cfm.mib

Root object

iso(1).org(3).ieee(111).standards-association-numbered-series-standards(2).lan-man-stds(802).ieee802dot1(1).ieee802dot1mibs(1).ieee8021CfmMib(8)

Scalar objects

dot1agCfmMdTableNextIndex (1.3.111.2.802.1.1.8.1.5.1)

Object (OID)	Access	Syntax	Value range	Description	Implementation
dot1agCfmMdTableNextIndex (1.3.111.2.802.1.1.8.1.5.1)	read-only	Dot1afCfmIndexIntegerNextFree	Unsigned32 (1..4294967295)	Value to be used as a new index in the MD table.	As per the MIB.

Tabular objects

dot1agCfmMdTable

About this table

Use this table to obtain the MD information.

Support for operations

Create：The dot1agCfmMdIndex index must be configured. The index is provided by the dot1agCfmMdTableNextIndex object.

The dot1agCfmMdMdLevel object must be configured.

The dot1agCfmMdFormat object is optional. If it is not configured, the default value is charString(4).

The dot1agCfmMdName object is optional. When the dot1agCfmMdFormat object is set to none(1), the MIB will automatically ignore the input value no matter whether the dot1agCfmMdName object is configured. When the dot1agCfmMdFormat object is set to any other value, you must configure the dot1agCfmMdName object, and the MIB will read the input value.

The dot1agCfmMdMhfCreation object is optional. If it is not configured, the default value is defMHFnone(1), and only the value is available.

The dot1agCfmMdMhfIdPermission object is optional. If it is not configured, the default value is sendIdNone(1), and only the value is available.

Edit/Modify：Not supported

Delete：Supported

Read：Supported

Columns

The table index is dot1agCfmMdIndex.

Object (OID)	Access	Syntax	Value range	Description	Implementation
dot1agCfmMdIndex (1.3.111.2.802.1.1.8.1.5.2.1.1)	not-accessible	Unsigned32	Unsigned32(1..4294967295)	MD table index.	As per the MIB.
dot1agCfmMdFormat (1.3.111.2.802.1.1.8.1.5.2.1.2)	read-create	Dot1agCfmMaintDomainNameType	INTEGER { none (1) dnsLikeName(2) macAddressAndUint (3) charString (4) }	MD name type.	As per the MIB.
dot1agCfmMdName (1.3.111.2.802.1.1.8.1.5.2.1.3)	read-create	Dot1agCfmMaintDomainName	OCTET STRING(1..43)	MD name.	The MD name must be unique. After an MD is created, its name cannot be modified. When the format is set to macAddressAndUint(3), you must enter eight bytes, where the first fix bytes specify the MAC address and the last two bytes specify the subnumber.
dot1agCfmMdMdLevel (1.3.111.2.802.1.1.8.1.5.2.1.4)	read-create	Dot1agCfmMDLevel	Integer32 (0..7)	MD level.	Eight MD levels are available, 0 to 7. The MD level cannot be modified after an MD is created.
dot1agCfmMdMhfCreation (1.3.111.2.802.1.1.8.1.5.2.1.5)	read-create	Dot1agCfmMhfCreation	INTEGER { defMHFnone(1), defMHFdefault(2), defMHFexplicit(3) }	Enumerated value indicating whether the management entity can create MHFs (MIP Half Function) for this MD.	This object is insignificant. This object cannot be modified after an MD is created. The default is defMHFnone(1), and only the value is supported.
dot1agCfmMdMhfIdPermission (1.3.111.2.802.1.1.8.1.5.2.1.6)	read-create	Dot1agCfmIdPermission	INTEGER { sendIdNone(1), sendIdChassis(2), sendIdManage(3), sendIdChassisManage(4) }	Enumerated value indicating what, if anything, is to be included in the Sender ID TLV (21.5.3) transmitted by MPs configured in this MD.	The default value is sendIdNone(1), and only the value is available.
dot1agCfmMdMaNextIndex (1.3.111.2.802.1.1.8.1.5.2.1.7)	read-only	Dot1afCfmIndexIntegerNextFree,	Unsigned32 (1..4294967295)	Index of the next MA to be created.	As per the MIB.
dot1agCfmMdRowStatus (1.3.111.2.802.1.1.8.1.5.2.1.8)	read-create	RowStatus	active(1), notInService(2), notReady(3), createAndGo(4), createAndWait(5), destroy(6)	Row status.	Available values are active(1), createAndGo(4), and destroy(6).

dot1agCfmMaNetTable

About this table

Use this table to obtain the MA network information.

Support for operations

Create：The dot1agCfmMdIndex must be configured. The index is provided by dot1agCfmMdIndex in the dot1agCfmMdTable object.

The dot1agCfmMaIndex and dot1agCfmMaNetName indexes are required. When configuring the dot1agCfmMaIndex index, the index is provided by the dot1agCfmMdMaNextIndex in the dot1agCfmMdTable table. When you use the dot1agCfmMaNetName object to configure a name, the name can contain only digits, letters, and underscores (_).

The dot1agCfmMaNetFormat object must be configured.

The dot1agCfmMaNetCcmInterval object is optional. If it is not configured, the default value is interval1s (4).

Edit/Modify：Only the dot1agCfmMaNetCcmInterval object value can be modified.

The values of the other objects cannot be modified. To modify them, first delete this row, and then create a new one.

Delete：Supported

Read：Supported

Columns

The table indexes are dot1agCfmMdIndex and dot1agCfmMaIndex.

Object (OID)	Access	Syntax	Value range	Description	Implementation
dot1agCfmMaIndex (1.3.111.2.802.1.1.8.1.6.1.1.1)	not-accessible	Unsigned32	Unsigned32(1..4294967295)	MA index.	This object cannot be modified after being created.
dot1agCfmMaNetFormat (1.3.111.2.802.1.1.8.1.6.1.1.2)	read-create	Dot1agCfmMaintAssocNameType	INTEGER { primaryVid (1), charString (2), unsignedInt16 (3), iccFormat (32) }	MA name format.	This object cannot be modified after being created.
dot1agCfmMaNetName (1.3.111.2.802.1.1.8.1.6.1.1.3)	read-create	Dot1agCfmMaintAssocName	OCTET STRING (1..45)	MA name.	This object cannot be modified after being created. The total length of the MA name and its MD name cannot exceed 44 bytes.
dot1agCfmMaNetCcmInterval (1.3.111.2.802.1.1.8.1.6.1.1.4)	read-create	Dot1agCfmCcmInterval	INTEGER { intervalInvalid (0), interval300Hz (1), interval10ms (2), interval100ms (3), interval1s (4), interval10s (5), interval1min (6), interval10min (7) }	CCM transmission interval.	As per the MIB.
dot1agCfmMaNetRowStatus (1.3.111.2.802.1.1.8.1.6.1.1.5)	read-create	RowStatus	active(1), notInService(2), notReady(3), createAndGo(4), createAndWait(5), destroy(6)	Row status.	Available values are active(1), createAndGo(4), and destroy(6).

dot1agCfmMaMepListTable

About this table

Use this table to obtain the MA network information.

Support for operations

Create：The dot1agCfmMdIndex must be configured. The index is provided by the dot1agCfmMdIndex in the dot1agCfmMdTable object.

The dot1agCfmMaIndex must be configured. The index is provided by the dot1agCfmMaIndex in the dot1agCfmMaNetTable object.

The dot1agCfmMaMepListIdentifier object must be configured.

Edit/Modify：Not supported

Delete：Supported

Read：Supported

Columns

The table indexes are dot1agCfmMdIndex, dot1agCfmMaIndex, and dot1agCfmMaMepListIdentifier.

Object (OID)

Access

Syntax

Value range

Description

Implementation

dot1agCfmMaMepListIdentifier (1.3.111.2.802.1.1.8.1.6.3.1.1)

not-accessible

Dot1agCfmMepId

Unsigned32 (1..8191)

MEP ID.

This object cannot be modified after being created.

dot1agCfmMaMepListRowStatus (1.3.111.2.802.1.1.8.1.6.3.1.2)

read-create

RowStatus

active(1),

notInService(2),

notReady(3),

createAndGo(4),

createAndWait(5),

destroy(6)

Row status.

Available values are active(1), createAndGo(4), and destroy(6).

dot1agCfmMepTable

About this table

Use this table to obtain the MEP information.

Support for operations

Create：The dot1agCfmMdIndex must be configured. The index is provided by the dot1agCfmMdIndex in the dot1agCfmMdTable object.

The dot1agCfmMaIndex must be configured. The index is provided by the dot1dot1agCfmMaIndex in the dot1agCfmMaNetTable object.

Indexes dot1agCfmMepIdentifier and dot1agCfmMepIfIndex and non-index dot1agCfmMepDirection must be configured.

Edit/Modify：The dot1agCfmMepActive and dot1agCfmMepCciEnabled object values can be modified.

The values of the other objects cannot be modified. To modify them, first delete this row, and then create a new one.

Delete：Supported

Read：Supported

Columns

The table indexes are dot1agCfmMdIndex, dot1agCfmMaIndex, and dot1agCfmMepIdentifier.

Object (OID)	Access	Syntax	Value range	Description	Implementation
dot1agCfmMepIdentifier (1.3.111.2.802.1.1.8.1.7.1.1.1)	not-accessible	Dot1agCfmMepId	Unsigned32 (1..8191)	MEP ID.	This object cannot be modified after being created.
dot1agCfmMepIfIndex (1.3.111.2.802.1.1.8.1.7.1.1.2)	read-create	InterfaceIndexOrZero	Integer32 (0..2147483647)	Interface index of an MEP.	As per the MIB.
dot1agCfmMepDirection (1.3.111.2.802.1.1.8.1.7.1.1.3)	read-create	Dot1agCfmMpDirection	INTEGER { down (1), up (2) }	MEP direction.	This object cannot be modified after being created.
dot1agCfmMepPrimaryVid (1.3.111.2.802.1.1.8.1.7.1.1.4)	read-create	Unsigned32	Unsigned32(0..16777215)	VLAN of the MEP.	The value 0 indicates that either the primary VID is that of the MEP's MA, or that the MEP's MA is associated with no VID.
dot1agCfmMepActive (1.3.111.2.802.1.1.8.1.7.1.1.5)	read-create	TruthValue	true(1), false(2)	Enabling state of the MEP.	The value must be true (1), and cannot be modified once the MEP is created.
dot1agCfmMepFngState (1.3.111.2.802.1.1.8.1.7.1.1.6)	read-only	Dot1agCfmFngState	INTEGER { fngReset (1), fngDefect (2), fngReportDefect (3), fngDefectReported(4), fngDefectClearing(5) }	FNG state machine state of the MEP.	As per the MIB.
dot1agCfmMepCciEnabled (1.3.111.2.802.1.1.8.1.7.1.1.7)	read-create	TruthValue	true(1), false(2)	Whether to enable the MEP to send CCM packets.	As per the MIB.
dot1agCfmMepCcmLtmPriority (1.3.111.2.802.1.1.8.1.7.1.1.8)	read-create	Unsigned32	Unsigned32(0..7)	Priority of CCM packets sent by the MEP.	Not supported
dot1agCfmMepMacAddress (1.3.111.2.802.1.1.8.1.7.1.1.9)	read-only	MacAddress	OCTET STRING(6)	MEP MAC address.	Not supported
dot1agCfmMepLowPrDef (1.3.111.2.802.1.1.8.1.7.1.1.10)	read-create	Dot1agCfmLowestAlarmPri	INTEGER { allDef (1), macRemErrXcon(2), remErrXcon (3), errXcon (4), xcon (5), noXcon (6) }	Lowest priority defect that is allowed to generate fault alarms.	Not supported
dot1agCfmMepFngAlarmTime (1.3.111.2.802.1.1.8.1.7.1.1.11)	read-create	TimeInterval	250..1000	The time that defects must be present before a fault alarm is issued.	Not supported
dot1agCfmMepFngResetTime (1.3.111.2.802.1.1.8.1.7.1.1.12)	read-create	TimeInterval	250..1000	The time that defects must be absent before resetting a fault alarm.	Not supported
dot1agCfmMepHighestPrDefect (1.3.111.2.802.1.1.8.1.7.1.1.13)	read-only	Dot1agCfmHighestDefectPri	INTEGER { none (0), defRDICCM (1), defMACstatus (2), defRemoteCCM (3), defErrorCCM (4), defXconCCM (5) }	Highest-priority fault of the MEP.	In the current software version, only fault types defRemoteCCM(3), defErrorCCM(4), and defXconCCM (5) are supported.
dot1agCfmMepDefects (1.3.111.2.802.1.1.8.1.7.1.1.14)	read-only	Dot1agCfmMepDefects	BITS { bDefRDICCM(0), bDefMACstatus(1), bDefRemoteCCM(2), bDefErrorCCM(3), bDefXconCCM(4) }	MEP fault state.	Not supported
dot1agCfmMepErrorCcmLastFailure (1.3.111.2.802.1.1.8.1.7.1.1.15)	read-only	OCTET STRING	OCTET STRING (1..1522)	Last-received CCM packet that triggered a DefError CCM fault.	Not supported
dot1agCfmMepXconCcmLastFailure (1.3.111.2.802.1.1.8.1.7.1.1.16)	read-only	OCTET STRING	OCTET STRING (1..1522)	Last-received CCM packet that triggered a DefXcon CCM fault.	Not supported
dot1agCfmMepCcmSequenceErrors (1.3.111.2.802.1.1.8.1.7.1.1.17)	read-only	Counter32	Standard MIB values.	Total number of out-of-sequence CCM packets received.	Not supported
dot1agCfmMepCciSentCcms (1.3.111.2.802.1.1.8.1.7.1.1.18)	read-only	Counter32	Standard MIB values.	Total number of CCM packets sent.	Not supported
dot1agCfmMepNextLbmTransId (1.3.111.2.802.1.1.8.1.7.1.1.19)	read-only	Unsigned32	Standard MIB values.	Next sequence number.	Not supported
dot1agCfmMepLbrIn (1.3.111.2.802.1.1.8.1.7.1.1.20)	read-only	Counter32	Standard MIB values.	Total number of LBR packets received.	Not supported
dot1agCfmMepLbrInOutOfOrder (1.3.111.2.802.1.1.8.1.7.1.1.21)	read-only	Counter32	Standard MIB values.	Total number of out-of-sequence LBR packets received.	Not supported
dot1agCfmMepLbrBadMsdu (1.3.111.2.802.1.1.8.1.7.1.1.22)	read-only	Counter32	Standard MIB values.	Total number of bad LBR packets.	Not supported
dot1agCfmMepLtmNextSeqNumber (1.3.111.2.802.1.1.8.1.7.1.1.23)	read-only	Unsigned32	Standard MIB values.	Next sequence number of the LT packet.	Not supported
dot1agCfmMepUnexpLtrIn (1.3.111.2.802.1.1.8.1.7.1.1.24)	read-only	Counter32	Standard MIB values.	Total number of LTR packets	Not supported
dot1agCfmMepLbrOut (1.3.111.2.802.1.1.8.1.7.1.1.25)	read-only	Counter32	Standard MIB values.	Total number of LBR packets sent.	Not supported
dot1agCfmMepTransmitLbmStatus (1.3.111.2.802.1.1.8.1.7.1.1.26)	read-create	TruthValue	true(1), false(2)	Whether to forward LBM packets.	Not supported
dot1agCfmMepTransmitLbmDestMacAddress (1.3.111.2.802.1.1.8.1.7.1.1.27)	read-create	MacAddress	OCTET STRING(6)	Destination MAC address of LBM packets.	Not supported
dot1agCfmMepTransmitLbmDestMepId (1.3.111.2.802.1.1.8.1.7.1.1.28)	read-create	Dot1agCfmMepIdOrZero	Integer32 (0..2147483647)	MEP ID.	Not supported
dot1agCfmMepTransmitLbmDestIsMepId (1.3.111.2.802.1.1.8.1.7.1.1.29)	read-create	TruthValue	true(1), false(2)	Whether the LBM packets are transmitted by using the MEP ID or destination MAC address.	Not supported
dot1agCfmMepTransmitLbmMessages (1.3.111.2.802.1.1.8.1.7.1.1.30)	read-create	Integer32	Integer32(1..1024)	Total number of LBM packets sent.	Not supported
dot1agCfmMepTransmitLbmDataTlv (1.3.111.2.802.1.1.8.1.7.1.1.31)	read-create	OCTET STRING	OCTET STRING (0..1500)	Data in TLVs.	Not supported
dot1agCfmMepTransmitLbmVlanPriority (1.3.111.2.802.1.1.8.1.7.1.1.32)	read-create	Integer32	OCTET STRING (0..7)	Priority.	Not supported
dot1agCfmMepTransmitLbmVlanDropEnable (1.3.111.2.802.1.1.8.1.7.1.1.33)	read-create	TruthValue	true(1), false(2)	Whether to enable dropping packets.	Not supported
dot1agCfmMepTransmitLbmResultOK (1.3.111.2.802.1.1.8.1.7.1.1.34)	read-only	TruthValue	true(1), false(2)	Whether to send LBM packets.	Not supported
dot1agCfmMepTransmitLbmSeqNumber (1.3.111.2.802.1.1.8.1.7.1.1.35)	read-only	Unsigned32	Standard MIB values.	ID of the first LBM packet sent.	Not supported
dot1agCfmMepTransmitLtmStatus (1.3.111.2.802.1.1.8.1.7.1.1.36)	read-create	TruthValue	true(1), false(2)	Whether to send the next LTM packet.	Not supported
dot1agCfmMepTransmitLtmFlags (1.3.111.2.802.1.1.8.1.7.1.1.37)	read-create	BITS	useFDBonly (0)	Flag field in LTM packets.	Not supported
dot1agCfmMepTransmitLtmTargetMacAddress (1.3.111.2.802.1.1.8.1.7.1.1.38)	read-create	MacAddress	OCTET STRING(6)	Destination MAC address.	Not supported
dot1agCfmMepTransmitLtmTargetMepId (1.3.111.2.802.1.1.8.1.7.1.1.39)	read-create	Dot1agCfmMepIdOrZero	Integer32 (0..2147483647)	Whether the sent packets carry the destination MAC address.	Not supported
dot1agCfmMepTransmitLtmTargetIsMepId (1.3.111.2.802.1.1.8.1.7.1.1.40)	read-create	TruthValue	true(1), false(2)	Whether the LTM packets use the MEP ID.	Not supported
dot1agCfmMepTransmitLtmTtl (1.3.111.2.802.1.1.8.1.7.1.1.41)	read-create	Unsigned32	Unsigned32(0..255)	TTL	Not supported
dot1agCfmMepTransmitLtmResult (1.3.111.2.802.1.1.8.1.7.1.1.42)	read-only	TruthValue	true(1), false(2)	Whether to send LTM packets.	Not supported
dot1agCfmMepTransmitLtmSeqNumber (1.3.111.2.802.1.1.8.1.7.1.1.43)	read-only	Unsigned32	Standard MIB values.	LTM transaction identifier of the LTM sent.	Not supported
dot1agCfmMepTransmitLtmEgressIdentifier (1.3.111.2.802.1.1.8.1.7.1.1.44)	read-create	OCTET STRING	OCTET STRING(8)	ID of the egress of the LTM packets.	Not supported
dot1agCfmMepRowStatus (1.3.111.2.802.1.1.8.1.7.1.1.45)	read-create	RowStatus	active(1), notInService(2), notReady(3), createAndGo(4), createAndWait(5), destroy(6)	Row status.	Available values are active(1), createAndGo(4), and destroy(6).
dot1agCfmMepPbbTeCanReportPbbTePresence (1.3.111.2.802.1.1.8.1.7.1.1.46)	read-create	TruthValue	true(1), false(2)	Whether the PBB-TE reporting capability is supported.	Not supported
dot1agCfmMepPbbTeTrafficMismatchDefect (1.3.111.2.802.1.1.8.1.7.1.1.47)	read-only	TruthValue	true(1), false(2)	Whether traffic mismatch errors have been detected.	Not supported
dot1agCfmMepPbbTransmitLbmLtmReverseVid (1.3.111.2.802.1.1.8.1.7.1.1.48)	read-create	IEEE8021VlanIndex	Unsigned32 (1..4094\|4096..4294967295)	PBB VID carried in LTM packets.	Not supported
dot1agCfmMepPbbTeMismatchAlarm (1.3.111.2.802.1.1.8.1.7.1.1.49)	read-create	TruthValue	true(1), false(2)	Whether PBB-TE errors or PBB-TE alarms are detected.	Not supported
dot1agCfmMepPbbTeLocalMismatchDefect (1.3.111.2.802.1.1.8.1.7.1.1.50)	read-only	TruthValue	true(1), false(2)	Whether local PBB-TE errors have been detected.	Not supported
dot1agCfmMepPbbTeLocalMismatchSinceReset (1.3.111.2.802.1.1.8.1.7.1.1.51)	read-only	TruthValue	true(1), false(2)	Whether the local PBB-TE errors start from the reset state.	Not supported

Notifications

dot1agCfmFaultAlarm

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.111.2.802.1.1.8.0.1	A MEP error occurs.	Informational	Warning	N/A (N/A)	ON

Notification triggers

This notification is sent when the MEP continuously fails.

Possible causes might include the following:

The CFD entities at the two ends have inconsistent MDs or MAs.

The CFD entities at the two ends have inconsistent CCM intervals.

The MEP ID in CCMs is not in the MEP ID on the local end.

No CCM is received upon expiration of the specified timer.

System impact

Continuity check cannot be performed. Service traffic switchover or interruption might occur.

Status control

This notification cannot be disabled.

Object

OID (object name)	Description	Index	Type	Value range
1.3.111.2.802.1.1.8.1.5.2.1.1 (dot1agCfmMdIndex)	MD index.	dot1agCfmMdIndex	Integer32	1.. 4294967295
1.3.111.2.802.1.1.8.1.6.1.1.1 (dot1agCfmMaIndex)	MA index.	dot1agCfmMaIndex	Integer32	1.. 4294967295
1.3.111.2.802.1.1.8.1.7.1.1.1 (dot1agCfmMepIdentifier)	MEP ID and ultimate index in the MEP list	dot1agCfmMdIndex dot1agCfmMaIndex dot1agCfmMepIdentifier	Integer32	1.. 8191
1.3.111.2.802.1.1.8.1.7.1.1.13 (dot1agCfmMepHighestPrDefect)	Detected faulty MEP.	dot1agCfmMdIndex dot1agCfmMaIndex dot1agCfmMepIdentifier	Dot1agCfmHighestDefectPri	none (0), defRemoteCCM (3), defErrorCCM (4), defXconCCM (5)

Recommended action

To resolve this issue:

1.Identify whether the CFD configuration is correct.

2.Identify whether the port and link states are normal.

3.If the issue persists, collect alarm information and configuration data, and then contact H3C Support for help.

06-Layer 2 - LAN Switching

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About this table

Support for operations

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About this table

Support for operations

Columns

About this table

Support for operations

Columns

Basic information

Notification triggers

System impact

Status control

Object

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