Fore-TIMING-MIB

All MIBs › Fore-TIMING-MIB

Organization: FORE

Last Updated: 1999-11-05

Category: ATM, Domain: WAN/TDM, Technology: Time Synchronization, Vendor: Fore Systems (ATM)

Description: Fore Systems timing MIB providing clock source selection and synchronization configuration for network timing on ForeRunner ATM switches.

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What Is Fore-TIMING-MIB?

Fore-TIMING-MIB is a FORE Systems proprietary MIB governing clock source selection and network timing synchronization on ForeRunner ATM switches, centered on the Timing and Clock Module (TCM) hardware. It exposes hardware identification (type, version), PLL lock status, overall operation status, and the currently selected timing reference, along with requested versus operating timing modes and mode failover behavior. This is squarely a hardware-status monitoring MIB: administrators watch tcmPllStatus and tcmOperationStatus to detect a failed or unlocked timing module, and tcmCurrentTimingRef/tcmModeFailover to see whether the switch has failed over to a backup clock source. It stands alone as a FORE-proprietary module without dependency on standard timing MIBs. It is deployed in ATM switches requiring precise network clock synchronization, such as carrier ATM backbones sensitive to clock slips. Engineers can download the Fore-TIMING-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Fore-TIMING-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

Fore Systems/Marconi ForeRunner ATM switch

Monitoring Examples

Polling tcmTable/tcmEntry, an admin checks tcmPllStatus for PLL lock loss and tcmOperationStatus for overall module health, both strong indicators of a failing timing card. Comparing tcmRequestedTimingMode to tcmOperatingTimingMode, along with tcmModeFailover, reveals whether the switch has silently failed over from its primary clock reference (tcmCurrentTimingRef) to a backup source, an event that can cause cell/frame slips if left unnoticed.

What Can Be Monitored

PLL lock status
timing module operation status
current timing reference source
requested vs operating timing mode
timing mode failover events

Imported Objects

From Fore-Common-MIB

hardware

OBJECT-IDENTITY

From Fore-TrapLog-MIB

trapLogIndex

OBJECT-TYPE

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

DisplayString
TimeInterval

OIDs

OID symbolic	OID numeric	Type	Access	Description
tcmGroup	1.3.6.1.4.1.326.2.2.1.11			write something interesting here
NTF tcmTimingSourceChange	1.3.6.1.4.1.326.2.2.1.11.0.1			This trap is generated whenever the Timing Control Module (TCM) timing source (tcmCurrentTimingRef) is changed either manually or by the system due to failure detection.
NTF tcmTimingSourceFailed	1.3.6.1.4.1.326.2.2.1.11.0.2			This trap is generated whenever the Timing Control Module (TCM) timing source (tcmCurrentTimingRef) fails.
tcmTable	1.3.6.1.4.1.326.2.2.1.11.1		not-accessible	This table contains the hardware information for the Timing Control Module (TCM) s.
tcmEntry	1.3.6.1.4.1.326.2.2.1.11.1.1		not-accessible	This table entry contains the hardware information for a single Timing Control Module (TCM) .
I32 tcmIndex	1.3.6.1.4.1.326.2.2.1.11.1.1.1	Integer32	not-accessible	This is the index for this Timing Control Module (TCM) .
INT tcmHwType	1.3.6.1.4.1.326.2.2.1.11.1.1.2	INTEGER	read-only	This is the type for this Timing Control Module (TCM) .
I32 tcmHwVersion	1.3.6.1.4.1.326.2.2.1.11.1.1.3	Integer32	read-only	This is the version for this Timing Control Module (TCM) .
INT tcmPllStatus	1.3.6.1.4.1.326.2.2.1.11.1.1.4	INTEGER	read-only	This is the phase-locked loop (PLL) status for this Timing Control Module (TCM) .
INT tcmOperationStatus	1.3.6.1.4.1.326.2.2.1.11.1.1.5	INTEGER	read-only	This is the operation status of the clock output for this Timing Control Module (TCM). The status is enabled if the switch is configured to use TCM for timing and disabled otherwise.
INT tcmCurrentTimingRef	1.3.6.1.4.1.326.2.2.1.11.1.1.6	INTEGER	read-only	This is the current timing reference in use for this Timing Control Module (TCM) .
TCM tcmRequestedTimingMode	1.3.6.1.4.1.326.2.2.1.11.1.1.7	TcmTimingMode	read-write	This is the timing reference requested to be used for this Timing Control Module (TCM) .
TCM tcmOperatingTimingMode	1.3.6.1.4.1.326.2.2.1.11.1.1.8	TcmTimingMode	read-only	This is the operating timing mode, which can be different from the requested timing mode if mode failover is enabled.
INT tcmModeFailover	1.3.6.1.4.1.326.2.2.1.11.1.1.9	INTEGER	read-write	This is the modefailover that causes the Timing Control Module (TCM) to automatically switch between timing modes (for example external to line) if it is enabled.
TCM tcmPrimaryRefSource	1.3.6.1.4.1.326.2.2.1.11.1.1.10	TcmReferenceSource	read-only	This is the primary timing reference source for this Timing Control Module (TCM) .
TCM tcmSecondaryRefSource	1.3.6.1.4.1.326.2.2.1.11.1.1.11	TcmReferenceSource	read-only	This is the secondary timing reference source for this Timing Control Module (TCM) .
INT tcmBitsFramingFormat	1.3.6.1.4.1.326.2.2.1.11.1.1.12	INTEGER	read-write	This is the framing format of the BITS interface for this Timing Control Module (TCM) .
INT tcmBitsCodingFormat	1.3.6.1.4.1.326.2.2.1.11.1.1.13	INTEGER	read-write	This is the coding format of the BITS interface for this Timing Control Module (TCM) .
INT tcmBitsOutputLevel	1.3.6.1.4.1.326.2.2.1.11.1.1.14	INTEGER	read-write	This is the output level (dB) of the DS1 BITS interface for this Timing Control Module (TCM) .
INT tcmRevertiveSwitching	1.3.6.1.4.1.326.2.2.1.11.1.1.15	INTEGER	read-write	This is the status of the revertive switching for timing sources on this Timing Control Module (TCM) .
NUM tcmRevertiveDelay	1.3.6.1.4.1.326.2.2.1.11.1.1.16	TimeInterval	read-write	This is the amount of time after the restoration of the primary timing reference before the Timing Control Module (TCM) will be instructed to return to the primary timing reference. This value is truncated to whole seconds.
NUM tcmFailoverDelay	1.3.6.1.4.1.326.2.2.1.11.1.1.17	TimeInterval	read-write	This is the amount of time after the failure of a timing reference before the Timing Control Module (TCM) will be instructed to switch to the next available timing reference. This value is truncated to whole seconds.
tcmReferenceTable	1.3.6.1.4.1.326.2.2.1.11.2		not-accessible	This table contains the timing reference source information for the Timing Control Module (TCM) .
tcmReferenceEntry	1.3.6.1.4.1.326.2.2.1.11.2.1		not-accessible	This table entry contains the timing reference source information for a single Timing Control Module (TCM) .
TCM tcmRefSource	1.3.6.1.4.1.326.2.2.1.11.2.1.1	TcmReferenceSource	not-accessible	This is the timing reference source index for the Timing Control Module (TCM) .
STR tcmRefSourceText	1.3.6.1.4.1.326.2.2.1.11.2.1.2	DisplayString	read-only	This is a textual description of the timing reference source that is provided to the Timing Control Module (TCM).
INT tcmRefSourceStatus	1.3.6.1.4.1.326.2.2.1.11.2.1.3	INTEGER	read-only	This is the status of the timing reference source that is provided to the Timing Control Module (TCM).
INT tcmRefSourceAdminStatus	1.3.6.1.4.1.326.2.2.1.11.2.1.4	INTEGER	read-write	This is the admin status of the timing reference source that is provided to the Timing Control Module (TCM).
INT tcmRefSourceQualStatus	1.3.6.1.4.1.326.2.2.1.11.2.1.5	INTEGER	read-only	This is the RefQual status of the timing reference source that is provided to the Timing Control Module (TCM) .
DER tcmTxBits1RefSource	1.3.6.1.4.1.326.2.2.1.11.3	DerivedReferenceSource	read-write	This object is the timing source that is used to derive DS1 or E1 signal transmitted out on the BITS1 interface.
DER tcmTxBits2RefSource	1.3.6.1.4.1.326.2.2.1.11.4	DerivedReferenceSource	read-write	This object is the timing source that is used to derive DS1 or E1 signal transmitted out on the BITS2 interface.
INT tcmTxBitsOperMode	1.3.6.1.4.1.326.2.2.1.11.5	INTEGER	read-write	This object refers to the mode of operation for the derived DS1 or E1 outputs. In thresholdAIS mode, AIS is transmitted on the derived DS1 or E1 signal when the transmit reference source becomes unacceptable. In automatic mode, synchronization status messages are passed through on the derived DS1 or E1 output if SSM Automatic Reference Switching is enabled and the DS1 or E1 frame format supports SSM. Otherwise, AIS is transmitted when the reference becomes unacceptable.

RFC description

Timing and TCM (Timing Clock Module) management for Fore Systems ATM network platforms.

Start monitoring Fore Systems/Marconi ForeRunner ATM switch (clock/timing synchronization) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download Fore-TIMING-MIB

What Is Fore-TIMING-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description