Nortel-MsCarrier-MscPassport-FrameRelayEngMIB

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Category: Frame Relay, Nortel MsCarrier MscPassport

Description: Defines SNMP objects for Frame Relay engine performance tuning and congestion management on Nortel MsCarrier MscPassport.

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What Is Nortel-MsCarrier-MscPassport-FrameRelayEngMIB?

This MIB manages the Frame Relay switching engine's performance tuning and congestion behavior on a link processor (Lp) card in the Nortel MSC Passport mobile carrier switch. It exposes mscLpEngFrsOperTable with mscLpEngFrsMaxCalls (capacity limit), mscLpEngFrsCurrentCalls (current utilization), and mscLpEngFrsHeadroomCalls (remaining capacity) for the engine's call-handling load. This is a direct capacity/congestion monitoring MIB: administrators watch current calls against maximum capacity to detect a frame relay processing engine approaching saturation before it begins rejecting new connection requests. It depends on the shared Passport component/RowStatus conventions and interacts with the frame relay DTE/NNI/ATM interworking MIBs whose call traffic it processes. It is deployed on MSC Passport link processor cards carrying heavy frame relay traffic in carrier backbone networks where call-admission headroom needs active tracking. Network engineers evaluating or troubleshooting this functionality can download the Nortel-MsCarrier-MscPassport-FrameRelayEngMIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Nortel-MsCarrier-MscPassport-FrameRelayEngMIB. 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

Nortel MSC Passport mobile carrier switch
Passport link processor (Lp) card

Monitoring Examples

An operator polls mscLpEngFrsOperTable/mscLpEngFrsOperEntry for a link processor engine (mscLpEngFrsComponentName) to compare mscLpEngFrsCurrentCalls against mscLpEngFrsMaxCalls, deriving the remaining mscLpEngFrsHeadroomCalls. The mscLpEngFrsOv branch tracks overflow/overload conditions when headroom is exhausted. A frame relay engine whose mscLpEngFrsHeadroomCalls approaches zero indicates the link processor is nearing its call-handling capacity and new connection requests may soon be rejected.

What Can Be Monitored

current frame relay call count
maximum call capacity
remaining call headroom
engine overload/overflow status
component row status

Imported Objects

From Nortel-MsCarrier-MscPassport-LogicalProcessorMIB

mscLpEng	OBJECT-IDENTITY
mscLpEngIndex	OBJECT-TYPE
mscLpIndex	OBJECT-TYPE

From Nortel-MsCarrier-MscPassport-StandardTextualConventionsMIB

DisplayString
Gauge32
RowStatus
StorageType
Unsigned32

From Nortel-MsCarrier-MscPassport-TextualConventionsMIB

NonReplicated

From Nortel-MsCarrier-MscPassport-UsefulDefinitionsMIB

mscPassportMIBs

OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
mscLpEngFrs	1.3.6.1.4.1.562.36.2.1.12.23.3
mscLpEngFrsRowStatusTable	1.3.6.1.4.1.562.36.2.1.12.23.3.1		not-accessible	This entry controls the addition and deletion of mscLpEngFrs components.
mscLpEngFrsRowStatusEntry	1.3.6.1.4.1.562.36.2.1.12.23.3.1.1		not-accessible	A single entry in the table represents a single mscLpEngFrs component.
ROW mscLpEngFrsRowStatus	1.3.6.1.4.1.562.36.2.1.12.23.3.1.1.1	RowStatus	read-write	This variable is used as the basis for SNMP naming of mscLpEngFrs components. These components can be added and deleted.
STR mscLpEngFrsComponentName	1.3.6.1.4.1.562.36.2.1.12.23.3.1.1.2	DisplayString	read-only	This variable provides the component's string name for use with the ASCII Console Interface
STO mscLpEngFrsStorageType	1.3.6.1.4.1.562.36.2.1.12.23.3.1.1.4	StorageType	read-only	This variable represents the storage type value for the mscLpEngFrs tables.
NON mscLpEngFrsIndex	1.3.6.1.4.1.562.36.2.1.12.23.3.1.1.10	NonReplicated	not-accessible	This variable represents the index for the mscLpEngFrs tables.
mscLpEngFrsOv	1.3.6.1.4.1.562.36.2.1.12.23.3.2
mscLpEngFrsOvRowStatusTable	1.3.6.1.4.1.562.36.2.1.12.23.3.2.1		not-accessible	This entry controls the addition and deletion of mscLpEngFrsOv components.
mscLpEngFrsOvRowStatusEntry	1.3.6.1.4.1.562.36.2.1.12.23.3.2.1.1		not-accessible	A single entry in the table represents a single mscLpEngFrsOv component.
ROW mscLpEngFrsOvRowStatus	1.3.6.1.4.1.562.36.2.1.12.23.3.2.1.1.1	RowStatus	read-write	This variable is used as the basis for SNMP naming of mscLpEngFrsOv components. These components can be added and deleted.
STR mscLpEngFrsOvComponentName	1.3.6.1.4.1.562.36.2.1.12.23.3.2.1.1.2	DisplayString	read-only	This variable provides the component's string name for use with the ASCII Console Interface
STO mscLpEngFrsOvStorageType	1.3.6.1.4.1.562.36.2.1.12.23.3.2.1.1.4	StorageType	read-only	This variable represents the storage type value for the mscLpEngFrsOv tables.
NON mscLpEngFrsOvIndex	1.3.6.1.4.1.562.36.2.1.12.23.3.2.1.1.10	NonReplicated	not-accessible	This variable represents the index for the mscLpEngFrsOv tables.
mscLpEngFrsOvProvTable	1.3.6.1.4.1.562.36.2.1.12.23.3.2.10		not-accessible	This group contains the Frame Relay provisionable engineering parameters for this LP. DESCRIPTION
mscLpEngFrsOvProvEntry	1.3.6.1.4.1.562.36.2.1.12.23.3.2.10.1		not-accessible	An entry in the mscLpEngFrsOvProvTable.
U32 mscLpEngFrsOvMaxCalls	1.3.6.1.4.1.562.36.2.1.12.23.3.2.10.1.1	Unsigned32	read-write	This attribute specifies the maximum number of Frame Relay calls of any type (PVC, SPVC, or SVC) which can be simultaneously 'current' on this LP. Note that 'current' doesn't necessarily mean that the call is in data transfer. It minimally means that such a call can subsequently generate accounting records. When the value of currentCalls reaches the value of maxCalls for FR on this LP, subsequent call attempts are rejected by the FR services.
U32 mscLpEngFrsOvHeadroomCalls	1.3.6.1.4.1.562.36.2.1.12.23.3.2.10.1.2	Unsigned32	read-write	This attribute specifies a number which allows a network engineer to do some statistical multiplexing for admitting calls when certain overload conditions are reached. For setting this, refer to the Engineering Guidelines. It depends on conditions such as the expected sustained SVC call setup/clear rates and how conservative one wants to be in certain 'error' conditions where many calls are cleared simultaneously.
mscLpEngFrsOperTable	1.3.6.1.4.1.562.36.2.1.12.23.3.10		not-accessible	This group contains the Frame Relay default or current engineering parameters and statistics for this LP.
mscLpEngFrsOperEntry	1.3.6.1.4.1.562.36.2.1.12.23.3.10.1		not-accessible	An entry in the mscLpEngFrsOperTable.
U32 mscLpEngFrsMaxCalls	1.3.6.1.4.1.562.36.2.1.12.23.3.10.1.1	Unsigned32	read-only	This attribute indicates the maximum number of Frame Relay (FR) calls of any type (PVC, SPVC, or SVC) which can be simultaneously 'current' on the LP. Note that 'current' doesn't necessarily mean that the call is in data transfer. It minimally means that such a call can subsequently generate accounting records. When the value of currentCalls reaches the value of maxCalls for FR on this LP, subsequent call attempts are rejected by the FR service.
U32 mscLpEngFrsHeadroomCalls	1.3.6.1.4.1.562.36.2.1.12.23.3.10.1.2	Unsigned32	read-only	This attribute indicates a number which allows a network engineer to do some statistical multiplexing for admitting calls when certain overload conditions are reached. For setting this, refer to the Engineering Guidelines. It depends on conditions such as the expected sustained SVC call setup/clear rates and how conservative one wants to be in certain 'error' conditions where many calls are cleared simultaneously.
G32 mscLpEngFrsCurrentCalls	1.3.6.1.4.1.562.36.2.1.12.23.3.10.1.3	Gauge32	read-only	This attribute counts the total number of Frame Relay calls (initially just FrUni and FrNni) which are 'current'. Note that 'current' doesn't necessarily mean that the call is in data transfer. It minimally means that such a call can subsequently generate accounting records.
U32 mscLpEngFrsCallsRefused	1.3.6.1.4.1.562.36.2.1.12.23.3.10.1.4	Unsigned32	read-only	This attribute counts the total number of call connections (including calls from the link as well as calls from the subnet) that have been refused because currentCalls has reached the limits, as specified by the engineering formulas for Frs on this LP.
frameRelayEngMIB	1.3.6.1.4.1.562.36.2.2.73
frameRelayEngGroup	1.3.6.1.4.1.562.36.2.2.73.1
frameRelayEngGroupCA	1.3.6.1.4.1.562.36.2.2.73.1.1
frameRelayEngGroupCA02	1.3.6.1.4.1.562.36.2.2.73.1.1.3
frameRelayEngGroupCA02A	1.3.6.1.4.1.562.36.2.2.73.1.1.3.2
frameRelayEngCapabilities	1.3.6.1.4.1.562.36.2.2.73.3
frameRelayEngCapabilitiesCA	1.3.6.1.4.1.562.36.2.2.73.3.1
frameRelayEngCapabilitiesCA02	1.3.6.1.4.1.562.36.2.2.73.3.1.3
frameRelayEngCapabilitiesCA02A	1.3.6.1.4.1.562.36.2.2.73.3.1.3.2

RFC description

Frame Relay engineering parameters and statistics for Nortel MscPassport. Manages engineering data on logical processors.

Start monitoring Nortel MSC Passport mobile carrier switch / link processor card (Frame Relay engine capacity) 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 Nortel-MsCarrier-MscPassport-FrameRelayEngMIB

What Is Nortel-MsCarrier-MscPassport-FrameRelayEngMIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description