Nortel-MsCarrier-MscPassport-FrameRelayIsdnMIB

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Category: Frame Relay, Nortel MsCarrier MscPassport

Description: Provides SNMP objects for Frame Relay over ISDN bearer service on Nortel MsCarrier MscPassport switches.

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What Is Nortel-MsCarrier-MscPassport-FrameRelayIsdnMIB?

This MIB manages Frame Relay over ISDN bearer service (an ITU-T Q.933-style switched Frame Relay UNI signaled over an ISDN D-channel) on the Nortel MSC Passport mobile carrier switch. It exposes mscFrUniIsdnProvTable with mscFrUniIsdnT320 (an ISDN signaling timer) and mscFrUniIsdnAddressSignalling (addressing/signalling mode configuration), plus an operational table carrying live connection state. Monitoring focuses on signaling timer behavior and connection operational status for switched Frame Relay-over-ISDN circuits, since repeated signaling timer expiries reveal that on-demand connections are failing to establish. It depends on ITU-T Q.921/Q.933 ISDN signaling standards and the shared Passport component/RowStatus conventions, alongside general Frame Relay UNI concepts. It is deployed on MSC Passport ISDN-signaled frame relay access ports in carrier networks offering switched/on-demand frame relay service. Engineers can download the Nortel-MsCarrier-MscPassport-FrameRelayIsdnMIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Nortel-MsCarrier-MscPassport-FrameRelayIsdnMIB. 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
ISDN-signaled Frame Relay UNI access port

Monitoring Examples

An engineer checks mscFrUniIsdnProvTable/mscFrUniIsdnProvEntry to verify the mscFrUniIsdnT320 signaling timer and mscFrUniIsdnAddressSignalling mode configured for an ISDN-signaled frame relay UNI (mscFrUniIsdnComponentName), then reviews mscFrUniIsdnOperTable for the live connection state. Repeated T320 timer expiries logged against a UNI component indicate the ISDN signaling exchange for call/connection setup is failing, preventing on-demand frame relay circuits from being established.

What Can Be Monitored

ISDN signaling timer (T320) configuration
address signalling mode
FR-over-ISDN connection operational state
component row status

Imported Objects

From Nortel-MsCarrier-MscPassport-FrameRelayUniMIB

mscFrUni	OBJECT-IDENTITY
mscFrUniIndex	OBJECT-TYPE

From Nortel-MsCarrier-MscPassport-StandardTextualConventionsMIB

Counter32
DisplayString
RowStatus
StorageType
Unsigned32

From Nortel-MsCarrier-MscPassport-TextualConventionsMIB

DigitString
NonReplicated

From Nortel-MsCarrier-MscPassport-UsefulDefinitionsMIB

mscPassportMIBs

OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
mscFrUniIsdn	1.3.6.1.4.1.562.36.2.1.71.100
mscFrUniIsdnRowStatusTable	1.3.6.1.4.1.562.36.2.1.71.100.1		not-accessible	This entry controls the addition and deletion of mscFrUniIsdn components.
mscFrUniIsdnRowStatusEntry	1.3.6.1.4.1.562.36.2.1.71.100.1.1		not-accessible	A single entry in the table represents a single mscFrUniIsdn component.
ROW mscFrUniIsdnRowStatus	1.3.6.1.4.1.562.36.2.1.71.100.1.1.1	RowStatus	read-write	This variable is used as the basis for SNMP naming of mscFrUniIsdn components. These components can be added and deleted.
STR mscFrUniIsdnComponentName	1.3.6.1.4.1.562.36.2.1.71.100.1.1.2	DisplayString	read-only	This variable provides the component's string name for use with the ASCII Console Interface
STO mscFrUniIsdnStorageType	1.3.6.1.4.1.562.36.2.1.71.100.1.1.4	StorageType	read-only	This variable represents the storage type value for the mscFrUniIsdn tables.
NON mscFrUniIsdnIndex	1.3.6.1.4.1.562.36.2.1.71.100.1.1.10	NonReplicated	not-accessible	This variable represents the index for the mscFrUniIsdn tables.
mscFrUniIsdnProvTable	1.3.6.1.4.1.562.36.2.1.71.100.11		not-accessible	This group contains the provisionable attributes of the Isdn component.
mscFrUniIsdnProvEntry	1.3.6.1.4.1.562.36.2.1.71.100.11.1		not-accessible	An entry in the mscFrUniIsdnProvTable.
U32 mscFrUniIsdnT320	1.3.6.1.4.1.562.36.2.1.71.100.11.1.1	Unsigned32	read-write	This attribute specifies the waiting time for a silent B-Channel (no active VCs associated with the FrUni) to be disconnected and made available. Default is 60 seconds. 0 means t320 will never timeout.
INT mscFrUniIsdnAddressSignalling	1.3.6.1.4.1.562.36.2.1.71.100.11.1.2	INTEGER	read-write	This attribute defines whether the ISDN Calling Party Number is to be signalled to the remote DTE during an SVC call establishment. Otherwise, no changes to the current behavior of SVC call establishement (i.e., Passport Dna is used in the calling party number information element).
mscFrUniIsdnOperTable	1.3.6.1.4.1.562.36.2.1.71.100.12		not-accessible	This group contains the operational attributes of the Isdn component.
mscFrUniIsdnOperEntry	1.3.6.1.4.1.562.36.2.1.71.100.12.1		not-accessible	An entry in the mscFrUniIsdnOperTable.
INT mscFrUniIsdnDataSigChan	1.3.6.1.4.1.562.36.2.1.71.100.12.1.1	INTEGER	read-only	This attribute indicates the instance number of the dataSigChan component controlling the allocation of this FrUni Isdn component.
INT mscFrUniIsdnBChannelState	1.3.6.1.4.1.562.36.2.1.71.100.12.1.2	INTEGER	read-only	This attribute indicates the state of the B-Channel. If the value is idle it means that no VCs are connected and this B-Channel is available. If the value is busy it means this B-Channel has been allocated and is not available. If the value is disabled it means the application interface or the port is locked or disabled.
STR mscFrUniIsdnLastUsedCgpn	1.3.6.1.4.1.562.36.2.1.71.100.12.1.3	DigitString	read-only	This attribute indicates the calling party number currently using the B-Channel. When the B-Channel is free, the null string is displayed.
INT mscFrUniIsdnBChanIntState	1.3.6.1.4.1.562.36.2.1.71.100.12.1.4	INTEGER	read-only	Debug information
C32 mscFrUniIsdnActiveVirtualCircuitsCount	1.3.6.1.4.1.562.36.2.1.71.100.12.1.5	Counter32	read-only	Current number of virtual circuits (switched and permanent) in data transfer.
frameRelayIsdnMIB	1.3.6.1.4.1.562.36.2.2.122
frameRelayIsdnGroup	1.3.6.1.4.1.562.36.2.2.122.1
frameRelayIsdnGroupCA	1.3.6.1.4.1.562.36.2.2.122.1.1
frameRelayIsdnGroupCA02	1.3.6.1.4.1.562.36.2.2.122.1.1.3
frameRelayIsdnGroupCA02A	1.3.6.1.4.1.562.36.2.2.122.1.1.3.2
frameRelayIsdnCapabilities	1.3.6.1.4.1.562.36.2.2.122.3
frameRelayIsdnCapabilitiesCA	1.3.6.1.4.1.562.36.2.2.122.3.1
frameRelayIsdnCapabilitiesCA02	1.3.6.1.4.1.562.36.2.2.122.3.1.3
frameRelayIsdnCapabilitiesCA02A	1.3.6.1.4.1.562.36.2.2.122.3.1.3.2

RFC description

Nortel MsCarrier MscPassport Frame Relay and ISDN MIB for managing frame relay and ISDN protocol functions on carrier-class switches (vendor-private).

Start monitoring Nortel MSC Passport mobile carrier switch / ISDN-signaled Frame Relay UNI port 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-FrameRelayIsdnMIB

What Is Nortel-MsCarrier-MscPassport-FrameRelayIsdnMIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description