Nortel-MsCarrier-MscPassport-VnetNisSigMIB

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Category: Nortel Passport WAN

Description: Manages NIS (Network Interworking Signalling) protocol objects on Nortel MsCarrier Passport virtual network interfaces.

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What Is Nortel-MsCarrier-MscPassport-VnetNisSigMIB?

This Nortel MscPassport MIB manages NIS (Network Interworking Signalling) protocol objects on virtual network interfaces of Passport switches, covering Layer-2 signalling channel parameters used for frame relay/ATM network interworking. It exposes L2 signalling tables with timer and retry-count parameters (T200, T23, N200) alongside the standard row-status and framer sub-component objects for each signalling channel. The MIB's monitoring value lies in tracking signalling-channel software/link state -- confirming channels are active, checking their configured timers, and inspecting framer status -- functioning as a protocol-health monitor rather than exposing hardware sensors. It is built on ITU/ANSI Layer-2 signalling conventions (T200/N200-style timers akin to LAPD) layered onto the vendor's Passport component/row-status framework. This module runs only on legacy Nortel/Alcatel Passport switches providing frame relay/ATM network interworking signalling in carrier WAN deployments. Engineers can download the Nortel-MsCarrier-MscPassport-VnetNisSigMIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Nortel-MsCarrier-MscPassport-VnetNisSigMIB. 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/Alcatel-Lucent Passport switch (frame relay/ATM interworking)
MscPassport carrier switching platform

Monitoring Examples

An operator can poll mscSigChanNisL2Table to read mscSigChanNisT200, mscSigChanNisT23, and mscSigChanNisN200 for a signalling channel identified by mscSigChanNisIndex to confirm the Layer-2 signalling timers match the expected configuration. Checking mscSigChanNisRowStatus and the mscSigChanNisFramer sub-object reveals whether the channel is active and whether the underlying framer reports synchronization. A channel repeatedly retransmitting past its N200 retry count suggests a signalling link problem between interworking peers.

What Can Be Monitored

signalling channel row status
Layer-2 timer values (T200/T23)
retry count (N200)
signalling channel framer state

Imported Objects

From Nortel-MsCarrier-MscPassport-StandardTextualConventionsMIB

DisplayString
RowStatus
StorageType
Unsigned32

From Nortel-MsCarrier-MscPassport-TextualConventionsMIB

Link
NonReplicated

From Nortel-MsCarrier-MscPassport-UsefulDefinitionsMIB

mscPassportMIBs

OBJECT-IDENTITY

From Nortel-MsCarrier-MscPassport-VoiceNetworkingMIB

mscSigChan	OBJECT-IDENTITY
mscSigChanIndex	OBJECT-TYPE

From RFC-1212

OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
mscSigChanNis	1.3.6.1.4.1.562.36.2.1.115.8
mscSigChanNisRowStatusTable	1.3.6.1.4.1.562.36.2.1.115.8.1		not-accessible	This entry controls the addition and deletion of mscSigChanNis components.
mscSigChanNisRowStatusEntry	1.3.6.1.4.1.562.36.2.1.115.8.1.1		not-accessible	A single entry in the table represents a single mscSigChanNis component.
ROW mscSigChanNisRowStatus	1.3.6.1.4.1.562.36.2.1.115.8.1.1.1	RowStatus	read-write	This variable is used as the basis for SNMP naming of mscSigChanNis components. These components can be added and deleted.
STR mscSigChanNisComponentName	1.3.6.1.4.1.562.36.2.1.115.8.1.1.2	DisplayString	read-only	This variable provides the component's string name for use with the ASCII Console Interface
STO mscSigChanNisStorageType	1.3.6.1.4.1.562.36.2.1.115.8.1.1.4	StorageType	read-only	This variable represents the storage type value for the mscSigChanNis tables.
NON mscSigChanNisIndex	1.3.6.1.4.1.562.36.2.1.115.8.1.1.10	NonReplicated	not-accessible	This variable represents the index for the mscSigChanNis tables.
mscSigChanNisFramer	1.3.6.1.4.1.562.36.2.1.115.8.2
mscSigChanNisFramerRowStatusTable	1.3.6.1.4.1.562.36.2.1.115.8.2.1		not-accessible	This entry controls the addition and deletion of mscSigChanNisFramer components.
mscSigChanNisFramerRowStatusEntry	1.3.6.1.4.1.562.36.2.1.115.8.2.1.1		not-accessible	A single entry in the table represents a single mscSigChanNisFramer component.
ROW mscSigChanNisFramerRowStatus	1.3.6.1.4.1.562.36.2.1.115.8.2.1.1.1	RowStatus	read-only	This variable is used as the basis for SNMP naming of mscSigChanNisFramer components. These components cannot be added nor deleted.
STR mscSigChanNisFramerComponentName	1.3.6.1.4.1.562.36.2.1.115.8.2.1.1.2	DisplayString	read-only	This variable provides the component's string name for use with the ASCII Console Interface
STO mscSigChanNisFramerStorageType	1.3.6.1.4.1.562.36.2.1.115.8.2.1.1.4	StorageType	read-only	This variable represents the storage type value for the mscSigChanNisFramer tables.
NON mscSigChanNisFramerIndex	1.3.6.1.4.1.562.36.2.1.115.8.2.1.1.10	NonReplicated	not-accessible	This variable represents the index for the mscSigChanNisFramer tables.
mscSigChanNisFramerProvTable	1.3.6.1.4.1.562.36.2.1.115.8.2.10		not-accessible	This group contains the base provisioning data for the Framer component. Application or hardware interface specific provisioning data is contained in other provisionable Framer groups.
mscSigChanNisFramerProvEntry	1.3.6.1.4.1.562.36.2.1.115.8.2.10.1		not-accessible	An entry in the mscSigChanNisFramerProvTable.
LIN mscSigChanNisFramerInterfaceName	1.3.6.1.4.1.562.36.2.1.115.8.2.10.1.1	Link	read-write	This attribute contains a hardware component name. The attribute associates the application with a specific link. This defines the module processor on which Framer's parent component (as well as Framer itself) will run.
mscSigChanNisFramerStateTable	1.3.6.1.4.1.562.36.2.1.115.8.2.12		not-accessible	This group contains the three OSI State attributes. The descriptions generically indicate what each state attribute implies about the component. Note that not all the values and state combinations described here are supported by every component which uses this group. For component-specific information and the valid state combinations, refer to NTP 241-7001-150, Passport Operations and Maintenance Guide.
mscSigChanNisFramerStateEntry	1.3.6.1.4.1.562.36.2.1.115.8.2.12.1		not-accessible	An entry in the mscSigChanNisFramerStateTable.
INT mscSigChanNisFramerAdminState	1.3.6.1.4.1.562.36.2.1.115.8.2.12.1.1	INTEGER	read-only	This attribute indicates the OSI Administrative State of the component. The value locked indicates that the component is administratively prohibited from providing services for its users. A Lock or Lock - force command has been previously issued for this component. When the value is locked, the value of usageState must be idle. The value shuttingDown indicates that the component is administratively permitted to provide service to its existing users only. A Lock command was issued against the component and it is in the process of shutting down. The value unlocked indicates that the component is administratively permitted to provide services for its users. To enter this state, issue an Unlock command to this component.
INT mscSigChanNisFramerOperationalState	1.3.6.1.4.1.562.36.2.1.115.8.2.12.1.2	INTEGER	read-only	This attribute indicates the OSI Operational State of the component. The value enabled indicates that the component is available for operation. Note that if adminState is locked, it would still not be providing service. The value disabled indicates that the component is not available for operation. For example, something is wrong with the component itself, or with another component on which this one depends. If the value is disabled, the usageState must be idle.
INT mscSigChanNisFramerUsageState	1.3.6.1.4.1.562.36.2.1.115.8.2.12.1.3	INTEGER	read-only	This attribute indicates the OSI Usage State of the component. The value idle indicates that the component is not currently in use. The value active indicates that the component is in use and has spare capacity to provide for additional users. The value busy indicates that the component is in use and has no spare operating capacity for additional users at this time.
mscSigChanNisFramerStatsTable	1.3.6.1.4.1.562.36.2.1.115.8.2.13		not-accessible	This group contains the operational statistics data for a Framer component.
mscSigChanNisFramerStatsEntry	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1		not-accessible	An entry in the mscSigChanNisFramerStatsTable.
U32 mscSigChanNisFramerFrmToIf	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.1	Unsigned32	read-only	This attribute counts the number of frames transmitted to the link interface by Framer. This count wraps to zero after reaching its maximum value.
U32 mscSigChanNisFramerFrmFromIf	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.2	Unsigned32	read-only	This attribute counts the number of frames received from the link interface by Framer. This count wraps to zero after reaching its maximum value.
U32 mscSigChanNisFramerOctetFromIf	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.3	Unsigned32	read-only	The number of bytes received from the link interface by Framer.
U32 mscSigChanNisFramerAborts	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.4	Unsigned32	read-only	This attribute counts the total number of aborts received. This count wraps to zero after reaching its maximum value.
U32 mscSigChanNisFramerCrcErrors	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.5	Unsigned32	read-only	This attribute counts the total number of frames with CRC errors. This count wraps to zero after reaching its maximum value.
U32 mscSigChanNisFramerLrcErrors	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.6	Unsigned32	read-only	This attribute counts the total number of frames with LRC errors. This count wraps to zero after reaching its maximum value.
U32 mscSigChanNisFramerNonOctetErrors	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.7	Unsigned32	read-only	This attribute counts the total number of frames that were non octet aligned. This count wraps to zero after reaching its maximum value.
U32 mscSigChanNisFramerOverruns	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.8	Unsigned32	read-only	This attribute counts the total number of frames received from the link for which overruns occurred. This count wraps to zero after reaching its maximum value.
U32 mscSigChanNisFramerUnderruns	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.9	Unsigned32	read-only	This attribute counts the total number of frames transmitted to the link for which underruns occurred. This count wraps to zero after reaching its maximum value.
U32 mscSigChanNisFramerLargeFrmErrors	1.3.6.1.4.1.562.36.2.1.115.8.2.13.1.10	Unsigned32	read-only	This attribute counts the total number of frames received which were too large (longer than 500 bytes). This count wraps to zero after reaching its maximum value.
mscSigChanNisL2Table	1.3.6.1.4.1.562.36.2.1.115.8.11		not-accessible	This group specifies the provisionable layer 2 attributes of the Q.931 ITU-T protocol.
mscSigChanNisL2Entry	1.3.6.1.4.1.562.36.2.1.115.8.11.1		not-accessible	An entry in the mscSigChanNisL2Table.
U32 mscSigChanNisT23	1.3.6.1.4.1.562.36.2.1.115.8.11.1.1	Unsigned32	read-write	This attribute specifies the layer 2 enable request timer.
U32 mscSigChanNisT200	1.3.6.1.4.1.562.36.2.1.115.8.11.1.2	Unsigned32	read-write	This attribute specifies the maximum time between a layer 2 frame and its acknowledgment.
U32 mscSigChanNisN200	1.3.6.1.4.1.562.36.2.1.115.8.11.1.3	Unsigned32	read-write	This attribute specifies the maximum number of re-transmissions of a layer 2 frame.
U32 mscSigChanNisT203	1.3.6.1.4.1.562.36.2.1.115.8.11.1.4	Unsigned32	read-write	This attribute specifies the maximum time for which layer 2 frames may be absent. Expiry triggers a check on whether the far end is alive.
U32 mscSigChanNisCircuitSwitchedK	1.3.6.1.4.1.562.36.2.1.115.8.11.1.6	Unsigned32	read-write	This attribute specifies the maximum number of sequentially numbered I frames (that is, window size (k)) that may be unacknowledged at any given time for a SAP supporting primary rate (64kbit/sec) signalling.
mscSigChanNisL3Table	1.3.6.1.4.1.562.36.2.1.115.8.12		not-accessible	This group represents the provisionable Layer 3 timer attributes of a the Nis signalling protocol.
mscSigChanNisL3Entry	1.3.6.1.4.1.562.36.2.1.115.8.12.1		not-accessible	An entry in the mscSigChanNisL3Table.
U32 mscSigChanNisT309	1.3.6.1.4.1.562.36.2.1.115.8.12.1.3	Unsigned32	read-write	This attribute specifies the data link failure timer; used to ride out temporary failures.
U32 mscSigChanNisT310	1.3.6.1.4.1.562.36.2.1.115.8.12.1.4	Unsigned32	read-write	This attribute specifies the call proceeding state timer.
mscSigChanNisProvTable	1.3.6.1.4.1.562.36.2.1.115.8.13		not-accessible	This group defines the general options of the D-channel signalling link.
mscSigChanNisProvEntry	1.3.6.1.4.1.562.36.2.1.115.8.13.1		not-accessible	An entry in the mscSigChanNisProvTable.
INT mscSigChanNisSide	1.3.6.1.4.1.562.36.2.1.115.8.13.1.1	INTEGER	read-write	This attribute specifies whether the interface is the network or user side of the connection. The parameter applies to both the layer 2 and layer 3 of the interface. If this attribute is set to network, then the interface is master during channel negotiation. If this attribute is set to user, then the interface is slave during channel negotiation.
U32 mscSigChanNisMaxNonCallConcurrent	1.3.6.1.4.1.562.36.2.1.115.8.13.1.2	Unsigned32	read-write	This attribute specifies the maximum number of simultaneous active non-call messages that are allowed.
mscSigChanNisStateTable	1.3.6.1.4.1.562.36.2.1.115.8.14		not-accessible	This group contains the three OSI State attributes. The descriptions generically indicate what each state attribute implies about the component. Note that not all the values and state combinations described here are supported by every component which uses this group. For component-specific information and the valid state combinations, refer to NTP 241-7001-150, Passport Operations and Maintenance Guide.
mscSigChanNisStateEntry	1.3.6.1.4.1.562.36.2.1.115.8.14.1		not-accessible	An entry in the mscSigChanNisStateTable.
INT mscSigChanNisAdminState	1.3.6.1.4.1.562.36.2.1.115.8.14.1.1	INTEGER	read-only	This attribute indicates the OSI Administrative State of the component. The value locked indicates that the component is administratively prohibited from providing services for its users. A Lock or Lock - force command has been previously issued for this component. When the value is locked, the value of usageState must be idle. The value shuttingDown indicates that the component is administratively permitted to provide service to its existing users only. A Lock command was issued against the component and it is in the process of shutting down. The value unlocked indicates that the component is administratively permitted to provide services for its users. To enter this state, issue an Unlock command to this component.
INT mscSigChanNisOperationalState	1.3.6.1.4.1.562.36.2.1.115.8.14.1.2	INTEGER	read-only	This attribute indicates the OSI Operational State of the component. The value enabled indicates that the component is available for operation. Note that if adminState is locked, it would still not be providing service. The value disabled indicates that the component is not available for operation. For example, something is wrong with the component itself, or with another component on which this one depends. If the value is disabled, the usageState must be idle.
INT mscSigChanNisUsageState	1.3.6.1.4.1.562.36.2.1.115.8.14.1.3	INTEGER	read-only	This attribute indicates the OSI Usage State of the component. The value idle indicates that the component is not currently in use. The value active indicates that the component is in use and has spare capacity to provide for additional users. The value busy indicates that the component is in use and has no spare operating capacity for additional users at this time.
mscSigChanNisStatsTable	1.3.6.1.4.1.562.36.2.1.115.8.15		not-accessible	This group provides the operational components for the NisSig component.
mscSigChanNisStatsEntry	1.3.6.1.4.1.562.36.2.1.115.8.15.1		not-accessible	An entry in the mscSigChanNisStatsTable.
U32 mscSigChanNisTotalCallsToIf	1.3.6.1.4.1.562.36.2.1.115.8.15.1.2	Unsigned32	read-only	This attribute counts the total number of calls that have been made to the interface. The value wraps when it reaches its maximum.
U32 mscSigChanNisTotalCallsFromIf	1.3.6.1.4.1.562.36.2.1.115.8.15.1.3	Unsigned32	read-only	This attribute counts the total number of calls from the interface. The value wraps when it reaches its maximum.
U32 mscSigChanNisNonCallAssocSessionsToIf	1.3.6.1.4.1.562.36.2.1.115.8.15.1.4	Unsigned32	read-only	This attribute counts the total number of non-call associated sessions to the interface. The value wraps when it reaches its maximum.
U32 mscSigChanNisNonCallAssocSessionsFromIf	1.3.6.1.4.1.562.36.2.1.115.8.15.1.5	Unsigned32	read-only	This attribute counts the total number of non-call associated sessions from the interface. The value wraps when it reaches its maximum.
mscSigChanNisOperTable	1.3.6.1.4.1.562.36.2.1.115.8.16		not-accessible	This group provides the operational attributes for the NisSig protocol.
mscSigChanNisOperEntry	1.3.6.1.4.1.562.36.2.1.115.8.16.1		not-accessible	An entry in the mscSigChanNisOperTable.
U32 mscSigChanNisActiveChannels	1.3.6.1.4.1.562.36.2.1.115.8.16.1.1	Unsigned32	read-only	This attribute indicates the number of currently active channels. This includes data and voice channels.
U32 mscSigChanNisActiveVoiceChannels	1.3.6.1.4.1.562.36.2.1.115.8.16.1.2	Unsigned32	read-only	This attribute indicates the number of channels that are currently carrying voice.
U32 mscSigChanNisActiveDataChannels	1.3.6.1.4.1.562.36.2.1.115.8.16.1.3	Unsigned32	read-only	This attribute indicates the number of channels that are currently carrying data. This does not include modem data.
U32 mscSigChanNisPeakActiveChannels	1.3.6.1.4.1.562.36.2.1.115.8.16.1.4	Unsigned32	read-only	This attribute indicates the maximum number of channels that have been active on this signalling channel during the last polling period.
U32 mscSigChanNisPeakActiveVoiceChannels	1.3.6.1.4.1.562.36.2.1.115.8.16.1.5	Unsigned32	read-only	This attribute indicates the maximum number of voice channels that have been active on this signalling channel during the last polling period.
U32 mscSigChanNisPeakActiveDataChannels	1.3.6.1.4.1.562.36.2.1.115.8.16.1.6	Unsigned32	read-only	This attribute indicates the maximum number of data channels that have been active on this signalling channel during the last polling period.
INT mscSigChanNisDChanStatus	1.3.6.1.4.1.562.36.2.1.115.8.16.1.7	INTEGER	read-only	This attribute indicates the state of the D-channel. outOfService means that there is no layer 2 or layer 3 connectivity to the PBX. establishing means that the signalling channel is attempting to stage the layer 2. established means that the layer 2 is enabled. If the signalling channel stays in the established state, then it is waiting for a restart from the PBX. enabling means that the resources for processing calls are being initialized. If the signalling channel stays in the enabling state then it is waiting for a restart acknowledgement from the PBX. inService means that the resources for processing calls are available. restarting means that the resources for call processing are being rei-initialized.
mscSigChanNisToolsTable	1.3.6.1.4.1.562.36.2.1.115.8.17		not-accessible	This contains a series of operational attributes which turn on and off several kinds of tracing.
mscSigChanNisToolsEntry	1.3.6.1.4.1.562.36.2.1.115.8.17.1		not-accessible	An entry in the mscSigChanNisToolsTable.
OCT mscSigChanNisTracing	1.3.6.1.4.1.562.36.2.1.115.8.17.1.1	OCTET STRING	read-write	This attribute defines which types of tracing are active for this signalling channel. The tracing messages are sent to the debug stream. To see the messages the agentQueue attribute in Col/debug must be greater than 0 and a Telnet NMIS session must list the debug stream in in its data streams (ex. set nmis telnet session/1 dataStreams debug). Different types of tracing can be enabled simultaneously. Note that tracing consumes additional CPU resources and will slow down call processing on a heavily loaded card. If there is message block exhaustion tracing will be suspended for a period and then automatically reenabled. An alarm is generated on tracing suspension and resumption. This mechanism protects the function processor against excessive numbers of tracing messages. Types of tracing include: protocolErrors - get details of any protocol errors which are occuring. Protocol errors are also reported in summary form as alarms. q931Summary - Summary of the Q.931 messages on the signalling link, including certain call details (calling number, called number, release codes). q931Hex - Q.931 messages displayed in hex format. Useful to determine protocol compliance in case of errors reported on local or remote ends. q931Symbolic - Q.931 messages parsed to give maximum detail. Useful for understanding content of messages flowing on the link. portHex - Messages in hex format being sent and received on the link. Description of bits: protocolErrors(0) q931Summary(1) q931Hex(2) q931Symbolic(3) portHex(4)
mscSigChanNisNisSpecificProvTable	1.3.6.1.4.1.562.36.2.1.115.8.18		not-accessible	This group provides NIS protocol specific provisioning.
mscSigChanNisNisSpecificProvEntry	1.3.6.1.4.1.562.36.2.1.115.8.18.1		not-accessible	An entry in the mscSigChanNisNisSpecificProvTable.
INT mscSigChanNisChanMaintenanceHandling	1.3.6.1.4.1.562.36.2.1.115.8.18.1.1	INTEGER	read-write	This attribute specifies how channel maintenance events should be handled upon startup. Channel maintenance events include locking and unlocking a channel or channel registration. The decision is either to send individual channel RESTART messages, SERVICE messages, or nothing. Note that channel registration only occurs after the global interface restart at startup. Setting this attribute to enable SERVICE messages ensures that SERVICE messages occur at startup and whenever a channel goes into or out of service. If this attribute is not set to enable SERVICE messaging, a RESTART is always sent on unlocking a channel. globalOnStartup provides the minimum required functionality at startup, without any individual channel confirmation. Note that when this is set, channel RESTART is still used for channel unlock. globalOnStartup applies to SigChan startup only. serviceMessage enables sending and receiving SERVICE messages. If this attribute is set to serviceMessage, SERVICE messages are used for channel maintenance on channel lock, channel unlock, and startup. restartMessage specifies that individual channel RESTARTs when the SigChan starts up. If this attribute is set to restartMessage, a RESTART message is used to send at startup and channel unlock.
vnetNisSigMIB	1.3.6.1.4.1.562.36.2.2.112
vnetNisSigGroup	1.3.6.1.4.1.562.36.2.2.112.1
vnetNisSigGroupCA	1.3.6.1.4.1.562.36.2.2.112.1.1
vnetNisSigGroupCA02	1.3.6.1.4.1.562.36.2.2.112.1.1.3
vnetNisSigGroupCA02A	1.3.6.1.4.1.562.36.2.2.112.1.1.3.2
vnetNisSigCapabilities	1.3.6.1.4.1.562.36.2.2.112.3
vnetNisSigCapabilitiesCA	1.3.6.1.4.1.562.36.2.2.112.3.1
vnetNisSigCapabilitiesCA02	1.3.6.1.4.1.562.36.2.2.112.3.1.3
vnetNisSigCapabilitiesCA02A	1.3.6.1.4.1.562.36.2.2.112.3.1.3.2

RFC description

Nortel MsCarrier NIS signaling channel management MIB for voice networking.

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Download Nortel-MsCarrier-MscPassport-VnetNisSigMIB

What Is Nortel-MsCarrier-MscPassport-VnetNisSigMIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

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RFC description