NNC-ATM-PROTOSTATISTICS-MIB

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Organization: Newbridge Networks Corporation

Last Updated: 1996-04-24

Category: ATM

Description: Collects Newbridge Networks ATM protocol-level statistics for signaling and control plane traffic.

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What Is NNC-ATM-PROTOSTATISTICS-MIB?

NNC-ATM-PROTOSTATISTICS-MIB is a Newbridge Networks (later Alcatel) proprietary MIB for ATM WAN switches, focused on cell-layer protocol and control-plane performance monitoring. It defines a family of interval-based statistics tables per interface — 15-minute current, 15-minute history, 24-hour, and raw unintervalized — each tracking ATM cell-layer counters over time. This is a traffic/performance-monitoring MIB rather than a hardware-health one: it lets operators watch cell error rates and control-plane traffic trends to detect ATM link degradation or signaling problems, complementing basic interface up/down status from IF-MIB. It relies on standard interface-index conventions (as used in IF-MIB) to map its per-interface statistics tables to physical ports. It was typically deployed on legacy Newbridge/Alcatel ATM switches and multiplexers in carrier or enterprise WAN backbones needing historical cell-layer trending. Engineers can download the NNC-ATM-PROTOSTATISTICS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in NNC-ATM-PROTOSTATISTICS-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

Newbridge Networks / Alcatel ATM switch
ATM WAN multiplexer

Monitoring Examples

An operator polls the ATM Cell Layer 15 Minute Current Table for a given interface to see near-real-time cell-layer error and traffic counts, then checks the 24 Hour Table to determine whether a spike is transient or sustained; the Raw Table's unintervalized counters allow custom bucket alignment, and a rising cell-error count against falling signaling-cell throughput would indicate a degrading ATM trunk.

What Can Be Monitored

ATM cell layer 15-minute current statistics
ATM cell layer 15-minute history
ATM cell layer 24-hour statistics
raw unintervalized cell layer counters
per-interface ATM control-plane traffic

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From NNCGNI0001-SMI

NncExtCounter64
nncExtensions	OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using nncAtmProtoRawValidInCells OID:

Select a Newbridge Networks/Alcatel ATM switches/multiplexer as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type nncAtmProtoRawValidInCells into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The number of cells received with correct or corrected headers, and valid VPI/VCI on this interface, since startup. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
nncAtmProtoStatistics	1.3.6.1.4.1.123.3.54			This module contains definitions for performance monitoring of the ATM cell layers. This MIB module contains the following tables: ATM Cell Layer 15 Minute Current Table (per interface) ATM Cell Layer 15 Minute History Table (per interface) ATM Cell Layer 24 Hour Table (per interface) ATM Cell Layer Raw Table (per interface; unintervalized) Intervals: Statistics per interface are collected over a historical stratum of up to a maximum of M intervals. The value of M is a function of a product's storage capability. For example, on the 36170 product, M = 96. The intervals are 15 minutes aligned to the quarter of an hour. The current interval spans back to the last 15 minute tick on the wall clock. Continuing along the timeline from that point is the most recently completed interval and has an index of 1. The previous interval has an index of 2 and so on. Note that the oldest interval may be incomplete since the statistic collection may have been enabled offset to the quarter or one hour tick. t 0 -15min -30min -45min ==========\|===========\|===========\|===========\|=========== current N = 1 N = 2 N = 3 N = 4 ... N = M interval
nncAtmProtoObjects	1.3.6.1.4.1.123.3.54.1
nncAtmProtoCurrTable	1.3.6.1.4.1.123.3.54.1.1		not-accessible	The ATM Cell Protocol Monitoring Current Data table.This table maintains per-interface statistics for the fifteen-minute interval currently being collected.
nncAtmProtoCurrEntry	1.3.6.1.4.1.123.3.54.1.1.1		not-accessible	An entry in the ATM Cell Protocol Monitoring Current Data table. Each ATM interface (UNI, BICI, BISSI) automatically has an entry in this table associated with it.
NUM nncAtmProtoCurrValidInCells	1.3.6.1.4.1.123.3.54.1.1.1.1	NncExtCounter64	read-only	Number of cells received with correct or corrected headers, and valid VPI/VCI on this interface, since the start of this interval
NUM nncAtmProtoCurrCorrHeaderInCells	1.3.6.1.4.1.123.3.54.1.1.1.2	NncExtCounter64	read-only	Number of cells received with corrected header errors on this interface, since the start of this interval.
NUM nncAtmProtoCurrDisHECInCells	1.3.6.1.4.1.123.3.54.1.1.1.3	NncExtCounter64	read-only	Number of received cells discarded due to uncorrectable header (HEC) errors on this interface, since the start of this interval.
NUM nncAtmProtoCurrDisInvalidVPIVCIInCells	1.3.6.1.4.1.123.3.54.1.1.1.4	NncExtCounter64	read-only	Number of received cells discarded due to invalid VPI/VCI on this interface, since the start of this interval.
NUM nncAtmProtoCurrOutCells	1.3.6.1.4.1.123.3.54.1.1.1.5	NncExtCounter64	read-only	Number of cells transmitted on this interface, since the start of this interval.
nncAtmProtoHistTable	1.3.6.1.4.1.123.3.54.1.2		not-accessible	The ATM Cell Protocol Monitoring Current Data table.This table maintains per-interface statistics for the fifteen-minute interval currently being collected.
nncAtmProtoHistEntry	1.3.6.1.4.1.123.3.54.1.2.1		not-accessible	An entry in the ATM Cell Protocol Monitoring History Data table.
INT nncAtmProtoHistIndex	1.3.6.1.4.1.123.3.54.1.2.1.1	INTEGER	not-accessible	A number between 1 and 96, which identifies the interval for which the set of statistics in this entry was collected. The interval identified by 1 is the most recently completed 15 minute interval, and the interval identified by N is the interval immediately preceding the one identified by N-1.
NUM nncAtmProtoHistValidInCells	1.3.6.1.4.1.123.3.54.1.2.1.2	NncExtCounter64	read-only	Number of cells received with correct or corrected headers, and valid VPI/VCI on this interface for this 15-min interval.
NUM nncAtmProtoHistCorrHeaderInCells	1.3.6.1.4.1.123.3.54.1.2.1.3	NncExtCounter64	read-only	Number of cells received with corrected header errors on this interface.
NUM nncAtmProtoHistDisHECInCells	1.3.6.1.4.1.123.3.54.1.2.1.4	NncExtCounter64	read-only	Number of received cells discarded due to uncorrectable header (HEC) errors on this interface for this 15-min interval.
NUM nncAtmProtoHistDisInvalidVPIVCIInCells	1.3.6.1.4.1.123.3.54.1.2.1.5	NncExtCounter64	read-only	Number of received cells discarded due to invalid VPI/VCI on this interface for this 15-min interval.
NUM nncAtmProtoHistOutCells	1.3.6.1.4.1.123.3.54.1.2.1.6	NncExtCounter64	read-only	Number of cells transmitted on this interface, for this 15-min interval.
nncAtmProtoTotalTable	1.3.6.1.4.1.123.3.54.1.3		not-accessible	The ATM Cell Protocol Monitoring Total 24 Hour Data table. This table maintains the cumulative sum of statistics per interface for the 24 hour period preceding the current interval.
nncAtmProtoTotalEntry	1.3.6.1.4.1.123.3.54.1.3.1		not-accessible	An entry in the ATM Cell Protocol Monitoring Total 24 Hour Data table.
INT nncAtmProtoTotalValidIntervals	1.3.6.1.4.1.123.3.54.1.3.1.1	INTEGER	read-only	Number of valid intervals in the previous 24 hour
NUM nncAtmProtoTotalValidInCells	1.3.6.1.4.1.123.3.54.1.3.1.2	NncExtCounter64	read-only	Number of cells received with correct or corrected headers, and valid VPI/VCI on this interface, in the previous 24 hour interval.
NUM nncAtmProtoTotalCorrHeaderInCells	1.3.6.1.4.1.123.3.54.1.3.1.3	NncExtCounter64	read-only	Number of cells received with corrected header errors on this interface, in the previous 24 hour interval.
NUM nncAtmProtoTotalDisHECInCells	1.3.6.1.4.1.123.3.54.1.3.1.4	NncExtCounter64	read-only	Number of received cells discarded due to uncorrectable header (HEC) errors on this interface, in the previous 24 hour interval.
NUM nncAtmProtoTotalDisInvalidVPIVCIInCells	1.3.6.1.4.1.123.3.54.1.3.1.5	NncExtCounter64	read-only	Number of received cells discarded due to invalid VPI/VCI on this interface, in the previous 24 hour interval.
NUM nncAtmProtoTotalOutCells	1.3.6.1.4.1.123.3.54.1.3.1.6	NncExtCounter64	read-only	Number of cells transmitted on this interface, in the previous 24 hour interval.
nncAtmProtoRawTable	1.3.6.1.4.1.123.3.54.1.4		not-accessible	The ATM Cell Protocol Monitoring Raw Data table. This table maintains per-interface raw statistics.
nncAtmProtoRawEntry	1.3.6.1.4.1.123.3.54.1.4.1		not-accessible	An entry in the ATM Cell Protocol Monitoring Raw Data table. Each ATM interface (UNI, BICI, BISSI) automatically has an entry in this table associated with it.
C32 nncAtmProtoRawValidInCellsEx	1.3.6.1.4.1.123.3.54.1.4.1.1	Counter32	read-only	The number of cells received with correct or corrected headers, and valid VPI/VCI on this interface, since startup.
C32 nncAtmProtoRawCorrHeaderInCells	1.3.6.1.4.1.123.3.54.1.4.1.2	Counter32	read-only	The number of cells received with corrected header errors on this interface, since startup.
C32 nncAtmProtoRawDisHECInCells	1.3.6.1.4.1.123.3.54.1.4.1.3	Counter32	read-only	The number of received cells discarded due to uncorrectable header (HEC) errors on this interface, since startup.
C32 nncAtmProtoRawDisInvalidVPIVCIInCells	1.3.6.1.4.1.123.3.54.1.4.1.4	Counter32	read-only	The number of received cells discarded due to invalid VPI/VCI on this interface, since startup.
C32 nncAtmProtoRawOutCells	1.3.6.1.4.1.123.3.54.1.4.1.5	Counter32	read-only	The number of cells transmitted on this interface, since startup.
nncAtmProtoGroups	1.3.6.1.4.1.123.3.54.2
nncAtmProtoCurrGroup	1.3.6.1.4.1.123.3.54.2.1			A collection of objects providing 15 Min current monitoring data for a ATM interface.
nncAtmProtoHistGroup	1.3.6.1.4.1.123.3.54.2.2			A collection of objects providing 15 Min history monitoring data for a ATM interface.
nncAtmProtoTotalGroup	1.3.6.1.4.1.123.3.54.2.3			A collection of objects providing previous 24 hour monitoring data for a ATM interface.
nncAtmProtoRawGroup	1.3.6.1.4.1.123.3.54.2.4			A collection of objects providing raw monitoring data for a ATM interface.
nncAtmProtoCompliances	1.3.6.1.4.1.123.3.54.3
nncAtmProtoCompliance	1.3.6.1.4.1.123.3.54.3.1			The complicance statement for Newbridge SNMP entities which have ATM protocol monitoring data.

RFC description

Newbridge ATM cell layer performance monitoring MIB providing 15-minute and 24-hour statistics per ATM interface.

Start monitoring Newbridge Networks/Alcatel ATM switches/multiplexers 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 NNC-ATM-PROTOSTATISTICS-MIB