ERI-DNX-PERF-MONT-MIB

All MIBs › ERI-DNX-PERF-MONT-MIB

Organization: Eastern Research, Inc.

Last Updated: 2002-04-11

Category: Domain: WAN/TDM, Vendor: ERI

Description: Eastern Research Inc. DNX performance monitoring MIB providing ESF and G.826 statistics for DSx1 links on DNX devices.

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What Is ERI-DNX-PERF-MONT-MIB?

ERI-DNX-PERF-MONT-MIB is an Eastern Research Inc. (ERI) enterprise MIB that provides performance monitoring for DS1/T1 links on DNX digital cross-connect devices, following ESF (Extended Super Frame) and ITU-T G.826 statistics conventions. It exposes current-interval performance counters for DSx1 circuits, covering line-quality metrics such as errored seconds, unavailable seconds, severely errored seconds, bursty errored seconds, and loss-of-frame events. Its role in hardware/software status monitoring is centered on telecom link quality and fault detection rather than general system health, letting an operator assess whether a DS1 span is degraded, framing-impaired, or currently unavailable. It explicitly builds on standard DS1/E1 performance-monitoring conventions (ESF and G.826), paralleling the structure of the IETF RFC 1406/2495 DS1 MIB. It is deployed on ERI DNX digital cross-connect systems used by telecom carriers to manage and groom DS1 circuits. Engineers can download the ERI-DNX-PERF-MONT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ERI-DNX-PERF-MONT-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

Eastern Research Inc. (ERI) DNX digital cross-connect system

Monitoring Examples

An operator would poll dsx1EsfCurrTable/dsx1EsfCurrEntry rows, indexed by dsx1EsfCurrLinkAddr and dsx1EsfCurrResrcId, to read dsx1EsfCurrESs (errored seconds), dsx1EsfCurrSESs (severely errored seconds), and dsx1EsfCurrUASs (unavailable seconds) for the current 15-minute or 24-hour interval. A rising dsx1EsfCurrLOFs count alongside dsx1EsfCurrBESs would indicate a DS1 link experiencing framing loss and bursty errors, pointing to a physical-layer or clocking problem on that span. dsx1EsfCurrStatus reflects whether the interval's data is valid, complete, or affected by a counter reset, which matters when comparing successive polling intervals.

What Can Be Monitored

DS1 errored seconds
severely errored seconds
unavailable seconds
bursty errored seconds
loss-of-frame events
current interval validity status

Imported Objects

From ERI-DNX-SMC-MIB

LinkPortAddress
dnx	OBJECT-IDENTITY

From ERI-ROOT-SMI

eriMibs

OBJECT-IDENTITY

From SNMPv2-SMI

Gauge32
Integer32
MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using dsx1G826ESs OID:

Select an Eastern Research Inc. (ERI) DNX digital cross-connect/multiplexer (DS1/T1 performance monitoring) 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 dsx1G826ESs into the Find box to locate it in the OID tree, then select it and click OK. This is the total number of errored seconds that have occurred since the link has been up or since the G.826 counters have been reset. 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 Gauge32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
performanceMonitoring	1.3.6.1.4.1.644.2.4.4
dsx1Esf	1.3.6.1.4.1.644.2.4.4.1
dsx1EsfCurrTable	1.3.6.1.4.1.644.2.4.4.1.1		not-accessible	This is the DS1/E1 ESF Current Statistics table which consists of an entry for each DS1 link in the system that is configured for T1 ESF lines. This table provides the counters for the current 15 minute time interval.
dsx1EsfCurrEntry	1.3.6.1.4.1.644.2.4.4.1.1.1		not-accessible	The conceptual row of the DS1/E1 ESF Statistics table. A row in this table cannot be added, deleted, or modified directly. Rows may be removed or added by configuring the DS1 line type via the appropriate Device Provisioning table.
ADR dsx1EsfCurrLinkAddr	1.3.6.1.4.1.644.2.4.4.1.1.1.1	LinkPortAddress	read-only	This number uniquely identifies an DS1/E1 link resource. This number will be used throughout the system to identify a unique link. The format is represented using an IP address syntax (4 byte string). Note that the maximum valid link number will vary depending on the specified carrier and framing options. For example, an octal T1/E1 device has 8 DS1 links however the DS3 has 28 DS1 links. The 1st byte is reserved for future Nest Number use The 2nd byte represents the Slot Number (1-11) The 3rd byte represents the Link Number (1-84) The 4th byte is reserved for future use
I32 dsx1EsfCurrResrcId	1.3.6.1.4.1.644.2.4.4.1.1.1.2	Integer32	read-only	Uniquely identifies a link in the system. This number is provided as key to allow the manager to map this entry to a corresponding Resource Table entry.
G32 dsx1EsfCurrESs	1.3.6.1.4.1.644.2.4.4.1.1.1.3	Gauge32	read-only	This is the number of errored seconds that have occurred on the link during the current interval. This is not incremented during an Unavailable Second. For ESF links an Errored Second is a second with the occurrence of a Loss of Frame or a CRC6 error in a one-second period.
G32 dsx1EsfCurrUASs	1.3.6.1.4.1.644.2.4.4.1.1.1.4	Gauge32	read-only	This is the number of failed seconds (UAS) that have occurred on the link during the current interval. Unavailable Seconds (UAS) are calculated by counting the number of seconds that the interface is unavailable. Each second period during the occurrence of a Failed Signal State (ten consecutive SES) is known as a failed/unavailable second.
G32 dsx1EsfCurrSESs	1.3.6.1.4.1.644.2.4.4.1.1.1.5	Gauge32	read-only	This is the number of severely errored seconds that have occurred on the link during the current interval. Controlled slips are not included in this parameter. This is not incremented during an Unavailable Second. A Severely Errored Second for ESF signals is a second period with 320 or more CRC6 errors.
G32 dsx1EsfCurrBESs	1.3.6.1.4.1.644.2.4.4.1.1.1.6	Gauge32	read-only	This is the number of bursty errored seconds that have occurred on the T1 link during the current interval. This is not incremented during an Unavailable Second and applies to ESF signals only. A Bursty Errored Second is a second period with more than one but less than 320 CRC6 errors.
G32 dsx1EsfCurrLOFs	1.3.6.1.4.1.644.2.4.4.1.1.1.7	Gauge32	read-only	This is the number of loss of frames that have occurred on the link during the current interval. A loss of frame occurs when either network equipment or the DTE senses errors in the framing pattern. Depending upon the equipment, this occurs when any 2 of 4, 2 of 5, or 3 of 5 consecutive terminal framing bits received contain bit errors in the framing pattern.
G32 dsx1EsfCurrSeconds	1.3.6.1.4.1.644.2.4.4.1.1.1.8	Gauge32	read-only	The total number of seconds in the current interval.
G32 dsx1EsfCurrIntervals	1.3.6.1.4.1.644.2.4.4.1.1.1.9	Gauge32	read-only	The total number of valid 15 minute intervals counted since the link has been up and running.
STR dsx1EsfCurrStatus	1.3.6.1.4.1.644.2.4.4.1.1.1.10	DisplayString	read-only	This defines the status of the DS1/E1 link using an 8 character code which can contain numbers or letters. The codes are interpreted as follows: character #1 - 'F' or zero where 'F' indicates Failed Signal Status (FSS) if 'U' or 'L' are present. character #2 - 'U' or zero where 'U' indicates an unavailable signal state. character #3 through #6 are always zero. character #7 - 'L' or zero where 'L' indicates that the T1 line is in loop. character #8 - always zero.
dsx1Esf24HrTable	1.3.6.1.4.1.644.2.4.4.1.2		not-accessible	This is the DS1/E1 24 Hour ESF Statistics table which consists of an entry for each DS1/E1 link in the system that is configured for T1 ESF lines. This table provides the total counters accumulated for last 24 hour period.
dsx1Esf24HrEntry	1.3.6.1.4.1.644.2.4.4.1.2.1		not-accessible	The conceptual row of the DS1/E1 24 Hour ESF Statistics table. A row in this table cannot be added, deleted, or modified directly. Rows may be removed or added by configuring the DS1 line type via the appropriate Device Provisioning table.
ADR dsx1Esf24HrLinkAddr	1.3.6.1.4.1.644.2.4.4.1.2.1.1	LinkPortAddress	read-only	This number uniquely identifies an DS1/E1 link resource. This number will be used throughout the system to identify a unique link. The format is represented using an IP address syntax (4 byte string). Note that the maximum valid link number will vary depending on the specified carrier and framing options. For example, an octal T1/E1 device has 8 DS1 links but the DS3 has 28 DS1 links. The 1st byte is reserved for future Nest Number use The 2nd byte represents the Slot Number (1-11) The 3rd byte represents the Link Number (1-84) The 4th byte is reserved for future use
I32 dsx1Esf24HrResrcId	1.3.6.1.4.1.644.2.4.4.1.2.1.2	Integer32	read-only	Uniquely identifies a link in the system. This number is provided as key to allow the manager to map this entry to a corresponding Resource Table entry.
G32 dsx1Esf24HrESs	1.3.6.1.4.1.644.2.4.4.1.2.1.3	Gauge32	read-only	This is the number of errored seconds that have occurred on the link during the past 24 hours.
G32 dsx1Esf24HrUASs	1.3.6.1.4.1.644.2.4.4.1.2.1.4	Gauge32	read-only	This is the number of Unavailable Seconds (UAS) that have occurred on the T1 link during the past 24 hours.
G32 dsx1Esf24HrSESs	1.3.6.1.4.1.644.2.4.4.1.2.1.5	Gauge32	read-only	This is the number of severely errored seconds that have occurred on the T1 link during the past 24 hours.
G32 dsx1Esf24HrBESs	1.3.6.1.4.1.644.2.4.4.1.2.1.6	Gauge32	read-only	This is the number of bursty errored seconds that have occurred on the T1 link during the past 24 hours.
G32 dsx1Esf24HrLOFs	1.3.6.1.4.1.644.2.4.4.1.2.1.7	Gauge32	read-only	This is the number of loss of frames that have occurred on the T1 link during the past 24 hours.
dsx1Esf96RegTable	1.3.6.1.4.1.644.2.4.4.1.3		not-accessible	This table is the ESF 96 Registers Table. It displays the 96 15 minute performance registers for each link on a card
dsx1Esf96RegEntry	1.3.6.1.4.1.644.2.4.4.1.3.1		not-accessible	The conceptual row of the DS1/E1 ESF 96 Registers table. A row in this table cannot be added, deleted, or modified directly. Rows may be removed or added by configuring the DS1 line type via the appropriate Device Provisioning table.
ADR dsx1Esf96RegLinkAddr	1.3.6.1.4.1.644.2.4.4.1.3.1.1	LinkPortAddress	read-only	Uniquely identifies a link in the system. This number is provided as key to allow the manager to map this entry to a corresponding Resource Table entry.
I32 dsx1Esf96RegInterval	1.3.6.1.4.1.644.2.4.4.1.3.1.2	Integer32	read-only	Specifies the interval Number On a particular link
G32 dsx1Esf96RegESs	1.3.6.1.4.1.644.2.4.4.1.3.1.3	Gauge32	read-only	The number of Errored Seconds for a particular interval on a particular link
G32 dsx1Esf96RegUASs	1.3.6.1.4.1.644.2.4.4.1.3.1.4	Gauge32	read-only	The number of Unavailable Seconds for a particular interval on a particular link
G32 dsx1Esf96RegSESs	1.3.6.1.4.1.644.2.4.4.1.3.1.5	Gauge32	read-only	The number of Severely Errored Seconds for a particular interval on a particular link
G32 dsx1Esf96RegBESs	1.3.6.1.4.1.644.2.4.4.1.3.1.6	Gauge32	read-only	The number of Bursty Errored Seconds for a particular interval on a particular link
dsx1G826	1.3.6.1.4.1.644.2.4.4.2
dsx1G826Table	1.3.6.1.4.1.644.2.4.4.2.1		not-accessible	This is the DS1/E1 G.826 Statistics table which consists of an entry for each DS1/E1 link in the system. This table provides the total counters accumulated since the link has been up or since the last time the counts were cleared. The counters are calculated in accordance with the ITU-T G.826 Error performance parameters, November 1993.
dsx1G826Entry	1.3.6.1.4.1.644.2.4.4.2.1.1		not-accessible	The conceptual row of the DS1/E1 G.826 Statistics table. A row in this table cannot be added or deleted directly but the counter time period can be reset to zero. Rows may be removed or added by configuring the DS1/E1 line type via the appropriate Device Provisioning tables.
ADR dsx1G826LinkAddr	1.3.6.1.4.1.644.2.4.4.2.1.1.1	LinkPortAddress	read-only	This number uniquely identifies an DS1/E1 link resource. This number will be used throughout the system to identify a unique link. The format is represented using an IP address syntax (4 byte string). Note that the maximum valid link number will vary depending on the specified carrier and framing options. For example, an octal T1/E1 device has 8 DS1 links but the DS3 has 28 DS1 links. The 1st byte is reserved for future Nest Number use The 2nd byte represents the Slot Number (1-11) The 3rd byte represents the Link Number (1-84) The 4th byte is reserved for future use
I32 dsx1G826ResrcId	1.3.6.1.4.1.644.2.4.4.2.1.1.2	Integer32	read-only	Uniquely identifies a link in the system. This number is provided as key to allow the manager to map this entry to a corresponding Resource Table entry.
I32 dsx1G826TotalTime	1.3.6.1.4.1.644.2.4.4.2.1.1.3	Integer32	read-write	This the total number of seconds the G.826 data has been collected. Resetting this to zero will clear the counters for specific link.
G32 dsx1G826ESsEx	1.3.6.1.4.1.644.2.4.4.2.1.1.4	Gauge32	read-only	This is the total number of errored seconds that have occurred since the link has been up or since the G.826 counters have been reset. An Errored Second for G.826 is a one second period with one or more errored blocks or at least one defect.
G32 dsx1G826ErrFSs	1.3.6.1.4.1.644.2.4.4.2.1.1.5	Gauge32	read-only	This is the total number of error free seconds since the link has been up or since the G.826 counters have been reset.
G32 dsx1G826SESs	1.3.6.1.4.1.644.2.4.4.2.1.1.6	Gauge32	read-only	This is the total number of severely errored seconds that have occurred since the link has been up or since the G.826 counters have been reset. A Severely Errored Second for G.826 is a one second period that contains 30% or more errored blocks OR at least one defect. This is a subset of ES.
G32 dsx1G826ConsecSESs	1.3.6.1.4.1.644.2.4.4.2.1.1.7	Gauge32	read-only	This is the total number of continuous occurrences of SES, in a one second intervals, since the link has been up or since the G.826 counters have been reset.
G32 dsx1G826ConsecErrFSs	1.3.6.1.4.1.644.2.4.4.2.1.1.8	Gauge32	read-only	This is the total number of consecutive seconds one second period intervals that did not have defects or errors since the link has been up or since the G.826 counters have been reset.
G32 dsx1G826BGErrBlocks	1.3.6.1.4.1.644.2.4.4.2.1.1.9	Gauge32	read-only	This is the total number of background errored blocks that have occurred since the link has been up or since the G.826 counters have been reset. A Background Block Error for G.826 is an errored block not occurring as part of an SES.
STR dsx1G826ESRatio	1.3.6.1.4.1.644.2.4.4.2.1.1.10	DisplayString	read-only	This is the ratio of ES to total seconds in available time during a fixed measurement interval rounded to 2 decimals.
STR dsx1G826SESRatio	1.3.6.1.4.1.644.2.4.4.2.1.1.11	DisplayString	read-only	This is the ratio of SES to total seconds in available time during a fixed measurement interval rounded to 2 decimals.
STR dsx1G826BgBERRatio	1.3.6.1.4.1.644.2.4.4.2.1.1.12	DisplayString	read-only	This is the ratio of background block errors to total blocks in available time during a fixed measurement interval rounded to 2 decimals. This total block count excludes all blocks during SES.
G32 dsx1G826UASs	1.3.6.1.4.1.644.2.4.4.2.1.1.13	Gauge32	read-only	This is the total number of Unavailable Seconds (UAS) that have occurred since the link has been up or since the G.826 counters have been reset.
eriDNXLinkPMStatsMIB	1.3.6.1.4.1.644.3.7			The ERI Enterprise MIB Module for the DNX DSx1 Performance Monitoring.

RFC description

Monitors DS1/E1 performance statistics on Eastern Research DNX devices including ESF and G.826 metrics.

Start monitoring Eastern Research Inc. (ERI) DNX digital cross-connect/multiplexer (DS1/T1 performance monitoring) 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 ERI-DNX-PERF-MONT-MIB