CALIX-E7-SELT-LINE-MIB

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Organization: CALIX NETWORKS INC.

Last Updated: 2014-08-07

Category: DSL and Broadband, Vendor: Calix

Description: Manages Single-Ended Line Testing (SELT) diagnostics for DSL subscriber lines on Calix E7 GPON/DSL broadband access equipment.

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What Is CALIX-E7-SELT-LINE-MIB?

CALIX-E7-SELT-LINE-MIB is a Calix Networks enterprise MIB (under the e7 branch, imported from CALIX-PRODUCT-MIB) that exposes Single-Ended Line Test (SELT) diagnostics for xDSL lines on Calix E7 GPON/DSL broadband access platforms. Its e7XdslSeltLineTable, indexed by ifIndex for interfaces with ifType xdslSelt(9), carries upstream/downstream margin and tone-count estimates, capacity-rate estimates, best-fit loop type and length, fit error, and the command/status objects (e7XdslSeltLineCmndConfLdsf, e7XdslSeltLineCmndConfLdsfFailReason) used to force and monitor a Loop Diagnostics (LDSF) test run. Results of a completed test are reported in e7SeltReportStatusTable, keyed by ifIndex and a best-fit index, with round-trip delay/error, attenuation samples at 300kHz/180kHz/1MHz and end-of-range, termination phase, transfer function, and the frequency range covered by the test. Together these tables let a technician remotely characterize a copper loop's length, quality, and reflection profile without a truck roll, which is central to diagnosing DSL sync or rate problems before or after provisioning. It depends on the underlying ifTable entry for the DSL port and on the E7 chassis being a Calix E7 GPON/DSL access platform, and administrators can download the CALIX-E7-SELT-LINE-MIB file to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CALIX-E7-SELT-LINE-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

Calix E7 GPON/DSL broadband access platforms

Monitoring Examples

An operator sets e7XdslSeltLineCmndConfLdsf to force(1) on a subscriber's DSL line, then polls e7XdslSeltLineCmndConfLdsfFailReason until it reports success(2), and reads e7SeltReportStatusTable's e7SeltRoundTripDelay/e7SeltFitError and e7XdslLoopLength; an unusually short estimated loop length paired with a high fit error would suggest a bridged tap or wiring fault rather than simple distance-related attenuation.

What Can Be Monitored

upstream/downstream margin and tone-count estimates
loop type/length and fit-error estimates
SELT test command/status (LDSF force and fail reason)
round-trip delay/error and multi-frequency attenuation samples
SELT report validity and frequency range covered

Imported Objects

From CALIX-PRODUCT-MIB

e7	OBJECT-IDENTITY
e7Modules	OBJECT-IDENTITY

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32
transmission

From SNMPv2-TC

TruthValue
VariablePointer

How to Use in IPNetwork Monitor

Example using e7XdslUsMargin OID:

Select a Calix E7 GPON/DSL broadband access platform 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 e7XdslUsMargin 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. It reports the upstream margin measured by the line's Single-Ended Line Test (SELT). 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the margin drops below the level expected for a healthy line, since low margin often precedes line errors or a lost sync. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
e7SeltTestDiags	1.3.6.1.4.1.6321.1.2.2.9			This MIB Module is for E7 xDSL SELT diagnostics.
e7XdslSeltLineTable	1.3.6.1.4.1.6321.1.2.2.9.1		not-accessible	The table xdslSeltLineTable contains configuration, command and status parameters of the xDSL line. Several objects in this table MUST be maintained in a persistent manner.
e7XdslSeltLineEntry	1.3.6.1.4.1.6321.1.2.2.9.1.1		not-accessible	The index of this table is an interface index where the interface has an ifType of xdslSelt(9).
INT e7XdslUsMarginEx	1.3.6.1.4.1.6321.1.2.2.9.1.1.1	INTEGER	read-only	Selt US Margin.
INT e7XdslDsMargin	1.3.6.1.4.1.6321.1.2.2.9.1.1.2	INTEGER	read-only	Selt DS Margin.
INT e7XdslUsNumTones	1.3.6.1.4.1.6321.1.2.2.9.1.1.3	INTEGER	read-only	Selt US Number of Tones.
INT e7XdslDsNumTones	1.3.6.1.4.1.6321.1.2.2.9.1.1.4	INTEGER	read-only	Selt DS Number of Tones.
INT e7XdslUsRate	1.3.6.1.4.1.6321.1.2.2.9.1.1.5	INTEGER	read-only	Selt US capacity estimate rate.
INT e7XdslDsRate	1.3.6.1.4.1.6321.1.2.2.9.1.1.6	INTEGER	read-only	Selt DS capacity estimate rate.
INT e7XdslBestFitIdx	1.3.6.1.4.1.6321.1.2.2.9.1.1.7	INTEGER	read-only	Best fit/match reflection report index.
INT e7XdslLoopType	1.3.6.1.4.1.6321.1.2.2.9.1.1.8	INTEGER	read-only	Loop Type 0 = Awg 24, 1 = Awg 26.
INT e7XdslLoopLength	1.3.6.1.4.1.6321.1.2.2.9.1.1.9	INTEGER	read-only	Loop Length Estimate in meters.
INT e7XdslFitError	1.3.6.1.4.1.6321.1.2.2.9.1.1.10	INTEGER	read-only	Best Fit Error
INT e7XdslSeltLineCmndConfLdsfFailReason	1.3.6.1.4.1.6321.1.2.2.9.1.1.11	INTEGER	read-only	The status of the recent occasion the Loop diagnostics mode forced (LDSF) was issued for the associated line. Possible values are: none(1) - The default value in case LDSF was never requested for the associated line. success(2) - The recent command completed successfully. inProgress(3) - The Loop Diagnostics process is in progress. cannotRun(4) - The NE cannot initiate the command, due to a non-specific reason. aborted(5) - The Loop Diagnostics process aborted. failed(6) - The Loop Diagnostics process failed. tableFull(7) - The NE cannot initiate the command, due to reaching the maximum number of rows in the results table. noResources(8) - The NE cannot initiate the command, due to lack of internal memory resources.
INT e7XdslSeltLineCmndConfLdsf	1.3.6.1.4.1.6321.1.2.2.9.1.1.12	INTEGER	read-write	Loop diagnostics mode forced (LDSF) for Selt Test. Defines whether the line should be forced into the Selt loop diagnostics mode by the near-end ATU on this line.
e7SeltReportStatusTable	1.3.6.1.4.1.6321.1.2.2.9.2		not-accessible	The table SeltReportStatusTable contains status parameters for SELT test reflection report. The parameters in this table MUST be updated after a loop diagnostic procedure completion
e7SeltReportStatusEntry	1.3.6.1.4.1.6321.1.2.2.9.2.1		not-accessible	The table SeltReportStatusEntry contains status parameters of the SELT test reflection report. The index of this table is an interface index.
INT e7SeltBestFitIdx	1.3.6.1.4.1.6321.1.2.2.9.2.1.1	INTEGER	read-only	SELT test best fit index. The valid values are 0, 1, 2.
INT e7SeltReportValid	1.3.6.1.4.1.6321.1.2.2.9.2.1.2	INTEGER	read-only	SELT test report valid state values. 1 = valid and 0 = not-valid
OCT e7SeltRoundTripDelay	1.3.6.1.4.1.6321.1.2.2.9.2.1.3	OCTET STRING	read-only	SELT test round trip delay.
OCT e7SeltRoundTripError	1.3.6.1.4.1.6321.1.2.2.9.2.1.4	OCTET STRING	read-only	SELT test round trip error.
OCT e7SeltAttn300KHz	1.3.6.1.4.1.6321.1.2.2.9.2.1.5	OCTET STRING	read-only	SELT test attenuation signal 300Khz.
OCT e7SeltAttn180KHz	1.3.6.1.4.1.6321.1.2.2.9.2.1.6	OCTET STRING	read-only	SELT test attenuation signal 180Khz.
OCT e7SeltAttn1MHz	1.3.6.1.4.1.6321.1.2.2.9.2.1.7	OCTET STRING	read-only	SELT test attenuation signal 1 MHz.
OCT e7SeltAttnEndOfRange	1.3.6.1.4.1.6321.1.2.2.9.2.1.8	OCTET STRING	read-only	SELT test attenuation end of range.
OCT e7SeltFitError	1.3.6.1.4.1.6321.1.2.2.9.2.1.9	OCTET STRING	read-only	SELT test fit error.
OCT e7SeltTerminationPhase	1.3.6.1.4.1.6321.1.2.2.9.2.1.10	OCTET STRING	read-only	SELT test termination phase.
OCT e7SeltTransferFunction	1.3.6.1.4.1.6321.1.2.2.9.2.1.11	OCTET STRING	read-only	SELT test transfer function.
INT e7SeltRangeStart	1.3.6.1.4.1.6321.1.2.2.9.2.1.12	INTEGER	read-only	SELT test range start.
INT e7SeltRangeStop	1.3.6.1.4.1.6321.1.2.2.9.2.1.13	INTEGER	read-only	SELT test range stop.

RFC description

Manages VDSL SELT (Single-Ended Line Testing) diagnostics for Calix E7 xDSL lines, including line margins, data rates, and loop characteristics.

Start monitoring Calix E7 GPON/DSL broadband access platforms 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 CALIX-E7-SELT-LINE-MIB