CISCO-IDSL-LINE-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-IDSL-LINE-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2000-01-20

Category: Cisco Devices, DSL and Broadband

Description: Provides management objects for monitoring and configuring IDSL (ISDN-based DSL) line parameters and performance on Cisco DSL equipment.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is CISCO-IDSL-LINE-MIB?

This is a Cisco enterprise MIB for managing IDSL (ISDN Digital Subscriber Line) interfaces, modeled on the structure of the IETF ADSL-LINE-MIB (RFC 2662) but for Cisco's IDSL line cards. It exposes per-line configuration and alarm profiles (cIdslLineConfProfile, cIdslLineAlarmConfProfile), ITU-C physical inventory data such as serial number, vendor ID, and firmware version (cIdslItucInvSerialNumber, cIdslItucInvVendorId, cIdslItucInvVersionNumber), and line status and performance counters. It is used heavily for monitoring hardware and firmware status of IDSL line units—line status (cIdslItucStatus), performance data over time (cIdslItucPerfDataTable), and inventory/version information—plus it generates SNMP notifications (ciscoIdslLineMIBNotifications) for line alarm conditions. It explicitly parallels and can be used alongside the standard ADSL-LINE-MIB, sharing profile-table conventions, though its tables don't necessarily extend ADSL-LINE-MIB tables directly. It is deployed on Cisco access routers and DSL aggregation equipment providing ISDN-based DSL service to subscribers. Network engineers evaluating or troubleshooting this functionality can download the CISCO-IDSL-LINE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-IDSL-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

  • Cisco IDSL line cards / DSL access equipment

Monitoring Examples

An admin would poll cIdslLineTable/cIdslLineEntry for each line's cIdslLineSpecific and profile assignment, then check cIdslItucStatus and cIdslItucPerfDataTable for error seconds or line-quality degradation. A cIdslItucInvVersionNumber mismatch across line cards could indicate outdated firmware, while a status change combined with a notification from ciscoIdslLineMIBNotifications would flag a line going into alarm.

What Can Be Monitored

  • IDSL line status
  • line performance/error counters
  • line configuration and alarm profiles
  • line unit vendor/serial/firmware version
Imported Objects

From ADSL-LINE-MIB

AdslLineProfileName
adslLineConfProfileNameOBJECT-TYPE

From CISCO-SMI

ciscoMgmtOBJECT-IDENTITY

From IF-MIB

InterfaceIndex
ifIndexOBJECT-TYPE

From PerfHist-TC-MIB

PerfCurrentCount
PerfIntervalCount

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue
VariablePointer

How to Use in IPNetwork Monitor

Example using cIdslItucPerfCVs OID:

Select a Cisco IDSL line cards / DSL access equipment 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 cIdslItucPerfCVs 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. This object specifies the number of coding violations experienced by the ITU-C since agent 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 Counter32-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

RFC description

Monitors IDSL (ISDN Digital Subscriber Line) interface performance metrics and line profile configuration.

Start monitoring Cisco IDSL line cards / DSL access equipment 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 CISCO-IDSL-LINE-MIB