CISCO-DS3-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-DS3-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2002-05-21

Category: Cisco Devices, Network Interfaces

Description: Provides Cisco-specific management objects for DS3/T3 interfaces, supplementing RFC 2496 with additional performance and framing controls.

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-DS3-MIB?

CISCO-DS3-MIB is a Cisco Systems proprietary MIB extending the standard DS3 MIB (RFC 2496) with additional line-configuration and alarm-threshold objects. Its configuration table records line type, AIS-C-bit checking, FEAC validation, out-of-frame criteria, transmitted/expected trace strings, trace alarm, internal equalizer, and near/far-end line-loopback status, while an alarm-configuration table sets near-end/far-end alarm up/down debounce counts and thresholds, statistical-alarm severity, and 15-minute/24-hour thresholds for line-code-violation (LCV) and line-errored-second (LES) counts. As a configuration/performance MIB it lets an administrator tune DS3 alarm debounce and error-rate thresholds to match the carrier's circuit-quality tolerance. It is deployed on Cisco routers with DS3 interfaces. Engineers can download the CISCO-DS3-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-DS3-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 routers (DS3 interfaces)

Monitoring Examples

An administrator checks cds3LCV24HrThreshold and cds3LES24HrThreshold to confirm alarm sensitivity is tuned appropriately before troubleshooting a DS3 circuit generating frequent statistical alarms.

What Can Be Monitored

  • DS3 line configuration and alarm/error thresholds
Imported Objects

From CISCO-SMI

ciscoMgmtOBJECT-IDENTITY

From IF-MIB

ifIndexOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using cds3RcvLOSCount OID:

Select a Cisco router (DS3 interfaces) 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 cds3RcvLOSCount 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 times Loss of Signal was detected with or without integrating to LOS alarm. 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

RFC description

Manages DS3/E3 line configuration, alarms, and performance statistics on Cisco equipment.

Start monitoring Cisco routers (DS3 interfaces) 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-DS3-MIB