CERENT-MSDWDM-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsCERENT-MSDWDM-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2003-02-15

Category: Optical and WDM, Vendor: Cisco ONS/Cerent

Description: Manages multi-service DWDM (Dense Wavelength Division Multiplexing) configuration and optical channel status on Cisco/Cerent ONS equipment.

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What Is CERENT-MSDWDM-MIB?

CERENT-MSDWDM-MIB is a vendor-specific MIB from Cisco (originally Cerent) for ONS optical transport platforms, covering multi-service DWDM (Dense Wavelength Division Multiplexing) optical interface configuration and performance. It exposes physical-layer interface configuration (cMsDwdmIfConfigTable/cMsDwdmIfConfigEntry) including protocol, data rate, loopback state, wavelength, and OTN (G.709)/FEC status, plus separate groups for OTN and FEC performance statistics over current/previous 15-minute and daily intervals. Its monitoring value is squarely hardware status of the optical transport interface: cMsDwdmIfConfigOtnStatus and cMsDwdmIfConfigFECStatus indicate whether OTN framing and forward error correction are functioning correctly on a wavelength channel, while the OTN/FEC valid-intervals objects (cMsDwdmIfOTNValidIntervals, cMsDwdmIfFECValidIntervals) reveal whether error-correction is actively correcting bit errors, which flags degrading optical signal quality. As stated in the module description, this MIB relies on ITU-T G.709 (OTN) standards for its framing and error-correction concepts. It is deployed on Cisco ONS DWDM optical transport chassis in carrier and metro/long-haul optical networks. Engineers can download the CERENT-MSDWDM-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CERENT-MSDWDM-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 ONS DWDM optical transport platform (formerly Cerent)

Monitoring Examples

An operator would poll cMsDwdmIfConfigTable/cMsDwdmIfConfigEntry to confirm cMsDwdmIfConfigWavelength and cMsDwdmIfConfigDataRate match the intended provisioning, then check cMsDwdmIfConfigOtnStatus and cMsDwdmIfConfigFECStatus to verify OTN framing and forward error correction are locked and functioning. A rising trend in cMsDwdmIfFECValidIntervals corrected-error counts relative to cMsDwdmIfOpticsValidIntervals would reveal a degrading optical wavelength channel (e.g., due to fiber attenuation or amplifier drift) before it escalates into a hard service outage, and cMsDwdmIfConfigLoopback would show whether a port has inadvertently been left in a test loopback state.

What Can Be Monitored

  • wavelength/data rate configuration
  • OTN (G.709) framing status
  • forward error correction (FEC) status
  • FEC/OTN performance interval statistics
  • loopback state
Imported Objects

From CERENT-GLOBAL-REGISTRY

cerentGenericOBJECT-IDENTITY
cerentModulesOBJECT-IDENTITY
cerentRequirementsOBJECT-IDENTITY

From CERENT-TC

CerentPeriod

From IF-MIB

ifIndexOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using cMsDwdmOtnCurrentFC OID:

Select a Cisco ONS DWDM optical transport platform (formerly Cerent) 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 cMsDwdmOtnCurrentFC 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 counter associated with the number of failure counts encountered on this interface in the current interval. 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

Dense wavelength division multiplexing (DWDM) management for Cisco Cerent optical switches, monitoring OTN and FEC performance.

Start monitoring Cisco ONS DWDM optical transport platforms (formerly Cerent) 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 CERENT-MSDWDM-MIB