NBS-OTNPM-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › NBS-OTNPM-MIB

Organization: NBS

Last Updated: 2014-01-23

Category: Optical Networking

Description: Monitors OTN performance metrics including errored seconds, severely errored seconds, and unavailable seconds on NBS gear.

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 NBS-OTNPM-MIB?

NBS-OTNPM-MIB is an NBS optical transport equipment MIB for Optical Transport Network (OTN) performance monitoring, tracking standard transmission quality statistics such as errored seconds (ES), severely errored seconds (SES), and background block errors (BBE), as its module description confirms ("OTN Performance Monitoring and user-controlled statistics"). It exposes a configurable-threshold table (nbsOtnpmThresholdsTable), keyed by interface (nbsOtnpmThresholdsIfIndex), monitoring interval, and scope, with threshold values for Es, EsrSig/EsrExp (signaled/expected errored-second ratios), Ses, SesrSig/SesrExp, and Bbe. This is a performance/fault MIB focused on physical-layer and framing quality of optical links — administrators monitor these error-second and block-error counters against configured thresholds to detect degrading fiber links, signal quality issues, or optical equipment faults before they escalate to service-affecting outages. It builds on standard OTN performance-monitoring parameter definitions (ES/SES/BBE terminology) common across optical transport MIBs, and likely depends on interface-index conventions for interface identification. It is deployed on NBS optical transport/DWDM chassis equipment carrying OTN-framed traffic. Engineers can download the NBS-OTNPM-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in NBS-OTNPM-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

  • NBS optical transport / OTN chassis equipment

Monitoring Examples

An operator polls nbsOtnpmThresholdsTable (indexed by nbsOtnpmThresholdsIfIndex and nbsOtnpmThresholdsInterval) to compare live Es and Ses counts against the configured nbsOtnpmThresholdsEsrSig/EsrExp and Sesr thresholds for a given optical interface; a link whose errored-second count regularly exceeds its threshold signals a degrading optical path (e.g., fiber attenuation or a failing transceiver) needing preventive maintenance before it triggers a hard outage.

What Can Be Monitored

  • errored seconds (ES)
  • severely errored seconds (SES)
  • background block errors (BBE)
  • per-interface performance thresholds
  • monitoring interval/scope configuration
Imported Objects

From IF-MIB

InterfaceIndex
ifAliasOBJECT-TYPE

From NBS-MIB

Unsigned64
WritableU64
nbsOBJECT-IDENTITY

From SNMPv2-SMI

Counter32
Counter64
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using nbsOtnpmRunningEs OID:

Select an NBS optical transport/OTN chassis equipment (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 nbsOtnpmRunningEs 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 Errored Seconds (ES) since protocol configuration. 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

OTN performance monitoring and statistics MIB, tracking optical transport network alarms and performance thresholds.

Start monitoring NBS optical transport/OTN chassis equipment (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 NBS-OTNPM-MIB