All MIBs › NMS-EPON-ONU-IF-TRAP
Description: Trap MIB for NMS EPON ONU UNI interface operational status changes on NMS EPON OLT/ONU equipment
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What Is NMS-EPON-ONU-IF-TRAP?
NMS-EPON-ONU-IF-TRAP is a vendor-specific SNMP trap (notification) MIB used with EPON (Ethernet Passive Optical Network) systems, defining alerts related to ONU (Optical Network Unit) interface state changes on OLT/ONU equipment. Rather than exposing polled counters or tables, it carries fault and status-change data, specifically notifications fired when a UNI (user-network interface) port on an ONU transitions up or down. This makes it primarily useful for monitoring hardware/link status on the device: it lets an NMS detect when a subscriber-facing port on an optical network unit goes offline or comes back online, which is a proxy for physical layer or hardware health. It likely depends on or complements a broader EPON MIB suite (OLT/ONU management MIBs) and standard IF-MIB conventions for interface indexing. Typical deployment is in FTTH/EPON access networks where a central NMS receives these traps from OLTs to raise alarms about individual subscriber ONU port outages. Network engineers evaluating or troubleshooting this functionality can download the NMS-EPON-ONU-IF-TRAP file directly to load it into their MIB browser.
IPNetwork Monitor allows you to monitor SNMP objects defined in NMS-EPON-ONU-IF-TRAP. 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
- EPON OLT
- EPON ONU (Optical Network Unit)
Monitoring Examples
Because sample_objects for this MIB were not available, no runtime table/object names can be cited; this module appears to define only notification (trap) PDUs rather than a polled data model. In practice an NMS would configure the OLT to send this trap whenever an ONU UNI interface's operational status flips, and receiving repeated traps for the same ONU would indicate a flapping or failing physical port. Without object definitions to poll, ongoing state must be confirmed via the referenced ONU/OLT status MIB rather than this trap module alone.
Imported Objects
From NMS-EPON-LLID
| llidIfIndex | OBJECT-TYPE |
From NMS-EPON-ONU
| onuID | OBJECT-TYPE |
| onuIfSequenceNo | OBJECT-TYPE |
| onuUniIfOperStatus | OBJECT-TYPE |
From NMS-SMI
| nmsEPONGroup | OBJECT-IDENTITY |
From RFC1213-MIB
| ifDescr |
From SNMPv2-CONF
| MODULE-COMPLIANCE | |
| NOTIFICATION-GROUP | |
| OBJECT-GROUP |
From SNMPv2-SMI
| Integer32 | |
| MODULE-IDENTITY | |
| NOTIFICATION-TYPE | |
| OBJECT-TYPE | |
| Unsigned32 |
OIDs
RFC description
SNMP trap notifications for EPON ONU interface status changes, monitoring Ethernet Passive Optical Network optical network unit interfaces.
Start monitoring NMS Communications EPON OLT/ONU (interface state-change traps) 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.