Fore-SONET-MIB :: sonetSectionLOFs

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsFore-SONET-MIBsonetSectionLOFs

sonetSectionLOFs

Module: Fore-SONET-MIB

OID (symbolic): Fore-SONET-MIB::sonetSectionLOFs

OID (numeric): 1.3.6.1.4.1.326.2.2.1.1.4.2.1.1.6

Node type: OBJECT-TYPE

Type: Counter32

Access: read-only

Description: The number of seconds in which Loss Of Frame (LOF) has occurred. A LOF is declared when an out-of-frame (OOF) condition persists for 3ms. The LOF is cleared when an in-frame condition persists for 3ms. While in-frame the framing bytes (A1, A2) in each frame are compared against the expected pattern. Out-of-frame is declared when four consecutive frames containing one or more framing pattern errors have been received.

What is sonetSectionLOFs?

Counts the number of seconds during which this port experienced Loss Of Frame, declared when an out-of-frame condition persists for 3ms and cleared after 3ms back in-frame. An admin watches this counter for framing instability, often indicating a clocking or cabling problem distinct from a full signal loss.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.326.2.2.1.1.4.2.1.1.6
snmpwalk -v2c -c public <target> Fore-SONET-MIB::sonetSectionLOFs

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.326.2.2.1.1.4.2.1.1.6.1
snmpget -v2c -c public <target> Fore-SONET-MIB::sonetSectionLOFs.1

Start monitoring Fore Systems (later Marconi) ForeRunner ATM switch with SONET/SDH port modules with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the Fore-SONET-MIB::sonetSectionLOFs OID value, configure state conditions and alerts, and monitor any Fore Systems (later Marconi) ForeRunner ATM switch with SONET/SDH port modules from a single console.

OID Breakdown

Upper-level ancestors (11 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.326marconiES1000-MIB
1.3.6.1.4.1.326.2systemsES1000-MIB
1.3.6.1.4.1.326.2.2atmSwitchFore-Common-MIB
1.3.6.1.4.1.326.2.2.1hardwareFore-Common-MIB
1.3.6.1.4.1.326.2.2.1.1asxFore-Common-MIB
Numeric OIDNameModule
1.3.6.1.4.1.326.2.2.1.1.4foreSonetModuleFore-SONET-MIB
1.3.6.1.4.1.326.2.2.1.1.4.2sonetStatsGroupFore-SONET-MIB
1.3.6.1.4.1.326.2.2.1.1.4.2.1sonetSectionTableFore-SONET-MIB
1.3.6.1.4.1.326.2.2.1.1.4.2.1.1sonetSectionEntryFore-SONET-MIB
1.3.6.1.4.1.326.2.2.1.1.4.2.1.1.6sonetSectionLOFsFore-SONET-MIB