Fore-SONET-MIB :: sonetAtmUncorrectableHCSs

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsFore-SONET-MIBsonetAtmUncorrectableHCSs

sonetAtmUncorrectableHCSs

Module: Fore-SONET-MIB

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

OID (numeric): 1.3.6.1.4.1.326.2.2.1.1.4.2.4.1.5

Node type: OBJECT-TYPE

Type: Counter32

Access: read-only

Description: The number of uncorrectable Header Check Sequence (HCS) error events that occurred since the port was reset. The HCS is a CRC-8 calculation over the first 4 octets of the ATM cell header.

What is sonetAtmUncorrectableHCSs?

Counts uncorrectable Header Check Sequence errors on this port since its last reset, meaning the CRC-8 over the cell header failed and could not be automatically corrected, likely causing cell loss. An admin treats increases here as more serious than sonetAtmCorrectableHCSs since these errors are not fixed in hardware.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.326.2.2.1.1.4.2.4.1.5
snmpwalk -v2c -c public <target> Fore-SONET-MIB::sonetAtmUncorrectableHCSs

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.326.2.2.1.1.4.2.4.1.5.1
snmpget -v2c -c public <target> Fore-SONET-MIB::sonetAtmUncorrectableHCSs.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::sonetAtmUncorrectableHCSs 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
1.3.6.1.4.1.326.2.2.1.1.4.2.4sonetAtmTableFore-SONET-MIB
1.3.6.1.4.1.326.2.2.1.1.4.2.4.1sonetAtmEntryFore-SONET-MIB
1.3.6.1.4.1.326.2.2.1.1.4.2.4.1.5sonetAtmUncorrectableHCSsFore-SONET-MIB