SL-SONET-APS-MIB :: slSonetApsLineFailureCodeStatus

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › SL-SONET-APS-MIB › slSonetApsLineFailureCodeStatus

slSonetApsLineFailureCodeStatus

Module: SL-SONET-APS-MIB

OID (symbolic): SL-SONET-APS-MIB::slSonetApsLineFailureCodeStatus

OID (numeric): 1.3.6.1.4.1.4515.1.6.5.1.1.1.16

Node type: OBJECT-TYPE

Type: Bits

Access: read-only

Description: The Sonet APS line failure code status - this is the status of failure encountered by the APS line.

slSonetApsChannelMismatch: trasmitted K1 byte and received K2 byte do not match. slSonetApsProtectionByteFail: It could mean either K1 byte with invalid type of switch request bits was received, or, priority of received K1 byte is lower than the transmitted K1 byte. slSonetApsFEProtectionFailure: Remote end error detected. slSonetApsModeMismatch: Mismatch of Bit 5 of the K2 Byte.

What is slSonetApsLineFailureCodeStatus?

A read-only bitmask reporting specific APS protocol failure conditions per GR-253-CORE: channel mismatch (K1/K2 byte mismatch), protection byte failure (invalid or lower-priority K1 byte received), far-end protection failure, or mode mismatch (K2 byte bit 5 mismatch). An admin uses this to pinpoint exactly which K1/K2 byte-level protocol issue is affecting APS on this line, beyond just knowing a failure occurred.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4515.1.6.5.1.1.1.16
snmpwalk -v2c -c public <target> SL-SONET-APS-MIB::slSonetApsLineFailureCodeStatus

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.4515.1.6.5.1.1.1.16.1
snmpget -v2c -c public <target> SL-SONET-APS-MIB::slSonetApsLineFailureCodeStatus.1

Start monitoring SmartOptics SiteLight SONET optical transport equipment (SONET Automatic Protection Switching status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the SL-SONET-APS-MIB::slSonetApsLineFailureCodeStatus OID value, configure state conditions and alerts, and monitor any SmartOptics SiteLight SONET optical transport equipment (SONET Automatic Protection Switching status) from a single console.

OID Breakdown

Upper-level ancestors (9 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
1.3.6.1.4.1.4515smartopticsSL-NE-MIB
1.3.6.1.4.1.4515.1sitelightSL-NE-MIB
1.3.6.1.4.1.4515.1.6slSonetMibSL-SONET-MIB
Numeric OIDNameModule
1.3.6.1.4.1.4515.1.6.5slSonetApsMibSL-SONET-APS-MIB
1.3.6.1.4.1.4515.1.6.5.1slSonetApsConfigSL-SONET-APS-MIB
1.3.6.1.4.1.4515.1.6.5.1.1slSonetApsConfigTableSL-SONET-APS-MIB
1.3.6.1.4.1.4515.1.6.5.1.1.1slSonetApsConfigEntrySL-SONET-APS-MIB
1.3.6.1.4.1.4515.1.6.5.1.1.1.16slSonetApsLineFailureCodeStatusSL-SONET-APS-MIB