CISCO-SONET-MIB :: csApsProtectionIndex

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-SONET-MIBcsApsProtectionIndex

csApsProtectionIndex

Module: CISCO-SONET-MIB

OID (symbolic): CISCO-SONET-MIB::csApsProtectionIndex

OID (numeric): 1.3.6.1.4.1.9.9.126.1.2.1.1.2

Node type: OBJECT-TYPE

Type: InterfaceIndex

Access: read-write

Description: The protection line indicates that it will become the active line when an APS switch occurs (APS switch could occur because of a failure on the working line). For G.783 AnnexB, This index refers to Working Section 2.

What is csApsProtectionIndex?

Identifies the protection line that becomes active on an APS (Automatic Protection Switching) switchover, which occurs when the working line fails.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.126.1.2.1.1.2
snmpwalk -v2c -c public <target> CISCO-SONET-MIB::csApsProtectionIndex

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.126.1.2.1.1.2.1
snmpget -v2c -c public <target> CISCO-SONET-MIB::csApsProtectionIndex.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.9.9.126.1.2.1.1.2.1 s <value>

Start monitoring Cisco SONET/SDH transport routers with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCO-SONET-MIB::csApsProtectionIndex OID value, configure state conditions and alerts, and monitor any Cisco SONET/SDH transport routers from a single console.

OID Breakdown

Upper-level ancestors (8 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
1.3.6.1.4.1.9ciscoCAT2600-MIB
1.3.6.1.4.1.9.9ciscoMgmtCISCO-SMI
Numeric OIDNameModule
1.3.6.1.4.1.9.9.126ciscoSonetMIBCISCO-SONET-MIB
1.3.6.1.4.1.9.9.126.1ciscoSonetMIBObjectsCISCO-SONET-MIB
1.3.6.1.4.1.9.9.126.1.2csApsConfigCISCO-SONET-MIB
1.3.6.1.4.1.9.9.126.1.2.1csApsConfigTableCISCO-SONET-MIB
1.3.6.1.4.1.9.9.126.1.2.1.1csApsConfigEntryCISCO-SONET-MIB
1.3.6.1.4.1.9.9.126.1.2.1.1.2csApsProtectionIndexCISCO-SONET-MIB