NBS-COHERENT-MIB :: nbsCohpmThresholdsAveCD

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

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nbsCohpmThresholdsAveCD

Module: NBS-COHERENT-MIB

OID (symbolic): NBS-COHERENT-MIB::nbsCohpmThresholdsAveCD

OID (numeric): 1.3.6.1.4.1.629.242.21.1.1.20

Node type: OBJECT-TYPE

Type: Integer32

Access: read-write

Description: Persistent. The average chromatic dispersion (CD) threshold. Unit measurement: 1 ps/nm

The first time nbsCohpmCurrentAveCD meets/exceeds this threshold during a given current interval triggers nbsCohpmTrapsAveCD.

Not supported value: 0x80000000

What is nbsCohpmThresholdsAveCD?

nbsCohpmThresholdsAveCD is read-write and holds a persistent, administrator-set alarm threshold for the average chromatic dispersion (CD) on this coherent optical interface, i.e. how much the fiber link has spread out the optical signal in time due to wavelength-dependent propagation delay; not-supported is encoded as 0x80000000. Unit measurement: 1 ps/nm. The first time nbsCohpmCurrentAveCD meets/exceeds this threshold (or, for a Min object, drops below it) during a reporting interval, the device raises the nbsCohpmTrapsAveCD notification, so a sysadmin sets this value to the average chromatic dispersion level they consider unsafe for this specific link's optics and fiber path.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.629.242.21.1.1.20
snmpwalk -v2c -c public <target> NBS-COHERENT-MIB::nbsCohpmThresholdsAveCD

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.629.242.21.1.1.20.1
snmpget -v2c -c public <target> NBS-COHERENT-MIB::nbsCohpmThresholdsAveCD.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.629.242.21.1.1.20.1 i <value>

Start monitoring MRV coherent optical transport platform (CFP-based DWDM interface) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the NBS-COHERENT-MIB::nbsCohpmThresholdsAveCD OID value, configure state conditions and alerts, and monitor any MRV coherent optical transport platform (CFP-based DWDM interface) from a single console.

OID Breakdown

Upper-level ancestors (7 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
1.3.6.1.4.1.629nbaseCORE-MIB
Numeric OIDNameModule
1.3.6.1.4.1.629.242nbsCoherentMibNBS-COHERENT-MIB
1.3.6.1.4.1.629.242.21nbsCohpmThresholdsGrpNBS-COHERENT-MIB
1.3.6.1.4.1.629.242.21.1nbsCohpmThresholdsTableNBS-COHERENT-MIB
1.3.6.1.4.1.629.242.21.1.1nbsCohpmThresholdsEntryNBS-COHERENT-MIB
1.3.6.1.4.1.629.242.21.1.1.20nbsCohpmThresholdsAveCDNBS-COHERENT-MIB