DTRConcentratorMIB :: dtrOperNumberOfCrfs

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

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dtrOperNumberOfCrfs

Module: DTRConcentratorMIB

OID (symbolic): DTRConcentratorMIB::dtrOperNumberOfCrfs

OID (numeric): 1.3.6.1.4.1.2.6.66.1.3.1.1.1.1.2

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: Number of Concentrator Relay Functions within the DTR Concentrator. Min value is 1. Writing this object sets the number of CRFs within the DTR Concentrator.

What is dtrOperNumberOfCrfs?

The number of Concentrator Relay Functions (CRFs, essentially internal token-ring switching engines) configured within this concentrator; writing a new value reconfigures how many CRFs the chassis presents.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2.6.66.1.3.1.1.1.1.2
snmpwalk -v2c -c public <target> DTRConcentratorMIB::dtrOperNumberOfCrfs

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.2.6.66.1.3.1.1.1.1.2.1
snmpget -v2c -c public <target> DTRConcentratorMIB::dtrOperNumberOfCrfs.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.2.6.66.1.3.1.1.1.1.2.1 i <value>

Start monitoring IBM Token Ring DTR concentrators with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DTRConcentratorMIB::dtrOperNumberOfCrfs OID value, configure state conditions and alerts, and monitor any IBM Token Ring DTR concentrators 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
1.3.6.1.4.1.2ibmATM-ADAPTER-MIB
1.3.6.1.4.1.2.6ibmProdATM-ADAPTER-MIB
Numeric OIDNameModule
1.3.6.1.4.1.2.6.66ibm8272DTRConcentratorMIB
1.3.6.1.4.1.2.6.66.1ibm8272TsDTRConcentratorMIB
1.3.6.1.4.1.2.6.66.1.3ibm8272TsExpMIBsDTRConcentratorMIB
1.3.6.1.4.1.2.6.66.1.3.1dtrMIBsDTRConcentratorMIB
1.3.6.1.4.1.2.6.66.1.3.1.1dtrConcMIBDTRConcentratorMIB
1.3.6.1.4.1.2.6.66.1.3.1.1.1dtrConcMIBObjectsDTRConcentratorMIB
1.3.6.1.4.1.2.6.66.1.3.1.1.1.1dtrConcMIBBaseDTRConcentratorMIB
1.3.6.1.4.1.2.6.66.1.3.1.1.1.1.2dtrOperNumberOfCrfsDTRConcentratorMIB