COPS-CLIENT-MIB :: copsClientErrUnknownCnum

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › COPS-CLIENT-MIB › copsClientErrUnknownCnum

copsClientErrUnknownCnum

Module: COPS-CLIENT-MIB

OID (symbolic): COPS-CLIENT-MIB::copsClientErrUnknownCnum

OID (numeric): 1.3.6.1.2.1.89.1.2.1.1.23

Node type: OBJECT-TYPE

Type: Counter32

Access: read-only

Description: A count of the total number of COPS messages that this client has received from COPS servers marked for this Client-Type that contained a COPS protocol object C-Num that was unrecognised by this client. This value is cumulative since agent restart and is not zeroed on new connections.

What is copsClientErrUnknownCnum?

This read-only Counter32, cumulative since agent restart, counts received messages containing a COPS object C-Num the client doesn't recognize. Like the unknown-opcode counter, it signals a protocol-compatibility gap where the server is using object types this client's COPS stack doesn't understand. For example, an admin cross-references a rise in copsClientErrUnknownCnum with a recent PDP firmware change that may have introduced new COPS object types.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.89.1.2.1.1.23
snmpwalk -v2c -c public <target> COPS-CLIENT-MIB::copsClientErrUnknownCnum

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.89.1.2.1.1.23.1
snmpget -v2c -c public <target> COPS-CLIENT-MIB::copsClientErrUnknownCnum.1

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OID Breakdown

Upper-level ancestors (6 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAPERTUS-NPG-MIB
1.3.6.1.2.1mib_2AXON-MIB
Numeric OIDNameModule
1.3.6.1.2.1.89copsClientMIBCOPS-CLIENT-MIB
1.3.6.1.2.1.89.1copsClientMIBObjectsCOPS-CLIENT-MIB
1.3.6.1.2.1.89.1.2copsClientStatusGroupCOPS-CLIENT-MIB
1.3.6.1.2.1.89.1.2.1copsClientServerCurrentTableCOPS-CLIENT-MIB
1.3.6.1.2.1.89.1.2.1.1copsClientServerCurrentEntryCOPS-CLIENT-MIB
1.3.6.1.2.1.89.1.2.1.1.23copsClientErrUnknownCnumCOPS-CLIENT-MIB