All MIBs › EtherLike-MIB › dot3HCControlInUnknownOpcodes
dot3HCControlInUnknownOpcodes
Module: EtherLike-MIB
OID (symbolic): EtherLike-MIB::dot3HCControlInUnknownOpcodes
OID (numeric): 1.3.6.1.2.1.10.7.9.1.3
Node type: OBJECT-TYPE
Type: Counter64
Access: read-only
Description: A count of MAC Control frames received on this interface that contain an opcode that is not supported by this device.
This counter is a 64 bit version of dot3ControlInUnknownOpcodes. It should be used on interfaces operating at 10 Gb/s or faster.
Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.
What is dot3HCControlInUnknownOpcodes?
This 64-bit counter records MAC Control frames received on this interface that carried an opcode the device doesn't support, and is the high-capacity version of dot3ControlInUnknownOpcodes intended for 10 Gb/s and faster links. Admins watch it on high-speed interfaces to detect misbehaving or non-compliant peers sending malformed or unsupported MAC Control frames, since the 32-bit equivalent could wrap too quickly at those speeds to be reliable. For example, a 10 Gb/s uplink showing a growing count here while everything else looks normal suggests the far-end device is sending MAC Control opcodes this switch doesn't recognize, worth an interop check.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.10.7.9.1.3 snmpwalk -v2c -c public <target> EtherLike-MIB::dot3HCControlInUnknownOpcodes
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.10.7.9.1.3.1 snmpget -v2c -c public <target> EtherLike-MIB::dot3HCControlInUnknownOpcodes.1
Start monitoring Vendor-neutral Ethernet interface, any manufacturer (IEEE 802.3 EtherLike statistics) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the EtherLike-MIB::dot3HCControlInUnknownOpcodes OID value, configure state conditions and alerts, and monitor any Vendor-neutral Ethernet interface, any manufacturer (IEEE 802.3 EtherLike statistics) from a single console.
OID Breakdown
Upper-level ancestors (7 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.2 | mgmt | AXON-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| 1.3.6.1.2.1.10 | transmission | CHECKPOINT-MIB-2 |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.10.7 | dot3 | EtherLike-MIB |
| 1.3.6.1.2.1.10.7.9 | dot3ControlTable | EtherLike-MIB |
| 1.3.6.1.2.1.10.7.9.1 | dot3ControlEntry | EtherLike-MIB |
| 1.3.6.1.2.1.10.7.9.1.3 | dot3HCControlInUnknownOpcodes | EtherLike-MIB |