All MIBs › ACD-PORT-MIB › acdPortRxStatsBadOpcode
acdPortRxStatsBadOpcode
Module: ACD-PORT-MIB
OID (symbolic): ACD-PORT-MIB::acdPortRxStatsBadOpcode
OID (numeric): 1.3.6.1.4.1.22420.2.9.1.3.2.1.22
Node type: OBJECT-TYPE
Type: Counter64
Access: read-only
Description: This is a count of the good control packets received by this port (good CRC, no PHY or FIFO errors, normally sized) with an unknown opcode. Unknown control packets are identified by a type field of 88-08 and an opcode field not equal to 00-01.
What is acdPortRxStatsBadOpcode?
This counts well-formed control frames (Ethernet type 0x8808) with an unknown operation code other than pause (0x0001). Network engineers investigate bad opcodes to identify non-standard devices or future flow-control extensions that your port doesn't yet recognize. A single bad-opcode packet per week suggests a device attempting to use a proprietary or extended control mechanism.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.22420.2.9.1.3.2.1.22 snmpwalk -v2c -c public <target> ACD-PORT-MIB::acdPortRxStatsBadOpcode
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.22420.2.9.1.3.2.1.22.1 snmpget -v2c -c public <target> ACD-PORT-MIB::acdPortRxStatsBadOpcode.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> acdPortRxStatsBadOpcode.1
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OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.22420 | accedianMIB | ACCEDIAN-SMI |
| 1.3.6.1.4.1.22420.2 | acdMibs | ACCEDIAN-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.22420.2.9 | acdPort | ACD-PORT-MIB |
| 1.3.6.1.4.1.22420.2.9.1 | acdPortMIBObjects | ACD-PORT-MIB |
| 1.3.6.1.4.1.22420.2.9.1.3 | acdPortStats | ACD-PORT-MIB |
| 1.3.6.1.4.1.22420.2.9.1.3.2 | acdPortRxStatsTable | ACD-PORT-MIB |
| 1.3.6.1.4.1.22420.2.9.1.3.2.1 | acdPortRxStatsEntry | ACD-PORT-MIB |
| 1.3.6.1.4.1.22420.2.9.1.3.2.1.22 | acdPortRxStatsBadOpcode | ACD-PORT-MIB |