All MIBs › POWER-ETHERNET-MIB › pethPsePortInvalidSignatureCounter
pethPsePortInvalidSignatureCounter
Module: POWER-ETHERNET-MIB
OID (symbolic): POWER-ETHERNET-MIB::pethPsePortInvalidSignatureCounter
OID (numeric): 1.3.6.1.2.1.105.1.1.1.11
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: Invalid signature counter.
What is pethPsePortInvalidSignatureCounter?
This counts how many times the Power Sourcing Equipment (PSE) state machine for this Ethernet port entered the SIGNATURE_INVALID state, meaning the connected device failed the PoE detection signature check. Administrators watch this counter to identify ports where a connected device isn't a valid PoE powered device, which could indicate a wiring problem or an incompatible non-PoE device plugged into a PoE-capable port. A rising count on a specific port would lead an admin to check what's actually plugged into that port, since it isn't being recognized as a legitimate powered device.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.105.1.1.1.11 snmpwalk -v2c -c public <target> POWER-ETHERNET-MIB::pethPsePortInvalidSignatureCounter
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.105.1.1.1.11.1 snmpget -v2c -c public <target> POWER-ETHERNET-MIB::pethPsePortInvalidSignatureCounter.1
Start monitoring vendor-neutral, standards-based MIB (PoE PSE, RFC 3621) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the POWER-ETHERNET-MIB::pethPsePortInvalidSignatureCounter OID value, configure state conditions and alerts, and monitor any vendor-neutral, standards-based MIB (PoE PSE, RFC 3621) from a single console.
OID Breakdown
Upper-level ancestors (6 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 |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.105 | powerEthernetMIB | POWER-ETHERNET-MIB |
| 1.3.6.1.2.1.105.1 | pethObjects | POWER-ETHERNET-MIB |
| 1.3.6.1.2.1.105.1.1 | pethPsePortTable | POWER-ETHERNET-MIB |
| 1.3.6.1.2.1.105.1.1.1 | pethPsePortEntry | POWER-ETHERNET-MIB |
| 1.3.6.1.2.1.105.1.1.1.11 | pethPsePortInvalidSignatureCounter | POWER-ETHERNET-MIB |