SNMP-TLS-TM-MIB :: snmpTlstmSessionUnknownServerCertificate

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › SNMP-TLS-TM-MIB › snmpTlstmSessionUnknownServerCertificate

snmpTlstmSessionUnknownServerCertificate

Module: SNMP-TLS-TM-MIB

OID (symbolic): SNMP-TLS-TM-MIB::snmpTlstmSessionUnknownServerCertificate

OID (numeric): 1.3.6.1.2.1.198.2.1.8

Node type: OBJECT-TYPE

Type: Counter32

Access: read-only

Description: The number of times an outgoing session was not established on a (D)TLS client because the server certificate presented by an SNMP over (D)TLS server was invalid because no configured fingerprint or Certification Authority (CA) was acceptable to validate it. This may result because there was no entry in the snmpTlstmAddrTable or because no path could be found to a known CA.

What is snmpTlstmSessionUnknownServerCertificate?

Counts how many outgoing (D)TLS sessions this engine, as a client, failed to establish because the server's certificate could not be validated against any configured fingerprint or trusted CA, often meaning snmpTlstmAddrTable has no matching entry.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.198.2.1.8
snmpwalk -v2c -c public <target> SNMP-TLS-TM-MIB::snmpTlstmSessionUnknownServerCertificate

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.198.2.1.8.1
snmpget -v2c -c public <target> SNMP-TLS-TM-MIB::snmpTlstmSessionUnknownServerCertificate.1

Start monitoring vendor-neutral, standards-based MIB, any SNMP agent/manager using TLS or DTLS transport (session/certificate-mapping status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the SNMP-TLS-TM-MIB::snmpTlstmSessionUnknownServerCertificate OID value, configure state conditions and alerts, and monitor any vendor-neutral, standards-based MIB, any SNMP agent/manager using TLS or DTLS transport (session/certificate-mapping status) from a single console.

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
1.3.6.1.2.1.198snmpTlstmMIBSNMP-TLS-TM-MIB
1.3.6.1.2.1.198.2snmpTlstmObjectsSNMP-TLS-TM-MIB
1.3.6.1.2.1.198.2.1snmpTlstmSessionSNMP-TLS-TM-MIB
1.3.6.1.2.1.198.2.1.8snmpTlstmSessionUnknownServerCertificateSNMP-TLS-TM-MIB