With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpkiIssuerCertSerialNum
cpki Issuer Cert Serial Num
1.3.6.1.4.1.9.9.505.1.1.2.1.12
The serial number of the issuer certificate. If there is no certificate (as indicated by a zero length string value of the object cpkiIssuerCertFileName), the value will be a zero length string.
Back to CISCO-PKI-PARTICIPATION-MIB MIB page.
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