An administrator is experiencing a communication issue between the master and client and believes the...

The correct log is the vnetd proxy log. NetBackup secure host communication uses host ID-based certificates and certificate revocation lists (CRLs). When communication fails between the primary/master server and a client because a certificate is revoked, unavailable, missing, or affected by CRL validation, the relevant troubleshooting path is the vnetd proxy process log files. Cohesity’s NetBackup Troubleshooting Guide states that for host-certificate troubleshooting, administrators should examine job details for certificate, revocation, and CRL messages, and “may need to examine the vnetd proxy process log files” for related messages and status codes. The same guide notes that NetBackup hosts must have a valid host ID-based security certificate and a valid CRL to communicate; otherwise, communication fails. For a revoked primary server certificate, Cohesity specifically identifies that the vnetd proxy process log files on hosts show that the primary server certificate is revoked. Therefore, nbemm is for Enterprise Media Manager functions, bprd is request processing, and nbrb is resource brokering; none is the primary diagnostic log for certificate revocation analysis. Reference topics: Troubleshooting security certificate revocation, Viewing vnetd proxy log files, and Test the vnetd proxy connections.