Sometimes the OV agent status from the OM Management Server fails with the agent status looking like below,

Network communication problems occurred. (OpC40-427)

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CTRL - CommunicationException:
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(ctrl-21) Communication error when executing 'Status' method.
(sec.core-113) SSL certificate verification error (The presented peer certificate is not trusted. The certificate verification chain could not be built.). (OpC40-2130)
Failed.
It could be a certificate issue, either at the agent or at the OM Management server. Check and make sure they are fine.

Try manual cert exchange. verify if "bbcutil -ping http://hostname" command works both ways (Agent to OM and OM to agent)