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z The network connection is not proper. For example, the network cable may be damaged or loose.
z No trusted CA is specified.
z The URL of the registration server for certificate request is not correct or not configured.
z No authority is specified for certificate request.
z The system clock of the device is not synchronized with that of the CA.
Solution
z Make sure that the network connection is physically proper.
z Check that the required commands are configured properly.
z Use the ping command to check that the RA server is reachable.
z Specify the authority for certificate request.
z Synchronize the system clock of the device with that of the CA.
Failed to Request a Local Certificate
Symptom
Failed to request a local certificate.
Analysis
Possible reasons include these:
z The network connection is not proper. For example, the network cable may be damaged or loose.
z No CA certificate has been retrieved.
z The current key pair has been bound to a certificate.
z No trusted CA is specified.
z The URL of the registration server for certificate request is not correct or not configured.
z No authority is specified for certificate request.
z Some required parameters of the entity DN are not configured.
Solution
z Make sure that the network connection is physically proper.
z Retrieve a CA certificate.
z Regenerate a key pair.
z Specify a trusted CA.
z Use the ping command to check that the RA server is reachable.
z Specify the authority for certificate request.
z Configure the required entity DN parameters.
Failed to Retrieve CRLs
Symptom
Failed to retrieve CRLs.
Analysis
Possible reasons include these:
z The network connection is not proper. For example, the network cable may be damaged or loose.
z No CA certificate has been retrieved before you try to retrieve CRLs.
z The IP address of LDAP server is not configured.
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