revocation status
Click on the red underlined text to get to the source
... element of such
confirmation is reference to certificate revocation status (see
[RFC3280] for additional detail).
...
...
The traditional means of determining certificate revocation status is
through the use of Certificate Revocation Lists (CRLs ...
... IKEv2 signaling of a certificate's revocation status.
This document defines an extension to IKEv2 ...
... in-band signaling of certificate revocation status. A new
content encoding is defined for use in the CERTREQ ...
... OCSP and, if there is
no response, attempt to determine certificate revocation status by
some other means.
...