If the <b>-index</b> option is specified then this command switches to responder mode, otherwise it is in client mode. The request(s) the responder processes can be either specified on the command line (using <b>-issuer</b> and <b>-serial</b> options), supplied in a file (using the <b>-reqin</b> option) or via external OCSP clients (if <b>-port</b> or <b>-url</b> is specified).</p>

<p>If the <b>-index</b> option is present then the <b>-CA</b> and <b>-rsigner</b> options must also be present.</p>

</dd>
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