Clarification in configuring OCSP in tomcat

We can configure OCSP in tomcat using,

    <Connector port="8443"
   protocol="org.apache.coyote.http11.Http11AprProtocol"
   secure="true" scheme="https"
   SSLEnabled="true" SSLCertificateFile="/path/to/ocsp-cert.crt"
   SSLCertificateKeyFile="/path/to/ocsp-cert.key"
   SSLCACertificateFile="/path/to/ca.pem"
   SSLVerifyClient="require"
   SSLVerifyDepth="10"
   clientAuth="true"/>

As mentioned in tomcat documentation, https://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html#Using_OCSP_Certificates

But from that documentation I didn't get where OCSP is performed whether on server side(For revocating client certificate) or client side(for revocating server certificate) ?