After preparing the external PingDirectory servers to communicate with the PingDirectoryProxy server, add the two servers in the central location to the proxy server instance.
Because you ran the prepare-external-server tool, the two servers have the cn=Proxy User entry configured.
Run the dsconfig tool.
root@proxy-east-01:./dsconfig >>>> Specify LDAP connection parameters Directory Proxy Server host name or IP address [localhost]: How do you want to connect to the Directory Proxy Server at localhost? 1) LDAP 2) LDAP with SSL 3) LDAP with StartTLS Enter choice : 1 Directory Proxy Server at localhost port number : Administrator user bind DN [cn=Directory Manager]: Password for user 'cn=Directory Manager':