You can use the LDAP directory services instead of the interfaces file in both the client and the server.
SAP ASE supports LDAP services for obtaining server information, and so does Component Integration Services. When a connection to a remote server is attempted, Component Integration Services instructs Open Client software to reference either the interfaces file or an LDAP server unless the net name argument to sp_addserver contains a colon ( : ).
Component Integration Services uses LDAP services only when the configuration file (libtcl.cfg) specifies it. libtcl.cfg can be found at $SYBASE/$SYBASE_OCS/config/libtcl.cfg or $SYBASE/$SYBASE_OCS/config/libtcl64.cfg for 64-bit applications.