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diff --git a/src/lib/dhcpsrv/cfg_host_operations.h b/src/lib/dhcpsrv/cfg_host_operations.h
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+// Copyright (C) 2016-2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef CFG_HOST_OPERATIONS_H
+#define CFG_HOST_OPERATIONS_H
+
+#include <cc/cfg_to_element.h>
+#include <dhcpsrv/host.h>
+#include <boost/shared_ptr.hpp>
+#include <list>
+#include <string>
+
+namespace isc {
+namespace dhcp {
+
+/// @brief Forward declaration of the @ref CfgHostOperations.
+class CfgHostOperations;
+
+/// @name Pointers to the @ref CfgHostOperations objects.
+//@{
+/// @brief Pointer to the Non-const object.
+typedef boost::shared_ptr<CfgHostOperations> CfgHostOperationsPtr;
+
+/// @brief Pointer to the const object.
+typedef boost::shared_ptr<const CfgHostOperations>
+ConstCfgHostOperationsPtr;
+
+//@}
+
+/// @brief Represents global configuration for host reservations.
+///
+/// This class represents server configuration pertaining to host
+/// reservations.
+///
+/// Currently it only holds the ordered list of host identifiers
+/// to be used to search for reservations for a particular host.
+/// An administrator selects which identifiers the server should
+/// use and in which order to search for host reservations to
+/// optimize performance of the server.
+class CfgHostOperations : public isc::data::CfgToElement {
+public:
+
+    /// @brief Type of the container holding ordered list of identifiers.
+    typedef std::list<Host::IdentifierType> IdentifierTypes;
+
+    /// @brief Constructor.
+    ///
+    /// The default configuration:
+    /// - no identifiers selected for host reservations searches.
+    CfgHostOperations();
+
+    /// @name Factory functions for creating default configurations.
+    //@{
+    /// @brief Factory function for DHCPv4.
+    static CfgHostOperationsPtr createConfig4();
+
+    /// @brief Factory function for DHCPv6.
+    static CfgHostOperationsPtr createConfig6();
+    //@}
+
+    /// @brief Adds new identifier type to a collection of identifiers
+    /// to be used by the server to search for host reservations.
+    ///
+    /// @param identifier_name Name of the identifier to be added. It
+    /// must be one of the names supported by the @ref Host::getIdentifierType
+    /// function.
+    void addIdentifierType(const std::string& identifier_name);
+
+    /// @brief Returns const reference to ordered collection of identifiers
+    /// to be used by the server to search for host reservations.
+    const IdentifierTypes& getIdentifierTypes() const {
+        return (identifier_types_);
+    }
+
+    /// @brief Removes existing identifier types.
+    void clearIdentifierTypes();
+
+    /// @brief Unparse a configuration object
+    ///
+    /// @return a pointer to unparsed configuration
+    virtual isc::data::ElementPtr toElement() const;
+
+private:
+
+    /// @brief Holds ordered collection of identifiers to be used by the
+    /// server to search for host reservations for a client.
+    IdentifierTypes identifier_types_;
+
+};
+
+}
+}
+
+#endif // CFG_HOST_OPERATIONS_H