diff --git a/ospfd/ospf_ase.h b/ospfd/ospf_ase.h
new file mode 100644
index 0000000..f403e26
--- /dev/null
+++ b/ospfd/ospf_ase.h
@@ -0,0 +1,42 @@
+/*
+ * OSPF AS External route calculation.
+ * Copyright (C) 1999, 2000 Alex Zinin, Toshiaki Takada
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef _ZEBRA_OSPF_ASE_H
+#define _ZEBRA_OSPF_ASE_H
+
+
+struct ospf_route *ospf_find_asbr_route (struct route_table *,
+					 struct prefix_ipv4 *);
+struct ospf_route *ospf_find_asbr_route_through_area(struct route_table *, 
+						     struct prefix_ipv4 *, 
+						     struct ospf_area *);
+
+int ospf_ase_calculate_route (struct ospf_lsa *, void *, int);
+void ospf_ase_calculate_schedule ();
+void ospf_ase_calculate_timer_add ();
+
+void ospf_ase_external_lsas_finish (struct route_table *);
+void ospf_ase_incremental_update (struct ospf_lsa *, struct ospf *);
+void ospf_ase_register_external_lsa (struct ospf_lsa *, struct ospf *);
+void ospf_ase_unregister_external_lsa (struct ospf_lsa *, struct ospf *);
+
+#endif /* _ZEBRA_OSPF_ASE_H */