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diff --git a/isisd/topology/spgrid.h b/isisd/topology/spgrid.h
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+/*
+ * IS-IS Rout(e)ing protocol - topology/spgrid.h
+                               Routines for manipulation of SSN and SRM flags
+ * Copyright (C) 2001 Sampo Saaristo, Ofer Wald
+ *
+ * This program is free software; you can redistribute it and/or modify it 
+ * under the terms of the GNU General Public Licenseas published by the Free 
+ * Software Foundation; either version 2 of the License, or (at your option) 
+ * any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc., 
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+/*
+ * Based on:
+ * SPLIB Copyright C 1994 by Cherkassky, Goldberg, and Radzik
+ *
+ */
+#ifndef _ZEBRA_ISIS_TOPOLOGY_SPGRID_H
+#define _ZEBRA_ISIS_TOPOLOGY_SPGRID_H
+
+struct arc {
+  long from_node;
+  long to_node;
+  long distance;
+};
+
+int           gen_spgrid_topology (struct vty *vty, struct list *topology);
+int           spgrid_check_params (struct vty *vty, int argc, char **argv);
+
+
+#endif /* _ZEBRA_ISIS_TOPOLOGY_SPGRID_H */
+
+
+
+
+
+